(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Twister = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
module.exports = {
  encode: require( './lib/encode' ),
  decode: require( './lib/decode' )
}

},{"./lib/decode":2,"./lib/encode":4}],2:[function(require,module,exports){
(function (Buffer){
var Dict = require("./dict")

/**
 * Decodes bencoded data.
 *
 * @param  {Buffer} data
 * @param  {String} encoding
 * @return {Object|Array|Buffer|String|Number}
 */
function decode( data, encoding ) {

  decode.position = 0
  decode.encoding = encoding || null

  decode.data = !( Buffer.isBuffer(data) )
    ? new Buffer( data )
    : data

  return decode.next()

}

decode.position = 0
decode.data     = null
decode.encoding = null

decode.next = function() {

  switch( decode.data[decode.position] ) {
    case 0x64: return decode.dictionary(); break
    case 0x6C: return decode.list(); break
    case 0x69: return decode.integer(); break
    default:   return decode.bytes(); break
  }

}

decode.find = function( chr ) {

  var i = decode.position
  var c = decode.data.length
  var d = decode.data

  while( i < c ) {
    if( d[i] === chr )
      return i
    i++
  }

  throw new Error(
    'Invalid data: Missing delimiter "' +
    String.fromCharCode( chr ) + '" [0x' +
    chr.toString( 16 ) + ']'
  )

}

decode.dictionary = function() {

  decode.position++

  var dict = new Dict()

  while( decode.data[decode.position] !== 0x65 ) {
    dict.binarySet(decode.bytes(), decode.next())
  }

  decode.position++

  return dict

}

decode.list = function() {

  decode.position++

  var lst = []

  while( decode.data[decode.position] !== 0x65 ) {
    lst.push( decode.next() )
  }

  decode.position++

  return lst

}

decode.integer = function() {

  var end    = decode.find( 0x65 )
  var number = decode.data.toString( 'ascii', decode.position + 1, end )

  decode.position += end + 1 - decode.position

  return parseInt( number, 10 )

}

decode.bytes = function() {

  var sep    = decode.find( 0x3A )
  var length = parseInt( decode.data.toString( 'ascii', decode.position, sep ), 10 )
  var end    = ++sep + length

  decode.position = end

  return decode.encoding
    ? decode.data.toString( decode.encoding, sep, end )
    : decode.data.slice( sep, end )

}

// Exports
module.exports = decode

}).call(this,require("buffer").Buffer)
},{"./dict":3,"buffer":177}],3:[function(require,module,exports){
var Dict = module.exports = function Dict() {
  Object.defineProperty(this, "_keys", {
    enumerable: false,
    value: [],
  })
}

Dict.prototype.binaryKeys = function binaryKeys() {
  return this._keys.slice()
}

Dict.prototype.binarySet = function binarySet(key, value) {
  this._keys.push(key)

  this[key] = value
}

},{}],4:[function(require,module,exports){
(function (Buffer){
/**
 * Encodes data in bencode.
 *
 * @param  {Buffer|Array|String|Object|Number} data
 * @return {Buffer}
 */
function encode( data ) {
  var buffers = []
  encode._encode( buffers, data )
  return Buffer.concat( buffers )
}

encode._floatConversionDetected = false

encode._encode = function( buffers, data ) {

  if( Buffer.isBuffer(data) ) {
    buffers.push(new Buffer(data.length + ':'))
    buffers.push(data)
    return;
  }

  switch( typeof data ) {
    case 'string':
      encode.bytes( buffers, data )
      break
    case 'number':
      encode.number( buffers, data )
      break
    case 'object':
      data.constructor === Array
        ? encode.list( buffers, data )
        : encode.dict( buffers, data )
      break
  }

}

var buff_e = new Buffer('e')
  , buff_d = new Buffer('d')
  , buff_l = new Buffer('l')

encode.bytes = function( buffers, data ) {

  buffers.push( new Buffer(Buffer.byteLength( data ) + ':' + data) )
}

encode.number = function( buffers, data ) {
  var maxLo = 0x80000000
  var hi = ( data / maxLo ) << 0
  var lo = ( data % maxLo  ) << 0
  var val = hi * maxLo + lo

  buffers.push( new Buffer( 'i' + val + 'e' ))

  if( val !== data && !encode._floatConversionDetected ) {
    encode._floatConversionDetected = true
    console.warn(
      'WARNING: Possible data corruption detected with value "'+data+'":',
      'Bencoding only defines support for integers, value was converted to "'+val+'"'
    )
    console.trace()
  }

}

encode.dict = function( buffers, data ) {

  buffers.push( buff_d )

  var j = 0
  var k
  // fix for issue #13 - sorted dicts
  var keys = Object.keys( data ).sort()
  var kl = keys.length

  for( ; j < kl ; j++) {
    k=keys[j]
    encode.bytes( buffers, k )
    encode._encode( buffers, data[k] )
  }

  buffers.push( buff_e )
}

encode.list = function( buffers, data ) {

  var i = 0, j = 1
  var c = data.length
  buffers.push( buff_l )

  for( ; i < c; i++ ) {
    encode._encode( buffers, data[i] )
  }

  buffers.push( buff_e )

}

// Expose
module.exports = encode

}).call(this,require("buffer").Buffer)
},{"buffer":177}],5:[function(require,module,exports){
// (public) Constructor
function BigInteger(a, b, c) {
  if (!(this instanceof BigInteger))
    return new BigInteger(a, b, c)

  if (a != null) {
    if ("number" == typeof a) this.fromNumber(a, b, c)
    else if (b == null && "string" != typeof a) this.fromString(a, 256)
    else this.fromString(a, b)
  }
}

var proto = BigInteger.prototype

// duck-typed isBigInteger
proto.__bigi = require('../package.json').version
BigInteger.isBigInteger = function (obj, check_ver) {
  return obj && obj.__bigi && (!check_ver || obj.__bigi === proto.__bigi)
}

// Bits per digit
var dbits

// am: Compute w_j += (x*this_i), propagate carries,
// c is initial carry, returns final carry.
// c < 3*dvalue, x < 2*dvalue, this_i < dvalue
// We need to select the fastest one that works in this environment.

// am1: use a single mult and divide to get the high bits,
// max digit bits should be 26 because
// max internal value = 2*dvalue^2-2*dvalue (< 2^53)
function am1(i, x, w, j, c, n) {
  while (--n >= 0) {
    var v = x * this[i++] + w[j] + c
    c = Math.floor(v / 0x4000000)
    w[j++] = v & 0x3ffffff
  }
  return c
}
// am2 avoids a big mult-and-extract completely.
// Max digit bits should be <= 30 because we do bitwise ops
// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31)
function am2(i, x, w, j, c, n) {
  var xl = x & 0x7fff,
    xh = x >> 15
  while (--n >= 0) {
    var l = this[i] & 0x7fff
    var h = this[i++] >> 15
    var m = xh * l + h * xl
    l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff)
    c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30)
    w[j++] = l & 0x3fffffff
  }
  return c
}
// Alternately, set max digit bits to 28 since some
// browsers slow down when dealing with 32-bit numbers.
function am3(i, x, w, j, c, n) {
  var xl = x & 0x3fff,
    xh = x >> 14
  while (--n >= 0) {
    var l = this[i] & 0x3fff
    var h = this[i++] >> 14
    var m = xh * l + h * xl
    l = xl * l + ((m & 0x3fff) << 14) + w[j] + c
    c = (l >> 28) + (m >> 14) + xh * h
    w[j++] = l & 0xfffffff
  }
  return c
}

// wtf?
BigInteger.prototype.am = am1
dbits = 26

BigInteger.prototype.DB = dbits
BigInteger.prototype.DM = ((1 << dbits) - 1)
var DV = BigInteger.prototype.DV = (1 << dbits)

var BI_FP = 52
BigInteger.prototype.FV = Math.pow(2, BI_FP)
BigInteger.prototype.F1 = BI_FP - dbits
BigInteger.prototype.F2 = 2 * dbits - BI_FP

// Digit conversions
var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz"
var BI_RC = new Array()
var rr, vv
rr = "0".charCodeAt(0)
for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv
rr = "a".charCodeAt(0)
for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv
rr = "A".charCodeAt(0)
for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv

function int2char(n) {
  return BI_RM.charAt(n)
}

function intAt(s, i) {
  var c = BI_RC[s.charCodeAt(i)]
  return (c == null) ? -1 : c
}

// (protected) copy this to r
function bnpCopyTo(r) {
  for (var i = this.t - 1; i >= 0; --i) r[i] = this[i]
  r.t = this.t
  r.s = this.s
}

// (protected) set from integer value x, -DV <= x < DV
function bnpFromInt(x) {
  this.t = 1
  this.s = (x < 0) ? -1 : 0
  if (x > 0) this[0] = x
  else if (x < -1) this[0] = x + DV
  else this.t = 0
}

// return bigint initialized to value
function nbv(i) {
  var r = new BigInteger()
  r.fromInt(i)
  return r
}

// (protected) set from string and radix
function bnpFromString(s, b) {
  var self = this

  var k
  if (b == 16) k = 4
  else if (b == 8) k = 3
  else if (b == 256) k = 8; // byte array
  else if (b == 2) k = 1
  else if (b == 32) k = 5
  else if (b == 4) k = 2
  else {
    self.fromRadix(s, b)
    return
  }
  self.t = 0
  self.s = 0
  var i = s.length,
    mi = false,
    sh = 0
  while (--i >= 0) {
    var x = (k == 8) ? s[i] & 0xff : intAt(s, i)
    if (x < 0) {
      if (s.charAt(i) == "-") mi = true
      continue
    }
    mi = false
    if (sh == 0)
      self[self.t++] = x
    else if (sh + k > self.DB) {
      self[self.t - 1] |= (x & ((1 << (self.DB - sh)) - 1)) << sh
      self[self.t++] = (x >> (self.DB - sh))
    } else
      self[self.t - 1] |= x << sh
    sh += k
    if (sh >= self.DB) sh -= self.DB
  }
  if (k == 8 && (s[0] & 0x80) != 0) {
    self.s = -1
    if (sh > 0) self[self.t - 1] |= ((1 << (self.DB - sh)) - 1) << sh
  }
  self.clamp()
  if (mi) BigInteger.ZERO.subTo(self, self)
}

// (protected) clamp off excess high words
function bnpClamp() {
  var c = this.s & this.DM
  while (this.t > 0 && this[this.t - 1] == c)--this.t
}

// (public) return string representation in given radix
function bnToString(b) {
  var self = this
  if (self.s < 0) return "-" + self.negate()
    .toString(b)
  var k
  if (b == 16) k = 4
  else if (b == 8) k = 3
  else if (b == 2) k = 1
  else if (b == 32) k = 5
  else if (b == 4) k = 2
  else return self.toRadix(b)
  var km = (1 << k) - 1,
    d, m = false,
    r = "",
    i = self.t
  var p = self.DB - (i * self.DB) % k
  if (i-- > 0) {
    if (p < self.DB && (d = self[i] >> p) > 0) {
      m = true
      r = int2char(d)
    }
    while (i >= 0) {
      if (p < k) {
        d = (self[i] & ((1 << p) - 1)) << (k - p)
        d |= self[--i] >> (p += self.DB - k)
      } else {
        d = (self[i] >> (p -= k)) & km
        if (p <= 0) {
          p += self.DB
          --i
        }
      }
      if (d > 0) m = true
      if (m) r += int2char(d)
    }
  }
  return m ? r : "0"
}

// (public) -this
function bnNegate() {
  var r = new BigInteger()
  BigInteger.ZERO.subTo(this, r)
  return r
}

// (public) |this|
function bnAbs() {
  return (this.s < 0) ? this.negate() : this
}

// (public) return + if this > a, - if this < a, 0 if equal
function bnCompareTo(a) {
  var r = this.s - a.s
  if (r != 0) return r
  var i = this.t
  r = i - a.t
  if (r != 0) return (this.s < 0) ? -r : r
  while (--i >= 0)
    if ((r = this[i] - a[i]) != 0) return r
  return 0
}

// returns bit length of the integer x
function nbits(x) {
  var r = 1,
    t
  if ((t = x >>> 16) != 0) {
    x = t
    r += 16
  }
  if ((t = x >> 8) != 0) {
    x = t
    r += 8
  }
  if ((t = x >> 4) != 0) {
    x = t
    r += 4
  }
  if ((t = x >> 2) != 0) {
    x = t
    r += 2
  }
  if ((t = x >> 1) != 0) {
    x = t
    r += 1
  }
  return r
}

// (public) return the number of bits in "this"
function bnBitLength() {
  if (this.t <= 0) return 0
  return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM))
}

// (public) return the number of bytes in "this"
function bnByteLength() {
  return this.bitLength() >> 3
}

// (protected) r = this << n*DB
function bnpDLShiftTo(n, r) {
  var i
  for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i]
  for (i = n - 1; i >= 0; --i) r[i] = 0
  r.t = this.t + n
  r.s = this.s
}

// (protected) r = this >> n*DB
function bnpDRShiftTo(n, r) {
  for (var i = n; i < this.t; ++i) r[i - n] = this[i]
  r.t = Math.max(this.t - n, 0)
  r.s = this.s
}

// (protected) r = this << n
function bnpLShiftTo(n, r) {
  var self = this
  var bs = n % self.DB
  var cbs = self.DB - bs
  var bm = (1 << cbs) - 1
  var ds = Math.floor(n / self.DB),
    c = (self.s << bs) & self.DM,
    i
  for (i = self.t - 1; i >= 0; --i) {
    r[i + ds + 1] = (self[i] >> cbs) | c
    c = (self[i] & bm) << bs
  }
  for (i = ds - 1; i >= 0; --i) r[i] = 0
  r[ds] = c
  r.t = self.t + ds + 1
  r.s = self.s
  r.clamp()
}

// (protected) r = this >> n
function bnpRShiftTo(n, r) {
  var self = this
  r.s = self.s
  var ds = Math.floor(n / self.DB)
  if (ds >= self.t) {
    r.t = 0
    return
  }
  var bs = n % self.DB
  var cbs = self.DB - bs
  var bm = (1 << bs) - 1
  r[0] = self[ds] >> bs
  for (var i = ds + 1; i < self.t; ++i) {
    r[i - ds - 1] |= (self[i] & bm) << cbs
    r[i - ds] = self[i] >> bs
  }
  if (bs > 0) r[self.t - ds - 1] |= (self.s & bm) << cbs
  r.t = self.t - ds
  r.clamp()
}

// (protected) r = this - a
function bnpSubTo(a, r) {
  var self = this
  var i = 0,
    c = 0,
    m = Math.min(a.t, self.t)
  while (i < m) {
    c += self[i] - a[i]
    r[i++] = c & self.DM
    c >>= self.DB
  }
  if (a.t < self.t) {
    c -= a.s
    while (i < self.t) {
      c += self[i]
      r[i++] = c & self.DM
      c >>= self.DB
    }
    c += self.s
  } else {
    c += self.s
    while (i < a.t) {
      c -= a[i]
      r[i++] = c & self.DM
      c >>= self.DB
    }
    c -= a.s
  }
  r.s = (c < 0) ? -1 : 0
  if (c < -1) r[i++] = self.DV + c
  else if (c > 0) r[i++] = c
  r.t = i
  r.clamp()
}

// (protected) r = this * a, r != this,a (HAC 14.12)
// "this" should be the larger one if appropriate.
function bnpMultiplyTo(a, r) {
  var x = this.abs(),
    y = a.abs()
  var i = x.t
  r.t = i + y.t
  while (--i >= 0) r[i] = 0
  for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t)
  r.s = 0
  r.clamp()
  if (this.s != a.s) BigInteger.ZERO.subTo(r, r)
}

// (protected) r = this^2, r != this (HAC 14.16)
function bnpSquareTo(r) {
  var x = this.abs()
  var i = r.t = 2 * x.t
  while (--i >= 0) r[i] = 0
  for (i = 0; i < x.t - 1; ++i) {
    var c = x.am(i, x[i], r, 2 * i, 0, 1)
    if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) {
      r[i + x.t] -= x.DV
      r[i + x.t + 1] = 1
    }
  }
  if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1)
  r.s = 0
  r.clamp()
}

// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
// r != q, this != m.  q or r may be null.
function bnpDivRemTo(m, q, r) {
  var self = this
  var pm = m.abs()
  if (pm.t <= 0) return
  var pt = self.abs()
  if (pt.t < pm.t) {
    if (q != null) q.fromInt(0)
    if (r != null) self.copyTo(r)
    return
  }
  if (r == null) r = new BigInteger()
  var y = new BigInteger(),
    ts = self.s,
    ms = m.s
  var nsh = self.DB - nbits(pm[pm.t - 1]); // normalize modulus
  if (nsh > 0) {
    pm.lShiftTo(nsh, y)
    pt.lShiftTo(nsh, r)
  } else {
    pm.copyTo(y)
    pt.copyTo(r)
  }
  var ys = y.t
  var y0 = y[ys - 1]
  if (y0 == 0) return
  var yt = y0 * (1 << self.F1) + ((ys > 1) ? y[ys - 2] >> self.F2 : 0)
  var d1 = self.FV / yt,
    d2 = (1 << self.F1) / yt,
    e = 1 << self.F2
  var i = r.t,
    j = i - ys,
    t = (q == null) ? new BigInteger() : q
  y.dlShiftTo(j, t)
  if (r.compareTo(t) >= 0) {
    r[r.t++] = 1
    r.subTo(t, r)
  }
  BigInteger.ONE.dlShiftTo(ys, t)
  t.subTo(y, y); // "negative" y so we can replace sub with am later
  while (y.t < ys) y[y.t++] = 0
  while (--j >= 0) {
    // Estimate quotient digit
    var qd = (r[--i] == y0) ? self.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2)
    if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out
      y.dlShiftTo(j, t)
      r.subTo(t, r)
      while (r[i] < --qd) r.subTo(t, r)
    }
  }
  if (q != null) {
    r.drShiftTo(ys, q)
    if (ts != ms) BigInteger.ZERO.subTo(q, q)
  }
  r.t = ys
  r.clamp()
  if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder
  if (ts < 0) BigInteger.ZERO.subTo(r, r)
}

// (public) this mod a
function bnMod(a) {
  var r = new BigInteger()
  this.abs()
    .divRemTo(a, null, r)
  if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r)
  return r
}

// Modular reduction using "classic" algorithm
function Classic(m) {
  this.m = m
}

function cConvert(x) {
  if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m)
  else return x
}

function cRevert(x) {
  return x
}

function cReduce(x) {
  x.divRemTo(this.m, null, x)
}

function cMulTo(x, y, r) {
  x.multiplyTo(y, r)
  this.reduce(r)
}

function cSqrTo(x, r) {
  x.squareTo(r)
  this.reduce(r)
}

Classic.prototype.convert = cConvert
Classic.prototype.revert = cRevert
Classic.prototype.reduce = cReduce
Classic.prototype.mulTo = cMulTo
Classic.prototype.sqrTo = cSqrTo

// (protected) return "-1/this % 2^DB"; useful for Mont. reduction
// justification:
//         xy == 1 (mod m)
//         xy =  1+km
//   xy(2-xy) = (1+km)(1-km)
// x[y(2-xy)] = 1-k^2m^2
// x[y(2-xy)] == 1 (mod m^2)
// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
// should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
// JS multiply "overflows" differently from C/C++, so care is needed here.
function bnpInvDigit() {
  if (this.t < 1) return 0
  var x = this[0]
  if ((x & 1) == 0) return 0
  var y = x & 3; // y == 1/x mod 2^2
  y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4
  y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8
  y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16
  // last step - calculate inverse mod DV directly
  // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
  y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits
  // we really want the negative inverse, and -DV < y < DV
  return (y > 0) ? this.DV - y : -y
}

// Montgomery reduction
function Montgomery(m) {
  this.m = m
  this.mp = m.invDigit()
  this.mpl = this.mp & 0x7fff
  this.mph = this.mp >> 15
  this.um = (1 << (m.DB - 15)) - 1
  this.mt2 = 2 * m.t
}

// xR mod m
function montConvert(x) {
  var r = new BigInteger()
  x.abs()
    .dlShiftTo(this.m.t, r)
  r.divRemTo(this.m, null, r)
  if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r)
  return r
}

// x/R mod m
function montRevert(x) {
  var r = new BigInteger()
  x.copyTo(r)
  this.reduce(r)
  return r
}

// x = x/R mod m (HAC 14.32)
function montReduce(x) {
  while (x.t <= this.mt2) // pad x so am has enough room later
    x[x.t++] = 0
  for (var i = 0; i < this.m.t; ++i) {
    // faster way of calculating u0 = x[i]*mp mod DV
    var j = x[i] & 0x7fff
    var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM
    // use am to combine the multiply-shift-add into one call
    j = i + this.m.t
    x[j] += this.m.am(0, u0, x, i, 0, this.m.t)
    // propagate carry
    while (x[j] >= x.DV) {
      x[j] -= x.DV
      x[++j]++
    }
  }
  x.clamp()
  x.drShiftTo(this.m.t, x)
  if (x.compareTo(this.m) >= 0) x.subTo(this.m, x)
}

// r = "x^2/R mod m"; x != r
function montSqrTo(x, r) {
  x.squareTo(r)
  this.reduce(r)
}

// r = "xy/R mod m"; x,y != r
function montMulTo(x, y, r) {
  x.multiplyTo(y, r)
  this.reduce(r)
}

Montgomery.prototype.convert = montConvert
Montgomery.prototype.revert = montRevert
Montgomery.prototype.reduce = montReduce
Montgomery.prototype.mulTo = montMulTo
Montgomery.prototype.sqrTo = montSqrTo

// (protected) true iff this is even
function bnpIsEven() {
  return ((this.t > 0) ? (this[0] & 1) : this.s) == 0
}

// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
function bnpExp(e, z) {
  if (e > 0xffffffff || e < 1) return BigInteger.ONE
  var r = new BigInteger(),
    r2 = new BigInteger(),
    g = z.convert(this),
    i = nbits(e) - 1
  g.copyTo(r)
  while (--i >= 0) {
    z.sqrTo(r, r2)
    if ((e & (1 << i)) > 0) z.mulTo(r2, g, r)
    else {
      var t = r
      r = r2
      r2 = t
    }
  }
  return z.revert(r)
}

// (public) this^e % m, 0 <= e < 2^32
function bnModPowInt(e, m) {
  var z
  if (e < 256 || m.isEven()) z = new Classic(m)
  else z = new Montgomery(m)
  return this.exp(e, z)
}

// protected
proto.copyTo = bnpCopyTo
proto.fromInt = bnpFromInt
proto.fromString = bnpFromString
proto.clamp = bnpClamp
proto.dlShiftTo = bnpDLShiftTo
proto.drShiftTo = bnpDRShiftTo
proto.lShiftTo = bnpLShiftTo
proto.rShiftTo = bnpRShiftTo
proto.subTo = bnpSubTo
proto.multiplyTo = bnpMultiplyTo
proto.squareTo = bnpSquareTo
proto.divRemTo = bnpDivRemTo
proto.invDigit = bnpInvDigit
proto.isEven = bnpIsEven
proto.exp = bnpExp

// public
proto.toString = bnToString
proto.negate = bnNegate
proto.abs = bnAbs
proto.compareTo = bnCompareTo
proto.bitLength = bnBitLength
proto.byteLength = bnByteLength
proto.mod = bnMod
proto.modPowInt = bnModPowInt

// (public)
function bnClone() {
  var r = new BigInteger()
  this.copyTo(r)
  return r
}

// (public) return value as integer
function bnIntValue() {
  if (this.s < 0) {
    if (this.t == 1) return this[0] - this.DV
    else if (this.t == 0) return -1
  } else if (this.t == 1) return this[0]
  else if (this.t == 0) return 0
  // assumes 16 < DB < 32
  return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0]
}

// (public) return value as byte
function bnByteValue() {
  return (this.t == 0) ? this.s : (this[0] << 24) >> 24
}

// (public) return value as short (assumes DB>=16)
function bnShortValue() {
  return (this.t == 0) ? this.s : (this[0] << 16) >> 16
}

// (protected) return x s.t. r^x < DV
function bnpChunkSize(r) {
  return Math.floor(Math.LN2 * this.DB / Math.log(r))
}

// (public) 0 if this == 0, 1 if this > 0
function bnSigNum() {
  if (this.s < 0) return -1
  else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0
  else return 1
}

// (protected) convert to radix string
function bnpToRadix(b) {
  if (b == null) b = 10
  if (this.signum() == 0 || b < 2 || b > 36) return "0"
  var cs = this.chunkSize(b)
  var a = Math.pow(b, cs)
  var d = nbv(a),
    y = new BigInteger(),
    z = new BigInteger(),
    r = ""
  this.divRemTo(d, y, z)
  while (y.signum() > 0) {
    r = (a + z.intValue())
      .toString(b)
      .substr(1) + r
    y.divRemTo(d, y, z)
  }
  return z.intValue()
    .toString(b) + r
}

// (protected) convert from radix string
function bnpFromRadix(s, b) {
  var self = this
  self.fromInt(0)
  if (b == null) b = 10
  var cs = self.chunkSize(b)
  var d = Math.pow(b, cs),
    mi = false,
    j = 0,
    w = 0
  for (var i = 0; i < s.length; ++i) {
    var x = intAt(s, i)
    if (x < 0) {
      if (s.charAt(i) == "-" && self.signum() == 0) mi = true
      continue
    }
    w = b * w + x
    if (++j >= cs) {
      self.dMultiply(d)
      self.dAddOffset(w, 0)
      j = 0
      w = 0
    }
  }
  if (j > 0) {
    self.dMultiply(Math.pow(b, j))
    self.dAddOffset(w, 0)
  }
  if (mi) BigInteger.ZERO.subTo(self, self)
}

// (protected) alternate constructor
function bnpFromNumber(a, b, c) {
  var self = this
  if ("number" == typeof b) {
    // new BigInteger(int,int,RNG)
    if (a < 2) self.fromInt(1)
    else {
      self.fromNumber(a, c)
      if (!self.testBit(a - 1)) // force MSB set
        self.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, self)
      if (self.isEven()) self.dAddOffset(1, 0); // force odd
      while (!self.isProbablePrime(b)) {
        self.dAddOffset(2, 0)
        if (self.bitLength() > a) self.subTo(BigInteger.ONE.shiftLeft(a - 1), self)
      }
    }
  } else {
    // new BigInteger(int,RNG)
    var x = new Array(),
      t = a & 7
    x.length = (a >> 3) + 1
    b.nextBytes(x)
    if (t > 0) x[0] &= ((1 << t) - 1)
    else x[0] = 0
    self.fromString(x, 256)
  }
}

// (public) convert to bigendian byte array
function bnToByteArray() {
  var self = this
  var i = self.t,
    r = new Array()
  r[0] = self.s
  var p = self.DB - (i * self.DB) % 8,
    d, k = 0
  if (i-- > 0) {
    if (p < self.DB && (d = self[i] >> p) != (self.s & self.DM) >> p)
      r[k++] = d | (self.s << (self.DB - p))
    while (i >= 0) {
      if (p < 8) {
        d = (self[i] & ((1 << p) - 1)) << (8 - p)
        d |= self[--i] >> (p += self.DB - 8)
      } else {
        d = (self[i] >> (p -= 8)) & 0xff
        if (p <= 0) {
          p += self.DB
          --i
        }
      }
      if ((d & 0x80) != 0) d |= -256
      if (k === 0 && (self.s & 0x80) != (d & 0x80))++k
      if (k > 0 || d != self.s) r[k++] = d
    }
  }
  return r
}

function bnEquals(a) {
  return (this.compareTo(a) == 0)
}

function bnMin(a) {
  return (this.compareTo(a) < 0) ? this : a
}

function bnMax(a) {
  return (this.compareTo(a) > 0) ? this : a
}

// (protected) r = this op a (bitwise)
function bnpBitwiseTo(a, op, r) {
  var self = this
  var i, f, m = Math.min(a.t, self.t)
  for (i = 0; i < m; ++i) r[i] = op(self[i], a[i])
  if (a.t < self.t) {
    f = a.s & self.DM
    for (i = m; i < self.t; ++i) r[i] = op(self[i], f)
    r.t = self.t
  } else {
    f = self.s & self.DM
    for (i = m; i < a.t; ++i) r[i] = op(f, a[i])
    r.t = a.t
  }
  r.s = op(self.s, a.s)
  r.clamp()
}

// (public) this & a
function op_and(x, y) {
  return x & y
}

function bnAnd(a) {
  var r = new BigInteger()
  this.bitwiseTo(a, op_and, r)
  return r
}

// (public) this | a
function op_or(x, y) {
  return x | y
}

function bnOr(a) {
  var r = new BigInteger()
  this.bitwiseTo(a, op_or, r)
  return r
}

// (public) this ^ a
function op_xor(x, y) {
  return x ^ y
}

function bnXor(a) {
  var r = new BigInteger()
  this.bitwiseTo(a, op_xor, r)
  return r
}

// (public) this & ~a
function op_andnot(x, y) {
  return x & ~y
}

function bnAndNot(a) {
  var r = new BigInteger()
  this.bitwiseTo(a, op_andnot, r)
  return r
}

// (public) ~this
function bnNot() {
  var r = new BigInteger()
  for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i]
  r.t = this.t
  r.s = ~this.s
  return r
}

// (public) this << n
function bnShiftLeft(n) {
  var r = new BigInteger()
  if (n < 0) this.rShiftTo(-n, r)
  else this.lShiftTo(n, r)
  return r
}

// (public) this >> n
function bnShiftRight(n) {
  var r = new BigInteger()
  if (n < 0) this.lShiftTo(-n, r)
  else this.rShiftTo(n, r)
  return r
}

// return index of lowest 1-bit in x, x < 2^31
function lbit(x) {
  if (x == 0) return -1
  var r = 0
  if ((x & 0xffff) == 0) {
    x >>= 16
    r += 16
  }
  if ((x & 0xff) == 0) {
    x >>= 8
    r += 8
  }
  if ((x & 0xf) == 0) {
    x >>= 4
    r += 4
  }
  if ((x & 3) == 0) {
    x >>= 2
    r += 2
  }
  if ((x & 1) == 0)++r
  return r
}

// (public) returns index of lowest 1-bit (or -1 if none)
function bnGetLowestSetBit() {
  for (var i = 0; i < this.t; ++i)
    if (this[i] != 0) return i * this.DB + lbit(this[i])
  if (this.s < 0) return this.t * this.DB
  return -1
}

// return number of 1 bits in x
function cbit(x) {
  var r = 0
  while (x != 0) {
    x &= x - 1
    ++r
  }
  return r
}

// (public) return number of set bits
function bnBitCount() {
  var r = 0,
    x = this.s & this.DM
  for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x)
  return r
}

// (public) true iff nth bit is set
function bnTestBit(n) {
  var j = Math.floor(n / this.DB)
  if (j >= this.t) return (this.s != 0)
  return ((this[j] & (1 << (n % this.DB))) != 0)
}

// (protected) this op (1<<n)
function bnpChangeBit(n, op) {
  var r = BigInteger.ONE.shiftLeft(n)
  this.bitwiseTo(r, op, r)
  return r
}

// (public) this | (1<<n)
function bnSetBit(n) {
  return this.changeBit(n, op_or)
}

// (public) this & ~(1<<n)
function bnClearBit(n) {
  return this.changeBit(n, op_andnot)
}

// (public) this ^ (1<<n)
function bnFlipBit(n) {
  return this.changeBit(n, op_xor)
}

// (protected) r = this + a
function bnpAddTo(a, r) {
  var self = this

  var i = 0,
    c = 0,
    m = Math.min(a.t, self.t)
  while (i < m) {
    c += self[i] + a[i]
    r[i++] = c & self.DM
    c >>= self.DB
  }
  if (a.t < self.t) {
    c += a.s
    while (i < self.t) {
      c += self[i]
      r[i++] = c & self.DM
      c >>= self.DB
    }
    c += self.s
  } else {
    c += self.s
    while (i < a.t) {
      c += a[i]
      r[i++] = c & self.DM
      c >>= self.DB
    }
    c += a.s
  }
  r.s = (c < 0) ? -1 : 0
  if (c > 0) r[i++] = c
  else if (c < -1) r[i++] = self.DV + c
  r.t = i
  r.clamp()
}

// (public) this + a
function bnAdd(a) {
  var r = new BigInteger()
  this.addTo(a, r)
  return r
}

// (public) this - a
function bnSubtract(a) {
  var r = new BigInteger()
  this.subTo(a, r)
  return r
}

// (public) this * a
function bnMultiply(a) {
  var r = new BigInteger()
  this.multiplyTo(a, r)
  return r
}

// (public) this^2
function bnSquare() {
  var r = new BigInteger()
  this.squareTo(r)
  return r
}

// (public) this / a
function bnDivide(a) {
  var r = new BigInteger()
  this.divRemTo(a, r, null)
  return r
}

// (public) this % a
function bnRemainder(a) {
  var r = new BigInteger()
  this.divRemTo(a, null, r)
  return r
}

// (public) [this/a,this%a]
function bnDivideAndRemainder(a) {
  var q = new BigInteger(),
    r = new BigInteger()
  this.divRemTo(a, q, r)
  return new Array(q, r)
}

// (protected) this *= n, this >= 0, 1 < n < DV
function bnpDMultiply(n) {
  this[this.t] = this.am(0, n - 1, this, 0, 0, this.t)
  ++this.t
  this.clamp()
}

// (protected) this += n << w words, this >= 0
function bnpDAddOffset(n, w) {
  if (n == 0) return
  while (this.t <= w) this[this.t++] = 0
  this[w] += n
  while (this[w] >= this.DV) {
    this[w] -= this.DV
    if (++w >= this.t) this[this.t++] = 0
    ++this[w]
  }
}

// A "null" reducer
function NullExp() {}

function nNop(x) {
  return x
}

function nMulTo(x, y, r) {
  x.multiplyTo(y, r)
}

function nSqrTo(x, r) {
  x.squareTo(r)
}

NullExp.prototype.convert = nNop
NullExp.prototype.revert = nNop
NullExp.prototype.mulTo = nMulTo
NullExp.prototype.sqrTo = nSqrTo

// (public) this^e
function bnPow(e) {
  return this.exp(e, new NullExp())
}

// (protected) r = lower n words of "this * a", a.t <= n
// "this" should be the larger one if appropriate.
function bnpMultiplyLowerTo(a, n, r) {
  var i = Math.min(this.t + a.t, n)
  r.s = 0; // assumes a,this >= 0
  r.t = i
  while (i > 0) r[--i] = 0
  var j
  for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t)
  for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i)
  r.clamp()
}

// (protected) r = "this * a" without lower n words, n > 0
// "this" should be the larger one if appropriate.
function bnpMultiplyUpperTo(a, n, r) {
  --n
  var i = r.t = this.t + a.t - n
  r.s = 0; // assumes a,this >= 0
  while (--i >= 0) r[i] = 0
  for (i = Math.max(n - this.t, 0); i < a.t; ++i)
    r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n)
  r.clamp()
  r.drShiftTo(1, r)
}

// Barrett modular reduction
function Barrett(m) {
  // setup Barrett
  this.r2 = new BigInteger()
  this.q3 = new BigInteger()
  BigInteger.ONE.dlShiftTo(2 * m.t, this.r2)
  this.mu = this.r2.divide(m)
  this.m = m
}

function barrettConvert(x) {
  if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m)
  else if (x.compareTo(this.m) < 0) return x
  else {
    var r = new BigInteger()
    x.copyTo(r)
    this.reduce(r)
    return r
  }
}

function barrettRevert(x) {
  return x
}

// x = x mod m (HAC 14.42)
function barrettReduce(x) {
  var self = this
  x.drShiftTo(self.m.t - 1, self.r2)
  if (x.t > self.m.t + 1) {
    x.t = self.m.t + 1
    x.clamp()
  }
  self.mu.multiplyUpperTo(self.r2, self.m.t + 1, self.q3)
  self.m.multiplyLowerTo(self.q3, self.m.t + 1, self.r2)
  while (x.compareTo(self.r2) < 0) x.dAddOffset(1, self.m.t + 1)
  x.subTo(self.r2, x)
  while (x.compareTo(self.m) >= 0) x.subTo(self.m, x)
}

// r = x^2 mod m; x != r
function barrettSqrTo(x, r) {
  x.squareTo(r)
  this.reduce(r)
}

// r = x*y mod m; x,y != r
function barrettMulTo(x, y, r) {
  x.multiplyTo(y, r)
  this.reduce(r)
}

Barrett.prototype.convert = barrettConvert
Barrett.prototype.revert = barrettRevert
Barrett.prototype.reduce = barrettReduce
Barrett.prototype.mulTo = barrettMulTo
Barrett.prototype.sqrTo = barrettSqrTo

// (public) this^e % m (HAC 14.85)
function bnModPow(e, m) {
  var i = e.bitLength(),
    k, r = nbv(1),
    z
  if (i <= 0) return r
  else if (i < 18) k = 1
  else if (i < 48) k = 3
  else if (i < 144) k = 4
  else if (i < 768) k = 5
  else k = 6
  if (i < 8)
    z = new Classic(m)
  else if (m.isEven())
    z = new Barrett(m)
  else
    z = new Montgomery(m)

  // precomputation
  var g = new Array(),
    n = 3,
    k1 = k - 1,
    km = (1 << k) - 1
  g[1] = z.convert(this)
  if (k > 1) {
    var g2 = new BigInteger()
    z.sqrTo(g[1], g2)
    while (n <= km) {
      g[n] = new BigInteger()
      z.mulTo(g2, g[n - 2], g[n])
      n += 2
    }
  }

  var j = e.t - 1,
    w, is1 = true,
    r2 = new BigInteger(),
    t
  i = nbits(e[j]) - 1
  while (j >= 0) {
    if (i >= k1) w = (e[j] >> (i - k1)) & km
    else {
      w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i)
      if (j > 0) w |= e[j - 1] >> (this.DB + i - k1)
    }

    n = k
    while ((w & 1) == 0) {
      w >>= 1
      --n
    }
    if ((i -= n) < 0) {
      i += this.DB
      --j
    }
    if (is1) { // ret == 1, don't bother squaring or multiplying it
      g[w].copyTo(r)
      is1 = false
    } else {
      while (n > 1) {
        z.sqrTo(r, r2)
        z.sqrTo(r2, r)
        n -= 2
      }
      if (n > 0) z.sqrTo(r, r2)
      else {
        t = r
        r = r2
        r2 = t
      }
      z.mulTo(r2, g[w], r)
    }

    while (j >= 0 && (e[j] & (1 << i)) == 0) {
      z.sqrTo(r, r2)
      t = r
      r = r2
      r2 = t
      if (--i < 0) {
        i = this.DB - 1
        --j
      }
    }
  }
  return z.revert(r)
}

// (public) gcd(this,a) (HAC 14.54)
function bnGCD(a) {
  var x = (this.s < 0) ? this.negate() : this.clone()
  var y = (a.s < 0) ? a.negate() : a.clone()
  if (x.compareTo(y) < 0) {
    var t = x
    x = y
    y = t
  }
  var i = x.getLowestSetBit(),
    g = y.getLowestSetBit()
  if (g < 0) return x
  if (i < g) g = i
  if (g > 0) {
    x.rShiftTo(g, x)
    y.rShiftTo(g, y)
  }
  while (x.signum() > 0) {
    if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x)
    if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y)
    if (x.compareTo(y) >= 0) {
      x.subTo(y, x)
      x.rShiftTo(1, x)
    } else {
      y.subTo(x, y)
      y.rShiftTo(1, y)
    }
  }
  if (g > 0) y.lShiftTo(g, y)
  return y
}

// (protected) this % n, n < 2^26
function bnpModInt(n) {
  if (n <= 0) return 0
  var d = this.DV % n,
    r = (this.s < 0) ? n - 1 : 0
  if (this.t > 0)
    if (d == 0) r = this[0] % n
    else
      for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n
  return r
}

// (public) 1/this % m (HAC 14.61)
function bnModInverse(m) {
  var ac = m.isEven()
  if (this.signum() === 0) throw new Error('division by zero')
  if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO
  var u = m.clone(),
    v = this.clone()
  var a = nbv(1),
    b = nbv(0),
    c = nbv(0),
    d = nbv(1)
  while (u.signum() != 0) {
    while (u.isEven()) {
      u.rShiftTo(1, u)
      if (ac) {
        if (!a.isEven() || !b.isEven()) {
          a.addTo(this, a)
          b.subTo(m, b)
        }
        a.rShiftTo(1, a)
      } else if (!b.isEven()) b.subTo(m, b)
      b.rShiftTo(1, b)
    }
    while (v.isEven()) {
      v.rShiftTo(1, v)
      if (ac) {
        if (!c.isEven() || !d.isEven()) {
          c.addTo(this, c)
          d.subTo(m, d)
        }
        c.rShiftTo(1, c)
      } else if (!d.isEven()) d.subTo(m, d)
      d.rShiftTo(1, d)
    }
    if (u.compareTo(v) >= 0) {
      u.subTo(v, u)
      if (ac) a.subTo(c, a)
      b.subTo(d, b)
    } else {
      v.subTo(u, v)
      if (ac) c.subTo(a, c)
      d.subTo(b, d)
    }
  }
  if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO
  if (d.compareTo(m) >= 0) return d.subtract(m)
  if (d.signum() < 0) d.addTo(m, d)
  else return d
  if (d.signum() < 0) return d.add(m)
  else return d
}

var lowprimes = [
  2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71,
  73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151,
  157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233,
  239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317,
  331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419,
  421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503,
  509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607,
  613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701,
  709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811,
  821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911,
  919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997
]

var lplim = (1 << 26) / lowprimes[lowprimes.length - 1]

// (public) test primality with certainty >= 1-.5^t
function bnIsProbablePrime(t) {
  var i, x = this.abs()
  if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) {
    for (i = 0; i < lowprimes.length; ++i)
      if (x[0] == lowprimes[i]) return true
    return false
  }
  if (x.isEven()) return false
  i = 1
  while (i < lowprimes.length) {
    var m = lowprimes[i],
      j = i + 1
    while (j < lowprimes.length && m < lplim) m *= lowprimes[j++]
    m = x.modInt(m)
    while (i < j) if (m % lowprimes[i++] == 0) return false
  }
  return x.millerRabin(t)
}

// (protected) true if probably prime (HAC 4.24, Miller-Rabin)
function bnpMillerRabin(t) {
  var n1 = this.subtract(BigInteger.ONE)
  var k = n1.getLowestSetBit()
  if (k <= 0) return false
  var r = n1.shiftRight(k)
  t = (t + 1) >> 1
  if (t > lowprimes.length) t = lowprimes.length
  var a = new BigInteger(null)
  var j, bases = []
  for (var i = 0; i < t; ++i) {
    for (;;) {
      j = lowprimes[Math.floor(Math.random() * lowprimes.length)]
      if (bases.indexOf(j) == -1) break
    }
    bases.push(j)
    a.fromInt(j)
    var y = a.modPow(r, this)
    if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
      var j = 1
      while (j++ < k && y.compareTo(n1) != 0) {
        y = y.modPowInt(2, this)
        if (y.compareTo(BigInteger.ONE) == 0) return false
      }
      if (y.compareTo(n1) != 0) return false
    }
  }
  return true
}

// protected
proto.chunkSize = bnpChunkSize
proto.toRadix = bnpToRadix
proto.fromRadix = bnpFromRadix
proto.fromNumber = bnpFromNumber
proto.bitwiseTo = bnpBitwiseTo
proto.changeBit = bnpChangeBit
proto.addTo = bnpAddTo
proto.dMultiply = bnpDMultiply
proto.dAddOffset = bnpDAddOffset
proto.multiplyLowerTo = bnpMultiplyLowerTo
proto.multiplyUpperTo = bnpMultiplyUpperTo
proto.modInt = bnpModInt
proto.millerRabin = bnpMillerRabin

// public
proto.clone = bnClone
proto.intValue = bnIntValue
proto.byteValue = bnByteValue
proto.shortValue = bnShortValue
proto.signum = bnSigNum
proto.toByteArray = bnToByteArray
proto.equals = bnEquals
proto.min = bnMin
proto.max = bnMax
proto.and = bnAnd
proto.or = bnOr
proto.xor = bnXor
proto.andNot = bnAndNot
proto.not = bnNot
proto.shiftLeft = bnShiftLeft
proto.shiftRight = bnShiftRight
proto.getLowestSetBit = bnGetLowestSetBit
proto.bitCount = bnBitCount
proto.testBit = bnTestBit
proto.setBit = bnSetBit
proto.clearBit = bnClearBit
proto.flipBit = bnFlipBit
proto.add = bnAdd
proto.subtract = bnSubtract
proto.multiply = bnMultiply
proto.divide = bnDivide
proto.remainder = bnRemainder
proto.divideAndRemainder = bnDivideAndRemainder
proto.modPow = bnModPow
proto.modInverse = bnModInverse
proto.pow = bnPow
proto.gcd = bnGCD
proto.isProbablePrime = bnIsProbablePrime

// JSBN-specific extension
proto.square = bnSquare

// constants
BigInteger.ZERO = nbv(0)
BigInteger.ONE = nbv(1)
BigInteger.valueOf = nbv

module.exports = BigInteger

},{"../package.json":8}],6:[function(require,module,exports){
(function (Buffer){
// FIXME: Kind of a weird way to throw exceptions, consider removing
var assert = require('assert')
var BigInteger = require('./bigi')

/**
 * Turns a byte array into a big integer.
 *
 * This function will interpret a byte array as a big integer in big
 * endian notation.
 */
BigInteger.fromByteArrayUnsigned = function(byteArray) {
  // BigInteger expects a DER integer conformant byte array
  if (byteArray[0] & 0x80) {
    return new BigInteger([0].concat(byteArray))
  }

  return new BigInteger(byteArray)
}

/**
 * Returns a byte array representation of the big integer.
 *
 * This returns the absolute of the contained value in big endian
 * form. A value of zero results in an empty array.
 */
BigInteger.prototype.toByteArrayUnsigned = function() {
  var byteArray = this.toByteArray()
  return byteArray[0] === 0 ? byteArray.slice(1) : byteArray
}

BigInteger.fromDERInteger = function(byteArray) {
  return new BigInteger(byteArray)
}

/*
 * Converts BigInteger to a DER integer representation.
 *
 * The format for this value uses the most significant bit as a sign
 * bit.  If the most significant bit is already set and the integer is
 * positive, a 0x00 is prepended.
 *
 * Examples:
 *
 *      0 =>     0x00
 *      1 =>     0x01
 *     -1 =>     0xff
 *    127 =>     0x7f
 *   -127 =>     0x81
 *    128 =>   0x0080
 *   -128 =>     0x80
 *    255 =>   0x00ff
 *   -255 =>   0xff01
 *  16300 =>   0x3fac
 * -16300 =>   0xc054
 *  62300 => 0x00f35c
 * -62300 => 0xff0ca4
*/
BigInteger.prototype.toDERInteger = BigInteger.prototype.toByteArray

BigInteger.fromBuffer = function(buffer) {
  // BigInteger expects a DER integer conformant byte array
  if (buffer[0] & 0x80) {
    var byteArray = Array.prototype.slice.call(buffer)

    return new BigInteger([0].concat(byteArray))
  }

  return new BigInteger(buffer)
}

BigInteger.fromHex = function(hex) {
  if (hex === '') return BigInteger.ZERO

  assert.equal(hex, hex.match(/^[A-Fa-f0-9]+/), 'Invalid hex string')
  assert.equal(hex.length % 2, 0, 'Incomplete hex')
  return new BigInteger(hex, 16)
}

BigInteger.prototype.toBuffer = function(size) {
  var byteArray = this.toByteArrayUnsigned()
  var zeros = []

  var padding = size - byteArray.length
  while (zeros.length < padding) zeros.push(0)

  return new Buffer(zeros.concat(byteArray))
}

BigInteger.prototype.toHex = function(size) {
  return this.toBuffer(size).toString('hex')
}

}).call(this,require("buffer").Buffer)
},{"./bigi":5,"assert":162,"buffer":177}],7:[function(require,module,exports){
var BigInteger = require('./bigi')

//addons
require('./convert')

module.exports = BigInteger
},{"./bigi":5,"./convert":6}],8:[function(require,module,exports){
module.exports={
  "name": "bigi",
  "version": "1.4.1",
  "description": "Big integers.",
  "keywords": [
    "cryptography",
    "math",
    "bitcoin",
    "arbitrary",
    "precision",
    "arithmetic",
    "big",
    "integer",
    "int",
    "number",
    "biginteger",
    "bigint",
    "bignumber",
    "decimal",
    "float"
  ],
  "devDependencies": {
    "coveralls": "^2.11.2",
    "istanbul": "^0.3.5",
    "jshint": "^2.5.1",
    "mocha": "^2.1.0",
    "mochify": "^2.1.0"
  },
  "repository": {
    "url": "git+https://github.com/cryptocoinjs/bigi.git",
    "type": "git"
  },
  "main": "./lib/index.js",
  "scripts": {
    "browser-test": "mochify --wd -R spec",
    "test": "_mocha -- test/*.js",
    "jshint": "jshint --config jshint.json lib/*.js ; true",
    "unit": "mocha",
    "coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter list test/*.js",
    "coveralls": "npm run-script coverage && node ./node_modules/.bin/coveralls < coverage/lcov.info"
  },
  "dependencies": {},
  "testling": {
    "files": "test/*.js",
    "harness": "mocha",
    "browsers": [
      "ie/9..latest",
      "firefox/latest",
      "chrome/latest",
      "safari/6.0..latest",
      "iphone/6.0..latest",
      "android-browser/4.2..latest"
    ]
  },
  "gitHead": "7d034a1b38ca90f68daa9de472dda2fb813836f1",
  "bugs": {
    "url": "https://github.com/cryptocoinjs/bigi/issues"
  },
  "homepage": "https://github.com/cryptocoinjs/bigi#readme",
  "_id": "bigi@1.4.1",
  "_shasum": "726e8ab08d1fe1dfb8aa6bb6309bffecf93a21b7",
  "_from": "bigi@^1.4.0",
  "_npmVersion": "2.10.1",
  "_nodeVersion": "2.1.0",
  "_npmUser": {
    "name": "jprichardson",
    "email": "jprichardson@gmail.com"
  },
  "maintainers": [
    {
      "name": "midnightlightning",
      "email": "boydb@midnightdesign.ws"
    },
    {
      "name": "sidazhang",
      "email": "sidazhang89@gmail.com"
    },
    {
      "name": "nadav",
      "email": "npm@shesek.info"
    },
    {
      "name": "jprichardson",
      "email": "jprichardson@gmail.com"
    }
  ],
  "dist": {
    "shasum": "726e8ab08d1fe1dfb8aa6bb6309bffecf93a21b7",
    "tarball": "http://registry.npmjs.org/bigi/-/bigi-1.4.1.tgz"
  },
  "directories": {},
  "_resolved": "https://registry.npmjs.org/bigi/-/bigi-1.4.1.tgz",
  "readme": "ERROR: No README data found!"
}

},{}],9:[function(require,module,exports){
(function (Buffer){
// Reference https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki
// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
// NOTE: SIGHASH byte ignored AND restricted, truncate before use

function check (buffer) {
  if (buffer.length < 8) return false
  if (buffer.length > 72) return false
  if (buffer[0] !== 0x30) return false
  if (buffer[1] !== buffer.length - 2) return false
  if (buffer[2] !== 0x02) return false

  var lenR = buffer[3]
  if (lenR === 0) return false
  if (5 + lenR >= buffer.length) return false
  if (buffer[4 + lenR] !== 0x02) return false

  var lenS = buffer[5 + lenR]
  if (lenS === 0) return false
  if ((6 + lenR + lenS) !== buffer.length) return false

  if (buffer[4] & 0x80) return false
  if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) return false

  if (buffer[lenR + 6] & 0x80) return false
  if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) return false
  return true
}

function decode (buffer) {
  if (buffer.length < 8) throw new Error('DER sequence length is too short')
  if (buffer.length > 72) throw new Error('DER sequence length is too long')
  if (buffer[0] !== 0x30) throw new Error('Expected DER sequence')
  if (buffer[1] !== buffer.length - 2) throw new Error('DER sequence length is invalid')
  if (buffer[2] !== 0x02) throw new Error('Expected DER integer')

  var lenR = buffer[3]
  if (lenR === 0) throw new Error('R length is zero')
  if (5 + lenR >= buffer.length) throw new Error('R length is too long')
  if (buffer[4 + lenR] !== 0x02) throw new Error('Expected DER integer (2)')

  var lenS = buffer[5 + lenR]
  if (lenS === 0) throw new Error('S length is zero')
  if ((6 + lenR + lenS) !== buffer.length) throw new Error('S length is invalid')

  if (buffer[4] & 0x80) throw new Error('R value is negative')
  if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) throw new Error('R value excessively padded')

  if (buffer[lenR + 6] & 0x80) throw new Error('S value is negative')
  if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) throw new Error('S value excessively padded')

  // non-BIP66 - extract R, S values
  return {
    r: buffer.slice(4, 4 + lenR),
    s: buffer.slice(6 + lenR)
  }
}

/*
 * Expects r and s to be positive DER integers.
 *
 * The DER format uses the most significant bit as a sign bit (& 0x80).
 * If the significant bit is set AND the integer is positive, a 0x00 is prepended.
 *
 * Examples:
 *
 *      0 =>     0x00
 *      1 =>     0x01
 *     -1 =>     0xff
 *    127 =>     0x7f
 *   -127 =>     0x81
 *    128 =>   0x0080
 *   -128 =>     0x80
 *    255 =>   0x00ff
 *   -255 =>   0xff01
 *  16300 =>   0x3fac
 * -16300 =>   0xc054
 *  62300 => 0x00f35c
 * -62300 => 0xff0ca4
*/
function encode (r, s) {
  var lenR = r.length
  var lenS = s.length
  if (lenR === 0) throw new Error('R length is zero')
  if (lenS === 0) throw new Error('S length is zero')
  if (lenR > 33) throw new Error('R length is too long')
  if (lenS > 33) throw new Error('S length is too long')
  if (r[0] & 0x80) throw new Error('R value is negative')
  if (s[0] & 0x80) throw new Error('S value is negative')
  if (lenR > 1 && (r[0] === 0x00) && !(r[1] & 0x80)) throw new Error('R value excessively padded')
  if (lenS > 1 && (s[0] === 0x00) && !(s[1] & 0x80)) throw new Error('S value excessively padded')

  var signature = new Buffer(6 + lenR + lenS)

  // 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
  signature[0] = 0x30
  signature[1] = signature.length - 2
  signature[2] = 0x02
  signature[3] = r.length
  r.copy(signature, 4)
  signature[4 + lenR] = 0x02
  signature[5 + lenR] = s.length
  s.copy(signature, 6 + lenR)

  return signature
}

module.exports = {
  check: check,
  decode: decode,
  encode: encode
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],10:[function(require,module,exports){
(function (Buffer){
'use strict'

var base58 = require('bs58')
var createHash = require('create-hash')

// SHA256(SHA256(buffer))
function sha256x2 (buffer) {
  buffer = createHash('sha256').update(buffer).digest()
  return createHash('sha256').update(buffer).digest()
}

// Encode a buffer as a base58-check encoded string
function encode (payload) {
  var checksum = sha256x2(payload).slice(0, 4)

  return base58.encode(Buffer.concat([
    payload,
    checksum
  ]))
}

// Decode a base58-check encoded string to a buffer
function decode (string) {
  var buffer = new Buffer(base58.decode(string))

  var payload = buffer.slice(0, -4)
  var checksum = buffer.slice(-4)
  var newChecksum = sha256x2(payload).slice(0, 4)

  for (var i = 0; i < newChecksum.length; ++i) {
    if (newChecksum[i] === checksum[i]) continue

    throw new Error('Invalid checksum')
  }

  return payload
}

module.exports = {
  encode: encode,
  decode: decode
}

}).call(this,require("buffer").Buffer)
},{"bs58":11,"buffer":177,"create-hash":14}],11:[function(require,module,exports){
// Base58 encoding/decoding
// Originally written by Mike Hearn for BitcoinJ
// Copyright (c) 2011 Google Inc
// Ported to JavaScript by Stefan Thomas
// Merged Buffer refactorings from base58-native by Stephen Pair
// Copyright (c) 2013 BitPay Inc

var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
var ALPHABET_MAP = {}
for(var i = 0; i < ALPHABET.length; i++) {
  ALPHABET_MAP[ALPHABET.charAt(i)] = i
}
var BASE = 58

function encode(buffer) {
  if (buffer.length === 0) return ''

  var i, j, digits = [0]
  for (i = 0; i < buffer.length; i++) {
    for (j = 0; j < digits.length; j++) digits[j] <<= 8

    digits[0] += buffer[i]

    var carry = 0
    for (j = 0; j < digits.length; ++j) {
      digits[j] += carry

      carry = (digits[j] / BASE) | 0
      digits[j] %= BASE
    }

    while (carry) {
      digits.push(carry % BASE)

      carry = (carry / BASE) | 0
    }
  }

  // deal with leading zeros
  for (i = 0; buffer[i] === 0 && i < buffer.length - 1; i++) digits.push(0)

  // convert digits to a string
  var stringOutput = ""
  for (var i = digits.length - 1; i >= 0; i--) {
    stringOutput = stringOutput + ALPHABET[digits[i]]
  }
  return stringOutput
}

function decode(string) {
  if (string.length === 0) return []

  var i, j, bytes = [0]
  for (i = 0; i < string.length; i++) {
    var c = string[i]
    if (!(c in ALPHABET_MAP)) throw new Error('Non-base58 character')

    for (j = 0; j < bytes.length; j++) bytes[j] *= BASE
    bytes[0] += ALPHABET_MAP[c]

    var carry = 0
    for (j = 0; j < bytes.length; ++j) {
      bytes[j] += carry

      carry = bytes[j] >> 8
      bytes[j] &= 0xff
    }

    while (carry) {
      bytes.push(carry & 0xff)

      carry >>= 8
    }
  }

  // deal with leading zeros
  for (i = 0; string[i] === '1' && i < string.length - 1; i++) bytes.push(0)

  return bytes.reverse()
}

module.exports = {
  encode: encode,
  decode: decode
}

},{}],12:[function(require,module,exports){
(function (Buffer){
'use strict';
module.exports = function (a, b) {
	if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
		throw new TypeError('Arguments must be Buffers');
	}

	if (a === b) {
		return true;
	}

	if (typeof a.equals === 'function') {
		return a.equals(b);
	}

	if (a.length !== b.length) {
		return false;
	}

	for (var i = 0; i < a.length; i++) {
		if (a[i] !== b[i]) {
			return false;
		}
	}

	return true;
};

}).call(this,{"isBuffer":require("../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":378}],13:[function(require,module,exports){
(function (Buffer){
module.exports = function reverse (a) {
  var length = a.length
  var buffer = new Buffer(length)

  for (var i = 0, j = length - 1; i < length; ++i, --j) {
    buffer[i] = a[j]
  }

  return buffer
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],14:[function(require,module,exports){
(function (Buffer){
'use strict';
var inherits = require('inherits')
var md5 = require('./md5')
var rmd160 = require('ripemd160')
var sha = require('sha.js')

var Base = require('cipher-base')

function HashNoConstructor(hash) {
  Base.call(this, 'digest')

  this._hash = hash
  this.buffers = []
}

inherits(HashNoConstructor, Base)

HashNoConstructor.prototype._update = function (data) {
  this.buffers.push(data)
}

HashNoConstructor.prototype._final = function () {
  var buf = Buffer.concat(this.buffers)
  var r = this._hash(buf)
  this.buffers = null

  return r
}

function Hash(hash) {
  Base.call(this, 'digest')

  this._hash = hash
}

inherits(Hash, Base)

Hash.prototype._update = function (data) {
  this._hash.update(data)
}

Hash.prototype._final = function () {
  return this._hash.digest()
}

module.exports = function createHash (alg) {
  alg = alg.toLowerCase()
  if ('md5' === alg) return new HashNoConstructor(md5)
  if ('rmd160' === alg || 'ripemd160' === alg) return new HashNoConstructor(rmd160)

  return new Hash(sha(alg))
}

}).call(this,require("buffer").Buffer)
},{"./md5":16,"buffer":177,"cipher-base":17,"inherits":52,"ripemd160":18,"sha.js":20}],15:[function(require,module,exports){
(function (Buffer){
'use strict';
var intSize = 4;
var zeroBuffer = new Buffer(intSize); zeroBuffer.fill(0);
var chrsz = 8;

function toArray(buf, bigEndian) {
  if ((buf.length % intSize) !== 0) {
    var len = buf.length + (intSize - (buf.length % intSize));
    buf = Buffer.concat([buf, zeroBuffer], len);
  }

  var arr = [];
  var fn = bigEndian ? buf.readInt32BE : buf.readInt32LE;
  for (var i = 0; i < buf.length; i += intSize) {
    arr.push(fn.call(buf, i));
  }
  return arr;
}

function toBuffer(arr, size, bigEndian) {
  var buf = new Buffer(size);
  var fn = bigEndian ? buf.writeInt32BE : buf.writeInt32LE;
  for (var i = 0; i < arr.length; i++) {
    fn.call(buf, arr[i], i * 4, true);
  }
  return buf;
}

function hash(buf, fn, hashSize, bigEndian) {
  if (!Buffer.isBuffer(buf)) buf = new Buffer(buf);
  var arr = fn(toArray(buf, bigEndian), buf.length * chrsz);
  return toBuffer(arr, hashSize, bigEndian);
}
exports.hash = hash;
}).call(this,require("buffer").Buffer)
},{"buffer":177}],16:[function(require,module,exports){
'use strict';
/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */

var helpers = require('./helpers');

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length
 */
function core_md5(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;

  for(var i = 0; i < x.length; i += 16)
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
  }
  return Array(a, b, c, d);

}

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

module.exports = function md5(buf) {
  return helpers.hash(buf, core_md5, 16);
};
},{"./helpers":15}],17:[function(require,module,exports){
(function (Buffer){
var Transform = require('stream').Transform
var inherits = require('inherits')
var StringDecoder = require('string_decoder').StringDecoder
module.exports = CipherBase
inherits(CipherBase, Transform)
function CipherBase (hashMode) {
  Transform.call(this)
  this.hashMode = typeof hashMode === 'string'
  if (this.hashMode) {
    this[hashMode] = this._finalOrDigest
  } else {
    this.final = this._finalOrDigest
  }
  this._decoder = null
  this._encoding = null
}
CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
  if (typeof data === 'string') {
    data = new Buffer(data, inputEnc)
  }
  var outData = this._update(data)
  if (this.hashMode) {
    return this
  }
  if (outputEnc) {
    outData = this._toString(outData, outputEnc)
  }
  return outData
}

CipherBase.prototype.setAutoPadding = function () {}

CipherBase.prototype.getAuthTag = function () {
  throw new Error('trying to get auth tag in unsupported state')
}

CipherBase.prototype.setAuthTag = function () {
  throw new Error('trying to set auth tag in unsupported state')
}

CipherBase.prototype.setAAD = function () {
  throw new Error('trying to set aad in unsupported state')
}

CipherBase.prototype._transform = function (data, _, next) {
  var err
  try {
    if (this.hashMode) {
      this._update(data)
    } else {
      this.push(this._update(data))
    }
  } catch (e) {
    err = e
  } finally {
    next(err)
  }
}
CipherBase.prototype._flush = function (done) {
  var err
  try {
    this.push(this._final())
  } catch (e) {
    err = e
  } finally {
    done(err)
  }
}
CipherBase.prototype._finalOrDigest = function (outputEnc) {
  var outData = this._final() || new Buffer('')
  if (outputEnc) {
    outData = this._toString(outData, outputEnc, true)
  }
  return outData
}

CipherBase.prototype._toString = function (value, enc, final) {
  if (!this._decoder) {
    this._decoder = new StringDecoder(enc)
    this._encoding = enc
  }
  if (this._encoding !== enc) {
    throw new Error('can\'t switch encodings')
  }
  var out = this._decoder.write(value)
  if (final) {
    out += this._decoder.end()
  }
  return out
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"inherits":52,"stream":399,"string_decoder":406}],18:[function(require,module,exports){
(function (Buffer){
/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
/** @preserve
(c) 2012 by Cédric Mesnil. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

// constants table
var zl = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
]

var zr = [
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
]

var sl = [
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
]

var sr = [
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
]

var hl = [0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E]
var hr = [0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000]

function bytesToWords (bytes) {
  var words = []
  for (var i = 0, b = 0; i < bytes.length; i++, b += 8) {
    words[b >>> 5] |= bytes[i] << (24 - b % 32)
  }
  return words
}

function wordsToBytes (words) {
  var bytes = []
  for (var b = 0; b < words.length * 32; b += 8) {
    bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF)
  }
  return bytes
}

function processBlock (H, M, offset) {
  // swap endian
  for (var i = 0; i < 16; i++) {
    var offset_i = offset + i
    var M_offset_i = M[offset_i]

    // Swap
    M[offset_i] = (
      (((M_offset_i << 8) | (M_offset_i >>> 24)) & 0x00ff00ff) |
      (((M_offset_i << 24) | (M_offset_i >>> 8)) & 0xff00ff00)
    )
  }

  // Working variables
  var al, bl, cl, dl, el
  var ar, br, cr, dr, er

  ar = al = H[0]
  br = bl = H[1]
  cr = cl = H[2]
  dr = dl = H[3]
  er = el = H[4]

  // computation
  var t
  for (i = 0; i < 80; i += 1) {
    t = (al + M[offset + zl[i]]) | 0
    if (i < 16) {
      t += f1(bl, cl, dl) + hl[0]
    } else if (i < 32) {
      t += f2(bl, cl, dl) + hl[1]
    } else if (i < 48) {
      t += f3(bl, cl, dl) + hl[2]
    } else if (i < 64) {
      t += f4(bl, cl, dl) + hl[3]
    } else {// if (i<80) {
      t += f5(bl, cl, dl) + hl[4]
    }
    t = t | 0
    t = rotl(t, sl[i])
    t = (t + el) | 0
    al = el
    el = dl
    dl = rotl(cl, 10)
    cl = bl
    bl = t

    t = (ar + M[offset + zr[i]]) | 0
    if (i < 16) {
      t += f5(br, cr, dr) + hr[0]
    } else if (i < 32) {
      t += f4(br, cr, dr) + hr[1]
    } else if (i < 48) {
      t += f3(br, cr, dr) + hr[2]
    } else if (i < 64) {
      t += f2(br, cr, dr) + hr[3]
    } else {// if (i<80) {
      t += f1(br, cr, dr) + hr[4]
    }

    t = t | 0
    t = rotl(t, sr[i])
    t = (t + er) | 0
    ar = er
    er = dr
    dr = rotl(cr, 10)
    cr = br
    br = t
  }

  // intermediate hash value
  t = (H[1] + cl + dr) | 0
  H[1] = (H[2] + dl + er) | 0
  H[2] = (H[3] + el + ar) | 0
  H[3] = (H[4] + al + br) | 0
  H[4] = (H[0] + bl + cr) | 0
  H[0] = t
}

function f1 (x, y, z) {
  return ((x) ^ (y) ^ (z))
}

function f2 (x, y, z) {
  return (((x) & (y)) | ((~x) & (z)))
}

function f3 (x, y, z) {
  return (((x) | (~(y))) ^ (z))
}

function f4 (x, y, z) {
  return (((x) & (z)) | ((y) & (~(z))))
}

function f5 (x, y, z) {
  return ((x) ^ ((y) | (~(z))))
}

function rotl (x, n) {
  return (x << n) | (x >>> (32 - n))
}

function ripemd160 (message) {
  var H = [0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0]

  if (typeof message === 'string') {
    message = new Buffer(message, 'utf8')
  }

  var m = bytesToWords(message)

  var nBitsLeft = message.length * 8
  var nBitsTotal = message.length * 8

  // Add padding
  m[nBitsLeft >>> 5] |= 0x80 << (24 - nBitsLeft % 32)
  m[(((nBitsLeft + 64) >>> 9) << 4) + 14] = (
    (((nBitsTotal << 8) | (nBitsTotal >>> 24)) & 0x00ff00ff) |
    (((nBitsTotal << 24) | (nBitsTotal >>> 8)) & 0xff00ff00)
  )

  for (var i = 0; i < m.length; i += 16) {
    processBlock(H, m, i)
  }

  // swap endian
  for (i = 0; i < 5; i++) {
    // shortcut
    var H_i = H[i]

    // Swap
    H[i] = (((H_i << 8) | (H_i >>> 24)) & 0x00ff00ff) |
      (((H_i << 24) | (H_i >>> 8)) & 0xff00ff00)
  }

  var digestbytes = wordsToBytes(H)
  return new Buffer(digestbytes)
}

module.exports = ripemd160

}).call(this,require("buffer").Buffer)
},{"buffer":177}],19:[function(require,module,exports){
(function (Buffer){
// prototype class for hash functions
function Hash (blockSize, finalSize) {
  this._block = new Buffer(blockSize)
  this._finalSize = finalSize
  this._blockSize = blockSize
  this._len = 0
  this._s = 0
}

Hash.prototype.update = function (data, enc) {
  if (typeof data === 'string') {
    enc = enc || 'utf8'
    data = new Buffer(data, enc)
  }

  var l = this._len += data.length
  var s = this._s || 0
  var f = 0
  var buffer = this._block

  while (s < l) {
    var t = Math.min(data.length, f + this._blockSize - (s % this._blockSize))
    var ch = (t - f)

    for (var i = 0; i < ch; i++) {
      buffer[(s % this._blockSize) + i] = data[i + f]
    }

    s += ch
    f += ch

    if ((s % this._blockSize) === 0) {
      this._update(buffer)
    }
  }
  this._s = s

  return this
}

Hash.prototype.digest = function (enc) {
  // Suppose the length of the message M, in bits, is l
  var l = this._len * 8

  // Append the bit 1 to the end of the message
  this._block[this._len % this._blockSize] = 0x80

  // and then k zero bits, where k is the smallest non-negative solution to the equation (l + 1 + k) === finalSize mod blockSize
  this._block.fill(0, this._len % this._blockSize + 1)

  if (l % (this._blockSize * 8) >= this._finalSize * 8) {
    this._update(this._block)
    this._block.fill(0)
  }

  // to this append the block which is equal to the number l written in binary
  // TODO: handle case where l is > Math.pow(2, 29)
  this._block.writeInt32BE(l, this._blockSize - 4)

  var hash = this._update(this._block) || this._hash()

  return enc ? hash.toString(enc) : hash
}

Hash.prototype._update = function () {
  throw new Error('_update must be implemented by subclass')
}

module.exports = Hash

}).call(this,require("buffer").Buffer)
},{"buffer":177}],20:[function(require,module,exports){
var exports = module.exports = function SHA (algorithm) {
  algorithm = algorithm.toLowerCase()

  var Algorithm = exports[algorithm]
  if (!Algorithm) throw new Error(algorithm + ' is not supported (we accept pull requests)')

  return new Algorithm()
}

exports.sha = require('./sha')
exports.sha1 = require('./sha1')
exports.sha224 = require('./sha224')
exports.sha256 = require('./sha256')
exports.sha384 = require('./sha384')
exports.sha512 = require('./sha512')

},{"./sha":21,"./sha1":22,"./sha224":23,"./sha256":24,"./sha384":25,"./sha512":26}],21:[function(require,module,exports){
(function (Buffer){
/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
 * in FIPS PUB 180-1
 * This source code is derived from sha1.js of the same repository.
 * The difference between SHA-0 and SHA-1 is just a bitwise rotate left
 * operation was added.
 */

var inherits = require('inherits')
var Hash = require('./hash')

var W = new Array(80)

function Sha () {
  this.init()
  this._w = W

  Hash.call(this, 64, 56)
}

inherits(Sha, Hash)

Sha.prototype.init = function () {
  this._a = 0x67452301 | 0
  this._b = 0xefcdab89 | 0
  this._c = 0x98badcfe | 0
  this._d = 0x10325476 | 0
  this._e = 0xc3d2e1f0 | 0

  return this
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function rol (num, cnt) {
  return (num << cnt) | (num >>> (32 - cnt))
}

Sha.prototype._update = function (M) {
  var W = this._w

  var a = this._a
  var b = this._b
  var c = this._c
  var d = this._d
  var e = this._e

  var j = 0
  var k

  /*
   * SHA-1 has a bitwise rotate left operation. But, SHA is not
   * function calcW() { return rol(W[j - 3] ^ W[j -  8] ^ W[j - 14] ^ W[j - 16], 1) }
   */
  function calcW () { return W[j - 3] ^ W[j - 8] ^ W[j - 14] ^ W[j - 16] }
  function loop (w, f) {
    W[j] = w

    var t = rol(a, 5) + f + e + w + k

    e = d
    d = c
    c = rol(b, 30)
    b = a
    a = t
    j++
  }

  k = 1518500249
  while (j < 16) loop(M.readInt32BE(j * 4), (b & c) | ((~b) & d))
  while (j < 20) loop(calcW(), (b & c) | ((~b) & d))
  k = 1859775393
  while (j < 40) loop(calcW(), b ^ c ^ d)
  k = -1894007588
  while (j < 60) loop(calcW(), (b & c) | (b & d) | (c & d))
  k = -899497514
  while (j < 80) loop(calcW(), b ^ c ^ d)

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
}

Sha.prototype._hash = function () {
  var H = new Buffer(20)

  H.writeInt32BE(this._a | 0, 0)
  H.writeInt32BE(this._b | 0, 4)
  H.writeInt32BE(this._c | 0, 8)
  H.writeInt32BE(this._d | 0, 12)
  H.writeInt32BE(this._e | 0, 16)

  return H
}

module.exports = Sha


}).call(this,require("buffer").Buffer)
},{"./hash":19,"buffer":177,"inherits":52}],22:[function(require,module,exports){
(function (Buffer){
/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
 * in FIPS PUB 180-1
 * Version 2.1a Copyright Paul Johnston 2000 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for details.
 */

var inherits = require('inherits')
var Hash = require('./hash')

var W = new Array(80)

function Sha1 () {
  this.init()
  this._w = W

  Hash.call(this, 64, 56)
}

inherits(Sha1, Hash)

Sha1.prototype.init = function () {
  this._a = 0x67452301 | 0
  this._b = 0xefcdab89 | 0
  this._c = 0x98badcfe | 0
  this._d = 0x10325476 | 0
  this._e = 0xc3d2e1f0 | 0

  return this
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function rol (num, cnt) {
  return (num << cnt) | (num >>> (32 - cnt))
}

Sha1.prototype._update = function (M) {
  var W = this._w

  var a = this._a
  var b = this._b
  var c = this._c
  var d = this._d
  var e = this._e

  var j = 0
  var k

  function calcW () { return rol(W[j - 3] ^ W[j - 8] ^ W[j - 14] ^ W[j - 16], 1) }
  function loop (w, f) {
    W[j] = w

    var t = rol(a, 5) + f + e + w + k

    e = d
    d = c
    c = rol(b, 30)
    b = a
    a = t
    j++
  }

  k = 1518500249
  while (j < 16) loop(M.readInt32BE(j * 4), (b & c) | ((~b) & d))
  while (j < 20) loop(calcW(), (b & c) | ((~b) & d))
  k = 1859775393
  while (j < 40) loop(calcW(), b ^ c ^ d)
  k = -1894007588
  while (j < 60) loop(calcW(), (b & c) | (b & d) | (c & d))
  k = -899497514
  while (j < 80) loop(calcW(), b ^ c ^ d)

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
}

Sha1.prototype._hash = function () {
  var H = new Buffer(20)

  H.writeInt32BE(this._a | 0, 0)
  H.writeInt32BE(this._b | 0, 4)
  H.writeInt32BE(this._c | 0, 8)
  H.writeInt32BE(this._d | 0, 12)
  H.writeInt32BE(this._e | 0, 16)

  return H
}

module.exports = Sha1

}).call(this,require("buffer").Buffer)
},{"./hash":19,"buffer":177,"inherits":52}],23:[function(require,module,exports){
(function (Buffer){
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */

var inherits = require('inherits')
var Sha256 = require('./sha256')
var Hash = require('./hash')

var W = new Array(64)

function Sha224 () {
  this.init()

  this._w = W // new Array(64)

  Hash.call(this, 64, 56)
}

inherits(Sha224, Sha256)

Sha224.prototype.init = function () {
  this._a = 0xc1059ed8 | 0
  this._b = 0x367cd507 | 0
  this._c = 0x3070dd17 | 0
  this._d = 0xf70e5939 | 0
  this._e = 0xffc00b31 | 0
  this._f = 0x68581511 | 0
  this._g = 0x64f98fa7 | 0
  this._h = 0xbefa4fa4 | 0

  return this
}

Sha224.prototype._hash = function () {
  var H = new Buffer(28)

  H.writeInt32BE(this._a, 0)
  H.writeInt32BE(this._b, 4)
  H.writeInt32BE(this._c, 8)
  H.writeInt32BE(this._d, 12)
  H.writeInt32BE(this._e, 16)
  H.writeInt32BE(this._f, 20)
  H.writeInt32BE(this._g, 24)

  return H
}

module.exports = Sha224

}).call(this,require("buffer").Buffer)
},{"./hash":19,"./sha256":24,"buffer":177,"inherits":52}],24:[function(require,module,exports){
(function (Buffer){
/**
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
 * in FIPS 180-2
 * Version 2.2-beta Copyright Angel Marin, Paul Johnston 2000 - 2009.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 *
 */

var inherits = require('inherits')
var Hash = require('./hash')

var K = [
  0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
  0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
  0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
  0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
  0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
  0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
  0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
  0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
  0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
  0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
  0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
  0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
  0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
  0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
  0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
  0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2
]

var W = new Array(64)

function Sha256 () {
  this.init()

  this._w = W // new Array(64)

  Hash.call(this, 64, 56)
}

inherits(Sha256, Hash)

Sha256.prototype.init = function () {
  this._a = 0x6a09e667 | 0
  this._b = 0xbb67ae85 | 0
  this._c = 0x3c6ef372 | 0
  this._d = 0xa54ff53a | 0
  this._e = 0x510e527f | 0
  this._f = 0x9b05688c | 0
  this._g = 0x1f83d9ab | 0
  this._h = 0x5be0cd19 | 0

  return this
}

function Ch (x, y, z) {
  return z ^ (x & (y ^ z))
}

function Maj (x, y, z) {
  return (x & y) | (z & (x | y))
}

function Sigma0 (x) {
  return (x >>> 2 | x << 30) ^ (x >>> 13 | x << 19) ^ (x >>> 22 | x << 10)
}

function Sigma1 (x) {
  return (x >>> 6 | x << 26) ^ (x >>> 11 | x << 21) ^ (x >>> 25 | x << 7)
}

function Gamma0 (x) {
  return (x >>> 7 | x << 25) ^ (x >>> 18 | x << 14) ^ (x >>> 3)
}

function Gamma1 (x) {
  return (x >>> 17 | x << 15) ^ (x >>> 19 | x << 13) ^ (x >>> 10)
}

Sha256.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0
  var f = this._f | 0
  var g = this._g | 0
  var h = this._h | 0

  var j = 0

  function calcW () { return Gamma1(W[j - 2]) + W[j - 7] + Gamma0(W[j - 15]) + W[j - 16] }
  function loop (w) {
    W[j] = w

    var T1 = h + Sigma1(e) + Ch(e, f, g) + K[j] + w
    var T2 = Sigma0(a) + Maj(a, b, c)

    h = g
    g = f
    f = e
    e = d + T1
    d = c
    c = b
    b = a
    a = T1 + T2

    j++
  }

  while (j < 16) loop(M.readInt32BE(j * 4))
  while (j < 64) loop(calcW())

  this._a = (a + this._a) | 0
  this._b = (b + this._b) | 0
  this._c = (c + this._c) | 0
  this._d = (d + this._d) | 0
  this._e = (e + this._e) | 0
  this._f = (f + this._f) | 0
  this._g = (g + this._g) | 0
  this._h = (h + this._h) | 0
}

Sha256.prototype._hash = function () {
  var H = new Buffer(32)

  H.writeInt32BE(this._a, 0)
  H.writeInt32BE(this._b, 4)
  H.writeInt32BE(this._c, 8)
  H.writeInt32BE(this._d, 12)
  H.writeInt32BE(this._e, 16)
  H.writeInt32BE(this._f, 20)
  H.writeInt32BE(this._g, 24)
  H.writeInt32BE(this._h, 28)

  return H
}

module.exports = Sha256

}).call(this,require("buffer").Buffer)
},{"./hash":19,"buffer":177,"inherits":52}],25:[function(require,module,exports){
(function (Buffer){
var inherits = require('inherits')
var SHA512 = require('./sha512')
var Hash = require('./hash')

var W = new Array(160)

function Sha384 () {
  this.init()
  this._w = W

  Hash.call(this, 128, 112)
}

inherits(Sha384, SHA512)

Sha384.prototype.init = function () {
  this._a = 0xcbbb9d5d | 0
  this._b = 0x629a292a | 0
  this._c = 0x9159015a | 0
  this._d = 0x152fecd8 | 0
  this._e = 0x67332667 | 0
  this._f = 0x8eb44a87 | 0
  this._g = 0xdb0c2e0d | 0
  this._h = 0x47b5481d | 0

  this._al = 0xc1059ed8 | 0
  this._bl = 0x367cd507 | 0
  this._cl = 0x3070dd17 | 0
  this._dl = 0xf70e5939 | 0
  this._el = 0xffc00b31 | 0
  this._fl = 0x68581511 | 0
  this._gl = 0x64f98fa7 | 0
  this._hl = 0xbefa4fa4 | 0

  return this
}

Sha384.prototype._hash = function () {
  var H = new Buffer(48)

  function writeInt64BE (h, l, offset) {
    H.writeInt32BE(h, offset)
    H.writeInt32BE(l, offset + 4)
  }

  writeInt64BE(this._a, this._al, 0)
  writeInt64BE(this._b, this._bl, 8)
  writeInt64BE(this._c, this._cl, 16)
  writeInt64BE(this._d, this._dl, 24)
  writeInt64BE(this._e, this._el, 32)
  writeInt64BE(this._f, this._fl, 40)

  return H
}

module.exports = Sha384

}).call(this,require("buffer").Buffer)
},{"./hash":19,"./sha512":26,"buffer":177,"inherits":52}],26:[function(require,module,exports){
(function (Buffer){
var inherits = require('inherits')
var Hash = require('./hash')

var K = [
  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
]

var W = new Array(160)

function Sha512 () {
  this.init()
  this._w = W

  Hash.call(this, 128, 112)
}

inherits(Sha512, Hash)

Sha512.prototype.init = function () {
  this._a = 0x6a09e667 | 0
  this._b = 0xbb67ae85 | 0
  this._c = 0x3c6ef372 | 0
  this._d = 0xa54ff53a | 0
  this._e = 0x510e527f | 0
  this._f = 0x9b05688c | 0
  this._g = 0x1f83d9ab | 0
  this._h = 0x5be0cd19 | 0

  this._al = 0xf3bcc908 | 0
  this._bl = 0x84caa73b | 0
  this._cl = 0xfe94f82b | 0
  this._dl = 0x5f1d36f1 | 0
  this._el = 0xade682d1 | 0
  this._fl = 0x2b3e6c1f | 0
  this._gl = 0xfb41bd6b | 0
  this._hl = 0x137e2179 | 0

  return this
}

function Ch (x, y, z) {
  return z ^ (x & (y ^ z))
}

function Maj (x, y, z) {
  return (x & y) | (z & (x | y))
}

function Sigma0 (x, xl) {
  return (x >>> 28 | xl << 4) ^ (xl >>> 2 | x << 30) ^ (xl >>> 7 | x << 25)
}

function Sigma1 (x, xl) {
  return (x >>> 14 | xl << 18) ^ (x >>> 18 | xl << 14) ^ (xl >>> 9 | x << 23)
}

function Gamma0 (x, xl) {
  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7)
}

function Gamma0l (x, xl) {
  return (x >>> 1 | xl << 31) ^ (x >>> 8 | xl << 24) ^ (x >>> 7 | xl << 25)
}

function Gamma1 (x, xl) {
  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6)
}

function Gamma1l (x, xl) {
  return (x >>> 19 | xl << 13) ^ (xl >>> 29 | x << 3) ^ (x >>> 6 | xl << 26)
}

Sha512.prototype._update = function (M) {
  var W = this._w

  var a = this._a | 0
  var b = this._b | 0
  var c = this._c | 0
  var d = this._d | 0
  var e = this._e | 0
  var f = this._f | 0
  var g = this._g | 0
  var h = this._h | 0

  var al = this._al | 0
  var bl = this._bl | 0
  var cl = this._cl | 0
  var dl = this._dl | 0
  var el = this._el | 0
  var fl = this._fl | 0
  var gl = this._gl | 0
  var hl = this._hl | 0

  var i = 0
  var j = 0
  var Wi, Wil
  function calcW () {
    var x = W[j - 15 * 2]
    var xl = W[j - 15 * 2 + 1]
    var gamma0 = Gamma0(x, xl)
    var gamma0l = Gamma0l(xl, x)

    x = W[j - 2 * 2]
    xl = W[j - 2 * 2 + 1]
    var gamma1 = Gamma1(x, xl)
    var gamma1l = Gamma1l(xl, x)

    // W[i] = gamma0 + W[i - 7] + gamma1 + W[i - 16]
    var Wi7 = W[j - 7 * 2]
    var Wi7l = W[j - 7 * 2 + 1]

    var Wi16 = W[j - 16 * 2]
    var Wi16l = W[j - 16 * 2 + 1]

    Wil = gamma0l + Wi7l
    Wi = gamma0 + Wi7 + ((Wil >>> 0) < (gamma0l >>> 0) ? 1 : 0)
    Wil = Wil + gamma1l
    Wi = Wi + gamma1 + ((Wil >>> 0) < (gamma1l >>> 0) ? 1 : 0)
    Wil = Wil + Wi16l
    Wi = Wi + Wi16 + ((Wil >>> 0) < (Wi16l >>> 0) ? 1 : 0)
  }

  function loop () {
    W[j] = Wi
    W[j + 1] = Wil

    var maj = Maj(a, b, c)
    var majl = Maj(al, bl, cl)

    var sigma0h = Sigma0(a, al)
    var sigma0l = Sigma0(al, a)
    var sigma1h = Sigma1(e, el)
    var sigma1l = Sigma1(el, e)

    // t1 = h + sigma1 + ch + K[i] + W[i]
    var Ki = K[j]
    var Kil = K[j + 1]

    var ch = Ch(e, f, g)
    var chl = Ch(el, fl, gl)

    var t1l = hl + sigma1l
    var t1 = h + sigma1h + ((t1l >>> 0) < (hl >>> 0) ? 1 : 0)
    t1l = t1l + chl
    t1 = t1 + ch + ((t1l >>> 0) < (chl >>> 0) ? 1 : 0)
    t1l = t1l + Kil
    t1 = t1 + Ki + ((t1l >>> 0) < (Kil >>> 0) ? 1 : 0)
    t1l = t1l + Wil
    t1 = t1 + Wi + ((t1l >>> 0) < (Wil >>> 0) ? 1 : 0)

    // t2 = sigma0 + maj
    var t2l = sigma0l + majl
    var t2 = sigma0h + maj + ((t2l >>> 0) < (sigma0l >>> 0) ? 1 : 0)

    h = g
    hl = gl
    g = f
    gl = fl
    f = e
    fl = el
    el = (dl + t1l) | 0
    e = (d + t1 + ((el >>> 0) < (dl >>> 0) ? 1 : 0)) | 0
    d = c
    dl = cl
    c = b
    cl = bl
    b = a
    bl = al
    al = (t1l + t2l) | 0
    a = (t1 + t2 + ((al >>> 0) < (t1l >>> 0) ? 1 : 0)) | 0

    i++
    j += 2
  }

  while (i < 16) {
    Wi = M.readInt32BE(j * 4)
    Wil = M.readInt32BE(j * 4 + 4)

    loop()
  }

  while (i < 80) {
    calcW()
    loop()
  }

  this._al = (this._al + al) | 0
  this._bl = (this._bl + bl) | 0
  this._cl = (this._cl + cl) | 0
  this._dl = (this._dl + dl) | 0
  this._el = (this._el + el) | 0
  this._fl = (this._fl + fl) | 0
  this._gl = (this._gl + gl) | 0
  this._hl = (this._hl + hl) | 0

  this._a = (this._a + a + ((this._al >>> 0) < (al >>> 0) ? 1 : 0)) | 0
  this._b = (this._b + b + ((this._bl >>> 0) < (bl >>> 0) ? 1 : 0)) | 0
  this._c = (this._c + c + ((this._cl >>> 0) < (cl >>> 0) ? 1 : 0)) | 0
  this._d = (this._d + d + ((this._dl >>> 0) < (dl >>> 0) ? 1 : 0)) | 0
  this._e = (this._e + e + ((this._el >>> 0) < (el >>> 0) ? 1 : 0)) | 0
  this._f = (this._f + f + ((this._fl >>> 0) < (fl >>> 0) ? 1 : 0)) | 0
  this._g = (this._g + g + ((this._gl >>> 0) < (gl >>> 0) ? 1 : 0)) | 0
  this._h = (this._h + h + ((this._hl >>> 0) < (hl >>> 0) ? 1 : 0)) | 0
}

Sha512.prototype._hash = function () {
  var H = new Buffer(64)

  function writeInt64BE (h, l, offset) {
    H.writeInt32BE(h, offset)
    H.writeInt32BE(l, offset + 4)
  }

  writeInt64BE(this._a, this._al, 0)
  writeInt64BE(this._b, this._bl, 8)
  writeInt64BE(this._c, this._cl, 16)
  writeInt64BE(this._d, this._dl, 24)
  writeInt64BE(this._e, this._el, 32)
  writeInt64BE(this._f, this._fl, 40)
  writeInt64BE(this._g, this._gl, 48)
  writeInt64BE(this._h, this._hl, 56)

  return H
}

module.exports = Sha512

}).call(this,require("buffer").Buffer)
},{"./hash":19,"buffer":177,"inherits":52}],27:[function(require,module,exports){
(function (Buffer){
'use strict';
var createHash = require('create-hash/browser');
var inherits = require('inherits')

var Transform = require('stream').Transform

var ZEROS = new Buffer(128)
ZEROS.fill(0)

function Hmac(alg, key) {
  Transform.call(this)
  alg = alg.toLowerCase()
  if (typeof key === 'string') {
    key = new Buffer(key)
  }

  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64

  this._alg = alg
  this._key = key

  if (key.length > blocksize) {
    key = createHash(alg).update(key).digest()

  } else if (key.length < blocksize) {
    key = Buffer.concat([key, ZEROS], blocksize)
  }

  var ipad = this._ipad = new Buffer(blocksize)
  var opad = this._opad = new Buffer(blocksize)

  for (var i = 0; i < blocksize; i++) {
    ipad[i] = key[i] ^ 0x36
    opad[i] = key[i] ^ 0x5C
  }

  this._hash = createHash(alg).update(ipad)
}

inherits(Hmac, Transform)

Hmac.prototype.update = function (data, enc) {
  this._hash.update(data, enc)

  return this
}

Hmac.prototype._transform = function (data, _, next) {
  this._hash.update(data)

  next()
}

Hmac.prototype._flush = function (next) {
  this.push(this.digest())

  next()
}

Hmac.prototype.digest = function (enc) {
  var h = this._hash.digest()

  return createHash(this._alg).update(this._opad).update(h).digest(enc)
}

module.exports = function createHmac(alg, key) {
  return new Hmac(alg, key)
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"create-hash/browser":14,"inherits":52,"stream":399}],28:[function(require,module,exports){
var assert = require('assert')
var BigInteger = require('bigi')

var Point = require('./point')

function Curve(p, a, b, Gx, Gy, n, h) {
  this.p = p
  this.a = a
  this.b = b
  this.G = Point.fromAffine(this, Gx, Gy)
  this.n = n
  this.h = h

  this.infinity = new Point(this, null, null, BigInteger.ZERO)

  // result caching
  this.pOverFour = p.add(BigInteger.ONE).shiftRight(2)
}

Curve.prototype.pointFromX = function(isOdd, x) {
  var alpha = x.pow(3).add(this.a.multiply(x)).add(this.b).mod(this.p)
  var beta = alpha.modPow(this.pOverFour, this.p) // XXX: not compatible with all curves

  var y = beta
  if (beta.isEven() ^ !isOdd) {
    y = this.p.subtract(y) // -y % p
  }

  return Point.fromAffine(this, x, y)
}

Curve.prototype.isInfinity = function(Q) {
  if (Q === this.infinity) return true

  return Q.z.signum() === 0 && Q.y.signum() !== 0
}

Curve.prototype.isOnCurve = function(Q) {
  if (this.isInfinity(Q)) return true

  var x = Q.affineX
  var y = Q.affineY
  var a = this.a
  var b = this.b
  var p = this.p

  // Check that xQ and yQ are integers in the interval [0, p - 1]
  if (x.signum() < 0 || x.compareTo(p) >= 0) return false
  if (y.signum() < 0 || y.compareTo(p) >= 0) return false

  // and check that y^2 = x^3 + ax + b (mod p)
  var lhs = y.square().mod(p)
  var rhs = x.pow(3).add(a.multiply(x)).add(b).mod(p)
  return lhs.equals(rhs)
}

/**
 * Validate an elliptic curve point.
 *
 * See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive
 */
Curve.prototype.validate = function(Q) {
  // Check Q != O
  assert(!this.isInfinity(Q), 'Point is at infinity')
  assert(this.isOnCurve(Q), 'Point is not on the curve')

  // Check nQ = O (where Q is a scalar multiple of G)
  var nQ = Q.multiply(this.n)
  assert(this.isInfinity(nQ), 'Point is not a scalar multiple of G')

  return true
}

module.exports = Curve

},{"./point":32,"assert":162,"bigi":7}],29:[function(require,module,exports){
module.exports={
  "secp128r1": {
    "p": "fffffffdffffffffffffffffffffffff",
    "a": "fffffffdfffffffffffffffffffffffc",
    "b": "e87579c11079f43dd824993c2cee5ed3",
    "n": "fffffffe0000000075a30d1b9038a115",
    "h": "01",
    "Gx": "161ff7528b899b2d0c28607ca52c5b86",
    "Gy": "cf5ac8395bafeb13c02da292dded7a83"
  },
  "secp160k1": {
    "p": "fffffffffffffffffffffffffffffffeffffac73",
    "a": "00",
    "b": "07",
    "n": "0100000000000000000001b8fa16dfab9aca16b6b3",
    "h": "01",
    "Gx": "3b4c382ce37aa192a4019e763036f4f5dd4d7ebb",
    "Gy": "938cf935318fdced6bc28286531733c3f03c4fee"
  },
  "secp160r1": {
    "p": "ffffffffffffffffffffffffffffffff7fffffff",
    "a": "ffffffffffffffffffffffffffffffff7ffffffc",
    "b": "1c97befc54bd7a8b65acf89f81d4d4adc565fa45",
    "n": "0100000000000000000001f4c8f927aed3ca752257",
    "h": "01",
    "Gx": "4a96b5688ef573284664698968c38bb913cbfc82",
    "Gy": "23a628553168947d59dcc912042351377ac5fb32"
  },
  "secp192k1": {
    "p": "fffffffffffffffffffffffffffffffffffffffeffffee37",
    "a": "00",
    "b": "03",
    "n": "fffffffffffffffffffffffe26f2fc170f69466a74defd8d",
    "h": "01",
    "Gx": "db4ff10ec057e9ae26b07d0280b7f4341da5d1b1eae06c7d",
    "Gy": "9b2f2f6d9c5628a7844163d015be86344082aa88d95e2f9d"
  },
  "secp192r1": {
    "p": "fffffffffffffffffffffffffffffffeffffffffffffffff",
    "a": "fffffffffffffffffffffffffffffffefffffffffffffffc",
    "b": "64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1",
    "n": "ffffffffffffffffffffffff99def836146bc9b1b4d22831",
    "h": "01",
    "Gx": "188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012",
    "Gy": "07192b95ffc8da78631011ed6b24cdd573f977a11e794811"
  },
  "secp256k1": {
    "p": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f",
    "a": "00",
    "b": "07",
    "n": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141",
    "h": "01",
    "Gx": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
    "Gy": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
  },
  "secp256r1": {
    "p": "ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
    "a": "ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
    "b": "5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
    "n": "ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
    "h": "01",
    "Gx": "6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
    "Gy": "4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5"
  }
}

},{}],30:[function(require,module,exports){
var Point = require('./point')
var Curve = require('./curve')

var getCurveByName = require('./names')

module.exports = {
  Curve: Curve,
  Point: Point,
  getCurveByName: getCurveByName
}

},{"./curve":28,"./names":31,"./point":32}],31:[function(require,module,exports){
var BigInteger = require('bigi')

var curves = require('./curves')
var Curve = require('./curve')

function getCurveByName(name) {
  var curve = curves[name]
  if (!curve) return null

  var p = new BigInteger(curve.p, 16)
  var a = new BigInteger(curve.a, 16)
  var b = new BigInteger(curve.b, 16)
  var n = new BigInteger(curve.n, 16)
  var h = new BigInteger(curve.h, 16)
  var Gx = new BigInteger(curve.Gx, 16)
  var Gy = new BigInteger(curve.Gy, 16)

  return new Curve(p, a, b, Gx, Gy, n, h)
}

module.exports = getCurveByName

},{"./curve":28,"./curves":29,"bigi":7}],32:[function(require,module,exports){
(function (Buffer){
var assert = require('assert')
var BigInteger = require('bigi')

var THREE = BigInteger.valueOf(3)

function Point(curve, x, y, z) {
  assert.notStrictEqual(z, undefined, 'Missing Z coordinate')

  this.curve = curve
  this.x = x
  this.y = y
  this.z = z
  this._zInv = null

  this.compressed = true
}

Object.defineProperty(Point.prototype, 'zInv', {
  get: function() {
    if (this._zInv === null) {
      this._zInv = this.z.modInverse(this.curve.p)
    }

    return this._zInv
  }
})

Object.defineProperty(Point.prototype, 'affineX', {
  get: function() {
    return this.x.multiply(this.zInv).mod(this.curve.p)
  }
})

Object.defineProperty(Point.prototype, 'affineY', {
  get: function() {
    return this.y.multiply(this.zInv).mod(this.curve.p)
  }
})

Point.fromAffine = function(curve, x, y) {
  return new Point(curve, x, y, BigInteger.ONE)
}

Point.prototype.equals = function(other) {
  if (other === this) return true
  if (this.curve.isInfinity(this)) return this.curve.isInfinity(other)
  if (this.curve.isInfinity(other)) return this.curve.isInfinity(this)

  // u = Y2 * Z1 - Y1 * Z2
  var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p)

  if (u.signum() !== 0) return false

  // v = X2 * Z1 - X1 * Z2
  var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p)

  return v.signum() === 0
}

Point.prototype.negate = function() {
  var y = this.curve.p.subtract(this.y)

  return new Point(this.curve, this.x, y, this.z)
}

Point.prototype.add = function(b) {
  if (this.curve.isInfinity(this)) return b
  if (this.curve.isInfinity(b)) return this

  var x1 = this.x
  var y1 = this.y
  var x2 = b.x
  var y2 = b.y

  // u = Y2 * Z1 - Y1 * Z2
  var u = y2.multiply(this.z).subtract(y1.multiply(b.z)).mod(this.curve.p)
  // v = X2 * Z1 - X1 * Z2
  var v = x2.multiply(this.z).subtract(x1.multiply(b.z)).mod(this.curve.p)

  if (v.signum() === 0) {
    if (u.signum() === 0) {
      return this.twice() // this == b, so double
    }

    return this.curve.infinity // this = -b, so infinity
  }

  var v2 = v.square()
  var v3 = v2.multiply(v)
  var x1v2 = x1.multiply(v2)
  var zu2 = u.square().multiply(this.z)

  // x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3)
  var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.p)
  // y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3
  var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(b.z).add(u.multiply(v3)).mod(this.curve.p)
  // z3 = v^3 * z1 * z2
  var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.p)

  return new Point(this.curve, x3, y3, z3)
}

Point.prototype.twice = function() {
  if (this.curve.isInfinity(this)) return this
  if (this.y.signum() === 0) return this.curve.infinity

  var x1 = this.x
  var y1 = this.y

  var y1z1 = y1.multiply(this.z)
  var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p)
  var a = this.curve.a

  // w = 3 * x1^2 + a * z1^2
  var w = x1.square().multiply(THREE)

  if (a.signum() !== 0) {
    w = w.add(this.z.square().multiply(a))
  }

  w = w.mod(this.curve.p)
  // x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1)
  var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(this.curve.p)
  // y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3
  var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(y1sqz1).subtract(w.pow(3)).mod(this.curve.p)
  // z3 = 8 * (y1 * z1)^3
  var z3 = y1z1.pow(3).shiftLeft(3).mod(this.curve.p)

  return new Point(this.curve, x3, y3, z3)
}

// Simple NAF (Non-Adjacent Form) multiplication algorithm
// TODO: modularize the multiplication algorithm
Point.prototype.multiply = function(k) {
  if (this.curve.isInfinity(this)) return this
  if (k.signum() === 0) return this.curve.infinity

  var e = k
  var h = e.multiply(THREE)

  var neg = this.negate()
  var R = this

  for (var i = h.bitLength() - 2; i > 0; --i) {
    var hBit = h.testBit(i)
    var eBit = e.testBit(i)

    R = R.twice()

    if (hBit !== eBit) {
      R = R.add(hBit ? this : neg)
    }
  }

  return R
}

// Compute this*j + x*k (simultaneous multiplication)
Point.prototype.multiplyTwo = function(j, x, k) {
  var i = Math.max(j.bitLength(), k.bitLength()) - 1
  var R = this.curve.infinity
  var both = this.add(x)

  while (i >= 0) {
    var jBit = j.testBit(i)
    var kBit = k.testBit(i)

    R = R.twice()

    if (jBit) {
      if (kBit) {
        R = R.add(both)

      } else {
        R = R.add(this)
      }

    } else if (kBit) {
      R = R.add(x)
    }
    --i
  }

  return R
}

Point.prototype.getEncoded = function(compressed) {
  if (compressed == undefined) compressed = this.compressed
  if (this.curve.isInfinity(this)) return new Buffer('00', 'hex') // Infinity point encoded is simply '00'

  var x = this.affineX
  var y = this.affineY

  var buffer

  // Determine size of q in bytes
  var byteLength = Math.floor((this.curve.p.bitLength() + 7) / 8)

  // 0x02/0x03 | X
  if (compressed) {
    buffer = new Buffer(1 + byteLength)
    buffer.writeUInt8(y.isEven() ? 0x02 : 0x03, 0)

  // 0x04 | X | Y
  } else {
    buffer = new Buffer(1 + byteLength + byteLength)
    buffer.writeUInt8(0x04, 0)

    y.toBuffer(byteLength).copy(buffer, 1 + byteLength)
  }

  x.toBuffer(byteLength).copy(buffer, 1)

  return buffer
}

Point.decodeFrom = function(curve, buffer) {
  var type = buffer.readUInt8(0)
  var compressed = (type !== 4)

  var byteLength = Math.floor((curve.p.bitLength() + 7) / 8)
  var x = BigInteger.fromBuffer(buffer.slice(1, 1 + byteLength))

  var Q
  if (compressed) {
    assert.equal(buffer.length, byteLength + 1, 'Invalid sequence length')
    assert(type === 0x02 || type === 0x03, 'Invalid sequence tag')

    var isOdd = (type === 0x03)
    Q = curve.pointFromX(isOdd, x)

  } else {
    assert.equal(buffer.length, 1 + byteLength + byteLength, 'Invalid sequence length')

    var y = BigInteger.fromBuffer(buffer.slice(1 + byteLength))
    Q = Point.fromAffine(curve, x, y)
  }

  Q.compressed = compressed
  return Q
}

Point.prototype.toString = function () {
  if (this.curve.isInfinity(this)) return '(INFINITY)'

  return '(' + this.affineX.toString() + ',' + this.affineY.toString() + ')'
}

module.exports = Point

}).call(this,require("buffer").Buffer)
},{"assert":162,"bigi":7,"buffer":177}],33:[function(require,module,exports){
(function (process,global,Buffer){
'use strict';

var crypto = global.crypto || global.msCrypto
if(crypto && crypto.getRandomValues) {
  module.exports = randomBytes;
} else {
  module.exports = oldBrowser;
}
function randomBytes(size, cb) {
  var bytes = new Buffer(size); //in browserify, this is an extended Uint8Array
    /* This will not work in older browsers.
     * See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
     */

  crypto.getRandomValues(bytes);
  if (typeof cb === 'function') {
    return process.nextTick(function () {
      cb(null, bytes);
    });
  }
  return bytes;
}
function oldBrowser() {
  throw new Error(
      'secure random number generation not supported by this browser\n'+
      'use chrome, FireFox or Internet Explorer 11'
    )
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"_process":381,"buffer":177}],34:[function(require,module,exports){
(function (Buffer){
var inherits = require('inherits')

function TfTypeError (type, value) {
  this.tfError = Error.call(this)
  this.tfType = type
  this.tfValue = value

  var message
  Object.defineProperty(this, 'message', {
    get: function () {
      if (message) return message
      message = tfErrorString(type, value)

      return message
    }
  })
}

inherits(TfTypeError, Error)
Object.defineProperty(TfTypeError, 'stack', { get: function () { return this.tfError.stack } })

function TfPropertyTypeError (type, property, value, error) {
  this.tfError = error || Error.call(this)
  this.tfProperty = property
  this.tfType = type
  this.tfValue = value

  var message
  Object.defineProperty(this, 'message', {
    get: function () {
      if (message) return message
      if (type) {
        message = tfPropertyErrorString(type, property, value)
      } else {
        message = 'Unexpected property "' + property + '"'
      }

      return message
    }
  })
}

inherits(TfPropertyTypeError, Error)
Object.defineProperty(TfPropertyTypeError, 'stack', { get: function () { return this.tfError.stack } })

TfPropertyTypeError.prototype.asChildOf = function (property) {
  return new TfPropertyTypeError(this.tfType, property + '.' + this.tfProperty, this.tfValue, this.tfError)
}

function getFunctionName (fn) {
  return fn.name || fn.toString().match(/function (.*?)\s*\(/)[1]
}

function getValueTypeName (value) {
  if (nativeTypes.Null(value)) return ''

  return getFunctionName(value.constructor)
}

function getValue (value) {
  if (nativeTypes.Function(value)) return ''
  if (nativeTypes.String(value)) return JSON.stringify(value)
  if (value && nativeTypes.Object(value)) return ''

  return value
}

function tfJSON (type) {
  if (nativeTypes.Function(type)) return type.toJSON ? type.toJSON() : getFunctionName(type)
  if (nativeTypes.Array(type)) return 'Array'
  if (type && nativeTypes.Object(type)) return 'Object'

  return type || ''
}

function stfJSON (type) {
  type = tfJSON(type)

  return nativeTypes.Object(type) ? JSON.stringify(type) : type
}

function tfErrorString (type, value) {
  var valueTypeName = getValueTypeName(value)
  var valueValue = getValue(value)

  return 'Expected ' + stfJSON(type) + ', got' + (valueTypeName !== '' ? ' ' + valueTypeName : '') + (valueValue !== '' ? ' ' + valueValue : '')
}

function tfPropertyErrorString (type, name, value) {
  return tfErrorString('property \"' + stfJSON(name) + '\" of type ' + stfJSON(type), value)
}

var nativeTypes = {
  Array: function (value) { return value !== null && value !== undefined && value.constructor === Array },
  Boolean: function (value) { return typeof value === 'boolean' },
  Buffer: function (value) { return Buffer.isBuffer(value) },
  Function: function (value) { return typeof value === 'function' },
  Null: function (value) { return value === undefined || value === null },
  Number: function (value) { return typeof value === 'number' },
  Object: function (value) { return typeof value === 'object' },
  String: function (value) { return typeof value === 'string' },
  '': function () { return true }
}

var otherTypes = {
  arrayOf: function arrayOf (type) {
    function arrayOf (value, strict) {
      if (!nativeTypes.Array(value)) return false

      return value.every(function (x) {
        return typeforce(type, x, strict, arrayOf)
      })
    }
    arrayOf.toJSON = function () { return [tfJSON(type)] }

    return arrayOf
  },

  maybe: function maybe (type) {
    function maybe (value, strict) {
      return nativeTypes.Null(value) || typeforce(type, value, strict, maybe)
    }
    maybe.toJSON = function () { return '?' + stfJSON(type) }

    return maybe
  },

  object: function object (type) {
    function object (value, strict) {
      if (!nativeTypes.Object(value)) return false
      if (nativeTypes.Null(value)) return false

      var propertyName

      try {
        for (propertyName in type) {
          var propertyType = type[propertyName]
          var propertyValue = value[propertyName]

          typeforce(propertyType, propertyValue, strict)
        }
      } catch (e) {
        if (e instanceof TfPropertyTypeError) {
          throw e.asChildOf(propertyName)
        } else if (e instanceof TfTypeError) {
          throw new TfPropertyTypeError(e.tfType, propertyName, e.tfValue, e.tfError)
        }

        throw e
      }

      if (strict) {
        for (propertyName in value) {
          if (type[propertyName]) continue

          throw new TfPropertyTypeError(undefined, propertyName)
        }
      }

      return true
    }
    object.toJSON = function () { return tfJSON(type) }

    return object
  },

  map: function map (propertyType, propertyKeyType) {
    function map (value, strict) {
      typeforce(nativeTypes.Object, value, strict)
      if (nativeTypes.Null(value)) return false

      var propertyName

      try {
        for (propertyName in value) {
          if (propertyKeyType) {
            typeforce(propertyKeyType, propertyName, strict)
          }

          var propertyValue = value[propertyName]
          typeforce(propertyType, propertyValue, strict)
        }
      } catch (e) {
        if (e instanceof TfPropertyTypeError) {
          throw e.asChildOf(propertyName)
        } else if (e instanceof TfTypeError) {
          throw new TfPropertyTypeError(e.tfType, propertyKeyType || propertyName, e.tfValue)
        }

        throw e
      }

      return true
    }

    if (propertyKeyType) {
      map.toJSON = function () { return '{' + stfJSON(propertyKeyType) + ': ' + stfJSON(propertyType) + '}' }
    } else {
      map.toJSON = function () { return '{' + stfJSON(propertyType) + '}' }
    }

    return map
  },

  oneOf: function oneOf () {
    var types = [].slice.call(arguments)

    function oneOf (value, strict) {
      return types.some(function (type) {
        try {
          return typeforce(type, value, strict)
        } catch (e) {
          if (e instanceof TfTypeError || e instanceof TfPropertyTypeError) return false

          throw e
        }
      })
    }
    oneOf.toJSON = function () { return types.map(stfJSON).join('|') }

    return oneOf
  },

  quacksLike: function quacksLike (type) {
    function quacksLike (value, strict) {
      return type === getValueTypeName(value)
    }
    quacksLike.toJSON = function () { return type }

    return quacksLike
  },

  tuple: function tuple () {
    var types = [].slice.call(arguments)

    function tuple (value, strict) {
      return types.every(function (type, i) {
        return typeforce(type, value[i], strict)
      })
    }
    tuple.toJSON = function () { return '(' + types.map(stfJSON).join(', ') + ')' }

    return tuple
  },

  value: function value (expected) {
    function value (actual) {
      return actual === expected
    }
    value.toJSON = function () { return expected }

    return value
  }
}

function compile (type) {
  if (nativeTypes.String(type)) {
    if (type[0] === '?') return otherTypes.maybe(compile(type.slice(1)))

    return nativeTypes[type] || otherTypes.quacksLike(type)
  } else if (type && nativeTypes.Object(type)) {
    if (nativeTypes.Array(type)) return otherTypes.arrayOf(compile(type[0]))

    var compiled = {}

    for (var propertyName in type) {
      compiled[propertyName] = compile(type[propertyName])
    }

    return otherTypes.object(compiled)
  } else if (nativeTypes.Function(type)) {
    return type
  }

  return otherTypes.value(type)
}

function typeforce (type, value, strict, surrogate) {
  if (nativeTypes.Function(type)) {
    if (type(value, strict)) return true

    throw new TfTypeError(surrogate || type, value)
  }

  // JIT
  return typeforce(compile(type), value, strict)
}

// assign all types to typeforce function
var typeName
Object.keys(nativeTypes).forEach(function (typeName) {
  var nativeType = nativeTypes[typeName]
  nativeType.toJSON = function () { return typeName }

  typeforce[typeName] = nativeType
})

for (typeName in otherTypes) {
  typeforce[typeName] = otherTypes[typeName]
}

module.exports = typeforce
module.exports.compile = compile

// export Error objects
module.exports.TfTypeError = TfTypeError
module.exports.TfPropertyTypeError = TfPropertyTypeError

}).call(this,{"isBuffer":require("../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":378,"inherits":52}],35:[function(require,module,exports){
(function (Buffer){
var bs58check = require('bs58check')

function decodeRaw (version, buffer) {
  if (buffer[0] !== version) throw new Error('Invalid network version')

  // compression flag?
  if (buffer.length === 34) {
    if (buffer[33] !== 0x01) throw new Error('Invalid compression flag')

    // truncate the version byte/compression flag
    return {
      version: buffer[0],
      d: buffer.slice(1, -1),
      compressed: true
    }
  }

  // no compression flag
  if (buffer.length !== 33) throw new Error('Invalid WIF length')

  return {
    version: buffer[0],
    d: buffer.slice(1),
    compressed: false
  }
}

function decode (version, string) {
  return decodeRaw(version, bs58check.decode(string))
}

function encodeRaw (version, d, compressed) {
  var buffer = new Buffer(compressed ? 34 : 33)

  buffer.writeUInt8(version, 0)
  d.copy(buffer, 1)

  if (compressed) {
    buffer[33] = 0x01
  }

  return buffer
}

function encode (version, d, compressed) {
  return bs58check.encode(encodeRaw(version, d, compressed))
}

module.exports = {
  decode: decode,
  decodeRaw: decodeRaw,
  encode: encode,
  encodeRaw: encodeRaw
}

}).call(this,require("buffer").Buffer)
},{"bs58check":10,"buffer":177}],36:[function(require,module,exports){
(function (Buffer){
var bs58check = require('bs58check')
var bscript = require('./script')
var networks = require('./networks')
var typeforce = require('typeforce')
var types = require('./types')

function fromBase58Check (address) {
  var payload = bs58check.decode(address)
  if (payload.length < 21) throw new TypeError(address + ' is too short')
  if (payload.length > 21) throw new TypeError(address + ' is too long')

  var version = payload[0]
  var hash = payload.slice(1)

  return { hash: hash, version: version }
}

function fromOutputScript (scriptPubKey, network) {
  network = network || networks.bitcoin

  if (bscript.isPubKeyHashOutput(scriptPubKey)) return toBase58Check(scriptPubKey.slice(3, 23), network.pubKeyHash)
  if (bscript.isScriptHashOutput(scriptPubKey)) return toBase58Check(scriptPubKey.slice(2, 22), network.scriptHash)

  throw new Error(bscript.toASM(scriptPubKey) + ' has no matching Address')
}

function toBase58Check (hash, version) {
  typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)

  var payload = new Buffer(21)
  payload.writeUInt8(version, 0)
  hash.copy(payload, 1)

  return bs58check.encode(payload)
}

function toOutputScript (address, network) {
  network = network || networks.bitcoin

  var decode = fromBase58Check(address)
  if (decode.version === network.pubKeyHash) return bscript.pubKeyHashOutput(decode.hash)
  if (decode.version === network.scriptHash) return bscript.scriptHashOutput(decode.hash)

  throw new Error(address + ' has no matching Script')
}

module.exports = {
  fromBase58Check: fromBase58Check,
  fromOutputScript: fromOutputScript,
  toBase58Check: toBase58Check,
  toOutputScript: toOutputScript
}

}).call(this,require("buffer").Buffer)
},{"./networks":46,"./script":48,"./types":51,"bs58check":10,"buffer":177,"typeforce":34}],37:[function(require,module,exports){
(function (Buffer){
var bufferutils = require('./bufferutils')
var bcrypto = require('./crypto')

var Transaction = require('./transaction')

function Block () {
  this.version = 1
  this.prevHash = null
  this.merkleRoot = null
  this.timestamp = 0
  this.bits = 0
  this.nonce = 0
}

Block.fromBuffer = function (buffer) {
  if (buffer.length < 80) throw new Error('Buffer too small (< 80 bytes)')

  var offset = 0
  function readSlice (n) {
    offset += n
    return buffer.slice(offset - n, offset)
  }

  function readUInt32 () {
    var i = buffer.readUInt32LE(offset)
    offset += 4
    return i
  }

  var block = new Block()
  block.version = readUInt32()
  block.prevHash = readSlice(32)
  block.merkleRoot = readSlice(32)
  block.timestamp = readUInt32()
  block.bits = readUInt32()
  block.nonce = readUInt32()

  if (buffer.length === 80) return block

  function readVarInt () {
    var vi = bufferutils.readVarInt(buffer, offset)
    offset += vi.size
    return vi.number
  }

  function readTransaction () {
    var tx = Transaction.fromBuffer(buffer.slice(offset), true)

    offset += tx.byteLength()
    return tx
  }

  var nTransactions = readVarInt()
  block.transactions = []

  for (var i = 0; i < nTransactions; ++i) {
    var tx = readTransaction()
    block.transactions.push(tx)
  }

  return block
}

Block.fromHex = function (hex) {
  return Block.fromBuffer(new Buffer(hex, 'hex'))
}

Block.prototype.getHash = function () {
  return bcrypto.hash256(this.toBuffer(true))
}

Block.prototype.getId = function () {
  return [].reverse.call(this.getHash()).toString('hex')
}

Block.prototype.getUTCDate = function () {
  var date = new Date(0) // epoch
  date.setUTCSeconds(this.timestamp)

  return date
}

Block.prototype.toBuffer = function (headersOnly) {
  var buffer = new Buffer(80)

  var offset = 0
  function writeSlice (slice) {
    slice.copy(buffer, offset)
    offset += slice.length
  }

  function writeUInt32 (i) {
    buffer.writeUInt32LE(i, offset)
    offset += 4
  }

  writeUInt32(this.version)
  writeSlice(this.prevHash)
  writeSlice(this.merkleRoot)
  writeUInt32(this.timestamp)
  writeUInt32(this.bits)
  writeUInt32(this.nonce)

  if (headersOnly || !this.transactions) return buffer

  var txLenBuffer = bufferutils.varIntBuffer(this.transactions.length)
  var txBuffers = this.transactions.map(function (tx) {
    return tx.toBuffer()
  })

  return Buffer.concat([buffer, txLenBuffer].concat(txBuffers))
}

Block.prototype.toHex = function (headersOnly) {
  return this.toBuffer(headersOnly).toString('hex')
}

module.exports = Block

}).call(this,require("buffer").Buffer)
},{"./bufferutils":38,"./crypto":39,"./transaction":49,"buffer":177}],38:[function(require,module,exports){
(function (Buffer){
var opcodes = require('./opcodes')

// https://github.com/feross/buffer/blob/master/index.js#L1127
function verifuint (value, max) {
  if (typeof value !== 'number') throw new Error('cannot write a non-number as a number')
  if (value < 0) throw new Error('specified a negative value for writing an unsigned value')
  if (value > max) throw new Error('value is larger than maximum value for type')
  if (Math.floor(value) !== value) throw new Error('value has a fractional component')
}

function pushDataSize (i) {
  return i < opcodes.OP_PUSHDATA1 ? 1
  : i < 0xff ? 2
  : i < 0xffff ? 3
  : 5
}

function readPushDataInt (buffer, offset) {
  var opcode = buffer.readUInt8(offset)
  var number, size

  // ~6 bit
  if (opcode < opcodes.OP_PUSHDATA1) {
    number = opcode
    size = 1

  // 8 bit
  } else if (opcode === opcodes.OP_PUSHDATA1) {
    if (offset + 2 > buffer.length) return null
    number = buffer.readUInt8(offset + 1)
    size = 2

  // 16 bit
  } else if (opcode === opcodes.OP_PUSHDATA2) {
    if (offset + 3 > buffer.length) return null
    number = buffer.readUInt16LE(offset + 1)
    size = 3

  // 32 bit
  } else {
    if (offset + 5 > buffer.length) return null
    if (opcode !== opcodes.OP_PUSHDATA4) throw new Error('Unexpected opcode')

    number = buffer.readUInt32LE(offset + 1)
    size = 5
  }

  return {
    opcode: opcode,
    number: number,
    size: size
  }
}

function readUInt64LE (buffer, offset) {
  var a = buffer.readUInt32LE(offset)
  var b = buffer.readUInt32LE(offset + 4)
  b *= 0x100000000

  verifuint(b + a, 0x001fffffffffffff)

  return b + a
}

function readVarInt (buffer, offset) {
  var t = buffer.readUInt8(offset)
  var number, size

  // 8 bit
  if (t < 253) {
    number = t
    size = 1

  // 16 bit
  } else if (t < 254) {
    number = buffer.readUInt16LE(offset + 1)
    size = 3

  // 32 bit
  } else if (t < 255) {
    number = buffer.readUInt32LE(offset + 1)
    size = 5

  // 64 bit
  } else {
    number = readUInt64LE(buffer, offset + 1)
    size = 9
  }

  return {
    number: number,
    size: size
  }
}

function writePushDataInt (buffer, number, offset) {
  var size = pushDataSize(number)

  // ~6 bit
  if (size === 1) {
    buffer.writeUInt8(number, offset)

  // 8 bit
  } else if (size === 2) {
    buffer.writeUInt8(opcodes.OP_PUSHDATA1, offset)
    buffer.writeUInt8(number, offset + 1)

  // 16 bit
  } else if (size === 3) {
    buffer.writeUInt8(opcodes.OP_PUSHDATA2, offset)
    buffer.writeUInt16LE(number, offset + 1)

  // 32 bit
  } else {
    buffer.writeUInt8(opcodes.OP_PUSHDATA4, offset)
    buffer.writeUInt32LE(number, offset + 1)
  }

  return size
}

function writeUInt64LE (buffer, value, offset) {
  verifuint(value, 0x001fffffffffffff)

  buffer.writeInt32LE(value & -1, offset)
  buffer.writeUInt32LE(Math.floor(value / 0x100000000), offset + 4)
}

function varIntSize (i) {
  return i < 253 ? 1
  : i < 0x10000 ? 3
  : i < 0x100000000 ? 5
  : 9
}

function writeVarInt (buffer, number, offset) {
  var size = varIntSize(number)

  // 8 bit
  if (size === 1) {
    buffer.writeUInt8(number, offset)

  // 16 bit
  } else if (size === 3) {
    buffer.writeUInt8(253, offset)
    buffer.writeUInt16LE(number, offset + 1)

  // 32 bit
  } else if (size === 5) {
    buffer.writeUInt8(254, offset)
    buffer.writeUInt32LE(number, offset + 1)

  // 64 bit
  } else {
    buffer.writeUInt8(255, offset)
    writeUInt64LE(buffer, number, offset + 1)
  }

  return size
}

function varIntBuffer (i) {
  var size = varIntSize(i)
  var buffer = new Buffer(size)
  writeVarInt(buffer, i, 0)

  return buffer
}

module.exports = {
  equal: require('buffer-equals'),
  pushDataSize: pushDataSize,
  readPushDataInt: readPushDataInt,
  readUInt64LE: readUInt64LE,
  readVarInt: readVarInt,
  reverse: require('buffer-reverse'),
  varIntBuffer: varIntBuffer,
  varIntSize: varIntSize,
  writePushDataInt: writePushDataInt,
  writeUInt64LE: writeUInt64LE,
  writeVarInt: writeVarInt
}

}).call(this,require("buffer").Buffer)
},{"./opcodes":47,"buffer":177,"buffer-equals":12,"buffer-reverse":13}],39:[function(require,module,exports){
var createHash = require('create-hash')

function hash160 (buffer) {
  return ripemd160(sha256(buffer))
}

function hash256 (buffer) {
  return sha256(sha256(buffer))
}

function ripemd160 (buffer) {
  return createHash('rmd160').update(buffer).digest()
}

function sha1 (buffer) {
  return createHash('sha1').update(buffer).digest()
}

function sha256 (buffer) {
  return createHash('sha256').update(buffer).digest()
}

module.exports = {
  hash160: hash160,
  hash256: hash256,
  ripemd160: ripemd160,
  sha1: sha1,
  sha256: sha256
}

},{"create-hash":14}],40:[function(require,module,exports){
(function (Buffer){
var createHmac = require('create-hmac')
var typeforce = require('typeforce')
var types = require('./types')

var BigInteger = require('bigi')
var ECSignature = require('./ecsignature')

var ZERO = new Buffer([0])
var ONE = new Buffer([1])

var ecurve = require('ecurve')
var secp256k1 = ecurve.getCurveByName('secp256k1')

// https://tools.ietf.org/html/rfc6979#section-3.2
function deterministicGenerateK (hash, x, checkSig) {
  typeforce(types.tuple(
    types.Hash256bit,
    types.Buffer256bit,
    types.Function
  ), arguments)

  var k = new Buffer(32)
  var v = new Buffer(32)

  // Step A, ignored as hash already provided
  // Step B
  v.fill(1)

  // Step C
  k.fill(0)

  // Step D
  k = createHmac('sha256', k)
    .update(v)
    .update(ZERO)
    .update(x)
    .update(hash)
    .digest()

  // Step E
  v = createHmac('sha256', k).update(v).digest()

  // Step F
  k = createHmac('sha256', k)
    .update(v)
    .update(ONE)
    .update(x)
    .update(hash)
    .digest()

  // Step G
  v = createHmac('sha256', k).update(v).digest()

  // Step H1/H2a, ignored as tlen === qlen (256 bit)
  // Step H2b
  v = createHmac('sha256', k).update(v).digest()

  var T = BigInteger.fromBuffer(v)

  // Step H3, repeat until T is within the interval [1, n - 1] and is suitable for ECDSA
  while (T.signum() <= 0 || T.compareTo(secp256k1.n) >= 0 || !checkSig(T)) {
    k = createHmac('sha256', k)
      .update(v)
      .update(ZERO)
      .digest()

    v = createHmac('sha256', k).update(v).digest()

    // Step H1/H2a, again, ignored as tlen === qlen (256 bit)
    // Step H2b again
    v = createHmac('sha256', k).update(v).digest()
    T = BigInteger.fromBuffer(v)
  }

  return T
}

var N_OVER_TWO = secp256k1.n.shiftRight(1)

function sign (hash, d) {
  typeforce(types.tuple(types.Hash256bit, types.BigInt), arguments)

  var x = d.toBuffer(32)
  var e = BigInteger.fromBuffer(hash)
  var n = secp256k1.n
  var G = secp256k1.G

  var r, s
  deterministicGenerateK(hash, x, function (k) {
    var Q = G.multiply(k)

    if (secp256k1.isInfinity(Q)) return false

    r = Q.affineX.mod(n)
    if (r.signum() === 0) return false

    s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n)
    if (s.signum() === 0) return false

    return true
  })

  // enforce low S values, see bip62: 'low s values in signatures'
  if (s.compareTo(N_OVER_TWO) > 0) {
    s = n.subtract(s)
  }

  return new ECSignature(r, s)
}

function verify (hash, signature, Q) {
  typeforce(types.tuple(
    types.Hash256bit,
    types.ECSignature,
    types.ECPoint
  ), arguments)

  var n = secp256k1.n
  var G = secp256k1.G

  var r = signature.r
  var s = signature.s

  // 1.4.1 Enforce r and s are both integers in the interval [1, n − 1]
  if (r.signum() <= 0 || r.compareTo(n) >= 0) return false
  if (s.signum() <= 0 || s.compareTo(n) >= 0) return false

  // 1.4.2 H = Hash(M), already done by the user
  // 1.4.3 e = H
  var e = BigInteger.fromBuffer(hash)

  // Compute s^-1
  var sInv = s.modInverse(n)

  // 1.4.4 Compute u1 = es^−1 mod n
  //               u2 = rs^−1 mod n
  var u1 = e.multiply(sInv).mod(n)
  var u2 = r.multiply(sInv).mod(n)

  // 1.4.5 Compute R = (xR, yR)
  //               R = u1G + u2Q
  var R = G.multiplyTwo(u1, Q, u2)

  // 1.4.5 (cont.) Enforce R is not at infinity
  if (secp256k1.isInfinity(R)) return false

  // 1.4.6 Convert the field element R.x to an integer
  var xR = R.affineX

  // 1.4.7 Set v = xR mod n
  var v = xR.mod(n)

  // 1.4.8 If v = r, output "valid", and if v != r, output "invalid"
  return v.equals(r)
}

/**
  * Recover a public key from a signature.
  *
  * See SEC 1: Elliptic Curve Cryptography, section 4.1.6, "Public
  * Key Recovery Operation".
  *
  * http://www.secg.org/download/aid-780/sec1-v2.pdf
  */
function recoverPubKey (e, signature, i) {
  typeforce(types.tuple(
    types.BigInt,
    types.ECSignature,
    types.UInt2
  ), arguments)

  var n = secp256k1.n
  var G = secp256k1.G
  var r = signature.r
  var s = signature.s

  if (r.signum() <= 0 || r.compareTo(n) >= 0) throw new Error('Invalid r value')
  if (s.signum() <= 0 || s.compareTo(n) >= 0) throw new Error('Invalid s value')

  // A set LSB signifies that the y-coordinate is odd
  var isYOdd = i & 1

  // The more significant bit specifies whether we should use the
  // first or second candidate key.
  var isSecondKey = i >> 1

  // 1.1 Let x = r + jn
  var x = isSecondKey ? r.add(n) : r
  var R = secp256k1.pointFromX(isYOdd, x)

  // 1.4 Check that nR is at infinity
  var nR = R.multiply(n)
  if (!secp256k1.isInfinity(nR)) throw new Error('nR is not a valid curve point')

  // Compute r^-1
  var rInv = r.modInverse(n)

  // Compute -e from e
  var eNeg = e.negate().mod(n)

  // 1.6.1 Compute Q = r^-1 (sR -  eG)
  //               Q = r^-1 (sR + -eG)
  var Q = R.multiplyTwo(s, G, eNeg).multiply(rInv)

  secp256k1.validate(Q)

  return Q
}

/**
  * Calculate pubkey extraction parameter.
  *
  * When extracting a pubkey from a signature, we have to
  * distinguish four different cases. Rather than putting this
  * burden on the verifier, Bitcoin includes a 2-bit value with the
  * signature.
  *
  * This function simply tries all four cases and returns the value
  * that resulted in a successful pubkey recovery.
  */
function calcPubKeyRecoveryParam (e, signature, Q) {
  typeforce(types.tuple(
    types.BigInt,
    types.ECSignature,
    types.ECPoint
  ), arguments)

  for (var i = 0; i < 4; i++) {
    var Qprime = recoverPubKey(e, signature, i)

    // 1.6.2 Verify Q
    if (Qprime.equals(Q)) {
      return i
    }
  }

  throw new Error('Unable to find valid recovery factor')
}

module.exports = {
  calcPubKeyRecoveryParam: calcPubKeyRecoveryParam,
  deterministicGenerateK: deterministicGenerateK,
  recoverPubKey: recoverPubKey,
  sign: sign,
  verify: verify,

  // TODO: remove
  __curve: secp256k1
}

}).call(this,require("buffer").Buffer)
},{"./ecsignature":42,"./types":51,"bigi":7,"buffer":177,"create-hmac":27,"ecurve":30,"typeforce":34}],41:[function(require,module,exports){
(function (Buffer){
var bcrypto = require('./crypto')
var bs58check = require('bs58check')
var ecdsa = require('./ecdsa')
var randomBytes = require('randombytes')
var typeforce = require('typeforce')
var types = require('./types')
var wif = require('wif')

var NETWORKS = require('./networks')
var BigInteger = require('bigi')

var ecurve = require('ecurve')
var secp256k1 = ecdsa.__curve

function ECPair (d, Q, options) {
  if (options) {
    typeforce({
      compressed: types.maybe(types.Boolean),
      network: types.maybe(types.Network)
    }, options)
  }

  options = options || {}

  if (d) {
    if (d.signum() <= 0) throw new Error('Private key must be greater than 0')
    if (d.compareTo(secp256k1.n) >= 0) throw new Error('Private key must be less than the curve order')
    if (Q) throw new TypeError('Unexpected publicKey parameter')

    this.d = d
  } else {
    typeforce(types.ECPoint, Q)

    this.__Q = Q
  }

  this.compressed = options.compressed === undefined ? true : options.compressed
  this.network = options.network || NETWORKS.bitcoin
}

Object.defineProperty(ECPair.prototype, 'Q', {
  get: function () {
    if (!this.__Q && this.d) {
      this.__Q = secp256k1.G.multiply(this.d)
    }

    return this.__Q
  }
})

ECPair.fromPublicKeyBuffer = function (buffer, network) {
  var Q = ecurve.Point.decodeFrom(secp256k1, buffer)

  return new ECPair(null, Q, {
    compressed: Q.compressed,
    network: network
  })
}

ECPair.fromWIF = function (string, network) {
  network = network || NETWORKS.bitcoin
  var buffer = bs58check.decode(string)

  if (types.Array(network)) {
    var version = buffer[0]

    network = network.filter(function (network) {
      return version === network.wif
    }).pop() || {}
  }

  var decoded = wif.decodeRaw(network.wif, buffer)
  var d = BigInteger.fromBuffer(decoded.d)

  return new ECPair(d, null, {
    compressed: decoded.compressed,
    network: network
  })
}

ECPair.makeRandom = function (options) {
  options = options || {}

  var rng = options.rng || randomBytes

  var d
  do {
    var buffer = rng(32)
    typeforce(types.Buffer256bit, buffer)

    d = BigInteger.fromBuffer(buffer)
  } while (d.signum() <= 0 || d.compareTo(secp256k1.n) >= 0)

  return new ECPair(d, null, options)
}

ECPair.prototype.getAddress = function () {
  var pubKey = this.getPublicKeyBuffer()
  var pubKeyHash = bcrypto.hash160(pubKey)

  var payload = new Buffer(21)
  payload.writeUInt8(this.network.pubKeyHash, 0)
  pubKeyHash.copy(payload, 1)

  return bs58check.encode(payload)
}

ECPair.prototype.getNetwork = function () {
  return this.network
}

ECPair.prototype.getPublicKeyBuffer = function () {
  return this.Q.getEncoded(this.compressed)
}

ECPair.prototype.sign = function (hash) {
  if (!this.d) throw new Error('Missing private key')

  return ecdsa.sign(hash, this.d)
}

ECPair.prototype.toWIF = function () {
  if (!this.d) throw new Error('Missing private key')

  return wif.encode(this.network.wif, this.d.toBuffer(32), this.compressed)
}

ECPair.prototype.verify = function (hash, signature) {
  return ecdsa.verify(hash, signature, this.Q)
}

module.exports = ECPair

}).call(this,require("buffer").Buffer)
},{"./crypto":39,"./ecdsa":40,"./networks":46,"./types":51,"bigi":7,"bs58check":10,"buffer":177,"ecurve":30,"randombytes":33,"typeforce":34,"wif":35}],42:[function(require,module,exports){
(function (Buffer){
var bip66 = require('bip66')
var typeforce = require('typeforce')
var types = require('./types')

var BigInteger = require('bigi')

function ECSignature (r, s) {
  typeforce(types.tuple(types.BigInt, types.BigInt), arguments)

  this.r = r
  this.s = s
}

ECSignature.parseCompact = function (buffer) {
  if (buffer.length !== 65) throw new Error('Invalid signature length')

  var flagByte = buffer.readUInt8(0) - 27
  if (flagByte !== (flagByte & 7)) throw new Error('Invalid signature parameter')

  var compressed = !!(flagByte & 4)
  var recoveryParam = flagByte & 3

  var r = BigInteger.fromBuffer(buffer.slice(1, 33))
  var s = BigInteger.fromBuffer(buffer.slice(33))

  return {
    compressed: compressed,
    i: recoveryParam,
    signature: new ECSignature(r, s)
  }
}

ECSignature.fromDER = function (buffer) {
  var decode = bip66.decode(buffer)
  var r = BigInteger.fromDERInteger(decode.r)
  var s = BigInteger.fromDERInteger(decode.s)

  return new ECSignature(r, s)
}

// BIP62: 1 byte hashType flag (only 0x01, 0x02, 0x03, 0x81, 0x82 and 0x83 are allowed)
ECSignature.parseScriptSignature = function (buffer) {
  var hashType = buffer.readUInt8(buffer.length - 1)
  var hashTypeMod = hashType & ~0x80

  if (hashTypeMod <= 0x00 || hashTypeMod >= 0x04) throw new Error('Invalid hashType ' + hashType)

  return {
    signature: ECSignature.fromDER(buffer.slice(0, -1)),
    hashType: hashType
  }
}

ECSignature.prototype.toCompact = function (i, compressed) {
  if (compressed) {
    i += 4
  }

  i += 27

  var buffer = new Buffer(65)
  buffer.writeUInt8(i, 0)

  this.r.toBuffer(32).copy(buffer, 1)
  this.s.toBuffer(32).copy(buffer, 33)

  return buffer
}

ECSignature.prototype.toDER = function () {
  var r = new Buffer(this.r.toDERInteger())
  var s = new Buffer(this.s.toDERInteger())

  return bip66.encode(r, s)
}

ECSignature.prototype.toScriptSignature = function (hashType) {
  var hashTypeMod = hashType & ~0x80
  if (hashTypeMod <= 0 || hashTypeMod >= 4) throw new Error('Invalid hashType ' + hashType)

  var hashTypeBuffer = new Buffer(1)
  hashTypeBuffer.writeUInt8(hashType, 0)

  return Buffer.concat([this.toDER(), hashTypeBuffer])
}

module.exports = ECSignature

}).call(this,require("buffer").Buffer)
},{"./types":51,"bigi":7,"bip66":9,"buffer":177,"typeforce":34}],43:[function(require,module,exports){
(function (Buffer){
var base58check = require('bs58check')
var bcrypto = require('./crypto')
var createHmac = require('create-hmac')
var typeforce = require('typeforce')
var types = require('./types')
var NETWORKS = require('./networks')

var BigInteger = require('bigi')
var ECPair = require('./ecpair')

var ecurve = require('ecurve')
var curve = ecurve.getCurveByName('secp256k1')

function HDNode (keyPair, chainCode) {
  typeforce(types.tuple('ECPair', types.Buffer256bit), arguments)

  if (!keyPair.compressed) throw new TypeError('BIP32 only allows compressed keyPairs')

  this.keyPair = keyPair
  this.chainCode = chainCode
  this.depth = 0
  this.index = 0
  this.parentFingerprint = 0x00000000
}

HDNode.HIGHEST_BIT = 0x80000000
HDNode.LENGTH = 78
HDNode.MASTER_SECRET = new Buffer('Bitcoin seed')

HDNode.fromSeedBuffer = function (seed, network) {
  typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments)

  if (seed.length < 16) throw new TypeError('Seed should be at least 128 bits')
  if (seed.length > 64) throw new TypeError('Seed should be at most 512 bits')

  var I = createHmac('sha512', HDNode.MASTER_SECRET).update(seed).digest()
  var IL = I.slice(0, 32)
  var IR = I.slice(32)

  // In case IL is 0 or >= n, the master key is invalid
  // This is handled by the ECPair constructor
  var pIL = BigInteger.fromBuffer(IL)
  var keyPair = new ECPair(pIL, null, {
    network: network
  })

  return new HDNode(keyPair, IR)
}

HDNode.fromSeedHex = function (hex, network) {
  return HDNode.fromSeedBuffer(new Buffer(hex, 'hex'), network)
}

HDNode.fromBase58 = function (string, networks) {
  var buffer = base58check.decode(string)
  if (buffer.length !== 78) throw new Error('Invalid buffer length')

  // 4 bytes: version bytes
  var version = buffer.readUInt32BE(0)
  var network

  // list of networks?
  if (Array.isArray(networks)) {
    network = networks.filter(function (network) {
      return version === network.bip32.private ||
             version === network.bip32.public
    }).pop() || {}

  // otherwise, assume a network object (or default to bitcoin)
  } else {
    network = networks || NETWORKS.bitcoin
  }

  if (version !== network.bip32.private &&
    version !== network.bip32.public) throw new Error('Invalid network')

  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ...
  var depth = buffer[4]

  // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
  var parentFingerprint = buffer.readUInt32BE(5)
  if (depth === 0) {
    if (parentFingerprint !== 0x00000000) throw new Error('Invalid parent fingerprint')
  }

  // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized.
  // This is encoded in MSB order. (0x00000000 if master key)
  var index = buffer.readUInt32BE(9)
  if (depth === 0 && index !== 0) throw new Error('Invalid index')

  // 32 bytes: the chain code
  var chainCode = buffer.slice(13, 45)
  var keyPair

  // 33 bytes: private key data (0x00 + k)
  if (version === network.bip32.private) {
    if (buffer.readUInt8(45) !== 0x00) throw new Error('Invalid private key')

    var d = BigInteger.fromBuffer(buffer.slice(46, 78))

    keyPair = new ECPair(d, null, {
      network: network
    })

  // 33 bytes: public key data (0x02 + X or 0x03 + X)
  } else {
    var Q = ecurve.Point.decodeFrom(curve, buffer.slice(45, 78))
    if (!Q.compressed) throw new Error('Invalid public key')

    // Verify that the X coordinate in the public point corresponds to a point on the curve.
    // If not, the extended public key is invalid.
    curve.validate(Q)

    keyPair = new ECPair(null, Q, {
      network: network
    })
  }

  var hd = new HDNode(keyPair, chainCode)
  hd.depth = depth
  hd.index = index
  hd.parentFingerprint = parentFingerprint

  return hd
}

HDNode.prototype.getAddress = function () {
  return this.keyPair.getAddress()
}

HDNode.prototype.getIdentifier = function () {
  return bcrypto.hash160(this.keyPair.getPublicKeyBuffer())
}

HDNode.prototype.getFingerprint = function () {
  return this.getIdentifier().slice(0, 4)
}

HDNode.prototype.getNetwork = function () {
  return this.keyPair.getNetwork()
}

HDNode.prototype.getPublicKeyBuffer = function () {
  return this.keyPair.getPublicKeyBuffer()
}

HDNode.prototype.neutered = function () {
  var neuteredKeyPair = new ECPair(null, this.keyPair.Q, {
    network: this.keyPair.network
  })

  var neutered = new HDNode(neuteredKeyPair, this.chainCode)
  neutered.depth = this.depth
  neutered.index = this.index
  neutered.parentFingerprint = this.parentFingerprint

  return neutered
}

HDNode.prototype.sign = function (hash) {
  return this.keyPair.sign(hash)
}

HDNode.prototype.verify = function (hash, signature) {
  return this.keyPair.verify(hash, signature)
}

HDNode.prototype.toBase58 = function (__isPrivate) {
  if (__isPrivate !== undefined) throw new TypeError('Unsupported argument in 2.0.0')

  // Version
  var network = this.keyPair.network
  var version = this.keyPair.d ? network.bip32.private : network.bip32.public
  var buffer = new Buffer(78)

  // 4 bytes: version bytes
  buffer.writeUInt32BE(version, 0)

  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ....
  buffer.writeUInt8(this.depth, 4)

  // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
  buffer.writeUInt32BE(this.parentFingerprint, 5)

  // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized.
  // This is encoded in big endian. (0x00000000 if master key)
  buffer.writeUInt32BE(this.index, 9)

  // 32 bytes: the chain code
  this.chainCode.copy(buffer, 13)

  // 33 bytes: the public key or private key data
  if (this.keyPair.d) {
    // 0x00 + k for private keys
    buffer.writeUInt8(0, 45)
    this.keyPair.d.toBuffer(32).copy(buffer, 46)

  // 33 bytes: the public key
  } else {
    // X9.62 encoding for public keys
    this.keyPair.getPublicKeyBuffer().copy(buffer, 45)
  }

  return base58check.encode(buffer)
}

// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#child-key-derivation-ckd-functions
HDNode.prototype.derive = function (index) {
  var isHardened = index >= HDNode.HIGHEST_BIT
  var data = new Buffer(37)

  // Hardened child
  if (isHardened) {
    if (!this.keyPair.d) throw new TypeError('Could not derive hardened child key')

    // data = 0x00 || ser256(kpar) || ser32(index)
    data[0] = 0x00
    this.keyPair.d.toBuffer(32).copy(data, 1)
    data.writeUInt32BE(index, 33)

  // Normal child
  } else {
    // data = serP(point(kpar)) || ser32(index)
    //      = serP(Kpar) || ser32(index)
    this.keyPair.getPublicKeyBuffer().copy(data, 0)
    data.writeUInt32BE(index, 33)
  }

  var I = createHmac('sha512', this.chainCode).update(data).digest()
  var IL = I.slice(0, 32)
  var IR = I.slice(32)

  var pIL = BigInteger.fromBuffer(IL)

  // In case parse256(IL) >= n, proceed with the next value for i
  if (pIL.compareTo(curve.n) >= 0) {
    return this.derive(index + 1)
  }

  // Private parent key -> private child key
  var derivedKeyPair
  if (this.keyPair.d) {
    // ki = parse256(IL) + kpar (mod n)
    var ki = pIL.add(this.keyPair.d).mod(curve.n)

    // In case ki == 0, proceed with the next value for i
    if (ki.signum() === 0) {
      return this.derive(index + 1)
    }

    derivedKeyPair = new ECPair(ki, null, {
      network: this.keyPair.network
    })

  // Public parent key -> public child key
  } else {
    // Ki = point(parse256(IL)) + Kpar
    //    = G*IL + Kpar
    var Ki = curve.G.multiply(pIL).add(this.keyPair.Q)

    // In case Ki is the point at infinity, proceed with the next value for i
    if (curve.isInfinity(Ki)) {
      return this.derive(index + 1)
    }

    derivedKeyPair = new ECPair(null, Ki, {
      network: this.keyPair.network
    })
  }

  var hd = new HDNode(derivedKeyPair, IR)
  hd.depth = this.depth + 1
  hd.index = index
  hd.parentFingerprint = this.getFingerprint().readUInt32BE(0)

  return hd
}

HDNode.prototype.deriveHardened = function (index) {
  // Only derives hardened private keys by default
  return this.derive(index + HDNode.HIGHEST_BIT)
}

HDNode.prototype.toString = HDNode.prototype.toBase58

module.exports = HDNode

}).call(this,require("buffer").Buffer)
},{"./crypto":39,"./ecpair":41,"./networks":46,"./types":51,"bigi":7,"bs58check":10,"buffer":177,"create-hmac":27,"ecurve":30,"typeforce":34}],44:[function(require,module,exports){
module.exports = {
  Block: require('./block'),
  ECPair: require('./ecpair'),
  ECSignature: require('./ecsignature'),
  HDNode: require('./hdnode'),
  Transaction: require('./transaction'),
  TransactionBuilder: require('./transaction_builder'),

  address: require('./address'),
  bufferutils: require('./bufferutils'),
  crypto: require('./crypto'),
  message: require('./message'),
  networks: require('./networks'),
  opcodes: require('./opcodes'),
  script: require('./script')
}

},{"./address":36,"./block":37,"./bufferutils":38,"./crypto":39,"./ecpair":41,"./ecsignature":42,"./hdnode":43,"./message":45,"./networks":46,"./opcodes":47,"./script":48,"./transaction":49,"./transaction_builder":50}],45:[function(require,module,exports){
(function (Buffer){
var bufferutils = require('./bufferutils')
var bcrypto = require('./crypto')
var ecdsa = require('./ecdsa')
var networks = require('./networks')

var BigInteger = require('bigi')
var ECPair = require('./ecpair')
var ECSignature = require('./ecsignature')

function magicHash (message, network) {
  var messagePrefix = new Buffer(network.messagePrefix)
  var messageBuffer = new Buffer(message)
  var lengthBuffer = bufferutils.varIntBuffer(messageBuffer.length)

  var buffer = Buffer.concat([messagePrefix, lengthBuffer, messageBuffer])
  return bcrypto.hash256(buffer)
}

function sign (keyPair, message, network) {
  network = network || networks.bitcoin

  var hash = magicHash(message, network)
  var signature = keyPair.sign(hash)
  var e = BigInteger.fromBuffer(hash)
  var i = ecdsa.calcPubKeyRecoveryParam(e, signature, keyPair.Q)

  return signature.toCompact(i, keyPair.compressed)
}

function verify (address, signature, message, network) {
  if (!Buffer.isBuffer(signature)) {
    signature = new Buffer(signature, 'base64')
  }

  network = network || networks.bitcoin

  var hash = magicHash(message, network)
  var parsed = ECSignature.parseCompact(signature)
  var e = BigInteger.fromBuffer(hash)
  var Q = ecdsa.recoverPubKey(e, parsed.signature, parsed.i)

  var keyPair = new ECPair(null, Q, {
    compressed: parsed.compressed,
    network: network
  })

  return keyPair.getAddress() === address
}

module.exports = {
  magicHash: magicHash,
  sign: sign,
  verify: verify
}

}).call(this,require("buffer").Buffer)
},{"./bufferutils":38,"./crypto":39,"./ecdsa":40,"./ecpair":41,"./ecsignature":42,"./networks":46,"bigi":7,"buffer":177}],46:[function(require,module,exports){
// https://en.bitcoin.it/wiki/List_of_address_prefixes
// Dogecoin BIP32 is a proposed standard: https://bitcointalk.org/index.php?topic=409731

module.exports = {
  bitcoin: {
    messagePrefix: '\x18Bitcoin Signed Message:\n',
    bip32: {
      public: 0x0488b21e,
      private: 0x0488ade4
    },
    pubKeyHash: 0x00,
    scriptHash: 0x05,
    wif: 0x80,
    dustThreshold: 546 // https://github.com/bitcoin/bitcoin/blob/v0.9.2/src/core.h#L151-L162
  },
  testnet: {
    messagePrefix: '\x18Bitcoin Signed Message:\n',
    bip32: {
      public: 0x043587cf,
      private: 0x04358394
    },
    pubKeyHash: 0x6f,
    scriptHash: 0xc4,
    wif: 0xef,
    dustThreshold: 546
  },
  litecoin: {
    messagePrefix: '\x19Litecoin Signed Message:\n',
    bip32: {
      public: 0x019da462,
      private: 0x019d9cfe
    },
    pubKeyHash: 0x30,
    scriptHash: 0x05,
    wif: 0xb0,
    dustThreshold: 0 // https://github.com/litecoin-project/litecoin/blob/v0.8.7.2/src/main.cpp#L360-L365
  },
  dogecoin: {
    messagePrefix: '\x19Dogecoin Signed Message:\n',
    bip32: {
      public: 0x02facafd,
      private: 0x02fac398
    },
    pubKeyHash: 0x1e,
    scriptHash: 0x16,
    wif: 0x9e,
    dustThreshold: 0 // https://github.com/dogecoin/dogecoin/blob/v1.7.1/src/core.h#L155-L160
  }
}

},{}],47:[function(require,module,exports){
module.exports={
  "OP_FALSE": 0,
  "OP_0": 0,
  "OP_PUSHDATA1": 76,
  "OP_PUSHDATA2": 77,
  "OP_PUSHDATA4": 78,
  "OP_1NEGATE": 79,
  "OP_RESERVED": 80,
  "OP_1": 81,
  "OP_TRUE": 81,
  "OP_2": 82,
  "OP_3": 83,
  "OP_4": 84,
  "OP_5": 85,
  "OP_6": 86,
  "OP_7": 87,
  "OP_8": 88,
  "OP_9": 89,
  "OP_10": 90,
  "OP_11": 91,
  "OP_12": 92,
  "OP_13": 93,
  "OP_14": 94,
  "OP_15": 95,
  "OP_16": 96,

  "OP_NOP": 97,
  "OP_VER": 98,
  "OP_IF": 99,
  "OP_NOTIF": 100,
  "OP_VERIF": 101,
  "OP_VERNOTIF": 102,
  "OP_ELSE": 103,
  "OP_ENDIF": 104,
  "OP_VERIFY": 105,
  "OP_RETURN": 106,

  "OP_TOALTSTACK": 107,
  "OP_FROMALTSTACK": 108,
  "OP_2DROP": 109,
  "OP_2DUP": 110,
  "OP_3DUP": 111,
  "OP_2OVER": 112,
  "OP_2ROT": 113,
  "OP_2SWAP": 114,
  "OP_IFDUP": 115,
  "OP_DEPTH": 116,
  "OP_DROP": 117,
  "OP_DUP": 118,
  "OP_NIP": 119,
  "OP_OVER": 120,
  "OP_PICK": 121,
  "OP_ROLL": 122,
  "OP_ROT": 123,
  "OP_SWAP": 124,
  "OP_TUCK": 125,

  "OP_CAT": 126,
  "OP_SUBSTR": 127,
  "OP_LEFT": 128,
  "OP_RIGHT": 129,
  "OP_SIZE": 130,

  "OP_INVERT": 131,
  "OP_AND": 132,
  "OP_OR": 133,
  "OP_XOR": 134,
  "OP_EQUAL": 135,
  "OP_EQUALVERIFY": 136,
  "OP_RESERVED1": 137,
  "OP_RESERVED2": 138,

  "OP_1ADD": 139,
  "OP_1SUB": 140,
  "OP_2MUL": 141,
  "OP_2DIV": 142,
  "OP_NEGATE": 143,
  "OP_ABS": 144,
  "OP_NOT": 145,
  "OP_0NOTEQUAL": 146,
  "OP_ADD": 147,
  "OP_SUB": 148,
  "OP_MUL": 149,
  "OP_DIV": 150,
  "OP_MOD": 151,
  "OP_LSHIFT": 152,
  "OP_RSHIFT": 153,

  "OP_BOOLAND": 154,
  "OP_BOOLOR": 155,
  "OP_NUMEQUAL": 156,
  "OP_NUMEQUALVERIFY": 157,
  "OP_NUMNOTEQUAL": 158,
  "OP_LESSTHAN": 159,
  "OP_GREATERTHAN": 160,
  "OP_LESSTHANOREQUAL": 161,
  "OP_GREATERTHANOREQUAL": 162,
  "OP_MIN": 163,
  "OP_MAX": 164,

  "OP_WITHIN": 165,

  "OP_RIPEMD160": 166,
  "OP_SHA1": 167,
  "OP_SHA256": 168,
  "OP_HASH160": 169,
  "OP_HASH256": 170,
  "OP_CODESEPARATOR": 171,
  "OP_CHECKSIG": 172,
  "OP_CHECKSIGVERIFY": 173,
  "OP_CHECKMULTISIG": 174,
  "OP_CHECKMULTISIGVERIFY": 175,

  "OP_NOP1": 176,
  "OP_NOP2": 177,
  "OP_NOP3": 178,
  "OP_NOP4": 179,
  "OP_NOP5": 180,
  "OP_NOP6": 181,
  "OP_NOP7": 182,
  "OP_NOP8": 183,
  "OP_NOP9": 184,
  "OP_NOP10": 185,

  "OP_PUBKEYHASH": 253,
  "OP_PUBKEY": 254,
  "OP_INVALIDOPCODE": 255
}

},{}],48:[function(require,module,exports){
(function (Buffer){
var bip66 = require('bip66')
var bufferutils = require('./bufferutils')
var typeforce = require('typeforce')
var types = require('./types')

var OPS = require('./opcodes')
var REVERSE_OPS = (function () {
  var result = {}
  for (var op in OPS) {
    var code = OPS[op]
    result[code] = op
  }
  return result
})()

var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1

function toASM (chunks) {
  if (types.Buffer(chunks)) {
    chunks = decompile(chunks)
  }

  return chunks.map(function (chunk) {
    // data?
    if (Buffer.isBuffer(chunk)) return chunk.toString('hex')

    // opcode!
    return REVERSE_OPS[chunk]
  }).join(' ')
}

function fromASM (asm) {
  typeforce(types.String, asm)

  return compile(asm.split(' ').map(function (chunkStr) {
    // opcode?
    if (OPS[chunkStr] !== undefined) return OPS[chunkStr]

    // data!
    return new Buffer(chunkStr, 'hex')
  }))
}

function compile (chunks) {
  // TODO: remove me
  if (types.Buffer(chunks)) return chunks

  typeforce(types.Array, chunks)

  var bufferSize = chunks.reduce(function (accum, chunk) {
    // data chunk
    if (Buffer.isBuffer(chunk)) {
      return accum + bufferutils.pushDataSize(chunk.length) + chunk.length
    }

    // opcode
    return accum + 1
  }, 0.0)

  var buffer = new Buffer(bufferSize)
  var offset = 0

  chunks.forEach(function (chunk) {
    // data chunk
    if (Buffer.isBuffer(chunk)) {
      offset += bufferutils.writePushDataInt(buffer, chunk.length, offset)

      chunk.copy(buffer, offset)
      offset += chunk.length

    // opcode
    } else {
      buffer.writeUInt8(chunk, offset)
      offset += 1
    }
  })

  if (offset !== buffer.length) throw new Error('Could not decode chunks')
  return buffer
}

function decompile (buffer) {
  // TODO: remove me
  if (types.Array(buffer)) return buffer

  typeforce(types.Buffer, buffer)

  var chunks = []
  var i = 0

  while (i < buffer.length) {
    var opcode = buffer[i]

    // data chunk
    if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) {
      var d = bufferutils.readPushDataInt(buffer, i)

      // did reading a pushDataInt fail? empty script
      if (d === null) return []
      i += d.size

      // attempt to read too much data? empty script
      if (i + d.number > buffer.length) return []

      var data = buffer.slice(i, i + d.number)
      i += d.number

      chunks.push(data)

    // opcode
    } else {
      chunks.push(opcode)

      i += 1
    }
  }

  return chunks
}

function isCanonicalPubKey (buffer) {
  if (!Buffer.isBuffer(buffer)) return false
  if (buffer.length < 33) return false

  switch (buffer[0]) {
    case 0x02:
    case 0x03:
      return buffer.length === 33
    case 0x04:
      return buffer.length === 65
  }

  return false
}

function isCanonicalSignature (buffer) {
  if (!Buffer.isBuffer(buffer)) return false
  if (!isDefinedHashType(buffer[buffer.length - 1])) return false

  return bip66.check(buffer.slice(0, -1))
}

function isDefinedHashType (hashType) {
  var hashTypeMod = hashType & ~0x80

// return hashTypeMod > SIGHASH_ALL && hashTypeMod < SIGHASH_SINGLE
  return hashTypeMod > 0x00 && hashTypeMod < 0x04
}

function isPubKeyHashInput (script) {
  var chunks = decompile(script)

  return chunks.length === 2 &&
    isCanonicalSignature(chunks[0]) &&
    isCanonicalPubKey(chunks[1])
}

function isPubKeyHashOutput (script) {
  var buffer = compile(script)

  return buffer.length === 25 &&
    buffer[0] === OPS.OP_DUP &&
    buffer[1] === OPS.OP_HASH160 &&
    buffer[2] === 0x14 &&
    buffer[23] === OPS.OP_EQUALVERIFY &&
    buffer[24] === OPS.OP_CHECKSIG
}

function isPubKeyInput (script) {
  var chunks = decompile(script)

  return chunks.length === 1 &&
    isCanonicalSignature(chunks[0])
}

function isPubKeyOutput (script) {
  var chunks = decompile(script)

  return chunks.length === 2 &&
    isCanonicalPubKey(chunks[0]) &&
    chunks[1] === OPS.OP_CHECKSIG
}

function isScriptHashInput (script, allowIncomplete) {
  var chunks = decompile(script)
  if (chunks.length < 2) return false

  var lastChunk = chunks[chunks.length - 1]
  if (!Buffer.isBuffer(lastChunk)) return false

  var scriptSigChunks = chunks.slice(0, -1)
  var redeemScriptChunks = decompile(lastChunk)

  // is redeemScript a valid script?
  if (redeemScriptChunks.length === 0) return false

  return classifyInput(scriptSigChunks, allowIncomplete) === classifyOutput(redeemScriptChunks)
}

function isScriptHashOutput (script) {
  var buffer = compile(script)

  return buffer.length === 23 &&
    buffer[0] === OPS.OP_HASH160 &&
    buffer[1] === 0x14 &&
    buffer[22] === OPS.OP_EQUAL
}

// allowIncomplete is to account for combining signatures
// See https://github.com/bitcoin/bitcoin/blob/f425050546644a36b0b8e0eb2f6934a3e0f6f80f/src/script/sign.cpp#L195-L197
function isMultisigInput (script, allowIncomplete) {
  var chunks = decompile(script)
  if (chunks.length < 2) return false
  if (chunks[0] !== OPS.OP_0) return false

  if (allowIncomplete) {
    return chunks.slice(1).every(function (chunk) {
      return chunk === OPS.OP_0 || isCanonicalSignature(chunk)
    })
  }

  return chunks.slice(1).every(isCanonicalSignature)
}

function isMultisigOutput (script) {
  var chunks = decompile(script)
  if (chunks.length < 4) return false
  if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false

  var mOp = chunks[0]
  var nOp = chunks[chunks.length - 2]

  if (!types.Number(mOp)) return false
  if (!types.Number(nOp)) return false

  var m = mOp - OP_INT_BASE
  var n = nOp - OP_INT_BASE

  // 0 < m <= n <= 16
  if (m <= 0) return false
  if (m > n) return false
  if (n > 16) return false
  if (n !== chunks.length - 3) return false

  return chunks.slice(1, -2).every(isCanonicalPubKey)
}

function isNullDataOutput (script) {
  var chunks = decompile(script)
  return chunks[0] === OPS.OP_RETURN
}

function classifyOutput (script) {
  var chunks = decompile(script)

  if (isPubKeyHashOutput(chunks)) {
    return 'pubkeyhash'
  } else if (isScriptHashOutput(chunks)) {
    return 'scripthash'
  } else if (isMultisigOutput(chunks)) {
    return 'multisig'
  } else if (isPubKeyOutput(chunks)) {
    return 'pubkey'
  } else if (isNullDataOutput(chunks)) {
    return 'nulldata'
  }

  return 'nonstandard'
}

function classifyInput (script, allowIncomplete) {
  var chunks = decompile(script)

  if (isPubKeyHashInput(chunks)) {
    return 'pubkeyhash'
  } else if (isMultisigInput(chunks, allowIncomplete)) {
    return 'multisig'
  } else if (isScriptHashInput(chunks, allowIncomplete)) {
    return 'scripthash'
  } else if (isPubKeyInput(chunks)) {
    return 'pubkey'
  }

  return 'nonstandard'
}

// Standard Script Templates
// {pubKey} OP_CHECKSIG
function pubKeyOutput (pubKey) {
  return compile([pubKey, OPS.OP_CHECKSIG])
}

// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
function pubKeyHashOutput (pubKeyHash) {
  typeforce(types.Hash160bit, pubKeyHash)

  return compile([OPS.OP_DUP, OPS.OP_HASH160, pubKeyHash, OPS.OP_EQUALVERIFY, OPS.OP_CHECKSIG])
}

// OP_HASH160 {scriptHash} OP_EQUAL
function scriptHashOutput (scriptHash) {
  typeforce(types.Hash160bit, scriptHash)

  return compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL])
}

// m [pubKeys ...] n OP_CHECKMULTISIG
function multisigOutput (m, pubKeys) {
  typeforce(types.tuple(types.Number, [types.Buffer]), arguments)

  var n = pubKeys.length
  if (n < m) throw new Error('Not enough pubKeys provided')

  return compile([].concat(
    OP_INT_BASE + m,
    pubKeys,
    OP_INT_BASE + n,
    OPS.OP_CHECKMULTISIG
  ))
}

// {signature}
function pubKeyInput (signature) {
  typeforce(types.Buffer, signature)

  return compile([signature])
}

// {signature} {pubKey}
function pubKeyHashInput (signature, pubKey) {
  typeforce(types.tuple(types.Buffer, types.Buffer), arguments)

  return compile([signature, pubKey])
}

// <scriptSig> {serialized scriptPubKey script}
function scriptHashInput (scriptSig, scriptPubKey) {
  var scriptSigChunks = decompile(scriptSig)
  var serializedScriptPubKey = compile(scriptPubKey)

  return compile([].concat(
    scriptSigChunks,
    serializedScriptPubKey
  ))
}

// OP_0 [signatures ...]
function multisigInput (signatures, scriptPubKey) {
  if (scriptPubKey) {
    var chunks = decompile(scriptPubKey)
    if (!isMultisigOutput(chunks)) throw new Error('Expected multisig scriptPubKey')

    var mOp = chunks[0]
    var nOp = chunks[chunks.length - 2]
    var m = mOp - OP_INT_BASE
    var n = nOp - OP_INT_BASE

    if (signatures.length < m) throw new Error('Not enough signatures provided')
    if (signatures.length > n) throw new Error('Too many signatures provided')
  }

  return compile([].concat(OPS.OP_0, signatures))
}

function nullDataOutput (data) {
  return compile([OPS.OP_RETURN, data])
}

module.exports = {
  compile: compile,
  decompile: decompile,
  fromASM: fromASM,
  toASM: toASM,

  isCanonicalPubKey: isCanonicalPubKey,
  isCanonicalSignature: isCanonicalSignature,
  isDefinedHashType: isDefinedHashType,
  isPubKeyHashInput: isPubKeyHashInput,
  isPubKeyHashOutput: isPubKeyHashOutput,
  isPubKeyInput: isPubKeyInput,
  isPubKeyOutput: isPubKeyOutput,
  isScriptHashInput: isScriptHashInput,
  isScriptHashOutput: isScriptHashOutput,
  isMultisigInput: isMultisigInput,
  isMultisigOutput: isMultisigOutput,
  isNullDataOutput: isNullDataOutput,
  classifyOutput: classifyOutput,
  classifyInput: classifyInput,
  pubKeyOutput: pubKeyOutput,
  pubKeyHashOutput: pubKeyHashOutput,
  scriptHashOutput: scriptHashOutput,
  multisigOutput: multisigOutput,
  pubKeyInput: pubKeyInput,
  pubKeyHashInput: pubKeyHashInput,
  scriptHashInput: scriptHashInput,
  multisigInput: multisigInput,
  nullDataOutput: nullDataOutput
}

}).call(this,require("buffer").Buffer)
},{"./bufferutils":38,"./opcodes":47,"./types":51,"bip66":9,"buffer":177,"typeforce":34}],49:[function(require,module,exports){
(function (Buffer){
var bcrypto = require('./crypto')
var bscript = require('./script')
var bufferutils = require('./bufferutils')
var opcodes = require('./opcodes')
var typeforce = require('typeforce')
var types = require('./types')

function Transaction () {
  this.version = 1
  this.locktime = 0
  this.ins = []
  this.outs = []
}

Transaction.DEFAULT_SEQUENCE = 0xffffffff
Transaction.SIGHASH_ALL = 0x01
Transaction.SIGHASH_NONE = 0x02
Transaction.SIGHASH_SINGLE = 0x03
Transaction.SIGHASH_ANYONECANPAY = 0x80

Transaction.fromBuffer = function (buffer, __noStrict) {
  var offset = 0
  function readSlice (n) {
    offset += n
    return buffer.slice(offset - n, offset)
  }

  function readUInt32 () {
    var i = buffer.readUInt32LE(offset)
    offset += 4
    return i
  }

  function readUInt64 () {
    var i = bufferutils.readUInt64LE(buffer, offset)
    offset += 8
    return i
  }

  function readVarInt () {
    var vi = bufferutils.readVarInt(buffer, offset)
    offset += vi.size
    return vi.number
  }

  function readScript () {
    return readSlice(readVarInt())
  }

  var tx = new Transaction()
  tx.version = readUInt32()

  var vinLen = readVarInt()
  for (var i = 0; i < vinLen; ++i) {
    tx.ins.push({
      hash: readSlice(32),
      index: readUInt32(),
      script: readScript(),
      sequence: readUInt32()
    })
  }

  var voutLen = readVarInt()
  for (i = 0; i < voutLen; ++i) {
    tx.outs.push({
      value: readUInt64(),
      script: readScript()
    })
  }

  tx.locktime = readUInt32()

  if (__noStrict) return tx
  if (offset !== buffer.length) throw new Error('Transaction has unexpected data')

  return tx
}

Transaction.fromHex = function (hex) {
  return Transaction.fromBuffer(new Buffer(hex, 'hex'))
}

Transaction.isCoinbaseHash = function (buffer) {
  return Array.prototype.every.call(buffer, function (x) {
    return x === 0
  })
}

var EMPTY_SCRIPT = new Buffer(0)

Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) {
  typeforce(types.tuple(
    types.Hash256bit,
    types.UInt32,
    types.maybe(types.UInt32),
    types.maybe(types.Buffer)
  ), arguments)

  if (types.Null(sequence)) {
    sequence = Transaction.DEFAULT_SEQUENCE
  }

  // Add the input and return the input's index
  return (this.ins.push({
    hash: hash,
    index: index,
    script: scriptSig || EMPTY_SCRIPT,
    sequence: sequence
  }) - 1)
}

Transaction.prototype.addOutput = function (scriptPubKey, value) {
  typeforce(types.tuple(types.Buffer, types.UInt53), arguments)

  // Add the output and return the output's index
  return (this.outs.push({
    script: scriptPubKey,
    value: value
  }) - 1)
}

Transaction.prototype.byteLength = function () {
  function scriptSize (someScript) {
    var length = someScript.length

    return bufferutils.varIntSize(length) + length
  }

  return (
    8 +
    bufferutils.varIntSize(this.ins.length) +
    bufferutils.varIntSize(this.outs.length) +
    this.ins.reduce(function (sum, input) { return sum + 40 + scriptSize(input.script) }, 0) +
    this.outs.reduce(function (sum, output) { return sum + 8 + scriptSize(output.script) }, 0)
  )
}

Transaction.prototype.clone = function () {
  var newTx = new Transaction()
  newTx.version = this.version
  newTx.locktime = this.locktime

  newTx.ins = this.ins.map(function (txIn) {
    return {
      hash: txIn.hash,
      index: txIn.index,
      script: txIn.script,
      sequence: txIn.sequence
    }
  })

  newTx.outs = this.outs.map(function (txOut) {
    return {
      script: txOut.script,
      value: txOut.value
    }
  })

  return newTx
}

var ONE = new Buffer('0000000000000000000000000000000000000000000000000000000000000001', 'hex')
var VALUE_UINT64_MAX = new Buffer('ffffffffffffffff', 'hex')

/**
 * Hash transaction for signing a specific input.
 *
 * Bitcoin uses a different hash for each signed transaction input.
 * This method copies the transaction, makes the necessary changes based on the
 * hashType, and then hashes the result.
 * This hash can then be used to sign the provided transaction input.
 */
Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashType) {
  typeforce(types.tuple(types.UInt32, types.Buffer, /* types.UInt8 */ types.Number), arguments)

  // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L29
  if (inIndex >= this.ins.length) return ONE

  var txTmp = this.clone()

  // in case concatenating two scripts ends up with two codeseparators,
  // or an extra one at the end, this prevents all those possible incompatibilities.
  var hashScript = bscript.compile(bscript.decompile(prevOutScript).filter(function (x) {
    return x !== opcodes.OP_CODESEPARATOR
  }))
  var i

  // blank out other inputs' signatures
  txTmp.ins.forEach(function (input) { input.script = EMPTY_SCRIPT })
  txTmp.ins[inIndex].script = hashScript

  // blank out some of the inputs
  if ((hashType & 0x1f) === Transaction.SIGHASH_NONE) {
    // wildcard payee
    txTmp.outs = []

    // let the others update at will
    txTmp.ins.forEach(function (input, i) {
      if (i !== inIndex) {
        input.sequence = 0
      }
    })
  } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE) {
    var nOut = inIndex

    // only lock-in the txOut payee at same index as txIn
    // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L60
    if (nOut >= this.outs.length) return ONE

    txTmp.outs = txTmp.outs.slice(0, nOut + 1)

    // blank all other outputs (clear scriptPubKey, value === -1)
    var stubOut = {
      script: EMPTY_SCRIPT,
      valueBuffer: VALUE_UINT64_MAX
    }

    for (i = 0; i < nOut; i++) {
      txTmp.outs[i] = stubOut
    }

    // let the others update at will
    txTmp.ins.forEach(function (input, i) {
      if (i !== inIndex) {
        input.sequence = 0
      }
    })
  }

  // blank out other inputs completely, not recommended for open transactions
  if (hashType & Transaction.SIGHASH_ANYONECANPAY) {
    txTmp.ins[0] = txTmp.ins[inIndex]
    txTmp.ins = txTmp.ins.slice(0, 1)
  }

  // serialize and hash
  var buffer = new Buffer(txTmp.byteLength() + 4)
  buffer.writeInt32LE(hashType, buffer.length - 4)
  txTmp.toBuffer().copy(buffer, 0)

  return bcrypto.hash256(buffer)
}

Transaction.prototype.getHash = function () {
  return bcrypto.hash256(this.toBuffer())
}

Transaction.prototype.getId = function () {
  // transaction hash's are displayed in reverse order
  return [].reverse.call(this.getHash()).toString('hex')
}

Transaction.prototype.toBuffer = function () {
  var buffer = new Buffer(this.byteLength())

  var offset = 0
  function writeSlice (slice) {
    slice.copy(buffer, offset)
    offset += slice.length
  }

  function writeUInt32 (i) {
    buffer.writeUInt32LE(i, offset)
    offset += 4
  }

  function writeUInt64 (i) {
    bufferutils.writeUInt64LE(buffer, i, offset)
    offset += 8
  }

  function writeVarInt (i) {
    var n = bufferutils.writeVarInt(buffer, i, offset)
    offset += n
  }

  writeUInt32(this.version)
  writeVarInt(this.ins.length)

  this.ins.forEach(function (txIn) {
    writeSlice(txIn.hash)
    writeUInt32(txIn.index)
    writeVarInt(txIn.script.length)
    writeSlice(txIn.script)
    writeUInt32(txIn.sequence)
  })

  writeVarInt(this.outs.length)
  this.outs.forEach(function (txOut) {
    if (!txOut.valueBuffer) {
      writeUInt64(txOut.value)
    } else {
      writeSlice(txOut.valueBuffer)
    }

    writeVarInt(txOut.script.length)
    writeSlice(txOut.script)
  })

  writeUInt32(this.locktime)

  return buffer
}

Transaction.prototype.toHex = function () {
  return this.toBuffer().toString('hex')
}

Transaction.prototype.setInputScript = function (index, scriptSig) {
  typeforce(types.tuple(types.Number, types.Buffer), arguments)

  this.ins[index].script = scriptSig
}

module.exports = Transaction

}).call(this,require("buffer").Buffer)
},{"./bufferutils":38,"./crypto":39,"./opcodes":47,"./script":48,"./types":51,"buffer":177,"typeforce":34}],50:[function(require,module,exports){
(function (Buffer){
var baddress = require('./address')
var bcrypto = require('./crypto')
var bscript = require('./script')
var bufferEquals = require('buffer-equals')
var networks = require('./networks')
var ops = require('./opcodes')

var ECPair = require('./ecpair')
var ECSignature = require('./ecsignature')
var Transaction = require('./transaction')

// re-orders signatures to match pubKeys, fills undefined otherwise
function fixMSSignatures (transaction, vin, pubKeys, signatures, prevOutScript, hashType, skipPubKey) {
  // maintain a local copy of unmatched signatures
  var unmatched = signatures.slice()
  var cache = {}

  return pubKeys.map(function (pubKey) {
    // skip optionally provided pubKey
    if (skipPubKey && bufferEquals(skipPubKey, pubKey)) return undefined

    var matched
    var keyPair2 = ECPair.fromPublicKeyBuffer(pubKey)

    // check for a matching signature
    unmatched.some(function (signature, i) {
      // skip if undefined || OP_0
      if (!signature) return false

      var signatureHash = cache[hashType] = cache[hashType] || transaction.hashForSignature(vin, prevOutScript, hashType)
      if (!keyPair2.verify(signatureHash, signature)) return false

      // remove matched signature from unmatched
      unmatched[i] = undefined
      matched = signature

      return true
    })

    return matched || undefined
  })
}

function extractInput (transaction, txIn, vin) {
  var redeemScript
  var scriptSig = txIn.script
  var scriptSigChunks = bscript.decompile(scriptSig)

  var prevOutScript
  var prevOutType = bscript.classifyInput(scriptSig, true)
  var scriptType

  // Re-classify if scriptHash
  if (prevOutType === 'scripthash') {
    redeemScript = scriptSigChunks.slice(-1)[0]
    prevOutScript = bscript.scriptHashOutput(bcrypto.hash160(redeemScript))

    scriptSig = bscript.compile(scriptSigChunks.slice(0, -1))
    scriptSigChunks = scriptSigChunks.slice(0, -1)

    scriptType = bscript.classifyInput(scriptSig, true)
  } else {
    scriptType = prevOutType
  }

  // pre-empt redeemScript decompilation
  var redeemScriptChunks
  if (redeemScript) {
    redeemScriptChunks = bscript.decompile(redeemScript)
  }

  // Extract hashType, pubKeys and signatures
  var hashType, parsed, pubKeys, signatures

  switch (scriptType) {
    case 'pubkeyhash':
      parsed = ECSignature.parseScriptSignature(scriptSigChunks[0])
      hashType = parsed.hashType
      pubKeys = scriptSigChunks.slice(1)
      signatures = [parsed.signature]
      prevOutScript = bscript.pubKeyHashOutput(bcrypto.hash160(pubKeys[0]))

      break

    case 'pubkey':
      parsed = ECSignature.parseScriptSignature(scriptSigChunks[0])
      hashType = parsed.hashType
      signatures = [parsed.signature]

      if (redeemScript) {
        pubKeys = redeemScriptChunks.slice(0, 1)
      }

      break

    case 'multisig':
      signatures = scriptSigChunks.slice(1).map(function (chunk) {
        if (chunk === ops.OP_0) return undefined

        var parsed = ECSignature.parseScriptSignature(chunk)
        hashType = parsed.hashType

        return parsed.signature
      })

      if (redeemScript) {
        pubKeys = redeemScriptChunks.slice(1, -2)

        if (pubKeys.length !== signatures.length) {
          signatures = fixMSSignatures(transaction, vin, pubKeys, signatures, redeemScript, hashType, redeemScript)
        }
      }

      break
  }

  return {
    hashType: hashType,
    prevOutScript: prevOutScript,
    prevOutType: prevOutType,
    pubKeys: pubKeys,
    redeemScript: redeemScript,
    scriptType: scriptType,
    signatures: signatures
  }
}

function TransactionBuilder (network) {
  this.prevTxMap = {}
  this.prevOutScripts = {}
  this.prevOutTypes = {}
  this.network = network || networks.bitcoin

  this.inputs = []
  this.tx = new Transaction()
}

TransactionBuilder.fromTransaction = function (transaction, network) {
  var txb = new TransactionBuilder(network)

  // Copy other transaction fields
  txb.tx.version = transaction.version
  txb.tx.locktime = transaction.locktime

  // Extract/add inputs
  transaction.ins.forEach(function (txIn) {
    txb.addInput(txIn.hash, txIn.index, txIn.sequence)
  })

  // Extract/add outputs
  transaction.outs.forEach(function (txOut) {
    txb.addOutput(txOut.script, txOut.value)
  })

  // Extract/add signatures
  txb.inputs = transaction.ins.map(function (txIn, vin) {
    // TODO: verify whether extractInput is sane with coinbase scripts
    if (Transaction.isCoinbaseHash(txIn.hash)) {
      throw new Error('coinbase inputs not supported')
    }

    // Ignore empty scripts
    if (txIn.script.length === 0) return {}

    return extractInput(transaction, txIn, vin)
  })

  return txb
}

TransactionBuilder.prototype.addInput = function (txHash, vout, sequence, prevOutScript) {
  // is it a hex string?
  if (typeof txHash === 'string') {
    // transaction hashs's are displayed in reverse order, un-reverse it
    txHash = [].reverse.call(new Buffer(txHash, 'hex'))

  // is it a Transaction object?
  } else if (txHash instanceof Transaction) {
    prevOutScript = txHash.outs[vout].script
    txHash = txHash.getHash()
  }

  var input = {}
  if (prevOutScript) {
    var prevOutScriptChunks = bscript.decompile(prevOutScript)
    var prevOutType = bscript.classifyOutput(prevOutScriptChunks)

    // if we can, extract pubKey information
    switch (prevOutType) {
      case 'multisig':
        input.pubKeys = prevOutScriptChunks.slice(1, -2)
        input.signatures = input.pubKeys.map(function () { return undefined })

        break

      case 'pubkey':
        input.pubKeys = prevOutScriptChunks.slice(0, 1)
        input.signatures = [undefined]

        break
    }

    if (prevOutType !== 'scripthash') {
      input.scriptType = prevOutType
    }

    input.prevOutScript = prevOutScript
    input.prevOutType = prevOutType
  }

  var valid = this.inputs.every(function (input2) {
    if (input2.hashType === undefined) return true

    return input2.hashType & Transaction.SIGHASH_ANYONECANPAY
  })

  if (!valid) throw new Error('No, this would invalidate signatures')

  var prevOut = txHash.toString('hex') + ':' + vout
  if (this.prevTxMap[prevOut]) throw new Error('Transaction is already an input')

  var vin = this.tx.addInput(txHash, vout, sequence)
  this.inputs[vin] = input
  this.prevTxMap[prevOut] = vin

  return vin
}

TransactionBuilder.prototype.addOutput = function (scriptPubKey, value) {
  var tx = this.tx
  var valid = this.inputs.every(function (input, index) {
    if (input.hashType === undefined) return true

    var hashType = input.hashType & 0x1f
    return hashType === Transaction.SIGHASH_NONE ||
           (hashType === Transaction.SIGHASH_SINGLE && index < tx.outs.length)
  })

  if (!valid) throw new Error('No, this would invalidate signatures')

  // Attempt to get a script if it's a base58 address string
  if (typeof scriptPubKey === 'string') {
    scriptPubKey = baddress.toOutputScript(scriptPubKey, this.network)
  }

  return tx.addOutput(scriptPubKey, value)
}

TransactionBuilder.prototype.build = function () {
  return this.__build(false)
}
TransactionBuilder.prototype.buildIncomplete = function () {
  return this.__build(true)
}

var canBuildTypes = {
  'multisig': true,
  'pubkey': true,
  'pubkeyhash': true
}

TransactionBuilder.prototype.__build = function (allowIncomplete) {
  if (!allowIncomplete) {
    if (!this.tx.ins.length) throw new Error('Transaction has no inputs')
    if (!this.tx.outs.length) throw new Error('Transaction has no outputs')
  }

  var tx = this.tx.clone()

  // Create script signatures from inputs
  this.inputs.forEach(function (input, index) {
    var scriptType = input.scriptType
    var scriptSig

    if (!allowIncomplete) {
      if (!scriptType) throw new Error('Transaction is not complete')
      if (!canBuildTypes[scriptType]) throw new Error(scriptType + ' not supported')

      // XXX: only relevant to types that need signatures
      if (!input.signatures) throw new Error('Transaction is missing signatures')
    }

    if (input.signatures) {
      switch (scriptType) {
        case 'pubkeyhash':
          var pkhSignature = input.signatures[0].toScriptSignature(input.hashType)
          scriptSig = bscript.pubKeyHashInput(pkhSignature, input.pubKeys[0])
          break

        case 'multisig':
          var msSignatures = input.signatures.map(function (signature) {
            return signature && signature.toScriptSignature(input.hashType)
          })

          // fill in blanks with OP_0
          if (allowIncomplete) {
            for (var i = 0; i < msSignatures.length; ++i) {
              msSignatures[i] = msSignatures[i] || ops.OP_0
            }

          // remove blank signatures
          } else {
            msSignatures = msSignatures.filter(function (x) { return x })
          }

          var redeemScript = allowIncomplete ? undefined : input.redeemScript
          scriptSig = bscript.multisigInput(msSignatures, redeemScript)
          break

        case 'pubkey':
          var pkSignature = input.signatures[0].toScriptSignature(input.hashType)
          scriptSig = bscript.pubKeyInput(pkSignature)
          break
      }
    }

    // did we build a scriptSig?
    if (scriptSig) {
      // wrap as scriptHash if necessary
      if (input.prevOutType === 'scripthash') {
        scriptSig = bscript.scriptHashInput(scriptSig, input.redeemScript)
      }

      tx.setInputScript(index, scriptSig)
    }
  })

  return tx
}

TransactionBuilder.prototype.sign = function (index, keyPair, redeemScript, hashType) {
  if (keyPair.network !== this.network) throw new Error('Inconsistent network')
  if (!this.inputs[index]) throw new Error('No input at index: ' + index)
  hashType = hashType || Transaction.SIGHASH_ALL

  var input = this.inputs[index]
  var canSign = input.hashType &&
    input.prevOutScript &&
    input.prevOutType &&
    input.pubKeys &&
    input.scriptType &&
    input.signatures &&
    input.signatures.length === input.pubKeys.length

  var kpPubKey = keyPair.getPublicKeyBuffer()

  // are we ready to sign?
  if (canSign) {
    // if redeemScript was provided, enforce consistency
    if (redeemScript) {
      if (!bufferEquals(input.redeemScript, redeemScript)) throw new Error('Inconsistent redeemScript')
    }

    if (input.hashType !== hashType) throw new Error('Inconsistent hashType')

  // no? prepare
  } else {
    // must be pay-to-scriptHash?
    if (redeemScript) {
      // if we have a prevOutScript, enforce scriptHash equality to the redeemScript
      if (input.prevOutScript) {
        if (input.prevOutType !== 'scripthash') throw new Error('PrevOutScript must be P2SH')

        var scriptHash = bscript.decompile(input.prevOutScript)[1]
        if (!bufferEquals(scriptHash, bcrypto.hash160(redeemScript))) throw new Error('RedeemScript does not match ' + scriptHash.toString('hex'))
      }

      var scriptType = bscript.classifyOutput(redeemScript)
      var redeemScriptChunks = bscript.decompile(redeemScript)
      var pubKeys

      switch (scriptType) {
        case 'multisig':
          pubKeys = redeemScriptChunks.slice(1, -2)

          break

        case 'pubkeyhash':
          var pkh1 = redeemScriptChunks[2]
          var pkh2 = bcrypto.hash160(keyPair.getPublicKeyBuffer())

          if (!bufferEquals(pkh1, pkh2)) throw new Error('privateKey cannot sign for this input')
          pubKeys = [kpPubKey]

          break

        case 'pubkey':
          pubKeys = redeemScriptChunks.slice(0, 1)

          break

        default:
          throw new Error('RedeemScript not supported (' + scriptType + ')')
      }

      // if we don't have a prevOutScript, generate a P2SH script
      if (!input.prevOutScript) {
        input.prevOutScript = bscript.scriptHashOutput(bcrypto.hash160(redeemScript))
        input.prevOutType = 'scripthash'
      }

      input.pubKeys = pubKeys
      input.redeemScript = redeemScript
      input.scriptType = scriptType
      input.signatures = pubKeys.map(function () { return undefined })
    } else {
      // pay-to-scriptHash is not possible without a redeemScript
      if (input.prevOutType === 'scripthash') throw new Error('PrevOutScript is P2SH, missing redeemScript')

      // if we don't have a scriptType, assume pubKeyHash otherwise
      if (!input.scriptType) {
        input.prevOutScript = bscript.pubKeyHashOutput(bcrypto.hash160(keyPair.getPublicKeyBuffer()))
        input.prevOutType = 'pubkeyhash'
        input.pubKeys = [kpPubKey]
        input.scriptType = input.prevOutType
        input.signatures = [undefined]
      } else {
        // throw if we can't sign with it
        if (!input.pubKeys || !input.signatures) throw new Error(input.scriptType + ' not supported')
      }
    }

    input.hashType = hashType
  }

  // ready to sign?
  var signatureScript = input.redeemScript || input.prevOutScript
  var signatureHash = this.tx.hashForSignature(index, signatureScript, hashType)

  // enforce in order signing of public keys
  var valid = input.pubKeys.some(function (pubKey, i) {
    if (!bufferEquals(kpPubKey, pubKey)) return false
    if (input.signatures[i]) throw new Error('Signature already exists')

    var signature = keyPair.sign(signatureHash)
    input.signatures[i] = signature

    return true
  })

  if (!valid) throw new Error('Key pair cannot sign for this input')
}

module.exports = TransactionBuilder

}).call(this,require("buffer").Buffer)
},{"./address":36,"./crypto":39,"./ecpair":41,"./ecsignature":42,"./networks":46,"./opcodes":47,"./script":48,"./transaction":49,"buffer":177,"buffer-equals":12}],51:[function(require,module,exports){
var typeforce = require('typeforce')

function nBuffer (value, n) {
  typeforce(types.Buffer, value)
  if (value.length !== n) throw new Error('Expected ' + (n * 8) + '-bit Buffer, got ' + (value.length * 8) + '-bit Buffer')
  return true
}

function Hash160bit (value) { return nBuffer(value, 20) }
function Hash256bit (value) { return nBuffer(value, 32) }
function Buffer256bit (value) { return nBuffer(value, 32) }

var UINT53_MAX = Math.pow(2, 53) - 1
function UInt2 (value) { return (value & 3) === value }
function UInt8 (value) { return (value & 0xff) === value }
function UInt32 (value) { return (value >>> 0) === value }
function UInt53 (value) {
  return typeforce.Number(value) &&
    value >= 0 &&
    value <= UINT53_MAX &&
    Math.floor(value) === value
}

// external dependent types
var BigInt = typeforce.quacksLike('BigInteger')
var ECPoint = typeforce.quacksLike('Point')

// exposed, external API
var ECSignature = typeforce.compile({ r: BigInt, s: BigInt })
var Network = typeforce.compile({
  messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String),
  bip32: {
    public: UInt32,
    private: UInt32
  },
  pubKeyHash: UInt8,
  scriptHash: UInt8,
  wif: UInt8,
  dustThreshold: UInt53
})

// extend typeforce types with ours
var types = {
  BigInt: BigInt,
  Buffer256bit: Buffer256bit,
  ECPoint: ECPoint,
  ECSignature: ECSignature,
  Hash160bit: Hash160bit,
  Hash256bit: Hash256bit,
  Network: Network,
  UInt2: UInt2,
  UInt8: UInt8,
  UInt32: UInt32,
  UInt53: UInt53
}

for (var typeName in typeforce) {
  types[typeName] = typeforce[typeName]
}

module.exports = types

},{"typeforce":34}],52:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],53:[function(require,module,exports){
// Copyright 2010-2012 Mikeal Rogers
//
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//
//        http://www.apache.org/licenses/LICENSE-2.0
//
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.

'use strict'

var extend                = require('util')._extend
  , cookies               = require('./lib/cookies')
  , helpers               = require('./lib/helpers')

var isFunction            = helpers.isFunction
  , paramsHaveRequestBody = helpers.paramsHaveRequestBody


// organize params for patch, post, put, head, del
function initParams(uri, options, callback) {
  if (typeof options === 'function') {
    callback = options
  }

  var params = {}
  if (typeof options === 'object') {
    params = extend({}, options)
    params = extend(params, {uri: uri})
  } else if (typeof uri === 'string') {
    params = extend({}, {uri: uri})
  } else {
    params = extend({}, uri)
  }

  params.callback = callback
  return params
}

function request (uri, options, callback) {
  if (typeof uri === 'undefined') {
    throw new Error('undefined is not a valid uri or options object.')
  }

  var params = initParams(uri, options, callback)

  if (params.method === 'HEAD' && paramsHaveRequestBody(params)) {
    throw new Error('HTTP HEAD requests MUST NOT include a request body.')
  }

  return new request.Request(params)
}

var verbs = ['get', 'head', 'post', 'put', 'patch', 'del']

verbs.forEach(function(verb) {
  var method = verb === 'del' ? 'DELETE' : verb.toUpperCase()
  request[verb] = function (uri, options, callback) {
    var params = initParams(uri, options, callback)
    params.method = method
    return request(params, params.callback)
  }
})

request.jar = function (store) {
  return cookies.jar(store)
}

request.cookie = function (str) {
  return cookies.parse(str)
}

function wrapRequestMethod (method, options, requester) {

  return function (uri, opts, callback) {
    var params = initParams(uri, opts, callback)

    var headerlessOptions = extend({}, options)
    delete headerlessOptions.headers
    params = extend(headerlessOptions, params)

    if (options.headers) {
      var headers = extend({}, options.headers)
      params.headers = extend(headers, params.headers)
    }

    if (typeof method === 'string') {
      params.method = (method === 'del' ? 'DELETE' : method.toUpperCase())
      method = request[method]
    }

    if (isFunction(requester)) {
      method = requester
    }

    return method(params, params.callback)
  }
}

request.defaults = function (options, requester) {
  var self = this

  if (typeof options === 'function') {
    requester = options
    options = {}
  }

  var defaults      = wrapRequestMethod(self, options, requester)

  var verbs = ['get', 'head', 'post', 'put', 'patch', 'del']
  verbs.forEach(function(verb) {
    defaults[verb]  = wrapRequestMethod(verb, options, requester)
  })

  defaults.cookie   = wrapRequestMethod(self.cookie, options, requester)
  defaults.jar      = self.jar
  defaults.defaults = self.defaults
  return defaults
}

request.forever = function (agentOptions, optionsArg) {
  var options = {}
  if (optionsArg) {
    options = extend({}, optionsArg)
  }
  if (agentOptions) {
    options.agentOptions = agentOptions
  }

  options.forever = true
  return request.defaults(options)
}

// Exports

module.exports = request
request.Request = require('./request')
request.initParams = initParams

// Backwards compatibility for request.debug
Object.defineProperty(request, 'debug', {
  enumerable : true,
  get : function() {
    return request.Request.debug
  },
  set : function(debug) {
    request.Request.debug = debug
  }
})

},{"./lib/cookies":55,"./lib/helpers":59,"./request":138,"util":410}],54:[function(require,module,exports){
'use strict'

var caseless = require('caseless')
  , uuid = require('node-uuid')
  , helpers = require('./helpers')

var md5 = helpers.md5
  , toBase64 = helpers.toBase64


function Auth (request) {
  // define all public properties here
  this.request = request
  this.hasAuth = false
  this.sentAuth = false
  this.bearerToken = null
  this.user = null
  this.pass = null
}

Auth.prototype.basic = function (user, pass, sendImmediately) {
  var self = this
  if (typeof user !== 'string' || (pass !== undefined && typeof pass !== 'string')) {
    throw new Error('auth() received invalid user or password')
  }
  self.user = user
  self.pass = pass
  self.hasAuth = true
  var header = user + ':' + (pass || '')
  if (sendImmediately || typeof sendImmediately === 'undefined') {
    var authHeader = 'Basic ' + toBase64(header)
    self.sentAuth = true
    return authHeader
  }
}

Auth.prototype.bearer = function (bearer, sendImmediately) {
  var self = this
  self.bearerToken = bearer
  self.hasAuth = true
  if (sendImmediately || typeof sendImmediately === 'undefined') {
    if (typeof bearer === 'function') {
      bearer = bearer()
    }
    var authHeader = 'Bearer ' + (bearer || '')
    self.sentAuth = true
    return authHeader
  }
}

Auth.prototype.digest = function (method, path, authHeader) {
  // TODO: More complete implementation of RFC 2617.
  //   - check challenge.algorithm
  //   - support algorithm="MD5-sess"
  //   - handle challenge.domain
  //   - support qop="auth-int" only
  //   - handle Authentication-Info (not necessarily?)
  //   - check challenge.stale (not necessarily?)
  //   - increase nc (not necessarily?)
  // For reference:
  // http://tools.ietf.org/html/rfc2617#section-3
  // https://github.com/bagder/curl/blob/master/lib/http_digest.c

  var self = this

  var challenge = {}
  var re = /([a-z0-9_-]+)=(?:"([^"]+)"|([a-z0-9_-]+))/gi
  for (;;) {
    var match = re.exec(authHeader)
    if (!match) {
      break
    }
    challenge[match[1]] = match[2] || match[3]
  }

  var ha1 = md5(self.user + ':' + challenge.realm + ':' + self.pass)
  var ha2 = md5(method + ':' + path)
  var qop = /(^|,)\s*auth\s*($|,)/.test(challenge.qop) && 'auth'
  var nc = qop && '00000001'
  var cnonce = qop && uuid().replace(/-/g, '')
  var digestResponse = qop
    ? md5(ha1 + ':' + challenge.nonce + ':' + nc + ':' + cnonce + ':' + qop + ':' + ha2)
    : md5(ha1 + ':' + challenge.nonce + ':' + ha2)
  var authValues = {
    username: self.user,
    realm: challenge.realm,
    nonce: challenge.nonce,
    uri: path,
    qop: qop,
    response: digestResponse,
    nc: nc,
    cnonce: cnonce,
    algorithm: challenge.algorithm,
    opaque: challenge.opaque
  }

  authHeader = []
  for (var k in authValues) {
    if (authValues[k]) {
      if (k === 'qop' || k === 'nc' || k === 'algorithm') {
        authHeader.push(k + '=' + authValues[k])
      } else {
        authHeader.push(k + '="' + authValues[k] + '"')
      }
    }
  }
  authHeader = 'Digest ' + authHeader.join(', ')
  self.sentAuth = true
  return authHeader
}

Auth.prototype.onRequest = function (user, pass, sendImmediately, bearer) {
  var self = this
    , request = self.request

  var authHeader
  if (bearer === undefined && user === undefined) {
    throw new Error('no auth mechanism defined')
  } else if (bearer !== undefined) {
    authHeader = self.bearer(bearer, sendImmediately)
  } else {
    authHeader = self.basic(user, pass, sendImmediately)
  }
  if (authHeader) {
    request.setHeader('authorization', authHeader)
  }
}

Auth.prototype.onResponse = function (response) {
  var self = this
    , request = self.request

  if (!self.hasAuth || self.sentAuth) { return null }

  var c = caseless(response.headers)

  var authHeader = c.get('www-authenticate')
  var authVerb = authHeader && authHeader.split(' ')[0].toLowerCase()
  // debug('reauth', authVerb)

  switch (authVerb) {
    case 'basic':
      return self.basic(self.user, self.pass, true)

    case 'bearer':
      return self.bearer(self.bearerToken, true)

    case 'digest':
      return self.digest(request.method, request.path, authHeader)
  }
}

exports.Auth = Auth

},{"./helpers":59,"caseless":73,"node-uuid":125}],55:[function(require,module,exports){
'use strict'

var tough = require('tough-cookie')

var Cookie = tough.Cookie
  , CookieJar = tough.CookieJar


exports.parse = function(str) {
  if (str && str.uri) {
    str = str.uri
  }
  if (typeof str !== 'string') {
    throw new Error('The cookie function only accepts STRING as param')
  }
  return Cookie.parse(str)
}

// Adapt the sometimes-Async api of tough.CookieJar to our requirements
function RequestJar(store) {
  var self = this
  self._jar = new CookieJar(store)
}
RequestJar.prototype.setCookie = function(cookieOrStr, uri, options) {
  var self = this
  return self._jar.setCookieSync(cookieOrStr, uri, options || {})
}
RequestJar.prototype.getCookieString = function(uri) {
  var self = this
  return self._jar.getCookieStringSync(uri)
}
RequestJar.prototype.getCookies = function(uri) {
  var self = this
  return self._jar.getCookiesSync(uri)
}

exports.jar = function(store) {
  return new RequestJar(store)
}

},{"tough-cookie":133}],56:[function(require,module,exports){
'use strict'

module.exports =
function copy (obj) {
  var o = {}
  Object.keys(obj).forEach(function (i) {
    o[i] = obj[i]
  })
  return o
}

},{}],57:[function(require,module,exports){
(function (process){
'use strict'

function formatHostname(hostname) {
  // canonicalize the hostname, so that 'oogle.com' won't match 'google.com'
  return hostname.replace(/^\.*/, '.').toLowerCase()
}

function parseNoProxyZone(zone) {
  zone = zone.trim().toLowerCase()

  var zoneParts = zone.split(':', 2)
    , zoneHost = formatHostname(zoneParts[0])
    , zonePort = zoneParts[1]
    , hasPort = zone.indexOf(':') > -1

  return {hostname: zoneHost, port: zonePort, hasPort: hasPort}
}

function uriInNoProxy(uri, noProxy) {
  var port = uri.port || (uri.protocol === 'https:' ? '443' : '80')
    , hostname = formatHostname(uri.hostname)
    , noProxyList = noProxy.split(',')

  // iterate through the noProxyList until it finds a match.
  return noProxyList.map(parseNoProxyZone).some(function(noProxyZone) {
    var isMatchedAt = hostname.indexOf(noProxyZone.hostname)
      , hostnameMatched = (
          isMatchedAt > -1 &&
          (isMatchedAt === hostname.length - noProxyZone.hostname.length)
        )

    if (noProxyZone.hasPort) {
      return (port === noProxyZone.port) && hostnameMatched
    }

    return hostnameMatched
  })
}

function getProxyFromURI(uri) {
  // Decide the proper request proxy to use based on the request URI object and the
  // environmental variables (NO_PROXY, HTTP_PROXY, etc.)
  // respect NO_PROXY environment variables (see: http://lynx.isc.org/current/breakout/lynx_help/keystrokes/environments.html)

  var noProxy = process.env.NO_PROXY || process.env.no_proxy || ''

  // if the noProxy is a wildcard then return null

  if (noProxy === '*') {
    return null
  }

  // if the noProxy is not empty and the uri is found return null

  if (noProxy !== '' && uriInNoProxy(uri, noProxy)) {
    return null
  }

  // Check for HTTP or HTTPS Proxy in environment Else default to null

  if (uri.protocol === 'http:') {
    return process.env.HTTP_PROXY ||
           process.env.http_proxy || null
  }

  if (uri.protocol === 'https:') {
    return process.env.HTTPS_PROXY ||
           process.env.https_proxy ||
           process.env.HTTP_PROXY  ||
           process.env.http_proxy  || null
  }

  // if none of that works, return null
  // (What uri protocol are you using then?)

  return null
}

module.exports = getProxyFromURI

}).call(this,require('_process'))
},{"_process":381}],58:[function(require,module,exports){
'use strict'

var fs = require('fs')
var qs = require('querystring')
var validate = require('har-validator')
var util = require('util')

function Har (request) {
  this.request = request
}

Har.prototype.reducer = function (obj, pair) {
  // new property ?
  if (obj[pair.name] === undefined) {
    obj[pair.name] = pair.value
    return obj
  }

  // existing? convert to array
  var arr = [
    obj[pair.name],
    pair.value
  ]

  obj[pair.name] = arr

  return obj
}

Har.prototype.prep = function (data) {
  // construct utility properties
  data.queryObj = {}
  data.headersObj = {}
  data.postData.jsonObj = false
  data.postData.paramsObj = false

  // construct query objects
  if (data.queryString && data.queryString.length) {
    data.queryObj = data.queryString.reduce(this.reducer, {})
  }

  // construct headers objects
  if (data.headers && data.headers.length) {
    // loweCase header keys
    data.headersObj = data.headers.reduceRight(function (headers, header) {
      headers[header.name] = header.value
      return headers
    }, {})
  }

  // construct Cookie header
  if (data.cookies && data.cookies.length) {
    var cookies = data.cookies.map(function (cookie) {
      return cookie.name + '=' + cookie.value
    })

    if (cookies.length) {
      data.headersObj.cookie = cookies.join('; ')
    }
  }

  // prep body
  switch (data.postData.mimeType) {
    case 'multipart/mixed':
    case 'multipart/related':
    case 'multipart/form-data':
    case 'multipart/alternative':
      // reset values
      data.postData.mimeType = 'multipart/form-data'
      break

    case 'application/x-www-form-urlencoded':
      if (!data.postData.params) {
        data.postData.text = ''
      } else {
        data.postData.paramsObj = data.postData.params.reduce(this.reducer, {})

        // always overwrite
        data.postData.text = qs.stringify(data.postData.paramsObj)
      }
      break

    case 'text/json':
    case 'text/x-json':
    case 'application/json':
    case 'application/x-json':
      data.postData.mimeType = 'application/json'

      if (data.postData.text) {
        try {
          data.postData.jsonObj = JSON.parse(data.postData.text)
        } catch (e) {
          this.request.debug(e)

          // force back to text/plain
          data.postData.mimeType = 'text/plain'
        }
      }
      break
  }

  return data
}

Har.prototype.options = function (options) {
  // skip if no har property defined
  if (!options.har) {
    return options
  }

  var har = util._extend({}, options.har)

  // only process the first entry
  if (har.log && har.log.entries) {
    har = har.log.entries[0]
  }

  // add optional properties to make validation successful
  har.url = har.url || options.url || options.uri || options.baseUrl || '/'
  har.httpVersion = har.httpVersion || 'HTTP/1.1'
  har.queryString = har.queryString || []
  har.headers = har.headers || []
  har.cookies = har.cookies || []
  har.postData = har.postData || {}
  har.postData.mimeType = har.postData.mimeType || 'application/octet-stream'

  har.bodySize = 0
  har.headersSize = 0
  har.postData.size = 0

  if (!validate.request(har)) {
    return options
  }

  // clean up and get some utility properties
  var req = this.prep(har)

  // construct new options
  if (req.url) {
    options.url = req.url
  }

  if (req.method) {
    options.method = req.method
  }

  if (Object.keys(req.queryObj).length) {
    options.qs = req.queryObj
  }

  if (Object.keys(req.headersObj).length) {
    options.headers = req.headersObj
  }

  switch (req.postData.mimeType) {
    case 'application/x-www-form-urlencoded':
      options.form = req.postData.paramsObj
      break

    case 'application/json':
      if (req.postData.jsonObj) {
        options.body = req.postData.jsonObj
        options.json = true
      }
      break

    case 'multipart/form-data':
      options.formData = {}

      req.postData.params.forEach(function (param) {
        var attachment = {}

        if (!param.fileName && !param.fileName && !param.contentType) {
          options.formData[param.name] = param.value
          return
        }

        // attempt to read from disk!
        if (param.fileName && !param.value) {
          attachment.value = fs.createReadStream(param.fileName)
        } else if (param.value) {
          attachment.value = param.value
        }

        if (param.fileName) {
          attachment.options = {
            filename: param.fileName,
            contentType: param.contentType ? param.contentType : null
          }
        }

        options.formData[param.name] = attachment
      })
      break

    default:
      if (req.postData.text) {
        options.body = req.postData.text
      }
  }

  return options
}

exports.Har = Har

},{"fs":161,"har-validator":87,"querystring":385,"util":410}],59:[function(require,module,exports){
(function (process,Buffer){
'use strict'

var jsonSafeStringify = require('json-stringify-safe')
  , crypto = require('crypto')

function deferMethod() {
  if(typeof setImmediate === 'undefined') {
    return process.nextTick
  }

  return setImmediate
}

function isFunction(value) {
  return typeof value === 'function'
}

function paramsHaveRequestBody(params) {
  return (
    params.body ||
    params.requestBodyStream ||
    (params.json && typeof params.json !== 'boolean') ||
    params.multipart
  )
}

function safeStringify (obj) {
  var ret
  try {
    ret = JSON.stringify(obj)
  } catch (e) {
    ret = jsonSafeStringify(obj)
  }
  return ret
}

function md5 (str) {
  return crypto.createHash('md5').update(str).digest('hex')
}

function isReadStream (rs) {
  return rs.readable && rs.path && rs.mode
}

function toBase64 (str) {
  return (new Buffer(str || '', 'utf8')).toString('base64')
}

exports.isFunction            = isFunction
exports.paramsHaveRequestBody = paramsHaveRequestBody
exports.safeStringify         = safeStringify
exports.md5                   = md5
exports.isReadStream          = isReadStream
exports.toBase64              = toBase64
exports.defer                 = deferMethod()

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":381,"buffer":177,"crypto":183,"json-stringify-safe":121}],60:[function(require,module,exports){
(function (Buffer){
'use strict'

var uuid = require('node-uuid')
  , CombinedStream = require('combined-stream')
  , isstream = require('isstream')


function Multipart (request) {
  this.request = request
  this.boundary = uuid()
  this.chunked = false
  this.body = null
}

Multipart.prototype.isChunked = function (options) {
  var self = this
    , chunked = false
    , parts = options.data || options

  if (!parts.forEach) {
    throw new Error('Argument error, options.multipart.')
  }

  if (options.chunked !== undefined) {
    chunked = options.chunked
  }

  if (self.request.getHeader('transfer-encoding') === 'chunked') {
    chunked = true
  }

  if (!chunked) {
    parts.forEach(function (part) {
      if(typeof part.body === 'undefined') {
        throw new Error('Body attribute missing in multipart.')
      }
      if (isstream(part.body)) {
        chunked = true
      }
    })
  }

  return chunked
}

Multipart.prototype.setHeaders = function (chunked) {
  var self = this

  if (chunked && !self.request.hasHeader('transfer-encoding')) {
    self.request.setHeader('transfer-encoding', 'chunked')
  }

  var header = self.request.getHeader('content-type')

  if (!header || header.indexOf('multipart') === -1) {
    self.request.setHeader('content-type', 'multipart/related; boundary=' + self.boundary)
  } else {
    if (header.indexOf('boundary') !== -1) {
      self.boundary = header.replace(/.*boundary=([^\s;]+).*/, '$1')
    } else {
      self.request.setHeader('content-type', header + '; boundary=' + self.boundary)
    }
  }
}

Multipart.prototype.build = function (parts, chunked) {
  var self = this
  var body = chunked ? new CombinedStream() : []

  function add (part) {
    return chunked ? body.append(part) : body.push(new Buffer(part))
  }

  if (self.request.preambleCRLF) {
    add('\r\n')
  }

  parts.forEach(function (part) {
    var preamble = '--' + self.boundary + '\r\n'
    Object.keys(part).forEach(function (key) {
      if (key === 'body') { return }
      preamble += key + ': ' + part[key] + '\r\n'
    })
    preamble += '\r\n'
    add(preamble)
    add(part.body)
    add('\r\n')
  })
  add('--' + self.boundary + '--')

  if (self.request.postambleCRLF) {
    add('\r\n')
  }

  return body
}

Multipart.prototype.onRequest = function (options) {
  var self = this

  var chunked = self.isChunked(options)
    , parts = options.data || options

  self.setHeaders(chunked)
  self.chunked = chunked
  self.body = self.build(parts, chunked)
}

exports.Multipart = Multipart

}).call(this,require("buffer").Buffer)
},{"buffer":177,"combined-stream":74,"isstream":120,"node-uuid":125}],61:[function(require,module,exports){
'use strict'

var qs = require('qs')
  , caseless = require('caseless')
  , uuid = require('node-uuid')
  , oauth = require('oauth-sign')


function OAuth (request) {
  this.request = request
}

OAuth.prototype.buildParams = function (_oauth, uri, method, query, form, qsLib) {
  var oa = {}
  for (var i in _oauth) {
    oa['oauth_' + i] = _oauth[i]
  }
  if (!oa.oauth_version) {
    oa.oauth_version = '1.0'
  }
  if (!oa.oauth_timestamp) {
    oa.oauth_timestamp = Math.floor( Date.now() / 1000 ).toString()
  }
  if (!oa.oauth_nonce) {
    oa.oauth_nonce = uuid().replace(/-/g, '')
  }
  if (!oa.oauth_signature_method) {
    oa.oauth_signature_method = 'HMAC-SHA1'
  }

  var consumer_secret_or_private_key = oa.oauth_consumer_secret || oa.oauth_private_key
  delete oa.oauth_consumer_secret
  delete oa.oauth_private_key

  var token_secret = oa.oauth_token_secret
  delete oa.oauth_token_secret

  var realm = oa.oauth_realm
  delete oa.oauth_realm
  delete oa.oauth_transport_method

  var baseurl = uri.protocol + '//' + uri.host + uri.pathname
  var params = qsLib.parse([].concat(query, form, qsLib.stringify(oa)).join('&'))

  oa.oauth_signature = oauth.sign(
    oa.oauth_signature_method,
    method,
    baseurl,
    params,
    consumer_secret_or_private_key,
    token_secret)

  if (realm) {
    oa.realm = realm
  }

  return oa
}

OAuth.prototype.concatParams = function (oa, sep, wrap) {
  wrap = wrap || ''

  var params = Object.keys(oa).filter(function (i) {
    return i !== 'realm' && i !== 'oauth_signature'
  }).sort()

  if (oa.realm) {
    params.splice(0, 1, 'realm')
  }
  params.push('oauth_signature')

  return params.map(function (i) {
    return i + '=' + wrap + oauth.rfc3986(oa[i]) + wrap
  }).join(sep)
}

OAuth.prototype.onRequest = function (_oauth) {
  var self = this
    , request = self.request

  var uri = request.uri || {}
    , method = request.method || ''
    , headers = caseless(request.headers)
    , body = request.body || ''
    , qsLib = request.qsLib || qs

  var form
    , query
    , contentType = headers.get('content-type') || ''
    , formContentType = 'application/x-www-form-urlencoded'
    , transport = _oauth.transport_method || 'header'

  if (contentType.slice(0, formContentType.length) === formContentType) {
    contentType = formContentType
    form = body
  }
  if (uri.query) {
    query = uri.query
  }
  if (transport === 'body' && (method !== 'POST' || contentType !== formContentType)) {
    throw new Error('oauth: transport_method of \'body\' requires \'POST\' ' +
      'and content-type \'' + formContentType + '\'')
  }

  var oa = this.buildParams(_oauth, uri, method, query, form, qsLib)

  switch (transport) {
    case 'header':
      request.setHeader('Authorization', 'OAuth ' + this.concatParams(oa, ',', '"'))
      break

    case 'query':
      request.path = (query ? '&' : '?') + this.concatParams(oa, '&')
      break

    case 'body':
      request.body = (form ? form + '&' : '') + this.concatParams(oa, '&')
      break

    default:
      throw new Error('oauth: transport_method invalid')
  }
}

exports.OAuth = OAuth

},{"caseless":73,"node-uuid":125,"oauth-sign":126,"qs":127}],62:[function(require,module,exports){
'use strict'

var url = require('url')
var isUrl = /^https?:/

function Redirect (request) {
  this.request = request
  this.followRedirect = true
  this.followRedirects = true
  this.followAllRedirects = false
  this.allowRedirect = function () {return true}
  this.maxRedirects = 10
  this.redirects = []
  this.redirectsFollowed = 0
  this.removeRefererHeader = false
}

Redirect.prototype.onRequest = function () {
  var self = this
    , request = self.request

  if (request.maxRedirects !== undefined) {
    self.maxRedirects = request.maxRedirects
  }
  if (typeof request.followRedirect === 'function') {
    self.allowRedirect = request.followRedirect
  }
  if (request.followRedirect !== undefined) {
    self.followRedirects = !!request.followRedirect
  }
  if (request.followAllRedirects !== undefined) {
    self.followAllRedirects = request.followAllRedirects
  }
  if (self.followRedirects || self.followAllRedirects) {
    self.redirects = self.redirects || []
  }
  if (request.removeRefererHeader !== undefined) {
    self.removeRefererHeader = request.removeRefererHeader
  }
}

Redirect.prototype.redirectTo = function (response) {
  var self = this
    , request = self.request

  var redirectTo = null
  if (response.statusCode >= 300 && response.statusCode < 400 && response.caseless.has('location')) {
    var location = response.caseless.get('location')
    // debug('redirect', location)

    if (self.followAllRedirects) {
      redirectTo = location
    } else if (self.followRedirects) {
      switch (request.method) {
        case 'PATCH':
        case 'PUT':
        case 'POST':
        case 'DELETE':
          // Do not follow redirects
          break
        default:
          redirectTo = location
          break
      }
    }
  } else if (response.statusCode === 401) {
    var authHeader = request._auth.onResponse(response)
    if (authHeader) {
      request.setHeader('authorization', authHeader)
      redirectTo = request.uri
    }
  }
  return redirectTo
}

Redirect.prototype.onResponse = function (response) {
  var self = this
    , request = self.request

  var redirectTo = self.redirectTo(response)
  if (!redirectTo || !self.allowRedirect.call(request, response)) {
    return false
  }


  // debug('redirect to', redirectTo)

  // ignore any potential response body.  it cannot possibly be useful
  // to us at this point.
  if (request._paused) {
    response.resume()
  }

  if (self.redirectsFollowed >= self.maxRedirects) {
    request.emit('error', new Error('Exceeded maxRedirects. Probably stuck in a redirect loop ' + request.uri.href))
    return false
  }
  self.redirectsFollowed += 1

  if (!isUrl.test(redirectTo)) {
    redirectTo = url.resolve(request.uri.href, redirectTo)
  }

  var uriPrev = request.uri
  request.uri = url.parse(redirectTo)

  // handle the case where we change protocol from https to http or vice versa
  if (request.uri.protocol !== uriPrev.protocol) {
    request._updateProtocol()
  }

  self.redirects.push(
    { statusCode : response.statusCode
    , redirectUri: redirectTo
    }
  )
  if (self.followAllRedirects && response.statusCode !== 401 && response.statusCode !== 307) {
    request.method = 'GET'
  }
  // request.method = 'GET' // Force all redirects to use GET || commented out fixes #215
  delete request.src
  delete request.req
  delete request.agent
  delete request._started
  if (response.statusCode !== 401 && response.statusCode !== 307) {
    // Remove parameters from the previous response, unless this is the second request
    // for a server that requires digest authentication.
    delete request.body
    delete request._form
    if (request.headers) {
      request.removeHeader('host')
      request.removeHeader('content-type')
      request.removeHeader('content-length')
      if (request.uri.hostname !== request.originalHost.split(':')[0]) {
        // Remove authorization if changing hostnames (but not if just
        // changing ports or protocols).  This matches the behavior of curl:
        // https://github.com/bagder/curl/blob/6beb0eee/lib/http.c#L710
        request.removeHeader('authorization')
      }
    }
  }

  if (!self.removeRefererHeader) {
    request.setHeader('referer', request.uri.href)
  }

  request.emit('redirect')

  request.init()

  return true
}

exports.Redirect = Redirect

},{"url":407}],63:[function(require,module,exports){

/*!
 * knox - auth
 * Copyright(c) 2010 LearnBoost <dev@learnboost.com>
 * MIT Licensed
 */

/**
 * Module dependencies.
 */

var crypto = require('crypto')
  , parse = require('url').parse
  ;

/**
 * Valid keys.
 */

var keys = 
  [ 'acl'
  , 'location'
  , 'logging'
  , 'notification'
  , 'partNumber'
  , 'policy'
  , 'requestPayment'
  , 'torrent'
  , 'uploadId'
  , 'uploads'
  , 'versionId'
  , 'versioning'
  , 'versions'
  , 'website'
  ]

/**
 * Return an "Authorization" header value with the given `options`
 * in the form of "AWS <key>:<signature>"
 *
 * @param {Object} options
 * @return {String}
 * @api private
 */

function authorization (options) {
  return 'AWS ' + options.key + ':' + sign(options)
}

module.exports = authorization
module.exports.authorization = authorization

/**
 * Simple HMAC-SHA1 Wrapper
 *
 * @param {Object} options
 * @return {String}
 * @api private
 */ 

function hmacSha1 (options) {
  return crypto.createHmac('sha1', options.secret).update(options.message).digest('base64')
}

module.exports.hmacSha1 = hmacSha1

/**
 * Create a base64 sha1 HMAC for `options`. 
 * 
 * @param {Object} options
 * @return {String}
 * @api private
 */

function sign (options) {
  options.message = stringToSign(options)
  return hmacSha1(options)
}
module.exports.sign = sign

/**
 * Create a base64 sha1 HMAC for `options`. 
 *
 * Specifically to be used with S3 presigned URLs
 * 
 * @param {Object} options
 * @return {String}
 * @api private
 */

function signQuery (options) {
  options.message = queryStringToSign(options)
  return hmacSha1(options)
}
module.exports.signQuery= signQuery

/**
 * Return a string for sign() with the given `options`.
 *
 * Spec:
 * 
 *    <verb>\n
 *    <md5>\n
 *    <content-type>\n
 *    <date>\n
 *    [headers\n]
 *    <resource>
 *
 * @param {Object} options
 * @return {String}
 * @api private
 */

function stringToSign (options) {
  var headers = options.amazonHeaders || ''
  if (headers) headers += '\n'
  var r = 
    [ options.verb
    , options.md5
    , options.contentType
    , options.date ? options.date.toUTCString() : ''
    , headers + options.resource
    ]
  return r.join('\n')
}
module.exports.queryStringToSign = stringToSign

/**
 * Return a string for sign() with the given `options`, but is meant exclusively
 * for S3 presigned URLs
 *
 * Spec:
 * 
 *    <date>\n
 *    <resource>
 *
 * @param {Object} options
 * @return {String}
 * @api private
 */

function queryStringToSign (options){
  return 'GET\n\n\n' + options.date + '\n' + options.resource
}
module.exports.queryStringToSign = queryStringToSign

/**
 * Perform the following:
 *
 *  - ignore non-amazon headers
 *  - lowercase fields
 *  - sort lexicographically
 *  - trim whitespace between ":"
 *  - join with newline
 *
 * @param {Object} headers
 * @return {String}
 * @api private
 */

function canonicalizeHeaders (headers) {
  var buf = []
    , fields = Object.keys(headers)
    ;
  for (var i = 0, len = fields.length; i < len; ++i) {
    var field = fields[i]
      , val = headers[field]
      , field = field.toLowerCase()
      ;
    if (0 !== field.indexOf('x-amz')) continue
    buf.push(field + ':' + val)
  }
  return buf.sort().join('\n')
}
module.exports.canonicalizeHeaders = canonicalizeHeaders

/**
 * Perform the following:
 *
 *  - ignore non sub-resources
 *  - sort lexicographically
 *
 * @param {String} resource
 * @return {String}
 * @api private
 */

function canonicalizeResource (resource) {
  var url = parse(resource, true)
    , path = url.pathname
    , buf = []
    ;

  Object.keys(url.query).forEach(function(key){
    if (!~keys.indexOf(key)) return
    var val = '' == url.query[key] ? '' : '=' + encodeURIComponent(url.query[key])
    buf.push(key + val)
  })

  return path + (buf.length ? '?' + buf.sort().join('&') : '')
}
module.exports.canonicalizeResource = canonicalizeResource

},{"crypto":183,"url":407}],64:[function(require,module,exports){
(function (Buffer){
var DuplexStream = require('readable-stream/duplex')
  , util         = require('util')

function BufferList (callback) {
  if (!(this instanceof BufferList))
    return new BufferList(callback)

  this._bufs  = []
  this.length = 0

  if (typeof callback == 'function') {
    this._callback = callback

    var piper = function (err) {
      if (this._callback) {
        this._callback(err)
        this._callback = null
      }
    }.bind(this)

    this.on('pipe', function (src) {
      src.on('error', piper)
    })
    this.on('unpipe', function (src) {
      src.removeListener('error', piper)
    })
  }
  else if (Buffer.isBuffer(callback))
    this.append(callback)
  else if (Array.isArray(callback)) {
    callback.forEach(function (b) {
      Buffer.isBuffer(b) && this.append(b)
    }.bind(this))
  }

  DuplexStream.call(this)
}

util.inherits(BufferList, DuplexStream)

BufferList.prototype._offset = function (offset) {
  var tot = 0, i = 0, _t
  for (; i < this._bufs.length; i++) {
    _t = tot + this._bufs[i].length
    if (offset < _t)
      return [ i, offset - tot ]
    tot = _t
  }
}

BufferList.prototype.append = function (buf) {
  var isBuffer = Buffer.isBuffer(buf) ||
                 buf instanceof BufferList

  this._bufs.push(isBuffer ? buf : new Buffer(buf))
  this.length += buf.length
  return this
}

BufferList.prototype._write = function (buf, encoding, callback) {
  this.append(buf)
  if (callback)
    callback()
}

BufferList.prototype._read = function (size) {
  if (!this.length)
    return this.push(null)
  size = Math.min(size, this.length)
  this.push(this.slice(0, size))
  this.consume(size)
}

BufferList.prototype.end = function (chunk) {
  DuplexStream.prototype.end.call(this, chunk)

  if (this._callback) {
    this._callback(null, this.slice())
    this._callback = null
  }
}

BufferList.prototype.get = function (index) {
  return this.slice(index, index + 1)[0]
}

BufferList.prototype.slice = function (start, end) {
  return this.copy(null, 0, start, end)
}

BufferList.prototype.copy = function (dst, dstStart, srcStart, srcEnd) {
  if (typeof srcStart != 'number' || srcStart < 0)
    srcStart = 0
  if (typeof srcEnd != 'number' || srcEnd > this.length)
    srcEnd = this.length
  if (srcStart >= this.length)
    return dst || new Buffer(0)
  if (srcEnd <= 0)
    return dst || new Buffer(0)

  var copy   = !!dst
    , off    = this._offset(srcStart)
    , len    = srcEnd - srcStart
    , bytes  = len
    , bufoff = (copy && dstStart) || 0
    , start  = off[1]
    , l
    , i

  // copy/slice everything
  if (srcStart === 0 && srcEnd == this.length) {
    if (!copy) // slice, just return a full concat
      return Buffer.concat(this._bufs)

    // copy, need to copy individual buffers
    for (i = 0; i < this._bufs.length; i++) {
      this._bufs[i].copy(dst, bufoff)
      bufoff += this._bufs[i].length
    }

    return dst
  }

  // easy, cheap case where it's a subset of one of the buffers
  if (bytes <= this._bufs[off[0]].length - start) {
    return copy
      ? this._bufs[off[0]].copy(dst, dstStart, start, start + bytes)
      : this._bufs[off[0]].slice(start, start + bytes)
  }

  if (!copy) // a slice, we need something to copy in to
    dst = new Buffer(len)

  for (i = off[0]; i < this._bufs.length; i++) {
    l = this._bufs[i].length - start

    if (bytes > l) {
      this._bufs[i].copy(dst, bufoff, start)
    } else {
      this._bufs[i].copy(dst, bufoff, start, start + bytes)
      break
    }

    bufoff += l
    bytes -= l

    if (start)
      start = 0
  }

  return dst
}

BufferList.prototype.toString = function (encoding, start, end) {
  return this.slice(start, end).toString(encoding)
}

BufferList.prototype.consume = function (bytes) {
  while (this._bufs.length) {
    if (bytes > this._bufs[0].length) {
      bytes -= this._bufs[0].length
      this.length -= this._bufs[0].length
      this._bufs.shift()
    } else {
      this._bufs[0] = this._bufs[0].slice(bytes)
      this.length -= bytes
      break
    }
  }
  return this
}

BufferList.prototype.duplicate = function () {
  var i = 0
    , copy = new BufferList()

  for (; i < this._bufs.length; i++)
    copy.append(this._bufs[i])

  return copy
}

BufferList.prototype.destroy = function () {
  this._bufs.length = 0;
  this.length = 0;
  this.push(null);
}

;(function () {
  var methods = {
      'readDoubleBE' : 8
    , 'readDoubleLE' : 8
    , 'readFloatBE'  : 4
    , 'readFloatLE'  : 4
    , 'readInt32BE'  : 4
    , 'readInt32LE'  : 4
    , 'readUInt32BE' : 4
    , 'readUInt32LE' : 4
    , 'readInt16BE'  : 2
    , 'readInt16LE'  : 2
    , 'readUInt16BE' : 2
    , 'readUInt16LE' : 2
    , 'readInt8'     : 1
    , 'readUInt8'    : 1
  }

  for (var m in methods) {
    (function (m) {
      BufferList.prototype[m] = function (offset) {
        return this.slice(offset, offset + methods[m])[m](0)
      }
    }(m))
  }
}())

module.exports = BufferList

}).call(this,require("buffer").Buffer)
},{"buffer":177,"readable-stream/duplex":65,"util":410}],65:[function(require,module,exports){
module.exports = require("./lib/_stream_duplex.js")

},{"./lib/_stream_duplex.js":66}],66:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

module.exports = Duplex;

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

forEach(objectKeys(Writable.prototype), function(method) {
  if (!Duplex.prototype[method])
    Duplex.prototype[method] = Writable.prototype[method];
});

function Duplex(options) {
  if (!(this instanceof Duplex))
    return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false)
    this.readable = false;

  if (options && options.writable === false)
    this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false)
    this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended)
    return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  process.nextTick(this.end.bind(this));
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

}).call(this,require('_process'))
},{"./_stream_readable":67,"./_stream_writable":68,"_process":381,"core-util-is":69,"inherits":70}],67:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events').EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require('stream');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var StringDecoder;

util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  options = options || {};

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = false;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // In streams that never have any data, and do push(null) right away,
  // the consumer can miss the 'end' event if they do some I/O before
  // consuming the stream.  So, we don't emit('end') until some reading
  // happens.
  this.calledRead = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;


  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (typeof chunk === 'string' && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null || chunk === undefined) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      // update the buffer info.
      state.length += state.objectMode ? 1 : chunk.length;
      if (addToFront) {
        state.buffer.unshift(chunk);
      } else {
        state.reading = false;
        state.buffer.push(chunk);
      }

      if (state.needReadable)
        emitReadable(stream);

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  var state = this._readableState;
  state.calledRead = true;
  var nOrig = n;
  var ret;

  if (typeof n !== 'number' || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    ret = null;

    // In cases where the decoder did not receive enough data
    // to produce a full chunk, then immediately received an
    // EOF, state.buffer will contain [<Buffer >, <Buffer 00 ...>].
    // howMuchToRead will see this and coerce the amount to
    // read to zero (because it's looking at the length of the
    // first <Buffer > in state.buffer), and we'll end up here.
    //
    // This can only happen via state.decoder -- no other venue
    // exists for pushing a zero-length chunk into state.buffer
    // and triggering this behavior. In this case, we return our
    // remaining data and end the stream, if appropriate.
    if (state.length > 0 && state.decoder) {
      ret = fromList(n, state);
      state.length -= ret.length;
    }

    if (state.length === 0)
      endReadable(this);

    return ret;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;

  // if we currently have less than the highWaterMark, then also read some
  if (state.length - n <= state.highWaterMark)
    doRead = true;

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading)
    doRead = false;

  if (doRead) {
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read called its callback synchronously, then `reading`
  // will be false, and we need to re-evaluate how much data we
  // can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we happened to read() exactly the remaining amount in the
  // buffer, and the EOF has been seen at this point, then make sure
  // that we emit 'end' on the very next tick.
  if (state.ended && !state.endEmitted && state.length === 0)
    endReadable(this);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // if we've ended and we have some data left, then emit
  // 'readable' now to make sure it gets picked up.
  if (state.length > 0)
    emitReadable(stream);
  else
    endReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (state.emittedReadable)
    return;

  state.emittedReadable = true;
  if (state.sync)
    process.nextTick(function() {
      emitReadable_(stream);
    });
  else
    emitReadable_(stream);
}

function emitReadable_(stream) {
  stream.emit('readable');
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    if (readable !== src) return;
    cleanup();
  }

  function onend() {
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  function cleanup() {
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (!dest._writableState || dest._writableState.needDrain)
      ondrain();
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    // the handler that waits for readable events after all
    // the data gets sucked out in flow.
    // This would be easier to follow with a .once() handler
    // in flow(), but that is too slow.
    this.on('readable', pipeOnReadable);

    state.flowing = true;
    process.nextTick(function() {
      flow(src);
    });
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var dest = this;
    var state = src._readableState;
    state.awaitDrain--;
    if (state.awaitDrain === 0)
      flow(src);
  };
}

function flow(src) {
  var state = src._readableState;
  var chunk;
  state.awaitDrain = 0;

  function write(dest, i, list) {
    var written = dest.write(chunk);
    if (false === written) {
      state.awaitDrain++;
    }
  }

  while (state.pipesCount && null !== (chunk = src.read())) {

    if (state.pipesCount === 1)
      write(state.pipes, 0, null);
    else
      forEach(state.pipes, write);

    src.emit('data', chunk);

    // if anyone needs a drain, then we have to wait for that.
    if (state.awaitDrain > 0)
      return;
  }

  // if every destination was unpiped, either before entering this
  // function, or in the while loop, then stop flowing.
  //
  // NB: This is a pretty rare edge case.
  if (state.pipesCount === 0) {
    state.flowing = false;

    // if there were data event listeners added, then switch to old mode.
    if (EE.listenerCount(src, 'data') > 0)
      emitDataEvents(src);
    return;
  }

  // at this point, no one needed a drain, so we just ran out of data
  // on the next readable event, start it over again.
  state.ranOut = true;
}

function pipeOnReadable() {
  if (this._readableState.ranOut) {
    this._readableState.ranOut = false;
    flow(this);
  }
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data' && !this._readableState.flowing)
    emitDataEvents(this);

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        this.read(0);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  emitDataEvents(this);
  this.read(0);
  this.emit('resume');
};

Readable.prototype.pause = function() {
  emitDataEvents(this, true);
  this.emit('pause');
};

function emitDataEvents(stream, startPaused) {
  var state = stream._readableState;

  if (state.flowing) {
    // https://github.com/isaacs/readable-stream/issues/16
    throw new Error('Cannot switch to old mode now.');
  }

  var paused = startPaused || false;
  var readable = false;

  // convert to an old-style stream.
  stream.readable = true;
  stream.pipe = Stream.prototype.pipe;
  stream.on = stream.addListener = Stream.prototype.on;

  stream.on('readable', function() {
    readable = true;

    var c;
    while (!paused && (null !== (c = stream.read())))
      stream.emit('data', c);

    if (c === null) {
      readable = false;
      stream._readableState.needReadable = true;
    }
  });

  stream.pause = function() {
    paused = true;
    this.emit('pause');
  };

  stream.resume = function() {
    paused = false;
    if (readable)
      process.nextTick(function() {
        stream.emit('readable');
      });
    else
      this.read(0);
    this.emit('resume');
  };

  // now make it start, just in case it hadn't already.
  stream.emit('readable');
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    if (state.decoder)
      chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    //if (state.objectMode && util.isNullOrUndefined(chunk))
    if (state.objectMode && (chunk === null || chunk === undefined))
      return;
    else if (!state.objectMode && (!chunk || !chunk.length))
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (typeof stream[i] === 'function' &&
        typeof this[i] === 'undefined') {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};



// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0)
    throw new Error('endReadable called on non-empty stream');

  if (!state.endEmitted && state.calledRead) {
    state.ended = true;
    process.nextTick(function() {
      // Check that we didn't get one last unshift.
      if (!state.endEmitted && state.length === 0) {
        state.endEmitted = true;
        stream.readable = false;
        stream.emit('end');
      }
    });
  }
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf (xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}

}).call(this,require('_process'))
},{"_process":381,"buffer":177,"core-util-is":69,"events":375,"inherits":70,"isarray":71,"stream":399,"string_decoder/":72}],68:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.

module.exports = Writable;

/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Stream = require('stream');

util.inherits(Writable, Stream);

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
}

function WritableState(options, stream) {
  options = options || {};

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function(er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.buffer = [];

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

function Writable(options) {
  var Duplex = require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
  this.emit('error', new Error('Cannot pipe. Not readable.'));
};


function writeAfterEnd(stream, state, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  process.nextTick(function() {
    cb(er);
  });
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    process.nextTick(function() {
      cb(er);
    });
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (typeof cb !== 'function')
    cb = function() {};

  if (state.ended)
    writeAfterEnd(this, state, cb);
  else if (validChunk(this, state, chunk, cb))
    ret = writeOrBuffer(this, state, chunk, encoding, cb);

  return ret;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      typeof chunk === 'string') {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);
  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret)
    state.needDrain = true;

  if (state.writing)
    state.buffer.push(new WriteReq(chunk, encoding, cb));
  else
    doWrite(stream, state, len, chunk, encoding, cb);

  return ret;
}

function doWrite(stream, state, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  if (sync)
    process.nextTick(function() {
      cb(er);
    });
  else
    cb(er);

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er)
    onwriteError(stream, state, sync, er, cb);
  else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(stream, state);

    if (!finished && !state.bufferProcessing && state.buffer.length)
      clearBuffer(stream, state);

    if (sync) {
      process.nextTick(function() {
        afterWrite(stream, state, finished, cb);
      });
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  cb();
  if (finished)
    finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}


// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;

  for (var c = 0; c < state.buffer.length; c++) {
    var entry = state.buffer[c];
    var chunk = entry.chunk;
    var encoding = entry.encoding;
    var cb = entry.callback;
    var len = state.objectMode ? 1 : chunk.length;

    doWrite(stream, state, len, chunk, encoding, cb);

    // if we didn't call the onwrite immediately, then
    // it means that we need to wait until it does.
    // also, that means that the chunk and cb are currently
    // being processed, so move the buffer counter past them.
    if (state.writing) {
      c++;
      break;
    }
  }

  state.bufferProcessing = false;
  if (c < state.buffer.length)
    state.buffer = state.buffer.slice(c);
  else
    state.buffer.length = 0;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));
};

Writable.prototype.end = function(chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (typeof chunk !== 'undefined' && chunk !== null)
    this.write(chunk, encoding);

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(stream, state) {
  return (state.ending &&
          state.length === 0 &&
          !state.finished &&
          !state.writing);
}

function finishMaybe(stream, state) {
  var need = needFinish(stream, state);
  if (need) {
    state.finished = true;
    stream.emit('finish');
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      process.nextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

}).call(this,require('_process'))
},{"./_stream_duplex":66,"_process":381,"buffer":177,"core-util-is":69,"inherits":70,"stream":399}],69:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

function isBuffer(arg) {
  return Buffer.isBuffer(arg);
}
exports.isBuffer = isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}
}).call(this,{"isBuffer":require("../../../../../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../../../../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":378}],70:[function(require,module,exports){
arguments[4][52][0].apply(exports,arguments)
},{"dup":52}],71:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],72:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Buffer = require('buffer').Buffer;

var isBufferEncoding = Buffer.isEncoding
  || function(encoding) {
       switch (encoding && encoding.toLowerCase()) {
         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
         default: return false;
       }
     }


function assertEncoding(encoding) {
  if (encoding && !isBufferEncoding(encoding)) {
    throw new Error('Unknown encoding: ' + encoding);
  }
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
var StringDecoder = exports.StringDecoder = function(encoding) {
  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
  assertEncoding(encoding);
  switch (this.encoding) {
    case 'utf8':
      // CESU-8 represents each of Surrogate Pair by 3-bytes
      this.surrogateSize = 3;
      break;
    case 'ucs2':
    case 'utf16le':
      // UTF-16 represents each of Surrogate Pair by 2-bytes
      this.surrogateSize = 2;
      this.detectIncompleteChar = utf16DetectIncompleteChar;
      break;
    case 'base64':
      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
      this.surrogateSize = 3;
      this.detectIncompleteChar = base64DetectIncompleteChar;
      break;
    default:
      this.write = passThroughWrite;
      return;
  }

  // Enough space to store all bytes of a single character. UTF-8 needs 4
  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
  this.charBuffer = new Buffer(6);
  // Number of bytes received for the current incomplete multi-byte character.
  this.charReceived = 0;
  // Number of bytes expected for the current incomplete multi-byte character.
  this.charLength = 0;
};


// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder.prototype.write = function(buffer) {
  var charStr = '';
  // if our last write ended with an incomplete multibyte character
  while (this.charLength) {
    // determine how many remaining bytes this buffer has to offer for this char
    var available = (buffer.length >= this.charLength - this.charReceived) ?
        this.charLength - this.charReceived :
        buffer.length;

    // add the new bytes to the char buffer
    buffer.copy(this.charBuffer, this.charReceived, 0, available);
    this.charReceived += available;

    if (this.charReceived < this.charLength) {
      // still not enough chars in this buffer? wait for more ...
      return '';
    }

    // remove bytes belonging to the current character from the buffer
    buffer = buffer.slice(available, buffer.length);

    // get the character that was split
    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    var charCode = charStr.charCodeAt(charStr.length - 1);
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      this.charLength += this.surrogateSize;
      charStr = '';
      continue;
    }
    this.charReceived = this.charLength = 0;

    // if there are no more bytes in this buffer, just emit our char
    if (buffer.length === 0) {
      return charStr;
    }
    break;
  }

  // determine and set charLength / charReceived
  this.detectIncompleteChar(buffer);

  var end = buffer.length;
  if (this.charLength) {
    // buffer the incomplete character bytes we got
    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
    end -= this.charReceived;
  }

  charStr += buffer.toString(this.encoding, 0, end);

  var end = charStr.length - 1;
  var charCode = charStr.charCodeAt(end);
  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
    var size = this.surrogateSize;
    this.charLength += size;
    this.charReceived += size;
    this.charBuffer.copy(this.charBuffer, size, 0, size);
    buffer.copy(this.charBuffer, 0, 0, size);
    return charStr.substring(0, end);
  }

  // or just emit the charStr
  return charStr;
};

// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
  // determine how many bytes we have to check at the end of this buffer
  var i = (buffer.length >= 3) ? 3 : buffer.length;

  // Figure out if one of the last i bytes of our buffer announces an
  // incomplete char.
  for (; i > 0; i--) {
    var c = buffer[buffer.length - i];

    // See http://en.wikipedia.org/wiki/UTF-8#Description

    // 110XXXXX
    if (i == 1 && c >> 5 == 0x06) {
      this.charLength = 2;
      break;
    }

    // 1110XXXX
    if (i <= 2 && c >> 4 == 0x0E) {
      this.charLength = 3;
      break;
    }

    // 11110XXX
    if (i <= 3 && c >> 3 == 0x1E) {
      this.charLength = 4;
      break;
    }
  }
  this.charReceived = i;
};

StringDecoder.prototype.end = function(buffer) {
  var res = '';
  if (buffer && buffer.length)
    res = this.write(buffer);

  if (this.charReceived) {
    var cr = this.charReceived;
    var buf = this.charBuffer;
    var enc = this.encoding;
    res += buf.slice(0, cr).toString(enc);
  }

  return res;
};

function passThroughWrite(buffer) {
  return buffer.toString(this.encoding);
}

function utf16DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 2;
  this.charLength = this.charReceived ? 2 : 0;
}

function base64DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 3;
  this.charLength = this.charReceived ? 3 : 0;
}

},{"buffer":177}],73:[function(require,module,exports){
function Caseless (dict) {
  this.dict = dict || {}
}
Caseless.prototype.set = function (name, value, clobber) {
  if (typeof name === 'object') {
    for (var i in name) {
      this.set(i, name[i], value)
    }
  } else {
    if (typeof clobber === 'undefined') clobber = true
    var has = this.has(name)

    if (!clobber && has) this.dict[has] = this.dict[has] + ',' + value
    else this.dict[has || name] = value
    return has
  }
}
Caseless.prototype.has = function (name) {
  var keys = Object.keys(this.dict)
    , name = name.toLowerCase()
    ;
  for (var i=0;i<keys.length;i++) {
    if (keys[i].toLowerCase() === name) return keys[i]
  }
  return false
}
Caseless.prototype.get = function (name) {
  name = name.toLowerCase()
  var result, _key
  var headers = this.dict
  Object.keys(headers).forEach(function (key) {
    _key = key.toLowerCase()
    if (name === _key) result = headers[key]
  })
  return result
}
Caseless.prototype.swap = function (name) {
  var has = this.has(name)
  if (!has) throw new Error('There is no header than matches "'+name+'"')
  this.dict[name] = this.dict[has]
  delete this.dict[has]
}
Caseless.prototype.del = function (name) {
  var has = this.has(name)
  return delete this.dict[has || name]
}

module.exports = function (dict) {return new Caseless(dict)}
module.exports.httpify = function (resp, headers) {
  var c = new Caseless(headers)
  resp.setHeader = function (key, value, clobber) {
    return c.set(key, value, clobber)
  }
  resp.hasHeader = function (key) {
    return c.has(key)
  }
  resp.getHeader = function (key) {
    return c.get(key)
  }
  resp.removeHeader = function (key) {
    return c.del(key)
  }
  resp.headers = c.dict
  return c
}

},{}],74:[function(require,module,exports){
(function (Buffer){
var util = require('util');
var Stream = require('stream').Stream;
var DelayedStream = require('delayed-stream');

module.exports = CombinedStream;
function CombinedStream() {
  this.writable = false;
  this.readable = true;
  this.dataSize = 0;
  this.maxDataSize = 2 * 1024 * 1024;
  this.pauseStreams = true;

  this._released = false;
  this._streams = [];
  this._currentStream = null;
}
util.inherits(CombinedStream, Stream);

CombinedStream.create = function(options) {
  var combinedStream = new this();

  options = options || {};
  for (var option in options) {
    combinedStream[option] = options[option];
  }

  return combinedStream;
};

CombinedStream.isStreamLike = function(stream) {
  return (typeof stream !== 'function')
    && (typeof stream !== 'string')
    && (typeof stream !== 'boolean')
    && (typeof stream !== 'number')
    && (!Buffer.isBuffer(stream));
};

CombinedStream.prototype.append = function(stream) {
  var isStreamLike = CombinedStream.isStreamLike(stream);

  if (isStreamLike) {
    if (!(stream instanceof DelayedStream)) {
      var newStream = DelayedStream.create(stream, {
        maxDataSize: Infinity,
        pauseStream: this.pauseStreams,
      });
      stream.on('data', this._checkDataSize.bind(this));
      stream = newStream;
    }

    this._handleErrors(stream);

    if (this.pauseStreams) {
      stream.pause();
    }
  }

  this._streams.push(stream);
  return this;
};

CombinedStream.prototype.pipe = function(dest, options) {
  Stream.prototype.pipe.call(this, dest, options);
  this.resume();
  return dest;
};

CombinedStream.prototype._getNext = function() {
  this._currentStream = null;
  var stream = this._streams.shift();


  if (typeof stream == 'undefined') {
    this.end();
    return;
  }

  if (typeof stream !== 'function') {
    this._pipeNext(stream);
    return;
  }

  var getStream = stream;
  getStream(function(stream) {
    var isStreamLike = CombinedStream.isStreamLike(stream);
    if (isStreamLike) {
      stream.on('data', this._checkDataSize.bind(this));
      this._handleErrors(stream);
    }

    this._pipeNext(stream);
  }.bind(this));
};

CombinedStream.prototype._pipeNext = function(stream) {
  this._currentStream = stream;

  var isStreamLike = CombinedStream.isStreamLike(stream);
  if (isStreamLike) {
    stream.on('end', this._getNext.bind(this));
    stream.pipe(this, {end: false});
    return;
  }

  var value = stream;
  this.write(value);
  this._getNext();
};

CombinedStream.prototype._handleErrors = function(stream) {
  var self = this;
  stream.on('error', function(err) {
    self._emitError(err);
  });
};

CombinedStream.prototype.write = function(data) {
  this.emit('data', data);
};

CombinedStream.prototype.pause = function() {
  if (!this.pauseStreams) {
    return;
  }

  if(this.pauseStreams && this._currentStream && typeof(this._currentStream.pause) == 'function') this._currentStream.pause();
  this.emit('pause');
};

CombinedStream.prototype.resume = function() {
  if (!this._released) {
    this._released = true;
    this.writable = true;
    this._getNext();
  }

  if(this.pauseStreams && this._currentStream && typeof(this._currentStream.resume) == 'function') this._currentStream.resume();
  this.emit('resume');
};

CombinedStream.prototype.end = function() {
  this._reset();
  this.emit('end');
};

CombinedStream.prototype.destroy = function() {
  this._reset();
  this.emit('close');
};

CombinedStream.prototype._reset = function() {
  this.writable = false;
  this._streams = [];
  this._currentStream = null;
};

CombinedStream.prototype._checkDataSize = function() {
  this._updateDataSize();
  if (this.dataSize <= this.maxDataSize) {
    return;
  }

  var message =
    'DelayedStream#maxDataSize of ' + this.maxDataSize + ' bytes exceeded.';
  this._emitError(new Error(message));
};

CombinedStream.prototype._updateDataSize = function() {
  this.dataSize = 0;

  var self = this;
  this._streams.forEach(function(stream) {
    if (!stream.dataSize) {
      return;
    }

    self.dataSize += stream.dataSize;
  });

  if (this._currentStream && this._currentStream.dataSize) {
    this.dataSize += this._currentStream.dataSize;
  }
};

CombinedStream.prototype._emitError = function(err) {
  this._reset();
  this.emit('error', err);
};

}).call(this,{"isBuffer":require("../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":378,"delayed-stream":75,"stream":399,"util":410}],75:[function(require,module,exports){
var Stream = require('stream').Stream;
var util = require('util');

module.exports = DelayedStream;
function DelayedStream() {
  this.source = null;
  this.dataSize = 0;
  this.maxDataSize = 1024 * 1024;
  this.pauseStream = true;

  this._maxDataSizeExceeded = false;
  this._released = false;
  this._bufferedEvents = [];
}
util.inherits(DelayedStream, Stream);

DelayedStream.create = function(source, options) {
  var delayedStream = new this();

  options = options || {};
  for (var option in options) {
    delayedStream[option] = options[option];
  }

  delayedStream.source = source;

  var realEmit = source.emit;
  source.emit = function() {
    delayedStream._handleEmit(arguments);
    return realEmit.apply(source, arguments);
  };

  source.on('error', function() {});
  if (delayedStream.pauseStream) {
    source.pause();
  }

  return delayedStream;
};

DelayedStream.prototype.__defineGetter__('readable', function() {
  return this.source.readable;
});

DelayedStream.prototype.resume = function() {
  if (!this._released) {
    this.release();
  }

  this.source.resume();
};

DelayedStream.prototype.pause = function() {
  this.source.pause();
};

DelayedStream.prototype.release = function() {
  this._released = true;

  this._bufferedEvents.forEach(function(args) {
    this.emit.apply(this, args);
  }.bind(this));
  this._bufferedEvents = [];
};

DelayedStream.prototype.pipe = function() {
  var r = Stream.prototype.pipe.apply(this, arguments);
  this.resume();
  return r;
};

DelayedStream.prototype._handleEmit = function(args) {
  if (this._released) {
    this.emit.apply(this, args);
    return;
  }

  if (args[0] === 'data') {
    this.dataSize += args[1].length;
    this._checkIfMaxDataSizeExceeded();
  }

  this._bufferedEvents.push(args);
};

DelayedStream.prototype._checkIfMaxDataSizeExceeded = function() {
  if (this._maxDataSizeExceeded) {
    return;
  }

  if (this.dataSize <= this.maxDataSize) {
    return;
  }

  this._maxDataSizeExceeded = true;
  var message =
    'DelayedStream#maxDataSize of ' + this.maxDataSize + ' bytes exceeded.'
  this.emit('error', new Error(message));
};

},{"stream":399,"util":410}],76:[function(require,module,exports){
module.exports = ForeverAgent
ForeverAgent.SSL = ForeverAgentSSL

var util = require('util')
  , Agent = require('http').Agent
  , net = require('net')
  , tls = require('tls')
  , AgentSSL = require('https').Agent
  
function getConnectionName(host, port) {  
  var name = ''
  if (typeof host === 'string') {
    name = host + ':' + port
  } else {
    // For node.js v012.0 and iojs-v1.5.1, host is an object. And any existing localAddress is part of the connection name.
    name = host.host + ':' + host.port + ':' + (host.localAddress ? (host.localAddress + ':') : ':')
  }
  return name
}    

function ForeverAgent(options) {
  var self = this
  self.options = options || {}
  self.requests = {}
  self.sockets = {}
  self.freeSockets = {}
  self.maxSockets = self.options.maxSockets || Agent.defaultMaxSockets
  self.minSockets = self.options.minSockets || ForeverAgent.defaultMinSockets
  self.on('free', function(socket, host, port) {
    var name = getConnectionName(host, port)

    if (self.requests[name] && self.requests[name].length) {
      self.requests[name].shift().onSocket(socket)
    } else if (self.sockets[name].length < self.minSockets) {
      if (!self.freeSockets[name]) self.freeSockets[name] = []
      self.freeSockets[name].push(socket)
      
      // if an error happens while we don't use the socket anyway, meh, throw the socket away
      var onIdleError = function() {
        socket.destroy()
      }
      socket._onIdleError = onIdleError
      socket.on('error', onIdleError)
    } else {
      // If there are no pending requests just destroy the
      // socket and it will get removed from the pool. This
      // gets us out of timeout issues and allows us to
      // default to Connection:keep-alive.
      socket.destroy()
    }
  })

}
util.inherits(ForeverAgent, Agent)

ForeverAgent.defaultMinSockets = 5


ForeverAgent.prototype.createConnection = net.createConnection
ForeverAgent.prototype.addRequestNoreuse = Agent.prototype.addRequest
ForeverAgent.prototype.addRequest = function(req, host, port) {
  var name = getConnectionName(host, port)
  
  if (typeof host !== 'string') {
    var options = host
    port = options.port
    host = options.host
  }

  if (this.freeSockets[name] && this.freeSockets[name].length > 0 && !req.useChunkedEncodingByDefault) {
    var idleSocket = this.freeSockets[name].pop()
    idleSocket.removeListener('error', idleSocket._onIdleError)
    delete idleSocket._onIdleError
    req._reusedSocket = true
    req.onSocket(idleSocket)
  } else {
    this.addRequestNoreuse(req, host, port)
  }
}

ForeverAgent.prototype.removeSocket = function(s, name, host, port) {
  if (this.sockets[name]) {
    var index = this.sockets[name].indexOf(s)
    if (index !== -1) {
      this.sockets[name].splice(index, 1)
    }
  } else if (this.sockets[name] && this.sockets[name].length === 0) {
    // don't leak
    delete this.sockets[name]
    delete this.requests[name]
  }
  
  if (this.freeSockets[name]) {
    var index = this.freeSockets[name].indexOf(s)
    if (index !== -1) {
      this.freeSockets[name].splice(index, 1)
      if (this.freeSockets[name].length === 0) {
        delete this.freeSockets[name]
      }
    }
  }

  if (this.requests[name] && this.requests[name].length) {
    // If we have pending requests and a socket gets closed a new one
    // needs to be created to take over in the pool for the one that closed.
    this.createSocket(name, host, port).emit('free')
  }
}

function ForeverAgentSSL (options) {
  ForeverAgent.call(this, options)
}
util.inherits(ForeverAgentSSL, ForeverAgent)

ForeverAgentSSL.prototype.createConnection = createConnectionSSL
ForeverAgentSSL.prototype.addRequestNoreuse = AgentSSL.prototype.addRequest

function createConnectionSSL (port, host, options) {
  if (typeof port === 'object') {
    options = port;
  } else if (typeof host === 'object') {
    options = host;
  } else if (typeof options === 'object') {
    options = options;
  } else {
    options = {};
  }

  if (typeof port === 'number') {
    options.port = port;
  }

  if (typeof host === 'string') {
    options.host = host;
  }

  return tls.connect(options);
}

},{"http":400,"https":376,"net":161,"tls":161,"util":410}],77:[function(require,module,exports){
(function (process,Buffer){
var CombinedStream = require('combined-stream');
var util = require('util');
var path = require('path');
var http = require('http');
var https = require('https');
var parseUrl = require('url').parse;
var fs = require('fs');
var mime = require('mime-types');
var async = require('async');

module.exports = FormData;
function FormData() {
  this._overheadLength = 0;
  this._valueLength = 0;
  this._lengthRetrievers = [];

  CombinedStream.call(this);
}
util.inherits(FormData, CombinedStream);

FormData.LINE_BREAK = '\r\n';

FormData.prototype.append = function(field, value, options) {
  options = options || {};

  var append = CombinedStream.prototype.append.bind(this);

  // all that streamy business can't handle numbers
  if (typeof value == 'number') value = ''+value;

  // https://github.com/felixge/node-form-data/issues/38
  if (util.isArray(value)) {
    // Please convert your array into string
    // the way web server expects it
    this._error(new Error('Arrays are not supported.'));
    return;
  }

  var header = this._multiPartHeader(field, value, options);
  var footer = this._multiPartFooter(field, value, options);

  append(header);
  append(value);
  append(footer);

  // pass along options.knownLength
  this._trackLength(header, value, options);
};

FormData.prototype._trackLength = function(header, value, options) {
  var valueLength = 0;

  // used w/ getLengthSync(), when length is known.
  // e.g. for streaming directly from a remote server,
  // w/ a known file a size, and not wanting to wait for
  // incoming file to finish to get its size.
  if (options.knownLength != null) {
    valueLength += +options.knownLength;
  } else if (Buffer.isBuffer(value)) {
    valueLength = value.length;
  } else if (typeof value === 'string') {
    valueLength = Buffer.byteLength(value);
  }

  this._valueLength += valueLength;

  // @check why add CRLF? does this account for custom/multiple CRLFs?
  this._overheadLength +=
    Buffer.byteLength(header) +
    + FormData.LINE_BREAK.length;

  // empty or either doesn't have path or not an http response
  if (!value || ( !value.path && !(value.readable && value.hasOwnProperty('httpVersion')) )) {
    return;
  }

  // no need to bother with the length
  if (!options.knownLength)
  this._lengthRetrievers.push(function(next) {

    if (value.hasOwnProperty('fd')) {

      // take read range into a account
      // `end` = Infinity –> read file till the end
      //
      // TODO: Looks like there is bug in Node fs.createReadStream
      // it doesn't respect `end` options without `start` options
      // Fix it when node fixes it.
      // https://github.com/joyent/node/issues/7819
      if (value.end != undefined && value.end != Infinity && value.start != undefined) {

        // when end specified
        // no need to calculate range
        // inclusive, starts with 0
        next(null, value.end+1 - (value.start ? value.start : 0));

      // not that fast snoopy
      } else {
        // still need to fetch file size from fs
        fs.stat(value.path, function(err, stat) {

          var fileSize;

          if (err) {
            next(err);
            return;
          }

          // update final size based on the range options
          fileSize = stat.size - (value.start ? value.start : 0);
          next(null, fileSize);
        });
      }

    // or http response
    } else if (value.hasOwnProperty('httpVersion')) {
      next(null, +value.headers['content-length']);

    // or request stream http://github.com/mikeal/request
    } else if (value.hasOwnProperty('httpModule')) {
      // wait till response come back
      value.on('response', function(response) {
        value.pause();
        next(null, +response.headers['content-length']);
      });
      value.resume();

    // something else
    } else {
      next('Unknown stream');
    }
  });
};

FormData.prototype._multiPartHeader = function(field, value, options) {
  var boundary = this.getBoundary();
  var header = '';

  // custom header specified (as string)?
  // it becomes responsible for boundary
  // (e.g. to handle extra CRLFs on .NET servers)
  if (options.header != null) {
    header = options.header;
  } else {
    header += '--' + boundary + FormData.LINE_BREAK +
      'Content-Disposition: form-data; name="' + field + '"';

    // fs- and request- streams have path property
    // or use custom filename and/or contentType
    // TODO: Use request's response mime-type
    if (options.filename || value.path) {
      header +=
        '; filename="' + path.basename(options.filename || value.path) + '"' + FormData.LINE_BREAK +
        'Content-Type: ' +  (options.contentType || mime.lookup(options.filename || value.path));

    // http response has not
    } else if (value.readable && value.hasOwnProperty('httpVersion')) {
      header +=
        '; filename="' + path.basename(value.client._httpMessage.path) + '"' + FormData.LINE_BREAK +
        'Content-Type: ' + value.headers['content-type'];
    }

    header += FormData.LINE_BREAK + FormData.LINE_BREAK;
  }

  return header;
};

FormData.prototype._multiPartFooter = function(field, value, options) {
  return function(next) {
    var footer = FormData.LINE_BREAK;

    var lastPart = (this._streams.length === 0);
    if (lastPart) {
      footer += this._lastBoundary();
    }

    next(footer);
  }.bind(this);
};

FormData.prototype._lastBoundary = function() {
  return '--' + this.getBoundary() + '--';
};

FormData.prototype.getHeaders = function(userHeaders) {
  var formHeaders = {
    'content-type': 'multipart/form-data; boundary=' + this.getBoundary()
  };

  for (var header in userHeaders) {
    formHeaders[header.toLowerCase()] = userHeaders[header];
  }

  return formHeaders;
}

FormData.prototype.getCustomHeaders = function(contentType) {
    contentType = contentType ? contentType : 'multipart/form-data';

    var formHeaders = {
        'content-type': contentType + '; boundary=' + this.getBoundary(),
        'content-length': this.getLengthSync()
    };

    return formHeaders;
}

FormData.prototype.getBoundary = function() {
  if (!this._boundary) {
    this._generateBoundary();
  }

  return this._boundary;
};

FormData.prototype._generateBoundary = function() {
  // This generates a 50 character boundary similar to those used by Firefox.
  // They are optimized for boyer-moore parsing.
  var boundary = '--------------------------';
  for (var i = 0; i < 24; i++) {
    boundary += Math.floor(Math.random() * 10).toString(16);
  }

  this._boundary = boundary;
};

// Note: getLengthSync DOESN'T calculate streams length
// As workaround one can calculate file size manually
// and add it as knownLength option
FormData.prototype.getLengthSync = function(debug) {
  var knownLength = this._overheadLength + this._valueLength;

  // Don't get confused, there are 3 "internal" streams for each keyval pair
  // so it basically checks if there is any value added to the form
  if (this._streams.length) {
    knownLength += this._lastBoundary().length;
  }

  // https://github.com/felixge/node-form-data/issues/40
  if (this._lengthRetrievers.length) {
    // Some async length retrivers are present
    // therefore synchronous length calculation is false.
    // Please use getLength(callback) to get proper length
    this._error(new Error('Cannot calculate proper length in synchronous way.'));
  }

  return knownLength;
};

FormData.prototype.getLength = function(cb) {
  var knownLength = this._overheadLength + this._valueLength;

  if (this._streams.length) {
    knownLength += this._lastBoundary().length;
  }

  if (!this._lengthRetrievers.length) {
    process.nextTick(cb.bind(this, null, knownLength));
    return;
  }

  async.parallel(this._lengthRetrievers, function(err, values) {
    if (err) {
      cb(err);
      return;
    }

    values.forEach(function(length) {
      knownLength += length;
    });

    cb(null, knownLength);
  });
};

FormData.prototype.submit = function(params, cb) {

  var request
    , options
    , defaults = {
        method : 'post'
    };

  // parse provided url if it's string
  // or treat it as options object
  if (typeof params == 'string') {
    params = parseUrl(params);

    options = populate({
      port: params.port,
      path: params.pathname,
      host: params.hostname
    }, defaults);
  }
  else // use custom params
  {
    options = populate(params, defaults);
    // if no port provided use default one
    if (!options.port) {
      options.port = options.protocol == 'https:' ? 443 : 80;
    }
  }

  // put that good code in getHeaders to some use
  options.headers = this.getHeaders(params.headers);

  // https if specified, fallback to http in any other case
  if (params.protocol == 'https:') {
    request = https.request(options);
  } else {
    request = http.request(options);
  }

  // get content length and fire away
  this.getLength(function(err, length) {

    // TODO: Add chunked encoding when no length (if err)

    // add content length
    request.setHeader('Content-Length', length);

    this.pipe(request);
    if (cb) {
      request.on('error', cb);
      request.on('response', cb.bind(this, null));
    }
  }.bind(this));

  return request;
};

FormData.prototype._error = function(err) {
  if (this.error) return;

  this.error = err;
  this.pause();
  this.emit('error', err);
};

/*
 * Santa's little helpers
 */

// populates missing values
function populate(dst, src) {
  for (var prop in src) {
    if (!dst[prop]) dst[prop] = src[prop];
  }
  return dst;
}

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":381,"async":78,"buffer":177,"combined-stream":74,"fs":161,"http":400,"https":376,"mime-types":122,"path":380,"url":407,"util":410}],78:[function(require,module,exports){
(function (process){
/*!
 * async
 * https://github.com/caolan/async
 *
 * Copyright 2010-2014 Caolan McMahon
 * Released under the MIT license
 */
/*jshint onevar: false, indent:4 */
/*global setImmediate: false, setTimeout: false, console: false */
(function () {

    var async = {};

    // global on the server, window in the browser
    var root, previous_async;

    root = this;
    if (root != null) {
      previous_async = root.async;
    }

    async.noConflict = function () {
        root.async = previous_async;
        return async;
    };

    function only_once(fn) {
        var called = false;
        return function() {
            if (called) throw new Error("Callback was already called.");
            called = true;
            fn.apply(root, arguments);
        }
    }

    //// cross-browser compatiblity functions ////

    var _toString = Object.prototype.toString;

    var _isArray = Array.isArray || function (obj) {
        return _toString.call(obj) === '[object Array]';
    };

    var _each = function (arr, iterator) {
        if (arr.forEach) {
            return arr.forEach(iterator);
        }
        for (var i = 0; i < arr.length; i += 1) {
            iterator(arr[i], i, arr);
        }
    };

    var _map = function (arr, iterator) {
        if (arr.map) {
            return arr.map(iterator);
        }
        var results = [];
        _each(arr, function (x, i, a) {
            results.push(iterator(x, i, a));
        });
        return results;
    };

    var _reduce = function (arr, iterator, memo) {
        if (arr.reduce) {
            return arr.reduce(iterator, memo);
        }
        _each(arr, function (x, i, a) {
            memo = iterator(memo, x, i, a);
        });
        return memo;
    };

    var _keys = function (obj) {
        if (Object.keys) {
            return Object.keys(obj);
        }
        var keys = [];
        for (var k in obj) {
            if (obj.hasOwnProperty(k)) {
                keys.push(k);
            }
        }
        return keys;
    };

    //// exported async module functions ////

    //// nextTick implementation with browser-compatible fallback ////
    if (typeof process === 'undefined' || !(process.nextTick)) {
        if (typeof setImmediate === 'function') {
            async.nextTick = function (fn) {
                // not a direct alias for IE10 compatibility
                setImmediate(fn);
            };
            async.setImmediate = async.nextTick;
        }
        else {
            async.nextTick = function (fn) {
                setTimeout(fn, 0);
            };
            async.setImmediate = async.nextTick;
        }
    }
    else {
        async.nextTick = process.nextTick;
        if (typeof setImmediate !== 'undefined') {
            async.setImmediate = function (fn) {
              // not a direct alias for IE10 compatibility
              setImmediate(fn);
            };
        }
        else {
            async.setImmediate = async.nextTick;
        }
    }

    async.each = function (arr, iterator, callback) {
        callback = callback || function () {};
        if (!arr.length) {
            return callback();
        }
        var completed = 0;
        _each(arr, function (x) {
            iterator(x, only_once(done) );
        });
        function done(err) {
          if (err) {
              callback(err);
              callback = function () {};
          }
          else {
              completed += 1;
              if (completed >= arr.length) {
                  callback();
              }
          }
        }
    };
    async.forEach = async.each;

    async.eachSeries = function (arr, iterator, callback) {
        callback = callback || function () {};
        if (!arr.length) {
            return callback();
        }
        var completed = 0;
        var iterate = function () {
            iterator(arr[completed], function (err) {
                if (err) {
                    callback(err);
                    callback = function () {};
                }
                else {
                    completed += 1;
                    if (completed >= arr.length) {
                        callback();
                    }
                    else {
                        iterate();
                    }
                }
            });
        };
        iterate();
    };
    async.forEachSeries = async.eachSeries;

    async.eachLimit = function (arr, limit, iterator, callback) {
        var fn = _eachLimit(limit);
        fn.apply(null, [arr, iterator, callback]);
    };
    async.forEachLimit = async.eachLimit;

    var _eachLimit = function (limit) {

        return function (arr, iterator, callback) {
            callback = callback || function () {};
            if (!arr.length || limit <= 0) {
                return callback();
            }
            var completed = 0;
            var started = 0;
            var running = 0;

            (function replenish () {
                if (completed >= arr.length) {
                    return callback();
                }

                while (running < limit && started < arr.length) {
                    started += 1;
                    running += 1;
                    iterator(arr[started - 1], function (err) {
                        if (err) {
                            callback(err);
                            callback = function () {};
                        }
                        else {
                            completed += 1;
                            running -= 1;
                            if (completed >= arr.length) {
                                callback();
                            }
                            else {
                                replenish();
                            }
                        }
                    });
                }
            })();
        };
    };


    var doParallel = function (fn) {
        return function () {
            var args = Array.prototype.slice.call(arguments);
            return fn.apply(null, [async.each].concat(args));
        };
    };
    var doParallelLimit = function(limit, fn) {
        return function () {
            var args = Array.prototype.slice.call(arguments);
            return fn.apply(null, [_eachLimit(limit)].concat(args));
        };
    };
    var doSeries = function (fn) {
        return function () {
            var args = Array.prototype.slice.call(arguments);
            return fn.apply(null, [async.eachSeries].concat(args));
        };
    };


    var _asyncMap = function (eachfn, arr, iterator, callback) {
        arr = _map(arr, function (x, i) {
            return {index: i, value: x};
        });
        if (!callback) {
            eachfn(arr, function (x, callback) {
                iterator(x.value, function (err) {
                    callback(err);
                });
            });
        } else {
            var results = [];
            eachfn(arr, function (x, callback) {
                iterator(x.value, function (err, v) {
                    results[x.index] = v;
                    callback(err);
                });
            }, function (err) {
                callback(err, results);
            });
        }
    };
    async.map = doParallel(_asyncMap);
    async.mapSeries = doSeries(_asyncMap);
    async.mapLimit = function (arr, limit, iterator, callback) {
        return _mapLimit(limit)(arr, iterator, callback);
    };

    var _mapLimit = function(limit) {
        return doParallelLimit(limit, _asyncMap);
    };

    // reduce only has a series version, as doing reduce in parallel won't
    // work in many situations.
    async.reduce = function (arr, memo, iterator, callback) {
        async.eachSeries(arr, function (x, callback) {
            iterator(memo, x, function (err, v) {
                memo = v;
                callback(err);
            });
        }, function (err) {
            callback(err, memo);
        });
    };
    // inject alias
    async.inject = async.reduce;
    // foldl alias
    async.foldl = async.reduce;

    async.reduceRight = function (arr, memo, iterator, callback) {
        var reversed = _map(arr, function (x) {
            return x;
        }).reverse();
        async.reduce(reversed, memo, iterator, callback);
    };
    // foldr alias
    async.foldr = async.reduceRight;

    var _filter = function (eachfn, arr, iterator, callback) {
        var results = [];
        arr = _map(arr, function (x, i) {
            return {index: i, value: x};
        });
        eachfn(arr, function (x, callback) {
            iterator(x.value, function (v) {
                if (v) {
                    results.push(x);
                }
                callback();
            });
        }, function (err) {
            callback(_map(results.sort(function (a, b) {
                return a.index - b.index;
            }), function (x) {
                return x.value;
            }));
        });
    };
    async.filter = doParallel(_filter);
    async.filterSeries = doSeries(_filter);
    // select alias
    async.select = async.filter;
    async.selectSeries = async.filterSeries;

    var _reject = function (eachfn, arr, iterator, callback) {
        var results = [];
        arr = _map(arr, function (x, i) {
            return {index: i, value: x};
        });
        eachfn(arr, function (x, callback) {
            iterator(x.value, function (v) {
                if (!v) {
                    results.push(x);
                }
                callback();
            });
        }, function (err) {
            callback(_map(results.sort(function (a, b) {
                return a.index - b.index;
            }), function (x) {
                return x.value;
            }));
        });
    };
    async.reject = doParallel(_reject);
    async.rejectSeries = doSeries(_reject);

    var _detect = function (eachfn, arr, iterator, main_callback) {
        eachfn(arr, function (x, callback) {
            iterator(x, function (result) {
                if (result) {
                    main_callback(x);
                    main_callback = function () {};
                }
                else {
                    callback();
                }
            });
        }, function (err) {
            main_callback();
        });
    };
    async.detect = doParallel(_detect);
    async.detectSeries = doSeries(_detect);

    async.some = function (arr, iterator, main_callback) {
        async.each(arr, function (x, callback) {
            iterator(x, function (v) {
                if (v) {
                    main_callback(true);
                    main_callback = function () {};
                }
                callback();
            });
        }, function (err) {
            main_callback(false);
        });
    };
    // any alias
    async.any = async.some;

    async.every = function (arr, iterator, main_callback) {
        async.each(arr, function (x, callback) {
            iterator(x, function (v) {
                if (!v) {
                    main_callback(false);
                    main_callback = function () {};
                }
                callback();
            });
        }, function (err) {
            main_callback(true);
        });
    };
    // all alias
    async.all = async.every;

    async.sortBy = function (arr, iterator, callback) {
        async.map(arr, function (x, callback) {
            iterator(x, function (err, criteria) {
                if (err) {
                    callback(err);
                }
                else {
                    callback(null, {value: x, criteria: criteria});
                }
            });
        }, function (err, results) {
            if (err) {
                return callback(err);
            }
            else {
                var fn = function (left, right) {
                    var a = left.criteria, b = right.criteria;
                    return a < b ? -1 : a > b ? 1 : 0;
                };
                callback(null, _map(results.sort(fn), function (x) {
                    return x.value;
                }));
            }
        });
    };

    async.auto = function (tasks, callback) {
        callback = callback || function () {};
        var keys = _keys(tasks);
        var remainingTasks = keys.length
        if (!remainingTasks) {
            return callback();
        }

        var results = {};

        var listeners = [];
        var addListener = function (fn) {
            listeners.unshift(fn);
        };
        var removeListener = function (fn) {
            for (var i = 0; i < listeners.length; i += 1) {
                if (listeners[i] === fn) {
                    listeners.splice(i, 1);
                    return;
                }
            }
        };
        var taskComplete = function () {
            remainingTasks--
            _each(listeners.slice(0), function (fn) {
                fn();
            });
        };

        addListener(function () {
            if (!remainingTasks) {
                var theCallback = callback;
                // prevent final callback from calling itself if it errors
                callback = function () {};

                theCallback(null, results);
            }
        });

        _each(keys, function (k) {
            var task = _isArray(tasks[k]) ? tasks[k]: [tasks[k]];
            var taskCallback = function (err) {
                var args = Array.prototype.slice.call(arguments, 1);
                if (args.length <= 1) {
                    args = args[0];
                }
                if (err) {
                    var safeResults = {};
                    _each(_keys(results), function(rkey) {
                        safeResults[rkey] = results[rkey];
                    });
                    safeResults[k] = args;
                    callback(err, safeResults);
                    // stop subsequent errors hitting callback multiple times
                    callback = function () {};
                }
                else {
                    results[k] = args;
                    async.setImmediate(taskComplete);
                }
            };
            var requires = task.slice(0, Math.abs(task.length - 1)) || [];
            var ready = function () {
                return _reduce(requires, function (a, x) {
                    return (a && results.hasOwnProperty(x));
                }, true) && !results.hasOwnProperty(k);
            };
            if (ready()) {
                task[task.length - 1](taskCallback, results);
            }
            else {
                var listener = function () {
                    if (ready()) {
                        removeListener(listener);
                        task[task.length - 1](taskCallback, results);
                    }
                };
                addListener(listener);
            }
        });
    };

    async.retry = function(times, task, callback) {
        var DEFAULT_TIMES = 5;
        var attempts = [];
        // Use defaults if times not passed
        if (typeof times === 'function') {
            callback = task;
            task = times;
            times = DEFAULT_TIMES;
        }
        // Make sure times is a number
        times = parseInt(times, 10) || DEFAULT_TIMES;
        var wrappedTask = function(wrappedCallback, wrappedResults) {
            var retryAttempt = function(task, finalAttempt) {
                return function(seriesCallback) {
                    task(function(err, result){
                        seriesCallback(!err || finalAttempt, {err: err, result: result});
                    }, wrappedResults);
                };
            };
            while (times) {
                attempts.push(retryAttempt(task, !(times-=1)));
            }
            async.series(attempts, function(done, data){
                data = data[data.length - 1];
                (wrappedCallback || callback)(data.err, data.result);
            });
        }
        // If a callback is passed, run this as a controll flow
        return callback ? wrappedTask() : wrappedTask
    };

    async.waterfall = function (tasks, callback) {
        callback = callback || function () {};
        if (!_isArray(tasks)) {
          var err = new Error('First argument to waterfall must be an array of functions');
          return callback(err);
        }
        if (!tasks.length) {
            return callback();
        }
        var wrapIterator = function (iterator) {
            return function (err) {
                if (err) {
                    callback.apply(null, arguments);
                    callback = function () {};
                }
                else {
                    var args = Array.prototype.slice.call(arguments, 1);
                    var next = iterator.next();
                    if (next) {
                        args.push(wrapIterator(next));
                    }
                    else {
                        args.push(callback);
                    }
                    async.setImmediate(function () {
                        iterator.apply(null, args);
                    });
                }
            };
        };
        wrapIterator(async.iterator(tasks))();
    };

    var _parallel = function(eachfn, tasks, callback) {
        callback = callback || function () {};
        if (_isArray(tasks)) {
            eachfn.map(tasks, function (fn, callback) {
                if (fn) {
                    fn(function (err) {
                        var args = Array.prototype.slice.call(arguments, 1);
                        if (args.length <= 1) {
                            args = args[0];
                        }
                        callback.call(null, err, args);
                    });
                }
            }, callback);
        }
        else {
            var results = {};
            eachfn.each(_keys(tasks), function (k, callback) {
                tasks[k](function (err) {
                    var args = Array.prototype.slice.call(arguments, 1);
                    if (args.length <= 1) {
                        args = args[0];
                    }
                    results[k] = args;
                    callback(err);
                });
            }, function (err) {
                callback(err, results);
            });
        }
    };

    async.parallel = function (tasks, callback) {
        _parallel({ map: async.map, each: async.each }, tasks, callback);
    };

    async.parallelLimit = function(tasks, limit, callback) {
        _parallel({ map: _mapLimit(limit), each: _eachLimit(limit) }, tasks, callback);
    };

    async.series = function (tasks, callback) {
        callback = callback || function () {};
        if (_isArray(tasks)) {
            async.mapSeries(tasks, function (fn, callback) {
                if (fn) {
                    fn(function (err) {
                        var args = Array.prototype.slice.call(arguments, 1);
                        if (args.length <= 1) {
                            args = args[0];
                        }
                        callback.call(null, err, args);
                    });
                }
            }, callback);
        }
        else {
            var results = {};
            async.eachSeries(_keys(tasks), function (k, callback) {
                tasks[k](function (err) {
                    var args = Array.prototype.slice.call(arguments, 1);
                    if (args.length <= 1) {
                        args = args[0];
                    }
                    results[k] = args;
                    callback(err);
                });
            }, function (err) {
                callback(err, results);
            });
        }
    };

    async.iterator = function (tasks) {
        var makeCallback = function (index) {
            var fn = function () {
                if (tasks.length) {
                    tasks[index].apply(null, arguments);
                }
                return fn.next();
            };
            fn.next = function () {
                return (index < tasks.length - 1) ? makeCallback(index + 1): null;
            };
            return fn;
        };
        return makeCallback(0);
    };

    async.apply = function (fn) {
        var args = Array.prototype.slice.call(arguments, 1);
        return function () {
            return fn.apply(
                null, args.concat(Array.prototype.slice.call(arguments))
            );
        };
    };

    var _concat = function (eachfn, arr, fn, callback) {
        var r = [];
        eachfn(arr, function (x, cb) {
            fn(x, function (err, y) {
                r = r.concat(y || []);
                cb(err);
            });
        }, function (err) {
            callback(err, r);
        });
    };
    async.concat = doParallel(_concat);
    async.concatSeries = doSeries(_concat);

    async.whilst = function (test, iterator, callback) {
        if (test()) {
            iterator(function (err) {
                if (err) {
                    return callback(err);
                }
                async.whilst(test, iterator, callback);
            });
        }
        else {
            callback();
        }
    };

    async.doWhilst = function (iterator, test, callback) {
        iterator(function (err) {
            if (err) {
                return callback(err);
            }
            var args = Array.prototype.slice.call(arguments, 1);
            if (test.apply(null, args)) {
                async.doWhilst(iterator, test, callback);
            }
            else {
                callback();
            }
        });
    };

    async.until = function (test, iterator, callback) {
        if (!test()) {
            iterator(function (err) {
                if (err) {
                    return callback(err);
                }
                async.until(test, iterator, callback);
            });
        }
        else {
            callback();
        }
    };

    async.doUntil = function (iterator, test, callback) {
        iterator(function (err) {
            if (err) {
                return callback(err);
            }
            var args = Array.prototype.slice.call(arguments, 1);
            if (!test.apply(null, args)) {
                async.doUntil(iterator, test, callback);
            }
            else {
                callback();
            }
        });
    };

    async.queue = function (worker, concurrency) {
        if (concurrency === undefined) {
            concurrency = 1;
        }
        function _insert(q, data, pos, callback) {
          if (!q.started){
            q.started = true;
          }
          if (!_isArray(data)) {
              data = [data];
          }
          if(data.length == 0) {
             // call drain immediately if there are no tasks
             return async.setImmediate(function() {
                 if (q.drain) {
                     q.drain();
                 }
             });
          }
          _each(data, function(task) {
              var item = {
                  data: task,
                  callback: typeof callback === 'function' ? callback : null
              };

              if (pos) {
                q.tasks.unshift(item);
              } else {
                q.tasks.push(item);
              }

              if (q.saturated && q.tasks.length === q.concurrency) {
                  q.saturated();
              }
              async.setImmediate(q.process);
          });
        }

        var workers = 0;
        var q = {
            tasks: [],
            concurrency: concurrency,
            saturated: null,
            empty: null,
            drain: null,
            started: false,
            paused: false,
            push: function (data, callback) {
              _insert(q, data, false, callback);
            },
            kill: function () {
              q.drain = null;
              q.tasks = [];
            },
            unshift: function (data, callback) {
              _insert(q, data, true, callback);
            },
            process: function () {
                if (!q.paused && workers < q.concurrency && q.tasks.length) {
                    var task = q.tasks.shift();
                    if (q.empty && q.tasks.length === 0) {
                        q.empty();
                    }
                    workers += 1;
                    var next = function () {
                        workers -= 1;
                        if (task.callback) {
                            task.callback.apply(task, arguments);
                        }
                        if (q.drain && q.tasks.length + workers === 0) {
                            q.drain();
                        }
                        q.process();
                    };
                    var cb = only_once(next);
                    worker(task.data, cb);
                }
            },
            length: function () {
                return q.tasks.length;
            },
            running: function () {
                return workers;
            },
            idle: function() {
                return q.tasks.length + workers === 0;
            },
            pause: function () {
                if (q.paused === true) { return; }
                q.paused = true;
                q.process();
            },
            resume: function () {
                if (q.paused === false) { return; }
                q.paused = false;
                q.process();
            }
        };
        return q;
    };
    
    async.priorityQueue = function (worker, concurrency) {
        
        function _compareTasks(a, b){
          return a.priority - b.priority;
        };
        
        function _binarySearch(sequence, item, compare) {
          var beg = -1,
              end = sequence.length - 1;
          while (beg < end) {
            var mid = beg + ((end - beg + 1) >>> 1);
            if (compare(item, sequence[mid]) >= 0) {
              beg = mid;
            } else {
              end = mid - 1;
            }
          }
          return beg;
        }
        
        function _insert(q, data, priority, callback) {
          if (!q.started){
            q.started = true;
          }
          if (!_isArray(data)) {
              data = [data];
          }
          if(data.length == 0) {
             // call drain immediately if there are no tasks
             return async.setImmediate(function() {
                 if (q.drain) {
                     q.drain();
                 }
             });
          }
          _each(data, function(task) {
              var item = {
                  data: task,
                  priority: priority,
                  callback: typeof callback === 'function' ? callback : null
              };
              
              q.tasks.splice(_binarySearch(q.tasks, item, _compareTasks) + 1, 0, item);

              if (q.saturated && q.tasks.length === q.concurrency) {
                  q.saturated();
              }
              async.setImmediate(q.process);
          });
        }
        
        // Start with a normal queue
        var q = async.queue(worker, concurrency);
        
        // Override push to accept second parameter representing priority
        q.push = function (data, priority, callback) {
          _insert(q, data, priority, callback);
        };
        
        // Remove unshift function
        delete q.unshift;

        return q;
    };

    async.cargo = function (worker, payload) {
        var working     = false,
            tasks       = [];

        var cargo = {
            tasks: tasks,
            payload: payload,
            saturated: null,
            empty: null,
            drain: null,
            drained: true,
            push: function (data, callback) {
                if (!_isArray(data)) {
                    data = [data];
                }
                _each(data, function(task) {
                    tasks.push({
                        data: task,
                        callback: typeof callback === 'function' ? callback : null
                    });
                    cargo.drained = false;
                    if (cargo.saturated && tasks.length === payload) {
                        cargo.saturated();
                    }
                });
                async.setImmediate(cargo.process);
            },
            process: function process() {
                if (working) return;
                if (tasks.length === 0) {
                    if(cargo.drain && !cargo.drained) cargo.drain();
                    cargo.drained = true;
                    return;
                }

                var ts = typeof payload === 'number'
                            ? tasks.splice(0, payload)
                            : tasks.splice(0, tasks.length);

                var ds = _map(ts, function (task) {
                    return task.data;
                });

                if(cargo.empty) cargo.empty();
                working = true;
                worker(ds, function () {
                    working = false;

                    var args = arguments;
                    _each(ts, function (data) {
                        if (data.callback) {
                            data.callback.apply(null, args);
                        }
                    });

                    process();
                });
            },
            length: function () {
                return tasks.length;
            },
            running: function () {
                return working;
            }
        };
        return cargo;
    };

    var _console_fn = function (name) {
        return function (fn) {
            var args = Array.prototype.slice.call(arguments, 1);
            fn.apply(null, args.concat([function (err) {
                var args = Array.prototype.slice.call(arguments, 1);
                if (typeof console !== 'undefined') {
                    if (err) {
                        if (console.error) {
                            console.error(err);
                        }
                    }
                    else if (console[name]) {
                        _each(args, function (x) {
                            console[name](x);
                        });
                    }
                }
            }]));
        };
    };
    async.log = _console_fn('log');
    async.dir = _console_fn('dir');
    /*async.info = _console_fn('info');
    async.warn = _console_fn('warn');
    async.error = _console_fn('error');*/

    async.memoize = function (fn, hasher) {
        var memo = {};
        var queues = {};
        hasher = hasher || function (x) {
            return x;
        };
        var memoized = function () {
            var args = Array.prototype.slice.call(arguments);
            var callback = args.pop();
            var key = hasher.apply(null, args);
            if (key in memo) {
                async.nextTick(function () {
                    callback.apply(null, memo[key]);
                });
            }
            else if (key in queues) {
                queues[key].push(callback);
            }
            else {
                queues[key] = [callback];
                fn.apply(null, args.concat([function () {
                    memo[key] = arguments;
                    var q = queues[key];
                    delete queues[key];
                    for (var i = 0, l = q.length; i < l; i++) {
                      q[i].apply(null, arguments);
                    }
                }]));
            }
        };
        memoized.memo = memo;
        memoized.unmemoized = fn;
        return memoized;
    };

    async.unmemoize = function (fn) {
      return function () {
        return (fn.unmemoized || fn).apply(null, arguments);
      };
    };

    async.times = function (count, iterator, callback) {
        var counter = [];
        for (var i = 0; i < count; i++) {
            counter.push(i);
        }
        return async.map(counter, iterator, callback);
    };

    async.timesSeries = function (count, iterator, callback) {
        var counter = [];
        for (var i = 0; i < count; i++) {
            counter.push(i);
        }
        return async.mapSeries(counter, iterator, callback);
    };

    async.seq = function (/* functions... */) {
        var fns = arguments;
        return function () {
            var that = this;
            var args = Array.prototype.slice.call(arguments);
            var callback = args.pop();
            async.reduce(fns, args, function (newargs, fn, cb) {
                fn.apply(that, newargs.concat([function () {
                    var err = arguments[0];
                    var nextargs = Array.prototype.slice.call(arguments, 1);
                    cb(err, nextargs);
                }]))
            },
            function (err, results) {
                callback.apply(that, [err].concat(results));
            });
        };
    };

    async.compose = function (/* functions... */) {
      return async.seq.apply(null, Array.prototype.reverse.call(arguments));
    };

    var _applyEach = function (eachfn, fns /*args...*/) {
        var go = function () {
            var that = this;
            var args = Array.prototype.slice.call(arguments);
            var callback = args.pop();
            return eachfn(fns, function (fn, cb) {
                fn.apply(that, args.concat([cb]));
            },
            callback);
        };
        if (arguments.length > 2) {
            var args = Array.prototype.slice.call(arguments, 2);
            return go.apply(this, args);
        }
        else {
            return go;
        }
    };
    async.applyEach = doParallel(_applyEach);
    async.applyEachSeries = doSeries(_applyEach);

    async.forever = function (fn, callback) {
        function next(err) {
            if (err) {
                if (callback) {
                    return callback(err);
                }
                throw err;
            }
            fn(next);
        }
        next();
    };

    // Node.js
    if (typeof module !== 'undefined' && module.exports) {
        module.exports = async;
    }
    // AMD / RequireJS
    else if (typeof define !== 'undefined' && define.amd) {
        define([], function () {
            return async;
        });
    }
    // included directly via <script> tag
    else {
        root.async = async;
    }

}());

}).call(this,require('_process'))
},{"_process":381}],79:[function(require,module,exports){
exports['date-time'] = /^\d{4}-(?:0[0-9]{1}|1[0-2]{1})-[0-9]{2}[tT ]\d{2}:\d{2}:\d{2}(\.\d+)?([zZ]|[+-]\d{2}:\d{2})$/
exports['date'] = /^\d{4}-(?:0[0-9]{1}|1[0-2]{1})-[0-9]{2}$/
exports['time'] = /^\d{2}:\d{2}:\d{2}$/
exports['email'] = /^\S+@\S+$/
exports['ip-address'] = exports['ipv4'] = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
exports['ipv6'] = /^\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:)))(%.+)?\s*$/
exports['uri'] = /^[a-zA-Z][a-zA-Z0-9+-.]*:[^\s]*$/
exports['color'] = /(#?([0-9A-Fa-f]{3,6})\b)|(aqua)|(black)|(blue)|(fuchsia)|(gray)|(green)|(lime)|(maroon)|(navy)|(olive)|(orange)|(purple)|(red)|(silver)|(teal)|(white)|(yellow)|(rgb\(\s*\b([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\b\s*,\s*\b([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\b\s*,\s*\b([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\b\s*\))|(rgb\(\s*(\d?\d%|100%)+\s*,\s*(\d?\d%|100%)+\s*,\s*(\d?\d%|100%)+\s*\))/
exports['hostname'] = /^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$/
exports['alpha'] = /^[a-zA-Z]+$/
exports['alphanumeric'] = /^[a-zA-Z0-9]+$/
exports['style'] = /\s*(.+?):\s*([^;]+);?/g
exports['phone'] = /^\+(?:[0-9] ?){6,14}[0-9]$/
exports['utc-millisec'] = /^[0-9]+(\.?[0-9]+)?$/

},{}],80:[function(require,module,exports){
var genobj = require('generate-object-property')
var genfun = require('generate-function')
var jsonpointer = require('jsonpointer')
var xtend = require('xtend')
var formats = require('./formats')

var get = function(obj, additionalSchemas, ptr) {
  if (/^https?:\/\//.test(ptr)) return null

  var visit = function(sub) {
    if (sub && sub.id === ptr) return sub
    if (typeof sub !== 'object' || !sub) return null
    return Object.keys(sub).reduce(function(res, k) {
      return res || visit(sub[k])
    }, null)
  }

  var res = visit(obj)
  if (res) return res

  ptr = ptr.replace(/^#/, '')
  ptr = ptr.replace(/\/$/, '')

  try {
    return jsonpointer.get(obj, decodeURI(ptr))
  } catch (err) {
    var other = additionalSchemas[ptr] || additionalSchemas[ptr.replace(/^#/, '')]
    return other || null
  }
}

var formatName = function(field) {
  var pattern = /\[[^\[\]"]+\]/
  while (pattern.test(field)) field = field.replace(pattern, '.*')
  return field
}

var types = {}

types.any = function() {
  return 'true'
}

types.null = function(name) {
  return name+' === null'
}

types.boolean = function(name) {
  return 'typeof '+name+' === "boolean"'
}

types.array = function(name) {
  return 'Array.isArray('+name+')'
}

types.object = function(name) {
  return 'typeof '+name+' === "object" && '+name+' && !Array.isArray('+name+')'
}

types.number = function(name) {
  return 'typeof '+name+' === "number"'
}

types.integer = function(name) {
  return 'typeof '+name+' === "number" && (Math.floor('+name+') === '+name+' || '+name+' > 9007199254740992 || '+name+' < -9007199254740992)'
}

types.string = function(name) {
  return 'typeof '+name+' === "string"'
}

var unique = function(array) {
  var list = []
  for (var i = 0; i < array.length; i++) {
    list.push(typeof array[i] === 'object' ? JSON.stringify(array[i]) : array[i])
  }
  for (var i = 1; i < list.length; i++) {
    if (list.indexOf(list[i]) !== i) return false
  }
  return true
}

var toType = function(node) {
  return node.type
}

var compile = function(schema, cache, root, reporter, opts) {
  var fmts = opts ? xtend(formats, opts.formats) : formats
  var scope = {unique:unique, formats:fmts}
  var verbose = opts ? !!opts.verbose : false;
  var greedy = opts && opts.greedy !== undefined ?
    opts.greedy : false;

  var syms = {}
  var gensym = function(name) {
    return name+(syms[name] = (syms[name] || 0)+1)
  }

  var reversePatterns = {}
  var patterns = function(p) {
    if (reversePatterns[p]) return reversePatterns[p]
    var n = gensym('pattern')
    scope[n] = new RegExp(p)
    reversePatterns[p] = n
    return n
  }

  var vars = ['i','j','k','l','m','n','o','p','q','r','s','t','u','v','x','y','z']
  var genloop = function() {
    var v = vars.shift()
    vars.push(v+v[0])
    return v
  }

  var visit = function(name, node, reporter, filter) {
    var properties = node.properties
    var type = node.type
    var tuple = false

    if (Array.isArray(node.items)) { // tuple type
      properties = {}
      node.items.forEach(function(item, i) {
        properties[i] = item
      })
      type = 'array'
      tuple = true
    }

    var indent = 0
    var error = function(msg, prop, value) {
      validate('errors++')
      if (reporter === true) {
        validate('if (validate.errors === null) validate.errors = []')
        if (verbose) {
          validate('validate.errors.push({field:%s,message:%s,value:%s})', JSON.stringify(formatName(prop || name)), JSON.stringify(msg), value || name)
        } else {
          var n = gensym('error')
          scope[n] = {field:formatName(prop || name), message:msg}
          validate('validate.errors.push(%s)', n)
        }
      }
    }

    if (node.required === true) {
      indent++
      validate('if (%s === undefined) {', name)
      error('is required')
      validate('} else {')
    } else {
      indent++
      validate('if (%s !== undefined) {', name)
    }

    var valid = [].concat(type)
      .map(function(t) {
        return types[t || 'any'](name)
      })
      .join(' || ') || 'true'

    if (valid !== 'true') {
      indent++
      validate('if (!(%s)) {', valid)
      error('is the wrong type')
      validate('} else {')
    }

    if (tuple) {
      if (node.additionalItems === false) {
        validate('if (%s.length > %d) {', name, node.items.length)
        error('has additional items')
        validate('}')
      } else if (node.additionalItems) {
        var i = genloop()
        validate('for (var %s = %d; %s < %s.length; %s++) {', i, node.items.length, i, name, i)
        visit(name+'['+i+']', node.additionalItems, reporter, filter)
        validate('}')
      }   
    }

    if (node.format && fmts[node.format]) {
      if (type !== 'string' && formats[node.format]) validate('if (%s) {', types.string(name))
      var n = gensym('format')
      scope[n] = fmts[node.format]

      if (typeof scope[n] === 'function') validate('if (!%s(%s)) {', n, name)
      else validate('if (!%s.test(%s)) {', n, name)
      error('must be '+node.format+' format')
      validate('}')
      if (type !== 'string' && formats[node.format]) validate('}')
    }

    if (Array.isArray(node.required)) {
      var isUndefined = function(req) {
        return genobj(name, req) + ' === undefined'
      }

      var checkRequired = function (req) {
        var prop = genobj(name, req);
        validate('if (%s === undefined) {', prop)
        error('is required', prop)
        validate('missing++')
        validate('}')
      }
      validate('if ((%s)) {', type !== 'object' ? types.object(name) : 'true')
      validate('var missing = 0')
      node.required.map(checkRequired)
      validate('}');
      if (!greedy) {
        validate('if (missing === 0) {')
        indent++
      }
    }

    if (node.uniqueItems) {
      if (type !== 'array') validate('if (%s) {', types.array(name))
      validate('if (!(unique(%s))) {', name)
      error('must be unique')
      validate('}')
      if (type !== 'array') validate('}')
    }

    if (node.enum) {
      var complex = node.enum.some(function(e) {
        return typeof e === 'object'
      })

      var compare = complex ?
        function(e) {
          return 'JSON.stringify('+name+')'+' !== JSON.stringify('+JSON.stringify(e)+')'
        } :
        function(e) {
          return name+' !== '+JSON.stringify(e)
        }

      validate('if (%s) {', node.enum.map(compare).join(' && ') || 'false')
      error('must be an enum value')
      validate('}')
    }

    if (node.dependencies) {
      if (type !== 'object') validate('if (%s) {', types.object(name))

      Object.keys(node.dependencies).forEach(function(key) {
        var deps = node.dependencies[key]
        if (typeof deps === 'string') deps = [deps]

        var exists = function(k) {
          return genobj(name, k) + ' !== undefined'
        }

        if (Array.isArray(deps)) {
          validate('if (%s !== undefined && !(%s)) {', genobj(name, key), deps.map(exists).join(' && ') || 'true')
          error('dependencies not set')
          validate('}')
        }
        if (typeof deps === 'object') {
          validate('if (%s !== undefined) {', genobj(name, key))
          visit(name, deps, reporter, filter)
          validate('}')
        }
      })

      if (type !== 'object') validate('}')
    }

    if (node.additionalProperties || node.additionalProperties === false) {
      if (type !== 'object') validate('if (%s) {', types.object(name))

      var i = genloop()
      var keys = gensym('keys')

      var toCompare = function(p) {
        return keys+'['+i+'] !== '+JSON.stringify(p)
      }

      var toTest = function(p) {
        return '!'+patterns(p)+'.test('+keys+'['+i+'])'
      }

      var additionalProp = Object.keys(properties || {}).map(toCompare)
        .concat(Object.keys(node.patternProperties || {}).map(toTest))
        .join(' && ') || 'true'

      validate('var %s = Object.keys(%s)', keys, name)
        ('for (var %s = 0; %s < %s.length; %s++) {', i, i, keys, i)
          ('if (%s) {', additionalProp)

      if (node.additionalProperties === false) {
        if (filter) validate('delete %s', name+'['+keys+'['+i+']]')
        error('has additional properties', null, JSON.stringify(name+'.') + ' + ' + keys + '['+i+']')
      } else {
        visit(name+'['+keys+'['+i+']]', node.additionalProperties, reporter, filter)
      }

      validate
          ('}')
        ('}')

      if (type !== 'object') validate('}')
    }

    if (node.$ref) {
      var sub = get(root, opts && opts.schemas || {}, node.$ref)
      if (sub) {
        var fn = cache[node.$ref]
        if (!fn) {
          cache[node.$ref] = function proxy(data) {
            return fn(data)
          }
          fn = compile(sub, cache, root, false, opts)
        }
        var n = gensym('ref')
        scope[n] = fn
        validate('if (!(%s(%s))) {', n, name)
        error('referenced schema does not match')
        validate('}')
      }
    }

    if (node.not) {
      var prev = gensym('prev')
      validate('var %s = errors', prev)
      visit(name, node.not, false, filter)
      validate('if (%s === errors) {', prev)
      error('negative schema matches')
      validate('} else {')
        ('errors = %s', prev)
      ('}')
    }

    if (node.items && !tuple) {
      if (type !== 'array') validate('if (%s) {', types.array(name))

      var i = genloop()
      validate('for (var %s = 0; %s < %s.length; %s++) {', i, i, name, i)
      visit(name+'['+i+']', node.items, reporter, filter)
      validate('}')

      if (type !== 'array') validate('}')
    }

    if (node.patternProperties) {
      if (type !== 'object') validate('if (%s) {', types.object(name))
      var keys = gensym('keys')
      var i = genloop()
      validate
        ('var %s = Object.keys(%s)', keys, name)
        ('for (var %s = 0; %s < %s.length; %s++) {', i, i, keys, i)

      Object.keys(node.patternProperties).forEach(function(key) {
        var p = patterns(key)
        validate('if (%s.test(%s)) {', p, keys+'['+i+']')
        visit(name+'['+keys+'['+i+']]', node.patternProperties[key], reporter, filter)
        validate('}')
      })

      validate('}')
      if (type !== 'object') validate('}')
    }

    if (node.pattern) {
      var p = patterns(node.pattern)
      if (type !== 'string') validate('if (%s) {', types.string(name))
      validate('if (!(%s.test(%s))) {', p, name)
      error('pattern mismatch')
      validate('}')
      if (type !== 'string') validate('}')
    }

    if (node.allOf) {
      node.allOf.forEach(function(sch) {
        visit(name, sch, reporter, filter)
      })
    }

    if (node.anyOf && node.anyOf.length) {
      var prev = gensym('prev')

      node.anyOf.forEach(function(sch, i) {
        if (i === 0) {
          validate('var %s = errors', prev)
        } else {          
          validate('if (errors !== %s) {', prev)
            ('errors = %s', prev)
        }
        visit(name, sch, false, false)
      })
      node.anyOf.forEach(function(sch, i) {
        if (i) validate('}')
      })
      validate('if (%s !== errors) {', prev)
      error('no schemas match')
      validate('}')
    }

    if (node.oneOf && node.oneOf.length) {
      var prev = gensym('prev')
      var passes = gensym('passes')

      validate
        ('var %s = errors', prev)
        ('var %s = 0', passes)

      node.oneOf.forEach(function(sch, i) {
        visit(name, sch, false, false)
        validate('if (%s === errors) {', prev)
          ('%s++', passes)
        ('} else {')
          ('errors = %s', prev)
        ('}')
      })

      validate('if (%s !== 1) {', passes)
      error('no (or more than one) schemas match')
      validate('}')
    }

    if (node.multipleOf !== undefined) {
      if (type !== 'number' && type !== 'integer') validate('if (%s) {', types.number(name))

      var factor = ((node.multipleOf | 0) !== node.multipleOf) ? Math.pow(10, node.multipleOf.toString().split('.').pop().length) : 1
      if (factor > 1) validate('if ((%d*%s) % %d) {', factor, name, factor*node.multipleOf)
      else validate('if (%s % %d) {', name, node.multipleOf)

      error('has a remainder')
      validate('}')

      if (type !== 'number' && type !== 'integer') validate('}')
    }

    if (node.maxProperties !== undefined) {
      if (type !== 'object') validate('if (%s) {', types.object(name))
      
      validate('if (Object.keys(%s).length > %d) {', name, node.maxProperties)
      error('has more properties than allowed')
      validate('}')

      if (type !== 'object') validate('}')
    }

    if (node.minProperties !== undefined) {
      if (type !== 'object') validate('if (%s) {', types.object(name))
      
      validate('if (Object.keys(%s).length < %d) {', name, node.minProperties)
      error('has less properties than allowed')
      validate('}')

      if (type !== 'object') validate('}')
    }

    if (node.maxItems !== undefined) {
      if (type !== 'array') validate('if (%s) {', types.array(name))
      
      validate('if (%s.length > %d) {', name, node.maxItems)
      error('has more items than allowed')
      validate('}')

      if (type !== 'array') validate('}')
    }

    if (node.minItems !== undefined) {
      if (type !== 'array') validate('if (%s) {', types.array(name))
      
      validate('if (%s.length < %d) {', name, node.minItems)
      error('has less items than allowed')
      validate('}')

      if (type !== 'array') validate('}')
    }

    if (node.maxLength !== undefined) {
      if (type !== 'string') validate('if (%s) {', types.string(name))

      validate('if (%s.length > %d) {', name, node.maxLength)
      error('has longer length than allowed')
      validate('}')

      if (type !== 'string') validate('}')
    }

    if (node.minLength !== undefined) {
      if (type !== 'string') validate('if (%s) {', types.string(name))

      validate('if (%s.length < %d) {', name, node.minLength)
      error('has less length than allowed')
      validate('}')

      if (type !== 'string') validate('}')
    }

    if (node.minimum !== undefined) {
      validate('if (%s %s %d) {', name, node.exclusiveMinimum ? '<=' : '<', node.minimum)
      error('is less than minimum')
      validate('}')
    }

    if (node.maximum !== undefined) {
      validate('if (%s %s %d) {', name, node.exclusiveMaximum ? '>=' : '>', node.maximum)
      error('is more than maximum')
      validate('}')
    }

    if (properties) {
      Object.keys(properties).forEach(function(p) {
        visit(genobj(name, p), properties[p], reporter, filter)
      })
    }

    while (indent--) validate('}')
  }

  var validate = genfun
    ('function validate(data) {')
      ('validate.errors = null')
      ('var errors = 0')

  visit('data', schema, reporter, opts && opts.filter)

  validate
      ('return errors === 0')
    ('}')

  validate = validate.toFunction(scope)
  validate.errors = null

  validate.__defineGetter__('error', function() {
    if (!validate.errors) return ''
    return validate.errors
      .map(function(err) {
        return err.field+' '+err.message
      })
      .join('\n')
  })

  validate.toJSON = function() {
    return schema
  }

  return validate
}

module.exports = function(schema, opts) {
  if (typeof schema === 'string') schema = JSON.parse(schema)
  return compile(schema, {}, schema, true, opts)
}

module.exports.filter = function(schema, opts) {
  var validate = module.exports(schema, xtend(opts, {filter: true}))
  return function(sch) {
    validate(sch)
    return sch
  }
}

},{"./formats":79,"generate-function":81,"generate-object-property":82,"jsonpointer":84,"xtend":85}],81:[function(require,module,exports){
var util = require('util')

var INDENT_START = /[\{\[]/
var INDENT_END = /[\}\]]/

module.exports = function() {
  var lines = []
  var indent = 0

  var push = function(str) {
    var spaces = ''
    while (spaces.length < indent*2) spaces += '  '
    lines.push(spaces+str)
  }

  var line = function(fmt) {
    if (!fmt) return line

    if (INDENT_END.test(fmt.trim()[0]) && INDENT_START.test(fmt[fmt.length-1])) {
      indent--
      push(util.format.apply(util, arguments))
      indent++
      return line
    }
    if (INDENT_START.test(fmt[fmt.length-1])) {
      push(util.format.apply(util, arguments))
      indent++
      return line
    }
    if (INDENT_END.test(fmt.trim()[0])) {
      indent--
      push(util.format.apply(util, arguments))
      return line
    }

    push(util.format.apply(util, arguments))
    return line
  }

  line.toString = function() {
    return lines.join('\n')
  }

  line.toFunction = function(scope) {
    var src = 'return ('+line.toString()+')'

    var keys = Object.keys(scope || {}).map(function(key) {
      return key
    })

    var vals = keys.map(function(key) {
      return scope[key]
    })

    return Function.apply(null, keys.concat(src)).apply(null, vals)
  }

  if (arguments.length) line.apply(null, arguments)

  return line
}

},{"util":410}],82:[function(require,module,exports){
var isProperty = require('is-property')

var gen = function(obj, prop) {
  return isProperty(prop) ? obj+'.'+prop : obj+'['+JSON.stringify(prop)+']'
}

gen.valid = isProperty
module.exports = gen
},{"is-property":83}],83:[function(require,module,exports){
"use strict"
function isProperty(str) {
  return 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}
module.exports = isProperty
},{}],84:[function(require,module,exports){
var console = require("console");

var untilde = function(str) {
  return str.replace(/~./g, function(m) {
    switch (m) {
      case "~0":
        return "~";
      case "~1":
        return "/";
    }
    throw("Invalid tilde escape: " + m);
  });
}

var traverse = function(obj, pointer, value) {
  // assert(isArray(pointer))
  var part = untilde(pointer.shift());
  if(typeof obj[part] === "undefined") {
    throw("Value for pointer '" + pointer + "' not found.");
    return;
  }
  if(pointer.length !== 0) { // keep traversin!
    return traverse(obj[part], pointer, value);
  }
  // we're done
  if(typeof value === "undefined") {
    // just reading
    return obj[part];
  }
  // set new value, return old value
  var old_value = obj[part];
  if(value === null) {
    delete obj[part];
  } else {
    obj[part] = value;
  }
  return old_value;
}

var validate_input = function(obj, pointer) {
  if(typeof obj !== "object") {
    throw("Invalid input object.");
  }

  if(pointer === "") {
    return [];
  }

  if(!pointer) {
    throw("Invalid JSON pointer.");
  }

  pointer = pointer.split("/");
  var first = pointer.shift();
  if (first !== "") {
    throw("Invalid JSON pointer.");
  }

  return pointer;
}

var get = function(obj, pointer) {
  pointer = validate_input(obj, pointer);
  if (pointer.length === 0) {
    return obj;
  }
  return traverse(obj, pointer);
}

var set = function(obj, pointer, value) {
  pointer = validate_input(obj, pointer);
  if (pointer.length === 0) {
    throw("Invalid JSON pointer for set.")
  }
  return traverse(obj, pointer, value);
}

exports.get = get
exports.set = set

},{"console":181}],85:[function(require,module,exports){
module.exports = extend

function extend() {
    var target = {}

    for (var i = 0; i < arguments.length; i++) {
        var source = arguments[i]

        for (var key in source) {
            if (source.hasOwnProperty(key)) {
                target[key] = source[key]
            }
        }
    }

    return target
}

},{}],86:[function(require,module,exports){
'use strict'

function ValidationError (errors) {
  this.name = 'ValidationError'
  this.errors = errors
}

ValidationError.prototype = Error.prototype

module.exports = ValidationError

},{}],87:[function(require,module,exports){
'use strict'

var schemas = require('./schemas')
var ValidationError = require('./error')
var validator = require('is-my-json-valid')

var runner = function (schema, data, cb) {
  var validate = validator(schema, {
    greedy: true,
    verbose: true,
    schemas: schemas
  })

  var valid = false

  if (data !== undefined) {
    // execute is-my-json-valid
    valid = validate(data)
  }

  // callback?
  if (!cb) {
    return validate.errors ? false : true
  } else {
    return cb(validate.errors ? new ValidationError(validate.errors) : null, valid)
  }

  return valid
}

module.exports = function (data, cb) {
  return runner(schemas.har, data, cb)
}

Object.keys(schemas).map(function (name) {
  module.exports[name] = function (data, cb) {
    return runner(schemas[name], data, cb)
  }
})

},{"./error":86,"./schemas":95,"is-my-json-valid":80}],88:[function(require,module,exports){
module.exports={
  "properties": {
    "beforeRequest": {
      "$ref": "#cacheEntry"
    },
    "afterRequest": {
      "$ref": "#cacheEntry"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],89:[function(require,module,exports){
module.exports={
  "optional": true,
  "required": [
    "lastAccess",
    "eTag",
    "hitCount"
  ],
  "properties": {
    "expires": {
      "type": "string"
    },
    "lastAccess": {
      "type": "string"
    },
    "eTag": {
      "type": "string"
    },
    "hitCount": {
      "type": "integer"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],90:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "size",
    "mimeType"
  ],
  "properties": {
    "size": {
      "type": "integer"
    },
    "compression": {
      "type": "integer"
    },
    "mimeType": {
      "type": "string"
    },
    "text": {
      "type": "string"
    },
    "encoding": {
      "type": "string"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],91:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "name",
    "value"
  ],
  "properties": {
    "name": {
      "type": "string"
    },
    "value": {
      "type": "string"
    },
    "path": {
      "type": "string"
    },
    "domain": {
      "type": "string"
    },
    "expires": {
      "type": ["string", "null"],
      "format": "date-time"
    },
    "httpOnly": {
      "type": "boolean"
    },
    "secure": {
      "type": "boolean"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],92:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "name",
    "version"
  ],
  "properties": {
    "name": {
      "type": "string"
    },
    "version": {
      "type": "string"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],93:[function(require,module,exports){
module.exports={
  "type": "object",
  "optional": true,
  "required": [
    "startedDateTime",
    "time",
    "request",
    "response",
    "cache",
    "timings"
  ],
  "properties": {
    "pageref": {
      "type": "string"
    },
    "startedDateTime": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(\\d{4})(-)?(\\d\\d)(-)?(\\d\\d)(T)?(\\d\\d)(:)?(\\d\\d)(:)?(\\d\\d)(\\.\\d+)?(Z|([+-])(\\d\\d)(:)?(\\d\\d))"
    },
    "time": {
      "type": "number",
      "min": 0
    },
    "request": {
      "$ref": "#request"
    },
    "response": {
      "$ref": "#response"
    },
    "cache": {
      "$ref": "#cache"
    },
    "timings": {
      "$ref": "#timings"
    },
    "serverIPAddress": {
      "type": "string",
      "format": "ipv4"
    },
    "connection": {
      "type": "string"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],94:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "log"
  ],
  "properties": {
    "log": {
      "$ref": "#log"
    }
  }
}

},{}],95:[function(require,module,exports){
'use strict'

var schemas = {
  cache: require('./cache.json'),
  cacheEntry: require('./cacheEntry.json'),
  content: require('./content.json'),
  cookie: require('./cookie.json'),
  creator: require('./creator.json'),
  entry: require('./entry.json'),
  har: require('./har.json'),
  log: require('./log.json'),
  page: require('./page.json'),
  pageTimings: require('./pageTimings.json'),
  postData: require('./postData.json'),
  record: require('./record.json'),
  request: require('./request.json'),
  response: require('./response.json'),
  timings: require('./timings.json')
}

// is-my-json-valid does not provide meaningful error messages for external schemas
// this is a workaround
schemas.cache.properties.beforeRequest = schemas.cacheEntry
schemas.cache.properties.afterRequest = schemas.cacheEntry

schemas.page.properties.pageTimings = schemas.pageTimings

schemas.request.properties.cookies.items = schemas.cookie
schemas.request.properties.headers.items = schemas.record
schemas.request.properties.queryString.items = schemas.record
schemas.request.properties.postData = schemas.postData

schemas.response.properties.cookies.items = schemas.cookie
schemas.response.properties.headers.items = schemas.record
schemas.response.properties.content = schemas.content

schemas.entry.properties.request = schemas.request
schemas.entry.properties.response = schemas.response
schemas.entry.properties.cache = schemas.cache
schemas.entry.properties.timings = schemas.timings

schemas.log.properties.creator = schemas.creator
schemas.log.properties.browser = schemas.creator
schemas.log.properties.pages.items = schemas.page
schemas.log.properties.entries.items = schemas.entry

schemas.har.properties.log = schemas.log

module.exports = schemas

},{"./cache.json":88,"./cacheEntry.json":89,"./content.json":90,"./cookie.json":91,"./creator.json":92,"./entry.json":93,"./har.json":94,"./log.json":96,"./page.json":97,"./pageTimings.json":98,"./postData.json":99,"./record.json":100,"./request.json":101,"./response.json":102,"./timings.json":103}],96:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "version",
    "creator",
    "entries"
  ],
  "properties": {
    "version": {
      "type": "string"
    },
    "creator": {
      "$ref": "#creator"
    },
    "browser": {
      "$ref": "#creator"
    },
    "pages": {
      "type": "array",
      "items": {
        "$ref": "#page"
      }
    },
    "entries": {
      "type": "array",
      "items": {
        "$ref": "#entry"
      }
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],97:[function(require,module,exports){
module.exports={
  "type": "object",
  "optional": true,
  "required": [
    "startedDateTime",
    "id",
    "title",
    "pageTimings"
  ],
  "properties": {
    "startedDateTime": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(\\d{4})(-)?(\\d\\d)(-)?(\\d\\d)(T)?(\\d\\d)(:)?(\\d\\d)(:)?(\\d\\d)(\\.\\d+)?(Z|([+-])(\\d\\d)(:)?(\\d\\d))"
    },
    "id": {
      "type": "string",
      "unique": true
    },
    "title": {
      "type": "string"
    },
    "pageTimings": {
      "$ref": "#pageTimings"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],98:[function(require,module,exports){
module.exports={
  "type": "object",
  "properties": {
    "onContentLoad": {
      "type": "number",
      "min": -1
    },
    "onLoad": {
      "type": "number",
      "min": -1
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],99:[function(require,module,exports){
module.exports={
  "type": "object",
  "optional": true,
  "required": [
    "mimeType"
  ],
  "properties": {
    "mimeType": {
      "type": "string"
    },
    "text": {
      "type": "string"
    },
    "params": {
      "type": "array",
      "required": [
        "name"
      ],
      "properties": {
        "name": {
          "type": "string"
        },
        "value": {
          "type": "string"
        },
        "fileName": {
          "type": "string"
        },
        "contentType": {
          "type": "string"
        },
        "comment": {
          "type": "string"
        }
      }
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],100:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "name",
    "value"
  ],
  "properties": {
    "name": {
      "type": "string"
    },
    "value": {
      "type": "string"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],101:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "method",
    "url",
    "httpVersion",
    "cookies",
    "headers",
    "queryString",
    "headersSize",
    "bodySize"
  ],
  "properties": {
    "method": {
      "type": "string"
    },
    "url": {
      "type": "string",
      "format": "uri"
    },
    "httpVersion": {
      "type": "string"
    },
    "cookies": {
      "type": "array",
      "items": {
        "$ref": "#cookie"
      }
    },
    "headers": {
      "type": "array",
      "items": {
        "$ref": "#record"
      }
    },
    "queryString": {
      "type": "array",
      "items": {
        "$ref": "#record"
      }
    },
    "postData": {
      "$ref": "#postData"
    },
    "headersSize": {
      "type": "integer"
    },
    "bodySize": {
      "type": "integer"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],102:[function(require,module,exports){
module.exports={
  "type": "object",
  "required": [
    "status",
    "statusText",
    "httpVersion",
    "cookies",
    "headers",
    "content",
    "redirectURL",
    "headersSize",
    "bodySize"
  ],
  "properties": {
    "status": {
      "type": "integer"
    },
    "statusText": {
      "type": "string"
    },
    "httpVersion": {
      "type": "string"
    },
    "cookies": {
      "type": "array",
      "items": {
        "$ref": "#cookie"
      }
    },
    "headers": {
      "type": "array",
      "items": {
        "$ref": "#record"
      }
    },
    "content": {
      "$ref": "#content"
    },
    "redirectURL": {
      "type": "string"
    },
    "headersSize": {
      "type": "integer"
    },
    "bodySize": {
      "type": "integer"
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],103:[function(require,module,exports){
module.exports={
  "required": [
    "send",
    "wait",
    "receive"
  ],
  "properties": {
    "dns": {
      "type": "number",
      "min": -1
    },
    "connect": {
      "type": "number",
      "min": -1
    },
    "blocked": {
      "type": "number",
      "min": -1
    },
    "send": {
      "type": "number",
      "min": -1
    },
    "wait": {
      "type": "number",
      "min": -1
    },
    "receive": {
      "type": "number",
      "min": -1
    },
    "ssl": {
      "type": "number",
      "min": -1
    },
    "comment": {
      "type": "string"
    }
  }
}

},{}],104:[function(require,module,exports){
/*
    HTTP Hawk Authentication Scheme
    Copyright (c) 2012-2014, Eran Hammer <eran@hammer.io>
    BSD Licensed
*/


// Declare namespace

var hawk = {
    internals: {}
};


hawk.client = {

    // Generate an Authorization header for a given request

    /*
        uri: 'http://example.com/resource?a=b' or object generated by hawk.utils.parseUri()
        method: HTTP verb (e.g. 'GET', 'POST')
        options: {

            // Required

            credentials: {
                id: 'dh37fgj492je',
                key: 'aoijedoaijsdlaksjdl',
                algorithm: 'sha256'                                 // 'sha1', 'sha256'
            },

            // Optional

            ext: 'application-specific',                        // Application specific data sent via the ext attribute
            timestamp: Date.now() / 1000,                       // A pre-calculated timestamp in seconds
            nonce: '2334f34f',                                  // A pre-generated nonce
            localtimeOffsetMsec: 400,                           // Time offset to sync with server time (ignored if timestamp provided)
            payload: '{"some":"payload"}',                      // UTF-8 encoded string for body hash generation (ignored if hash provided)
            contentType: 'application/json',                    // Payload content-type (ignored if hash provided)
            hash: 'U4MKKSmiVxk37JCCrAVIjV=',                    // Pre-calculated payload hash
            app: '24s23423f34dx',                               // Oz application id
            dlg: '234sz34tww3sd'                                // Oz delegated-by application id
        }
    */

    header: function (uri, method, options) {

        var result = {
            field: '',
            artifacts: {}
        };

        // Validate inputs

        if (!uri || (typeof uri !== 'string' && typeof uri !== 'object') ||
            !method || typeof method !== 'string' ||
            !options || typeof options !== 'object') {

            result.err = 'Invalid argument type';
            return result;
        }

        // Application time

        var timestamp = options.timestamp || hawk.utils.now(options.localtimeOffsetMsec);

        // Validate credentials

        var credentials = options.credentials;
        if (!credentials ||
            !credentials.id ||
            !credentials.key ||
            !credentials.algorithm) {

            result.err = 'Invalid credentials object';
            return result;
        }

        if (hawk.crypto.algorithms.indexOf(credentials.algorithm) === -1) {
            result.err = 'Unknown algorithm';
            return result;
        }

        // Parse URI

        if (typeof uri === 'string') {
            uri = hawk.utils.parseUri(uri);
        }

        // Calculate signature

        var artifacts = {
            ts: timestamp,
            nonce: options.nonce || hawk.utils.randomString(6),
            method: method,
            resource: uri.relative,
            host: uri.hostname,
            port: uri.port,
            hash: options.hash,
            ext: options.ext,
            app: options.app,
            dlg: options.dlg
        };

        result.artifacts = artifacts;

        // Calculate payload hash

        if (!artifacts.hash &&
            (options.payload || options.payload === '')) {

            artifacts.hash = hawk.crypto.calculatePayloadHash(options.payload, credentials.algorithm, options.contentType);
        }

        var mac = hawk.crypto.calculateMac('header', credentials, artifacts);

        // Construct header

        var hasExt = artifacts.ext !== null && artifacts.ext !== undefined && artifacts.ext !== '';       // Other falsey values allowed
        var header = 'Hawk id="' + credentials.id +
                     '", ts="' + artifacts.ts +
                     '", nonce="' + artifacts.nonce +
                     (artifacts.hash ? '", hash="' + artifacts.hash : '') +
                     (hasExt ? '", ext="' + hawk.utils.escapeHeaderAttribute(artifacts.ext) : '') +
                     '", mac="' + mac + '"';

        if (artifacts.app) {
            header += ', app="' + artifacts.app +
                      (artifacts.dlg ? '", dlg="' + artifacts.dlg : '') + '"';
        }

        result.field = header;

        return result;
    },

    // Generate a bewit value for a given URI

    /*
        uri: 'http://example.com/resource?a=b'
        options: {

            // Required

            credentials: {
            id: 'dh37fgj492je',
            key: 'aoijedoaijsdlaksjdl',
            algorithm: 'sha256'                             // 'sha1', 'sha256'
            },
            ttlSec: 60 * 60,                                    // TTL in seconds

            // Optional

            ext: 'application-specific',                        // Application specific data sent via the ext attribute
            localtimeOffsetMsec: 400                            // Time offset to sync with server time
         };
    */

    bewit: function (uri, options) {

        // Validate inputs

        if (!uri ||
            (typeof uri !== 'string') ||
            !options ||
            typeof options !== 'object' ||
            !options.ttlSec) {

            return '';
        }

        options.ext = (options.ext === null || options.ext === undefined ? '' : options.ext);       // Zero is valid value

        // Application time

        var now = hawk.utils.now(options.localtimeOffsetMsec);

        // Validate credentials

        var credentials = options.credentials;
        if (!credentials ||
            !credentials.id ||
            !credentials.key ||
            !credentials.algorithm) {

            return '';
        }

        if (hawk.crypto.algorithms.indexOf(credentials.algorithm) === -1) {
            return '';
        }

        // Parse URI

        uri = hawk.utils.parseUri(uri);

        // Calculate signature

        var exp = now + options.ttlSec;
        var mac = hawk.crypto.calculateMac('bewit', credentials, {
            ts: exp,
            nonce: '',
            method: 'GET',
            resource: uri.relative,                            // Maintain trailing '?' and query params
            host: uri.hostname,
            port: uri.port,
            ext: options.ext
        });

        // Construct bewit: id\exp\mac\ext

        var bewit = credentials.id + '\\' + exp + '\\' + mac + '\\' + options.ext;
        return hawk.utils.base64urlEncode(bewit);
    },

    // Validate server response

    /*
        request:    object created via 'new XMLHttpRequest()' after response received
        artifacts:  object received from header().artifacts
        options: {
            payload:    optional payload received
            required:   specifies if a Server-Authorization header is required. Defaults to 'false'
        }
    */

    authenticate: function (request, credentials, artifacts, options) {

        options = options || {};

        var getHeader = function (name) {

            return request.getResponseHeader ? request.getResponseHeader(name) : request.getHeader(name);
        };

        var wwwAuthenticate = getHeader('www-authenticate');
        if (wwwAuthenticate) {

            // Parse HTTP WWW-Authenticate header

            var attributes = hawk.utils.parseAuthorizationHeader(wwwAuthenticate, ['ts', 'tsm', 'error']);
            if (!attributes) {
                return false;
            }

            if (attributes.ts) {
                var tsm = hawk.crypto.calculateTsMac(attributes.ts, credentials);
                if (tsm !== attributes.tsm) {
                    return false;
                }

                hawk.utils.setNtpOffset(attributes.ts - Math.floor((new Date()).getTime() / 1000));     // Keep offset at 1 second precision
            }
        }

        // Parse HTTP Server-Authorization header

        var serverAuthorization = getHeader('server-authorization');
        if (!serverAuthorization &&
            !options.required) {

            return true;
        }

        var attributes = hawk.utils.parseAuthorizationHeader(serverAuthorization, ['mac', 'ext', 'hash']);
        if (!attributes) {
            return false;
        }

        var modArtifacts = {
            ts: artifacts.ts,
            nonce: artifacts.nonce,
            method: artifacts.method,
            resource: artifacts.resource,
            host: artifacts.host,
            port: artifacts.port,
            hash: attributes.hash,
            ext: attributes.ext,
            app: artifacts.app,
            dlg: artifacts.dlg
        };

        var mac = hawk.crypto.calculateMac('response', credentials, modArtifacts);
        if (mac !== attributes.mac) {
            return false;
        }

        if (!options.payload &&
            options.payload !== '') {

            return true;
        }

        if (!attributes.hash) {
            return false;
        }

        var calculatedHash = hawk.crypto.calculatePayloadHash(options.payload, credentials.algorithm, getHeader('content-type'));
        return (calculatedHash === attributes.hash);
    },

    message: function (host, port, message, options) {

        // Validate inputs

        if (!host || typeof host !== 'string' ||
            !port || typeof port !== 'number' ||
            message === null || message === undefined || typeof message !== 'string' ||
            !options || typeof options !== 'object') {

            return null;
        }

        // Application time

        var timestamp = options.timestamp || hawk.utils.now(options.localtimeOffsetMsec);

        // Validate credentials

        var credentials = options.credentials;
        if (!credentials ||
            !credentials.id ||
            !credentials.key ||
            !credentials.algorithm) {

            // Invalid credential object
            return null;
        }

        if (hawk.crypto.algorithms.indexOf(credentials.algorithm) === -1) {
            return null;
        }

        // Calculate signature

        var artifacts = {
            ts: timestamp,
            nonce: options.nonce || hawk.utils.randomString(6),
            host: host,
            port: port,
            hash: hawk.crypto.calculatePayloadHash(message, credentials.algorithm)
        };

        // Construct authorization

        var result = {
            id: credentials.id,
            ts: artifacts.ts,
            nonce: artifacts.nonce,
            hash: artifacts.hash,
            mac: hawk.crypto.calculateMac('message', credentials, artifacts)
        };

        return result;
    },

    authenticateTimestamp: function (message, credentials, updateClock) {           // updateClock defaults to true

        var tsm = hawk.crypto.calculateTsMac(message.ts, credentials);
        if (tsm !== message.tsm) {
            return false;
        }

        if (updateClock !== false) {
            hawk.utils.setNtpOffset(message.ts - Math.floor((new Date()).getTime() / 1000));    // Keep offset at 1 second precision
        }

        return true;
    }
};


hawk.crypto = {

    headerVersion: '1',

    algorithms: ['sha1', 'sha256'],

    calculateMac: function (type, credentials, options) {

        var normalized = hawk.crypto.generateNormalizedString(type, options);

        var hmac = CryptoJS['Hmac' + credentials.algorithm.toUpperCase()](normalized, credentials.key);
        return hmac.toString(CryptoJS.enc.Base64);
    },

    generateNormalizedString: function (type, options) {

        var normalized = 'hawk.' + hawk.crypto.headerVersion + '.' + type + '\n' +
                         options.ts + '\n' +
                         options.nonce + '\n' +
                         (options.method || '').toUpperCase() + '\n' +
                         (options.resource || '') + '\n' +
                         options.host.toLowerCase() + '\n' +
                         options.port + '\n' +
                         (options.hash || '') + '\n';

        if (options.ext) {
            normalized += options.ext.replace('\\', '\\\\').replace('\n', '\\n');
        }

        normalized += '\n';

        if (options.app) {
            normalized += options.app + '\n' +
                          (options.dlg || '') + '\n';
        }

        return normalized;
    },

    calculatePayloadHash: function (payload, algorithm, contentType) {

        var hash = CryptoJS.algo[algorithm.toUpperCase()].create();
        hash.update('hawk.' + hawk.crypto.headerVersion + '.payload\n');
        hash.update(hawk.utils.parseContentType(contentType) + '\n');
        hash.update(payload);
        hash.update('\n');
        return hash.finalize().toString(CryptoJS.enc.Base64);
    },

    calculateTsMac: function (ts, credentials) {

        var hash = CryptoJS['Hmac' + credentials.algorithm.toUpperCase()]('hawk.' + hawk.crypto.headerVersion + '.ts\n' + ts + '\n', credentials.key);
        return hash.toString(CryptoJS.enc.Base64);
    }
};


// localStorage compatible interface

hawk.internals.LocalStorage = function () {

    this._cache = {};
    this.length = 0;

    this.getItem = function (key) {

        return this._cache.hasOwnProperty(key) ? String(this._cache[key]) : null;
    };

    this.setItem = function (key, value) {

        this._cache[key] = String(value);
        this.length = Object.keys(this._cache).length;
    };

    this.removeItem = function (key) {

        delete this._cache[key];
        this.length = Object.keys(this._cache).length;
    };

    this.clear = function () {

        this._cache = {};
        this.length = 0;
    };

    this.key = function (i) {

        return Object.keys(this._cache)[i || 0];
    };
};


hawk.utils = {

    storage: new hawk.internals.LocalStorage(),

    setStorage: function (storage) {

        var ntpOffset = hawk.utils.storage.getItem('hawk_ntp_offset');
        hawk.utils.storage = storage;
        if (ntpOffset) {
            hawk.utils.setNtpOffset(ntpOffset);
        }
    },

    setNtpOffset: function (offset) {

        try {
            hawk.utils.storage.setItem('hawk_ntp_offset', offset);
        }
        catch (err) {
            console.error('[hawk] could not write to storage.');
            console.error(err);
        }
    },

    getNtpOffset: function () {

        var offset = hawk.utils.storage.getItem('hawk_ntp_offset');
        if (!offset) {
            return 0;
        }

        return parseInt(offset, 10);
    },

    now: function (localtimeOffsetMsec) {

        return Math.floor(((new Date()).getTime() + (localtimeOffsetMsec || 0)) / 1000) + hawk.utils.getNtpOffset();
    },

    escapeHeaderAttribute: function (attribute) {

        return attribute.replace(/\\/g, '\\\\').replace(/\"/g, '\\"');
    },

    parseContentType: function (header) {

        if (!header) {
            return '';
        }

        return header.split(';')[0].replace(/^\s+|\s+$/g, '').toLowerCase();
    },

    parseAuthorizationHeader: function (header, keys) {

        if (!header) {
            return null;
        }

        var headerParts = header.match(/^(\w+)(?:\s+(.*))?$/);       // Header: scheme[ something]
        if (!headerParts) {
            return null;
        }

        var scheme = headerParts[1];
        if (scheme.toLowerCase() !== 'hawk') {
            return null;
        }

        var attributesString = headerParts[2];
        if (!attributesString) {
            return null;
        }

        var attributes = {};
        var verify = attributesString.replace(/(\w+)="([^"\\]*)"\s*(?:,\s*|$)/g, function ($0, $1, $2) {

            // Check valid attribute names

            if (keys.indexOf($1) === -1) {
                return;
            }

            // Allowed attribute value characters: !#$%&'()*+,-./:;<=>?@[]^_`{|}~ and space, a-z, A-Z, 0-9

            if ($2.match(/^[ \w\!#\$%&'\(\)\*\+,\-\.\/\:;<\=>\?@\[\]\^`\{\|\}~]+$/) === null) {
                return;
            }

            // Check for duplicates

            if (attributes.hasOwnProperty($1)) {
                return;
            }

            attributes[$1] = $2;
            return '';
        });

        if (verify !== '') {
            return null;
        }

        return attributes;
    },

    randomString: function (size) {

        var randomSource = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
        var len = randomSource.length;

        var result = [];
        for (var i = 0; i < size; ++i) {
            result[i] = randomSource[Math.floor(Math.random() * len)];
        }

        return result.join('');
    },

    parseUri: function (input) {

        // Based on: parseURI 1.2.2
        // http://blog.stevenlevithan.com/archives/parseuri
        // (c) Steven Levithan <stevenlevithan.com>
        // MIT License

        var keys = ['source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'hostname', 'port', 'resource', 'relative', 'pathname', 'directory', 'file', 'query', 'fragment'];

        var uriRegex = /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?(((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?)(?:#(.*))?)/;
        var uriByNumber = input.match(uriRegex);
        var uri = {};

        for (var i = 0, il = keys.length; i < il; ++i) {
            uri[keys[i]] = uriByNumber[i] || '';
        }

        if (uri.port === '') {
            uri.port = (uri.protocol.toLowerCase() === 'http' ? '80' : (uri.protocol.toLowerCase() === 'https' ? '443' : ''));
        }

        return uri;
    },

    base64urlEncode: function (value) {

        var wordArray = CryptoJS.enc.Utf8.parse(value);
        var encoded = CryptoJS.enc.Base64.stringify(wordArray);
        return encoded.replace(/\+/g, '-').replace(/\//g, '_').replace(/\=/g, '');
    }
};


// $lab:coverage:off$

// Based on: Crypto-JS v3.1.2
// Copyright (c) 2009-2013, Jeff Mott. All rights reserved.
// http://code.google.com/p/crypto-js/
// http://code.google.com/p/crypto-js/wiki/License

var CryptoJS = CryptoJS || function (h, r) { var k = {}, l = k.lib = {}, n = function () { }, f = l.Base = { extend: function (a) { n.prototype = this; var b = new n; a && b.mixIn(a); b.hasOwnProperty("init") || (b.init = function () { b.$super.init.apply(this, arguments) }); b.init.prototype = b; b.$super = this; return b }, create: function () { var a = this.extend(); a.init.apply(a, arguments); return a }, init: function () { }, mixIn: function (a) { for (var b in a) a.hasOwnProperty(b) && (this[b] = a[b]); a.hasOwnProperty("toString") && (this.toString = a.toString) }, clone: function () { return this.init.prototype.extend(this) } }, j = l.WordArray = f.extend({ init: function (a, b) { a = this.words = a || []; this.sigBytes = b != r ? b : 4 * a.length }, toString: function (a) { return (a || s).stringify(this) }, concat: function (a) { var b = this.words, d = a.words, c = this.sigBytes; a = a.sigBytes; this.clamp(); if (c % 4) for (var e = 0; e < a; e++) b[c + e >>> 2] |= (d[e >>> 2] >>> 24 - 8 * (e % 4) & 255) << 24 - 8 * ((c + e) % 4); else if (65535 < d.length) for (e = 0; e < a; e += 4) b[c + e >>> 2] = d[e >>> 2]; else b.push.apply(b, d); this.sigBytes += a; return this }, clamp: function () { var a = this.words, b = this.sigBytes; a[b >>> 2] &= 4294967295 << 32 - 8 * (b % 4); a.length = h.ceil(b / 4) }, clone: function () { var a = f.clone.call(this); a.words = this.words.slice(0); return a }, random: function (a) { for (var b = [], d = 0; d < a; d += 4) b.push(4294967296 * h.random() | 0); return new j.init(b, a) } }), m = k.enc = {}, s = m.Hex = { stringify: function (a) { var b = a.words; a = a.sigBytes; for (var d = [], c = 0; c < a; c++) { var e = b[c >>> 2] >>> 24 - 8 * (c % 4) & 255; d.push((e >>> 4).toString(16)); d.push((e & 15).toString(16)) } return d.join("") }, parse: function (a) { for (var b = a.length, d = [], c = 0; c < b; c += 2) d[c >>> 3] |= parseInt(a.substr(c, 2), 16) << 24 - 4 * (c % 8); return new j.init(d, b / 2) } }, p = m.Latin1 = { stringify: function (a) { var b = a.words; a = a.sigBytes; for (var d = [], c = 0; c < a; c++) d.push(String.fromCharCode(b[c >>> 2] >>> 24 - 8 * (c % 4) & 255)); return d.join("") }, parse: function (a) { for (var b = a.length, d = [], c = 0; c < b; c++) d[c >>> 2] |= (a.charCodeAt(c) & 255) << 24 - 8 * (c % 4); return new j.init(d, b) } }, t = m.Utf8 = { stringify: function (a) { try { return decodeURIComponent(escape(p.stringify(a))) } catch (b) { throw Error("Malformed UTF-8 data"); } }, parse: function (a) { return p.parse(unescape(encodeURIComponent(a))) } }, q = l.BufferedBlockAlgorithm = f.extend({ reset: function () { this._data = new j.init; this._nDataBytes = 0 }, _append: function (a) { "string" == typeof a && (a = t.parse(a)); this._data.concat(a); this._nDataBytes += a.sigBytes }, _process: function (a) { var b = this._data, d = b.words, c = b.sigBytes, e = this.blockSize, f = c / (4 * e), f = a ? h.ceil(f) : h.max((f | 0) - this._minBufferSize, 0); a = f * e; c = h.min(4 * a, c); if (a) { for (var g = 0; g < a; g += e) this._doProcessBlock(d, g); g = d.splice(0, a); b.sigBytes -= c } return new j.init(g, c) }, clone: function () { var a = f.clone.call(this); a._data = this._data.clone(); return a }, _minBufferSize: 0 }); l.Hasher = q.extend({ cfg: f.extend(), init: function (a) { this.cfg = this.cfg.extend(a); this.reset() }, reset: function () { q.reset.call(this); this._doReset() }, update: function (a) { this._append(a); this._process(); return this }, finalize: function (a) { a && this._append(a); return this._doFinalize() }, blockSize: 16, _createHelper: function (a) { return function (b, d) { return (new a.init(d)).finalize(b) } }, _createHmacHelper: function (a) { return function (b, d) { return (new u.HMAC.init(a, d)).finalize(b) } } }); var u = k.algo = {}; return k }(Math);
(function () { var k = CryptoJS, b = k.lib, m = b.WordArray, l = b.Hasher, d = [], b = k.algo.SHA1 = l.extend({ _doReset: function () { this._hash = new m.init([1732584193, 4023233417, 2562383102, 271733878, 3285377520]) }, _doProcessBlock: function (n, p) { for (var a = this._hash.words, e = a[0], f = a[1], h = a[2], j = a[3], b = a[4], c = 0; 80 > c; c++) { if (16 > c) d[c] = n[p + c] | 0; else { var g = d[c - 3] ^ d[c - 8] ^ d[c - 14] ^ d[c - 16]; d[c] = g << 1 | g >>> 31 } g = (e << 5 | e >>> 27) + b + d[c]; g = 20 > c ? g + ((f & h | ~f & j) + 1518500249) : 40 > c ? g + ((f ^ h ^ j) + 1859775393) : 60 > c ? g + ((f & h | f & j | h & j) - 1894007588) : g + ((f ^ h ^ j) - 899497514); b = j; j = h; h = f << 30 | f >>> 2; f = e; e = g } a[0] = a[0] + e | 0; a[1] = a[1] + f | 0; a[2] = a[2] + h | 0; a[3] = a[3] + j | 0; a[4] = a[4] + b | 0 }, _doFinalize: function () { var b = this._data, d = b.words, a = 8 * this._nDataBytes, e = 8 * b.sigBytes; d[e >>> 5] |= 128 << 24 - e % 32; d[(e + 64 >>> 9 << 4) + 14] = Math.floor(a / 4294967296); d[(e + 64 >>> 9 << 4) + 15] = a; b.sigBytes = 4 * d.length; this._process(); return this._hash }, clone: function () { var b = l.clone.call(this); b._hash = this._hash.clone(); return b } }); k.SHA1 = l._createHelper(b); k.HmacSHA1 = l._createHmacHelper(b) })();
(function (k) { for (var g = CryptoJS, h = g.lib, v = h.WordArray, j = h.Hasher, h = g.algo, s = [], t = [], u = function (q) { return 4294967296 * (q - (q | 0)) | 0 }, l = 2, b = 0; 64 > b;) { var d; a: { d = l; for (var w = k.sqrt(d), r = 2; r <= w; r++) if (!(d % r)) { d = !1; break a } d = !0 } d && (8 > b && (s[b] = u(k.pow(l, 0.5))), t[b] = u(k.pow(l, 1 / 3)), b++); l++ } var n = [], h = h.SHA256 = j.extend({ _doReset: function () { this._hash = new v.init(s.slice(0)) }, _doProcessBlock: function (q, h) { for (var a = this._hash.words, c = a[0], d = a[1], b = a[2], k = a[3], f = a[4], g = a[5], j = a[6], l = a[7], e = 0; 64 > e; e++) { if (16 > e) n[e] = q[h + e] | 0; else { var m = n[e - 15], p = n[e - 2]; n[e] = ((m << 25 | m >>> 7) ^ (m << 14 | m >>> 18) ^ m >>> 3) + n[e - 7] + ((p << 15 | p >>> 17) ^ (p << 13 | p >>> 19) ^ p >>> 10) + n[e - 16] } m = l + ((f << 26 | f >>> 6) ^ (f << 21 | f >>> 11) ^ (f << 7 | f >>> 25)) + (f & g ^ ~f & j) + t[e] + n[e]; p = ((c << 30 | c >>> 2) ^ (c << 19 | c >>> 13) ^ (c << 10 | c >>> 22)) + (c & d ^ c & b ^ d & b); l = j; j = g; g = f; f = k + m | 0; k = b; b = d; d = c; c = m + p | 0 } a[0] = a[0] + c | 0; a[1] = a[1] + d | 0; a[2] = a[2] + b | 0; a[3] = a[3] + k | 0; a[4] = a[4] + f | 0; a[5] = a[5] + g | 0; a[6] = a[6] + j | 0; a[7] = a[7] + l | 0 }, _doFinalize: function () { var d = this._data, b = d.words, a = 8 * this._nDataBytes, c = 8 * d.sigBytes; b[c >>> 5] |= 128 << 24 - c % 32; b[(c + 64 >>> 9 << 4) + 14] = k.floor(a / 4294967296); b[(c + 64 >>> 9 << 4) + 15] = a; d.sigBytes = 4 * b.length; this._process(); return this._hash }, clone: function () { var b = j.clone.call(this); b._hash = this._hash.clone(); return b } }); g.SHA256 = j._createHelper(h); g.HmacSHA256 = j._createHmacHelper(h) })(Math);
(function () { var c = CryptoJS, k = c.enc.Utf8; c.algo.HMAC = c.lib.Base.extend({ init: function (a, b) { a = this._hasher = new a.init; "string" == typeof b && (b = k.parse(b)); var c = a.blockSize, e = 4 * c; b.sigBytes > e && (b = a.finalize(b)); b.clamp(); for (var f = this._oKey = b.clone(), g = this._iKey = b.clone(), h = f.words, j = g.words, d = 0; d < c; d++) h[d] ^= 1549556828, j[d] ^= 909522486; f.sigBytes = g.sigBytes = e; this.reset() }, reset: function () { var a = this._hasher; a.reset(); a.update(this._iKey) }, update: function (a) { this._hasher.update(a); return this }, finalize: function (a) { var b = this._hasher; a = b.finalize(a); b.reset(); return b.finalize(this._oKey.clone().concat(a)) } }) })();
(function () { var h = CryptoJS, j = h.lib.WordArray; h.enc.Base64 = { stringify: function (b) { var e = b.words, f = b.sigBytes, c = this._map; b.clamp(); b = []; for (var a = 0; a < f; a += 3) for (var d = (e[a >>> 2] >>> 24 - 8 * (a % 4) & 255) << 16 | (e[a + 1 >>> 2] >>> 24 - 8 * ((a + 1) % 4) & 255) << 8 | e[a + 2 >>> 2] >>> 24 - 8 * ((a + 2) % 4) & 255, g = 0; 4 > g && a + 0.75 * g < f; g++) b.push(c.charAt(d >>> 6 * (3 - g) & 63)); if (e = c.charAt(64)) for (; b.length % 4;) b.push(e); return b.join("") }, parse: function (b) { var e = b.length, f = this._map, c = f.charAt(64); c && (c = b.indexOf(c), -1 != c && (e = c)); for (var c = [], a = 0, d = 0; d < e; d++) if (d % 4) { var g = f.indexOf(b.charAt(d - 1)) << 2 * (d % 4), h = f.indexOf(b.charAt(d)) >>> 6 - 2 * (d % 4); c[a >>> 2] |= (g | h) << 24 - 8 * (a % 4); a++ } return j.create(c, a) }, _map: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=" } })();

hawk.crypto.internals = CryptoJS;


// Export if used as a module

if (typeof module !== 'undefined' && module.exports) {
    module.exports = hawk;
}

// $lab:coverage:on$

},{}],105:[function(require,module,exports){
// Copyright 2011 Joyent, Inc.  All rights reserved.

var parser = require('./parser');
var signer = require('./signer');
var verify = require('./verify');
var util = require('./util');



///--- API

module.exports = {

  parse: parser.parseRequest,
  parseRequest: parser.parseRequest,

  sign: signer.signRequest,
  signRequest: signer.signRequest,

  sshKeyToPEM: util.sshKeyToPEM,
  sshKeyFingerprint: util.fingerprint,
  pemToRsaSSHKey: util.pemToRsaSSHKey,

  verify: verify.verifySignature,
  verifySignature: verify.verifySignature
};

},{"./parser":106,"./signer":107,"./util":108,"./verify":109}],106:[function(require,module,exports){
// Copyright 2012 Joyent, Inc.  All rights reserved.

var assert = require('assert-plus');
var util = require('util');



///--- Globals

var Algorithms = {
  'rsa-sha1': true,
  'rsa-sha256': true,
  'rsa-sha512': true,
  'dsa-sha1': true,
  'hmac-sha1': true,
  'hmac-sha256': true,
  'hmac-sha512': true
};

var State = {
  New: 0,
  Params: 1
};

var ParamsState = {
  Name: 0,
  Quote: 1,
  Value: 2,
  Comma: 3
};



///--- Specific Errors

function HttpSignatureError(message, caller) {
  if (Error.captureStackTrace)
    Error.captureStackTrace(this, caller || HttpSignatureError);

  this.message = message;
  this.name = caller.name;
}
util.inherits(HttpSignatureError, Error);

function ExpiredRequestError(message) {
  HttpSignatureError.call(this, message, ExpiredRequestError);
}
util.inherits(ExpiredRequestError, HttpSignatureError);


function InvalidHeaderError(message) {
  HttpSignatureError.call(this, message, InvalidHeaderError);
}
util.inherits(InvalidHeaderError, HttpSignatureError);


function InvalidParamsError(message) {
  HttpSignatureError.call(this, message, InvalidParamsError);
}
util.inherits(InvalidParamsError, HttpSignatureError);


function MissingHeaderError(message) {
  HttpSignatureError.call(this, message, MissingHeaderError);
}
util.inherits(MissingHeaderError, HttpSignatureError);



///--- Exported API

module.exports = {

  /**
   * Parses the 'Authorization' header out of an http.ServerRequest object.
   *
   * Note that this API will fully validate the Authorization header, and throw
   * on any error.  It will not however check the signature, or the keyId format
   * as those are specific to your environment.  You can use the options object
   * to pass in extra constraints.
   *
   * As a response object you can expect this:
   *
   *     {
   *       "scheme": "Signature",
   *       "params": {
   *         "keyId": "foo",
   *         "algorithm": "rsa-sha256",
   *         "headers": [
   *           "date" or "x-date",
   *           "content-md5"
   *         ],
   *         "signature": "base64"
   *       },
   *       "signingString": "ready to be passed to crypto.verify()"
   *     }
   *
   * @param {Object} request an http.ServerRequest.
   * @param {Object} options an optional options object with:
   *                   - clockSkew: allowed clock skew in seconds (default 300).
   *                   - headers: required header names (def: date or x-date)
   *                   - algorithms: algorithms to support (default: all).
   * @return {Object} parsed out object (see above).
   * @throws {TypeError} on invalid input.
   * @throws {InvalidHeaderError} on an invalid Authorization header error.
   * @throws {InvalidParamsError} if the params in the scheme are invalid.
   * @throws {MissingHeaderError} if the params indicate a header not present,
   *                              either in the request headers from the params,
   *                              or not in the params from a required header
   *                              in options.
   * @throws {ExpiredRequestError} if the value of date or x-date exceeds skew.
   */
  parseRequest: function parseRequest(request, options) {
    assert.object(request, 'request');
    assert.object(request.headers, 'request.headers');
    if (options === undefined) {
      options = {};
    }
    if (options.headers === undefined) {
      options.headers = [request.headers['x-date'] ? 'x-date' : 'date'];
    }
    assert.object(options, 'options');
    assert.arrayOfString(options.headers, 'options.headers');
    assert.optionalNumber(options.clockSkew, 'options.clockSkew');

    if (!request.headers.authorization)
      throw new MissingHeaderError('no authorization header present in ' +
                                   'the request');

    options.clockSkew = options.clockSkew || 300;


    var i = 0;
    var state = State.New;
    var substate = ParamsState.Name;
    var tmpName = '';
    var tmpValue = '';

    var parsed = {
      scheme: '',
      params: {},
      signingString: '',

      get algorithm() {
        return this.params.algorithm.toUpperCase();
      },

      get keyId() {
        return this.params.keyId;
      }

    };

    var authz = request.headers.authorization;
    for (i = 0; i < authz.length; i++) {
      var c = authz.charAt(i);

      switch (Number(state)) {

      case State.New:
        if (c !== ' ') parsed.scheme += c;
        else state = State.Params;
        break;

      case State.Params:
        switch (Number(substate)) {

        case ParamsState.Name:
          var code = c.charCodeAt(0);
          // restricted name of A-Z / a-z
          if ((code >= 0x41 && code <= 0x5a) || // A-Z
              (code >= 0x61 && code <= 0x7a)) { // a-z
            tmpName += c;
          } else if (c === '=') {
            if (tmpName.length === 0)
              throw new InvalidHeaderError('bad param format');
            substate = ParamsState.Quote;
          } else {
            throw new InvalidHeaderError('bad param format');
          }
          break;

        case ParamsState.Quote:
          if (c === '"') {
            tmpValue = '';
            substate = ParamsState.Value;
          } else {
            throw new InvalidHeaderError('bad param format');
          }
          break;

        case ParamsState.Value:
          if (c === '"') {
            parsed.params[tmpName] = tmpValue;
            substate = ParamsState.Comma;
          } else {
            tmpValue += c;
          }
          break;

        case ParamsState.Comma:
          if (c === ',') {
            tmpName = '';
            substate = ParamsState.Name;
          } else {
            throw new InvalidHeaderError('bad param format');
          }
          break;

        default:
          throw new Error('Invalid substate');
        }
        break;

      default:
        throw new Error('Invalid substate');
      }

    }

    if (!parsed.params.headers || parsed.params.headers === '') {
      if (request.headers['x-date']) {
        parsed.params.headers = ['x-date'];
      } else {
        parsed.params.headers = ['date'];
      }
    } else {
      parsed.params.headers = parsed.params.headers.split(' ');
    }

    // Minimally validate the parsed object
    if (!parsed.scheme || parsed.scheme !== 'Signature')
      throw new InvalidHeaderError('scheme was not "Signature"');

    if (!parsed.params.keyId)
      throw new InvalidHeaderError('keyId was not specified');

    if (!parsed.params.algorithm)
      throw new InvalidHeaderError('algorithm was not specified');

    if (!parsed.params.signature)
      throw new InvalidHeaderError('signature was not specified');

    // Check the algorithm against the official list
    parsed.params.algorithm = parsed.params.algorithm.toLowerCase();
    if (!Algorithms[parsed.params.algorithm])
      throw new InvalidParamsError(parsed.params.algorithm +
                                   ' is not supported');

    // Build the signingString
    for (i = 0; i < parsed.params.headers.length; i++) {
      var h = parsed.params.headers[i].toLowerCase();
      parsed.params.headers[i] = h;

      if (h !== 'request-line') {
        var value = request.headers[h];
        if (!value)
          throw new MissingHeaderError(h + ' was not in the request');
        parsed.signingString += h + ': ' + value;
      } else {
        parsed.signingString +=
          request.method + ' ' + request.url + ' HTTP/' + request.httpVersion;
      }

      if ((i + 1) < parsed.params.headers.length)
        parsed.signingString += '\n';
    }

    // Check against the constraints
    var date;
    if (request.headers.date || request.headers['x-date']) {
        if (request.headers['x-date']) {
          date = new Date(request.headers['x-date']);
        } else {
          date = new Date(request.headers.date);
        }
      var now = new Date();
      var skew = Math.abs(now.getTime() - date.getTime());

      if (skew > options.clockSkew * 1000) {
        throw new ExpiredRequestError('clock skew of ' +
                                      (skew / 1000) +
                                      's was greater than ' +
                                      options.clockSkew + 's');
      }
    }

    options.headers.forEach(function (hdr) {
      // Remember that we already checked any headers in the params
      // were in the request, so if this passes we're good.
      if (parsed.params.headers.indexOf(hdr) < 0)
        throw new MissingHeaderError(hdr + ' was not a signed header');
    });

    if (options.algorithms) {
      if (options.algorithms.indexOf(parsed.params.algorithm) === -1)
        throw new InvalidParamsError(parsed.params.algorithm +
                                     ' is not a supported algorithm');
    }

    return parsed;
  }

};

},{"assert-plus":116,"util":410}],107:[function(require,module,exports){
// Copyright 2012 Joyent, Inc.  All rights reserved.

var assert = require('assert-plus');
var crypto = require('crypto');
var http = require('http');

var sprintf = require('util').format;



///--- Globals

var Algorithms = {
  'rsa-sha1': true,
  'rsa-sha256': true,
  'rsa-sha512': true,
  'dsa-sha1': true,
  'hmac-sha1': true,
  'hmac-sha256': true,
  'hmac-sha512': true
};

var Authorization =
  'Signature keyId="%s",algorithm="%s",headers="%s",signature="%s"';



///--- Specific Errors

function MissingHeaderError(message) {
    this.name = 'MissingHeaderError';
    this.message = message;
    this.stack = (new Error()).stack;
}
MissingHeaderError.prototype = new Error();


function InvalidAlgorithmError(message) {
    this.name = 'InvalidAlgorithmError';
    this.message = message;
    this.stack = (new Error()).stack;
}
InvalidAlgorithmError.prototype = new Error();



///--- Internal Functions

function _pad(val) {
  if (parseInt(val, 10) < 10) {
    val = '0' + val;
  }
  return val;
}


function _rfc1123() {
  var date = new Date();

  var months = ['Jan',
                'Feb',
                'Mar',
                'Apr',
                'May',
                'Jun',
                'Jul',
                'Aug',
                'Sep',
                'Oct',
                'Nov',
                'Dec'];
  var days = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
  return days[date.getUTCDay()] + ', ' +
    _pad(date.getUTCDate()) + ' ' +
    months[date.getUTCMonth()] + ' ' +
    date.getUTCFullYear() + ' ' +
    _pad(date.getUTCHours()) + ':' +
    _pad(date.getUTCMinutes()) + ':' +
    _pad(date.getUTCSeconds()) +
    ' GMT';
}



///--- Exported API

module.exports = {

  /**
   * Adds an 'Authorization' header to an http.ClientRequest object.
   *
   * Note that this API will add a Date header if it's not already set. Any
   * other headers in the options.headers array MUST be present, or this
   * will throw.
   *
   * You shouldn't need to check the return type; it's just there if you want
   * to be pedantic.
   *
   * @param {Object} request an instance of http.ClientRequest.
   * @param {Object} options signing parameters object:
   *                   - {String} keyId required.
   *                   - {String} key required (either a PEM or HMAC key).
   *                   - {Array} headers optional; defaults to ['date'].
   *                   - {String} algorithm optional; defaults to 'rsa-sha256'.
   *                   - {String} httpVersion optional; defaults to '1.1'.
   * @return {Boolean} true if Authorization (and optionally Date) were added.
   * @throws {TypeError} on bad parameter types (input).
   * @throws {InvalidAlgorithmError} if algorithm was bad.
   * @throws {MissingHeaderError} if a header to be signed was specified but
   *                              was not present.
   */
  signRequest: function signRequest(request, options) {
    assert.object(request, 'request');
    assert.object(options, 'options');
    assert.optionalString(options.algorithm, 'options.algorithm');
    assert.string(options.keyId, 'options.keyId');
    assert.optionalArrayOfString(options.headers, 'options.headers');
    assert.optionalString(options.httpVersion, 'options.httpVersion');

    if (!request.getHeader('Date'))
      request.setHeader('Date', _rfc1123());
    if (!options.headers)
      options.headers = ['date'];
    if (!options.algorithm)
      options.algorithm = 'rsa-sha256';
    if (!options.httpVersion)
      options.httpVersion = '1.1';

    options.algorithm = options.algorithm.toLowerCase();

    if (!Algorithms[options.algorithm])
      throw new InvalidAlgorithmError(options.algorithm + ' is not supported');

    var i;
    var stringToSign = '';
    for (i = 0; i < options.headers.length; i++) {
      if (typeof (options.headers[i]) !== 'string')
        throw new TypeError('options.headers must be an array of Strings');

      var h = options.headers[i].toLowerCase();

      if (h !== 'request-line') {
        var value = request.getHeader(h);
        if (!value) {
          throw new MissingHeaderError(h + ' was not in the request');
        }
        stringToSign += h + ': ' + value;
      } else {
        stringToSign +=
          request.method + ' ' + request.path + ' HTTP/' + options.httpVersion;
      }

      if ((i + 1) < options.headers.length)
        stringToSign += '\n';
    }

    var alg = options.algorithm.match(/(hmac|rsa)-(\w+)/);
    var signature;
    if (alg[1] === 'hmac') {
      var hmac = crypto.createHmac(alg[2].toUpperCase(), options.key);
      hmac.update(stringToSign);
      signature = hmac.digest('base64');
    } else {
      var signer = crypto.createSign(options.algorithm.toUpperCase());
      signer.update(stringToSign);
      signature = signer.sign(options.key, 'base64');
    }

    request.setHeader('Authorization', sprintf(Authorization,
                                               options.keyId,
                                               options.algorithm,
                                               options.headers.join(' '),
                                               signature));

    return true;
  }

};

},{"assert-plus":116,"crypto":183,"http":400,"util":410}],108:[function(require,module,exports){
(function (Buffer){
// Copyright 2012 Joyent, Inc.  All rights reserved.

var assert = require('assert-plus');
var crypto = require('crypto');

var asn1 = require('asn1');
var ctype = require('ctype');



///--- Helpers

function readNext(buffer, offset) {
  var len = ctype.ruint32(buffer, 'big', offset);
  offset += 4;

  var newOffset = offset + len;

  return {
    data: buffer.slice(offset, newOffset),
    offset: newOffset
  };
}


function writeInt(writer, buffer) {
  writer.writeByte(0x02); // ASN1.Integer
  writer.writeLength(buffer.length);

  for (var i = 0; i < buffer.length; i++)
    writer.writeByte(buffer[i]);

  return writer;
}


function rsaToPEM(key) {
  var buffer;
  var der;
  var exponent;
  var i;
  var modulus;
  var newKey = '';
  var offset = 0;
  var type;
  var tmp;

  try {
    buffer = new Buffer(key.split(' ')[1], 'base64');

    tmp = readNext(buffer, offset);
    type = tmp.data.toString();
    offset = tmp.offset;

    if (type !== 'ssh-rsa')
      throw new Error('Invalid ssh key type: ' + type);

    tmp = readNext(buffer, offset);
    exponent = tmp.data;
    offset = tmp.offset;

    tmp = readNext(buffer, offset);
    modulus = tmp.data;
  } catch (e) {
    throw new Error('Invalid ssh key: ' + key);
  }

  // DER is a subset of BER
  der = new asn1.BerWriter();

  der.startSequence();

  der.startSequence();
  der.writeOID('1.2.840.113549.1.1.1');
  der.writeNull();
  der.endSequence();

  der.startSequence(0x03); // bit string
  der.writeByte(0x00);

  // Actual key
  der.startSequence();
  writeInt(der, modulus);
  writeInt(der, exponent);
  der.endSequence();

  // bit string
  der.endSequence();

  der.endSequence();

  tmp = der.buffer.toString('base64');
  for (i = 0; i < tmp.length; i++) {
    if ((i % 64) === 0)
      newKey += '\n';
    newKey += tmp.charAt(i);
  }

  if (!/\\n$/.test(newKey))
    newKey += '\n';

  return '-----BEGIN PUBLIC KEY-----' + newKey + '-----END PUBLIC KEY-----\n';
}


function dsaToPEM(key) {
  var buffer;
  var offset = 0;
  var tmp;
  var der;
  var newKey = '';

  var type;
  var p;
  var q;
  var g;
  var y;

  try {
    buffer = new Buffer(key.split(' ')[1], 'base64');

    tmp = readNext(buffer, offset);
    type = tmp.data.toString();
    offset = tmp.offset;

    /* JSSTYLED */
    if (!/^ssh-ds[as].*/.test(type))
      throw new Error('Invalid ssh key type: ' + type);

    tmp = readNext(buffer, offset);
    p = tmp.data;
    offset = tmp.offset;

    tmp = readNext(buffer, offset);
    q = tmp.data;
    offset = tmp.offset;

    tmp = readNext(buffer, offset);
    g = tmp.data;
    offset = tmp.offset;

    tmp = readNext(buffer, offset);
    y = tmp.data;
  } catch (e) {
    console.log(e.stack);
    throw new Error('Invalid ssh key: ' + key);
  }

  // DER is a subset of BER
  der = new asn1.BerWriter();

  der.startSequence();

  der.startSequence();
  der.writeOID('1.2.840.10040.4.1');

  der.startSequence();
  writeInt(der, p);
  writeInt(der, q);
  writeInt(der, g);
  der.endSequence();

  der.endSequence();

  der.startSequence(0x03); // bit string
  der.writeByte(0x00);
  writeInt(der, y);
  der.endSequence();

  der.endSequence();

  tmp = der.buffer.toString('base64');
  for (var i = 0; i < tmp.length; i++) {
    if ((i % 64) === 0)
      newKey += '\n';
    newKey += tmp.charAt(i);
  }

  if (!/\\n$/.test(newKey))
    newKey += '\n';

  return '-----BEGIN PUBLIC KEY-----' + newKey + '-----END PUBLIC KEY-----\n';
}


///--- API

module.exports = {

  /**
   * Converts an OpenSSH public key (rsa only) to a PKCS#8 PEM file.
   *
   * The intent of this module is to interoperate with OpenSSL only,
   * specifically the node crypto module's `verify` method.
   *
   * @param {String} key an OpenSSH public key.
   * @return {String} PEM encoded form of the RSA public key.
   * @throws {TypeError} on bad input.
   * @throws {Error} on invalid ssh key formatted data.
   */
  sshKeyToPEM: function sshKeyToPEM(key) {
    assert.string(key, 'ssh_key');

    /* JSSTYLED */
    if (/^ssh-rsa.*/.test(key))
      return rsaToPEM(key);

    /* JSSTYLED */
    if (/^ssh-ds[as].*/.test(key))
      return dsaToPEM(key);

    throw new Error('Only RSA and DSA public keys are allowed');
  },


  /**
   * Generates an OpenSSH fingerprint from an ssh public key.
   *
   * @param {String} key an OpenSSH public key.
   * @return {String} key fingerprint.
   * @throws {TypeError} on bad input.
   * @throws {Error} if what you passed doesn't look like an ssh public key.
   */
  fingerprint: function fingerprint(key) {
    assert.string(key, 'ssh_key');

    var pieces = key.split(' ');
    if (!pieces || !pieces.length || pieces.length < 2)
      throw new Error('invalid ssh key');

    var data = new Buffer(pieces[1], 'base64');

    var hash = crypto.createHash('md5');
    hash.update(data);
    var digest = hash.digest('hex');

    var fp = '';
    for (var i = 0; i < digest.length; i++) {
      if (i && i % 2 === 0)
        fp += ':';

      fp += digest[i];
    }

    return fp;
  },

  /**
  * Converts a PKGCS#8 PEM file to an OpenSSH public key (rsa)
  *
  * The reverse of the above function.
  */
  pemToRsaSSHKey: function pemToRsaSSHKey(pem, comment) {
    assert.equal('string', typeof pem, 'typeof pem');

    // chop off the BEGIN PUBLIC KEY and END PUBLIC KEY portion
    var cleaned = pem.split('\n').slice(1, -2).join('');

    var buf = new Buffer(cleaned, 'base64');

    var der = new asn1.BerReader(buf);

    der.readSequence();
    der.readSequence();

    var oid = der.readOID();
    assert.equal(oid, '1.2.840.113549.1.1.1', 'pem not in RSA format');

    // Null -- XXX this probably isn't good practice
    der.readByte();
    der.readByte();

    // bit string sequence
    der.readSequence(0x03);
    der.readByte();
    der.readSequence();

    // modulus
    assert.equal(der.peek(), asn1.Ber.Integer, 'modulus not an integer');
    der._offset = der.readLength(der.offset + 1);
    var modulus = der._buf.slice(der.offset, der.offset + der.length);
    der._offset += der.length;

    // exponent
    assert.equal(der.peek(), asn1.Ber.Integer, 'exponent not an integer');
    der._offset = der.readLength(der.offset + 1);
    var exponent = der._buf.slice(der.offset, der.offset + der.length);
    der._offset += der.length;

    // now, make the key
    var type = new Buffer('ssh-rsa');
    var buffer = new Buffer(4 + type.length + 4 + modulus.length + 4 + exponent.length);
    var i = 0;
    buffer.writeUInt32BE(type.length, i);     i += 4;
    type.copy(buffer, i);                     i += type.length;
    buffer.writeUInt32BE(exponent.length, i); i += 4;
    exponent.copy(buffer, i);                 i += exponent.length;
    buffer.writeUInt32BE(modulus.length, i);  i += 4;
    modulus.copy(buffer, i);                  i += modulus.length;

    var s = type.toString() + ' ' + buffer.toString('base64') + ' ' + (comment || '');
    return s;
  }
};

}).call(this,require("buffer").Buffer)
},{"asn1":115,"assert-plus":116,"buffer":177,"crypto":183,"ctype":119}],109:[function(require,module,exports){
// Copyright 2011 Joyent, Inc.  All rights reserved.

var assert = require('assert-plus');
var crypto = require('crypto');



///--- Exported API

module.exports = {

  /**
   * Simply wraps up the node crypto operations for you, and returns
   * true or false.  You are expected to pass in an object that was
   * returned from `parse()`.
   *
   * @param {Object} parsedSignature the object you got from `parse`.
   * @param {String} key either an RSA private key PEM or HMAC secret.
   * @return {Boolean} true if valid, false otherwise.
   * @throws {TypeError} if you pass in bad arguments.
   */
  verifySignature: function verifySignature(parsedSignature, key) {
    assert.object(parsedSignature, 'parsedSignature');
    assert.string(key, 'key');

    var alg = parsedSignature.algorithm.match(/(HMAC|RSA|DSA)-(\w+)/);
    if (!alg || alg.length !== 3)
      throw new TypeError('parsedSignature: unsupported algorithm ' +
                          parsedSignature.algorithm);

    if (alg[1] === 'HMAC') {
      var hmac = crypto.createHmac(alg[2].toUpperCase(), key);
      hmac.update(parsedSignature.signingString);
      return (hmac.digest('base64') === parsedSignature.params.signature);
    } else {
      var verify = crypto.createVerify(alg[0]);
      verify.update(parsedSignature.signingString);
      return verify.verify(key, parsedSignature.params.signature, 'base64');
    }
  }

};

},{"assert-plus":116,"crypto":183}],110:[function(require,module,exports){
// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.


module.exports = {

  newInvalidAsn1Error: function(msg) {
    var e = new Error();
    e.name = 'InvalidAsn1Error';
    e.message = msg || '';
    return e;
  }

};

},{}],111:[function(require,module,exports){
// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.

var errors = require('./errors');
var types = require('./types');

var Reader = require('./reader');
var Writer = require('./writer');


///--- Exports

module.exports = {

  Reader: Reader,

  Writer: Writer

};

for (var t in types) {
  if (types.hasOwnProperty(t))
    module.exports[t] = types[t];
}
for (var e in errors) {
  if (errors.hasOwnProperty(e))
    module.exports[e] = errors[e];
}

},{"./errors":110,"./reader":112,"./types":113,"./writer":114}],112:[function(require,module,exports){
(function (Buffer){
// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.

var assert = require('assert');

var ASN1 = require('./types');
var errors = require('./errors');


///--- Globals

var newInvalidAsn1Error = errors.newInvalidAsn1Error;



///--- API

function Reader(data) {
  if (!data || !Buffer.isBuffer(data))
    throw new TypeError('data must be a node Buffer');

  this._buf = data;
  this._size = data.length;

  // These hold the "current" state
  this._len = 0;
  this._offset = 0;

  var self = this;
  this.__defineGetter__('length', function() { return self._len; });
  this.__defineGetter__('offset', function() { return self._offset; });
  this.__defineGetter__('remain', function() {
    return self._size - self._offset;
  });
  this.__defineGetter__('buffer', function() {
    return self._buf.slice(self._offset);
  });
}


/**
 * Reads a single byte and advances offset; you can pass in `true` to make this
 * a "peek" operation (i.e., get the byte, but don't advance the offset).
 *
 * @param {Boolean} peek true means don't move offset.
 * @return {Number} the next byte, null if not enough data.
 */
Reader.prototype.readByte = function(peek) {
  if (this._size - this._offset < 1)
    return null;

  var b = this._buf[this._offset] & 0xff;

  if (!peek)
    this._offset += 1;

  return b;
};


Reader.prototype.peek = function() {
  return this.readByte(true);
};


/**
 * Reads a (potentially) variable length off the BER buffer.  This call is
 * not really meant to be called directly, as callers have to manipulate
 * the internal buffer afterwards.
 *
 * As a result of this call, you can call `Reader.length`, until the
 * next thing called that does a readLength.
 *
 * @return {Number} the amount of offset to advance the buffer.
 * @throws {InvalidAsn1Error} on bad ASN.1
 */
Reader.prototype.readLength = function(offset) {
  if (offset === undefined)
    offset = this._offset;

  if (offset >= this._size)
    return null;

  var lenB = this._buf[offset++] & 0xff;
  if (lenB === null)
    return null;

  if ((lenB & 0x80) == 0x80) {
    lenB &= 0x7f;

    if (lenB == 0)
      throw newInvalidAsn1Error('Indefinite length not supported');

    if (lenB > 4)
      throw newInvalidAsn1Error('encoding too long');

    if (this._size - offset < lenB)
      return null;

    this._len = 0;
    for (var i = 0; i < lenB; i++)
      this._len = (this._len << 8) + (this._buf[offset++] & 0xff);

  } else {
    // Wasn't a variable length
    this._len = lenB;
  }

  return offset;
};


/**
 * Parses the next sequence in this BER buffer.
 *
 * To get the length of the sequence, call `Reader.length`.
 *
 * @return {Number} the sequence's tag.
 */
Reader.prototype.readSequence = function(tag) {
  var seq = this.peek();
  if (seq === null)
    return null;
  if (tag !== undefined && tag !== seq)
    throw newInvalidAsn1Error('Expected 0x' + tag.toString(16) +
                              ': got 0x' + seq.toString(16));

  var o = this.readLength(this._offset + 1); // stored in `length`
  if (o === null)
    return null;

  this._offset = o;
  return seq;
};


Reader.prototype.readInt = function() {
  return this._readTag(ASN1.Integer);
};


Reader.prototype.readBoolean = function() {
  return (this._readTag(ASN1.Boolean) === 0 ? false : true);
};


Reader.prototype.readEnumeration = function() {
  return this._readTag(ASN1.Enumeration);
};


Reader.prototype.readString = function(tag, retbuf) {
  if (!tag)
    tag = ASN1.OctetString;

  var b = this.peek();
  if (b === null)
    return null;

  if (b !== tag)
    throw newInvalidAsn1Error('Expected 0x' + tag.toString(16) +
                              ': got 0x' + b.toString(16));

  var o = this.readLength(this._offset + 1); // stored in `length`

  if (o === null)
    return null;

  if (this.length > this._size - o)
    return null;

  this._offset = o;

  if (this.length === 0)
    return '';

  var str = this._buf.slice(this._offset, this._offset + this.length);
  this._offset += this.length;

  return retbuf ? str : str.toString('utf8');
};

Reader.prototype.readOID = function(tag) {
  if (!tag)
    tag = ASN1.OID;

  var b = this.peek();
  if (b === null)
    return null;

  if (b !== tag)
    throw newInvalidAsn1Error('Expected 0x' + tag.toString(16) +
                              ': got 0x' + b.toString(16));

  var o = this.readLength(this._offset + 1); // stored in `length`
  if (o === null)
    return null;

  if (this.length > this._size - o)
    return null;

  this._offset = o;

  var values = [];
  var value = 0;

  for (var i = 0; i < this.length; i++) {
    var byte = this._buf[this._offset++] & 0xff;

    value <<= 7;
    value += byte & 0x7f;
    if ((byte & 0x80) == 0) {
      values.push(value);
      value = 0;
    }
  }

  value = values.shift();
  values.unshift(value % 40);
  values.unshift((value / 40) >> 0);

  return values.join('.');
};


Reader.prototype._readTag = function(tag) {
  assert.ok(tag !== undefined);

  var b = this.peek();

  if (b === null)
    return null;

  if (b !== tag)
    throw newInvalidAsn1Error('Expected 0x' + tag.toString(16) +
                              ': got 0x' + b.toString(16));

  var o = this.readLength(this._offset + 1); // stored in `length`
  if (o === null)
    return null;

  if (this.length > 4)
    throw newInvalidAsn1Error('Integer too long: ' + this.length);

  if (this.length > this._size - o)
    return null;
  this._offset = o;

  var fb = this._buf[this._offset++];
  var value = 0;

  value = fb & 0x7F;
  for (var i = 1; i < this.length; i++) {
    value <<= 8;
    value |= (this._buf[this._offset++] & 0xff);
  }

  if ((fb & 0x80) == 0x80)
    value = -value;

  return value;
};



///--- Exported API

module.exports = Reader;

}).call(this,{"isBuffer":require("../../../../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../../../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":378,"./errors":110,"./types":113,"assert":162}],113:[function(require,module,exports){
// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.


module.exports = {
  EOC: 0,
  Boolean: 1,
  Integer: 2,
  BitString: 3,
  OctetString: 4,
  Null: 5,
  OID: 6,
  ObjectDescriptor: 7,
  External: 8,
  Real: 9, // float
  Enumeration: 10,
  PDV: 11,
  Utf8String: 12,
  RelativeOID: 13,
  Sequence: 16,
  Set: 17,
  NumericString: 18,
  PrintableString: 19,
  T61String: 20,
  VideotexString: 21,
  IA5String: 22,
  UTCTime: 23,
  GeneralizedTime: 24,
  GraphicString: 25,
  VisibleString: 26,
  GeneralString: 28,
  UniversalString: 29,
  CharacterString: 30,
  BMPString: 31,
  Constructor: 32,
  Context: 128
};

},{}],114:[function(require,module,exports){
(function (Buffer){
// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.

var assert = require('assert');
var ASN1 = require('./types');
var errors = require('./errors');


///--- Globals

var newInvalidAsn1Error = errors.newInvalidAsn1Error;

var DEFAULT_OPTS = {
  size: 1024,
  growthFactor: 8
};


///--- Helpers

function merge(from, to) {
  assert.ok(from);
  assert.equal(typeof(from), 'object');
  assert.ok(to);
  assert.equal(typeof(to), 'object');

  var keys = Object.getOwnPropertyNames(from);
  keys.forEach(function(key) {
    if (to[key])
      return;

    var value = Object.getOwnPropertyDescriptor(from, key);
    Object.defineProperty(to, key, value);
  });

  return to;
}



///--- API

function Writer(options) {
  options = merge(DEFAULT_OPTS, options || {});

  this._buf = new Buffer(options.size || 1024);
  this._size = this._buf.length;
  this._offset = 0;
  this._options = options;

  // A list of offsets in the buffer where we need to insert
  // sequence tag/len pairs.
  this._seq = [];

  var self = this;
  this.__defineGetter__('buffer', function() {
    if (self._seq.length)
      throw new InvalidAsn1Error(self._seq.length + ' unended sequence(s)');

    return self._buf.slice(0, self._offset);
  });
}


Writer.prototype.writeByte = function(b) {
  if (typeof(b) !== 'number')
    throw new TypeError('argument must be a Number');

  this._ensure(1);
  this._buf[this._offset++] = b;
};


Writer.prototype.writeInt = function(i, tag) {
  if (typeof(i) !== 'number')
    throw new TypeError('argument must be a Number');
  if (typeof(tag) !== 'number')
    tag = ASN1.Integer;

  var sz = 4;

  while ((((i & 0xff800000) === 0) || ((i & 0xff800000) === 0xff800000)) &&
         (sz > 1)) {
    sz--;
    i <<= 8;
  }

  if (sz > 4)
    throw new InvalidAsn1Error('BER ints cannot be > 0xffffffff');

  this._ensure(2 + sz);
  this._buf[this._offset++] = tag;
  this._buf[this._offset++] = sz;

  while (sz-- > 0) {
    this._buf[this._offset++] = ((i & 0xff000000) >> 24);
    i <<= 8;
  }

};


Writer.prototype.writeNull = function() {
  this.writeByte(ASN1.Null);
  this.writeByte(0x00);
};


Writer.prototype.writeEnumeration = function(i, tag) {
  if (typeof(i) !== 'number')
    throw new TypeError('argument must be a Number');
  if (typeof(tag) !== 'number')
    tag = ASN1.Enumeration;

  return this.writeInt(i, tag);
};


Writer.prototype.writeBoolean = function(b, tag) {
  if (typeof(b) !== 'boolean')
    throw new TypeError('argument must be a Boolean');
  if (typeof(tag) !== 'number')
    tag = ASN1.Boolean;

  this._ensure(3);
  this._buf[this._offset++] = tag;
  this._buf[this._offset++] = 0x01;
  this._buf[this._offset++] = b ? 0xff : 0x00;
};


Writer.prototype.writeString = function(s, tag) {
  if (typeof(s) !== 'string')
    throw new TypeError('argument must be a string (was: ' + typeof(s) + ')');
  if (typeof(tag) !== 'number')
    tag = ASN1.OctetString;

  var len = Buffer.byteLength(s);
  this.writeByte(tag);
  this.writeLength(len);
  if (len) {
    this._ensure(len);
    this._buf.write(s, this._offset);
    this._offset += len;
  }
};


Writer.prototype.writeBuffer = function(buf, tag) {
  if (typeof(tag) !== 'number')
    throw new TypeError('tag must be a number');
  if (!Buffer.isBuffer(buf))
    throw new TypeError('argument must be a buffer');

  this.writeByte(tag);
  this.writeLength(buf.length);
  this._ensure(buf.length);
  buf.copy(this._buf, this._offset, 0, buf.length);
  this._offset += buf.length;
};


Writer.prototype.writeStringArray = function(strings) {
  if ((!strings instanceof Array))
    throw new TypeError('argument must be an Array[String]');

  var self = this;
  strings.forEach(function(s) {
    self.writeString(s);
  });
};

// This is really to solve DER cases, but whatever for now
Writer.prototype.writeOID = function(s, tag) {
  if (typeof(s) !== 'string')
    throw new TypeError('argument must be a string');
  if (typeof(tag) !== 'number')
    tag = ASN1.OID;

  if (!/^([0-9]+\.){3,}[0-9]+$/.test(s))
    throw new Error('argument is not a valid OID string');

  function encodeOctet(bytes, octet) {
    if (octet < 128) {
        bytes.push(octet);
    } else if (octet < 16384) {
        bytes.push((octet >>> 7) | 0x80);
        bytes.push(octet & 0x7F);
    } else if (octet < 2097152) {
      bytes.push((octet >>> 14) | 0x80);
      bytes.push(((octet >>> 7) | 0x80) & 0xFF);
      bytes.push(octet & 0x7F);
    } else if (octet < 268435456) {
      bytes.push((octet >>> 21) | 0x80);
      bytes.push(((octet >>> 14) | 0x80) & 0xFF);
      bytes.push(((octet >>> 7) | 0x80) & 0xFF);
      bytes.push(octet & 0x7F);
    } else {
      bytes.push(((octet >>> 28) | 0x80) & 0xFF);
      bytes.push(((octet >>> 21) | 0x80) & 0xFF);
      bytes.push(((octet >>> 14) | 0x80) & 0xFF);
      bytes.push(((octet >>> 7) | 0x80) & 0xFF);
      bytes.push(octet & 0x7F);
    }
  }

  var tmp = s.split('.');
  var bytes = [];
  bytes.push(parseInt(tmp[0], 10) * 40 + parseInt(tmp[1], 10));
  tmp.slice(2).forEach(function(b) {
    encodeOctet(bytes, parseInt(b, 10));
  });

  var self = this;
  this._ensure(2 + bytes.length);
  this.writeByte(tag);
  this.writeLength(bytes.length);
  bytes.forEach(function(b) {
    self.writeByte(b);
  });
};


Writer.prototype.writeLength = function(len) {
  if (typeof(len) !== 'number')
    throw new TypeError('argument must be a Number');

  this._ensure(4);

  if (len <= 0x7f) {
    this._buf[this._offset++] = len;
  } else if (len <= 0xff) {
    this._buf[this._offset++] = 0x81;
    this._buf[this._offset++] = len;
  } else if (len <= 0xffff) {
    this._buf[this._offset++] = 0x82;
    this._buf[this._offset++] = len >> 8;
    this._buf[this._offset++] = len;
  } else if (len <= 0xffffff) {
    this._shift(start, len, 1);
    this._buf[this._offset++] = 0x83;
    this._buf[this._offset++] = len >> 16;
    this._buf[this._offset++] = len >> 8;
    this._buf[this._offset++] = len;
  } else {
    throw new InvalidAsn1ERror('Length too long (> 4 bytes)');
  }
};

Writer.prototype.startSequence = function(tag) {
  if (typeof(tag) !== 'number')
    tag = ASN1.Sequence | ASN1.Constructor;

  this.writeByte(tag);
  this._seq.push(this._offset);
  this._ensure(3);
  this._offset += 3;
};


Writer.prototype.endSequence = function() {
  var seq = this._seq.pop();
  var start = seq + 3;
  var len = this._offset - start;

  if (len <= 0x7f) {
    this._shift(start, len, -2);
    this._buf[seq] = len;
  } else if (len <= 0xff) {
    this._shift(start, len, -1);
    this._buf[seq] = 0x81;
    this._buf[seq + 1] = len;
  } else if (len <= 0xffff) {
    this._buf[seq] = 0x82;
    this._buf[seq + 1] = len >> 8;
    this._buf[seq + 2] = len;
  } else if (len <= 0xffffff) {
    this._shift(start, len, 1);
    this._buf[seq] = 0x83;
    this._buf[seq + 1] = len >> 16;
    this._buf[seq + 2] = len >> 8;
    this._buf[seq + 3] = len;
  } else {
    throw new InvalidAsn1Error('Sequence too long');
  }
};


Writer.prototype._shift = function(start, len, shift) {
  assert.ok(start !== undefined);
  assert.ok(len !== undefined);
  assert.ok(shift);

  this._buf.copy(this._buf, start + shift, start, start + len);
  this._offset += shift;
};

Writer.prototype._ensure = function(len) {
  assert.ok(len);

  if (this._size - this._offset < len) {
    var sz = this._size * this._options.growthFactor;
    if (sz - this._offset < len)
      sz += len;

    var buf = new Buffer(sz);

    this._buf.copy(buf, 0, 0, this._offset);
    this._buf = buf;
    this._size = sz;
  }
};



///--- Exported API

module.exports = Writer;

}).call(this,require("buffer").Buffer)
},{"./errors":110,"./types":113,"assert":162,"buffer":177}],115:[function(require,module,exports){
// Copyright 2011 Mark Cavage <mcavage@gmail.com> All rights reserved.

// If you have no idea what ASN.1 or BER is, see this:
// ftp://ftp.rsa.com/pub/pkcs/ascii/layman.asc

var Ber = require('./ber/index');



///--- Exported API

module.exports = {

  Ber: Ber,

  BerReader: Ber.Reader,

  BerWriter: Ber.Writer

};

},{"./ber/index":111}],116:[function(require,module,exports){
(function (Buffer,process){
// Copyright (c) 2012, Mark Cavage. All rights reserved.

var assert = require('assert');
var Stream = require('stream').Stream;
var util = require('util');



///--- Globals

var NDEBUG = process.env.NODE_NDEBUG || false;
var UUID_REGEXP = /^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$/;



///--- Messages

var ARRAY_TYPE_REQUIRED = '%s ([%s]) required';
var TYPE_REQUIRED = '%s (%s) is required';



///--- Internal

function capitalize(str) {
        return (str.charAt(0).toUpperCase() + str.slice(1));
}

function uncapitalize(str) {
        return (str.charAt(0).toLowerCase() + str.slice(1));
}

function _() {
        return (util.format.apply(util, arguments));
}


function _assert(arg, type, name, stackFunc) {
        if (!NDEBUG) {
                name = name || type;
                stackFunc = stackFunc || _assert.caller;
                var t = typeof (arg);

                if (t !== type) {
                        throw new assert.AssertionError({
                                message: _(TYPE_REQUIRED, name, type),
                                actual: t,
                                expected: type,
                                operator: '===',
                                stackStartFunction: stackFunc
                        });
                }
        }
}


function _instanceof(arg, type, name, stackFunc) {
        if (!NDEBUG) {
                name = name || type;
                stackFunc = stackFunc || _instanceof.caller;

                if (!(arg instanceof type)) {
                        throw new assert.AssertionError({
                                message: _(TYPE_REQUIRED, name, type.name),
                                actual: _getClass(arg),
                                expected: type.name,
                                operator: 'instanceof',
                                stackStartFunction: stackFunc
                        });
                }
        }
}

function _getClass(object) {
        return (Object.prototype.toString.call(object).slice(8, -1));
};



///--- API

function array(arr, type, name) {
        if (!NDEBUG) {
                name = name || type;

                if (!Array.isArray(arr)) {
                        throw new assert.AssertionError({
                                message: _(ARRAY_TYPE_REQUIRED, name, type),
                                actual: typeof (arr),
                                expected: 'array',
                                operator: 'Array.isArray',
                                stackStartFunction: array.caller
                        });
                }

                for (var i = 0; i < arr.length; i++) {
                        _assert(arr[i], type, name, array);
                }
        }
}


function bool(arg, name) {
        _assert(arg, 'boolean', name, bool);
}


function buffer(arg, name) {
        if (!Buffer.isBuffer(arg)) {
                throw new assert.AssertionError({
                        message: _(TYPE_REQUIRED, name || '', 'Buffer'),
                        actual: typeof (arg),
                        expected: 'buffer',
                        operator: 'Buffer.isBuffer',
                        stackStartFunction: buffer
                });
        }
}


function func(arg, name) {
        _assert(arg, 'function', name);
}


function number(arg, name) {
        _assert(arg, 'number', name);
        if (!NDEBUG && (isNaN(arg) || !isFinite(arg))) {
                throw new assert.AssertionError({
                        message: _(TYPE_REQUIRED, name, 'number'),
                        actual: arg,
                        expected: 'number',
                        operator: 'isNaN',
                        stackStartFunction: number
                });
        }
}


function object(arg, name) {
        _assert(arg, 'object', name);
}


function stream(arg, name) {
        _instanceof(arg, Stream, name);
}


function date(arg, name) {
        _instanceof(arg, Date, name);
}

function regexp(arg, name) {
        _instanceof(arg, RegExp, name);
}


function string(arg, name) {
        _assert(arg, 'string', name);
}


function uuid(arg, name) {
        string(arg, name);
        if (!NDEBUG && !UUID_REGEXP.test(arg)) {
                throw new assert.AssertionError({
                        message: _(TYPE_REQUIRED, name, 'uuid'),
                        actual: 'string',
                        expected: 'uuid',
                        operator: 'test',
                        stackStartFunction: uuid
                });
        }
}


///--- Exports

module.exports = {
        bool: bool,
        buffer: buffer,
        date: date,
        func: func,
        number: number,
        object: object,
        regexp: regexp,
        stream: stream,
        string: string,
        uuid: uuid
};


Object.keys(module.exports).forEach(function (k) {
        if (k === 'buffer')
                return;

        var name = 'arrayOf' + capitalize(k);

        if (k === 'bool')
                k = 'boolean';
        if (k === 'func')
                k = 'function';
        module.exports[name] = function (arg, name) {
                array(arg, k, name);
        };
});

Object.keys(module.exports).forEach(function (k) {
        var _name = 'optional' + capitalize(k);
        var s = uncapitalize(k.replace('arrayOf', ''));
        if (s === 'bool')
                s = 'boolean';
        if (s === 'func')
                s = 'function';

        if (k.indexOf('arrayOf') !== -1) {
          module.exports[_name] = function (arg, name) {
                  if (!NDEBUG && arg !== undefined) {
                          array(arg, s, name);
                  }
          };
        } else {
          module.exports[_name] = function (arg, name) {
                  if (!NDEBUG && arg !== undefined) {
                          _assert(arg, s, name);
                  }
          };
        }
});


// Reexport built-in assertions
Object.keys(assert).forEach(function (k) {
        if (k === 'AssertionError') {
                module.exports[k] = assert[k];
                return;
        }

        module.exports[k] = function () {
                if (!NDEBUG) {
                        assert[k].apply(assert[k], arguments);
                }
        };
});

}).call(this,{"isBuffer":require("../../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js")},require('_process'))
},{"../../../../../../../twister-react/node_modules/browserify/node_modules/insert-module-globals/node_modules/is-buffer/index.js":378,"_process":381,"assert":162,"stream":399,"util":410}],117:[function(require,module,exports){
/*
 * ctf.js
 *
 * Understand and parse all of the different JSON formats of CTF data and
 * translate that into a series of node-ctype friendly pieces. The reason for
 * the abstraction is to handle different changes in the file format.
 *
 * We have to be careful here that we don't end up using a name that is already
 * a built in type.
 */
var mod_assert = require('assert');
var ASSERT = mod_assert.ok;

var ctf_versions = [ '1.0' ];
var ctf_entries = [ 'integer', 'float', 'typedef', 'struct' ];
var ctf_deftypes = [ 'int8_t', 'uint8_t', 'int16_t', 'uint16_t', 'int32_t',
    'uint32_t', 'float', 'double' ];

function ctfParseInteger(entry, ctype)
{
	var name, sign, len, type;

	name = entry['name'];
	if (!('signed' in entry['integer']))
		throw (new Error('Malformed CTF JSON: integer missing ' +
		    'signed value'));


	if (!('length' in entry['integer']))
		throw (new Error('Malformed CTF JSON: integer missing ' +
		    'length value'));

	sign = entry['integer']['signed'];
	len = entry['integer']['length'];
	type = null;

	if (sign && len == 1)
		type = 'int8_t';
	else if (len == 1)
		type = 'uint8_t';
	else if (sign && len == 2)
		type = 'int16_t';
	else if (len == 2)
		type = 'uint16_t';
	else if (sign && len == 4)
		type = 'int32_t';
	else if (len == 4)
		type = 'uint32_t';
	else if (sign && len == 8)
		type = 'int64_t';
	else if (len == 8)
		type = 'uint64_t';

	if (type === null)
		throw (new Error('Malformed CTF JSON: integer has ' +
		    'unsupported length and sign - ' + len + '/' + sign));

	/*
	 * This means that this is the same as one of our built in types. If
	 * that's the case defining it would be an error. So instead of trying
	 * to typedef it, we'll return here.
	 */
	if (name == type)
		return;

	if (name == 'char') {
		ASSERT(type == 'int8_t');
		return;
	}

	ctype.typedef(name, type);
}

function ctfParseFloat(entry, ctype)
{
	var name, len;

	name = entry['name'];
	if (!('length' in entry['float']))
		throw (new Error('Malformed CTF JSON: float missing ' +
		    'length value'));

	len = entry['float']['length'];
	if (len != 4 && len != 8)
		throw (new Error('Malformed CTF JSON: float has invalid ' +
		    'length value'));

	if (len == 4) {
		if (name == 'float')
			return;
		ctype.typedef(name, 'float');
	} else if (len == 8) {
		if (name == 'double')
			return;
		ctype.typedef(name, 'double');
	}
}

function ctfParseTypedef(entry, ctype)
{
	var name, type, ii;

	name = entry['name'];
	if (typeof (entry['typedef']) != 'string')
		throw (new Error('Malformed CTF JSON: typedef value in not ' +
		    'a string'));

	type = entry['typedef'];

	/*
	 * We need to ensure that we're not looking at type that's one of our
	 * built in types. Traditionally in C a uint32_t would be a typedef to
	 * some kind of integer. However, those size types are built ins.
	 */
	for (ii = 0; ii < ctf_deftypes.length; ii++) {
		if (name == ctf_deftypes[ii])
			return;
	}

	ctype.typedef(name, type);
}

function ctfParseStruct(entry, ctype)
{
	var name, type, ii, val, index, member, push;

	member = [];
	if (!Array.isArray(entry['struct']))
		throw (new Error('Malformed CTF JSON: struct value is not ' +
		    'an array'));

	for (ii = 0; ii < entry['struct'].length; ii++) {
		val = entry['struct'][ii];
		if (!('name' in val))
			throw (new Error('Malformed CTF JSON: struct member ' +
			    'missing name'));

		if (!('type' in val))
			throw (new Error('Malformed CTF JSON: struct member ' +
			    'missing type'));

		if (typeof (val['name']) != 'string')
			throw (new Error('Malformed CTF JSON: struct member ' +
			    'name isn\'t a string'));

		if (typeof (val['type']) != 'string')
			throw (new Error('Malformed CTF JSON: struct member ' +
			    'type isn\'t a string'));

		/*
		 * CTF version 2 specifies array names as <type> [<num>] where
		 * as node-ctype does this as <type>[<num>].
		 */
		name = val['name'];
		type = val['type'];
		index = type.indexOf(' [');
		if (index != -1) {
			type = type.substring(0, index) +
			    type.substring(index + 1, type.length);
		}
		push = {};
		push[name] = { 'type': type };
		member.push(push);
	}

	name = entry['name'];
	ctype.typedef(name, member);
}

function ctfParseEntry(entry, ctype)
{
	var ii, found;

	if (!('name' in entry))
		throw (new Error('Malformed CTF JSON: entry missing "name" ' +
		    'section'));

	for (ii = 0; ii < ctf_entries.length; ii++) {
		if (ctf_entries[ii] in entry)
			found++;
	}

	if (found === 0)
		throw (new Error('Malformed CTF JSON: found no entries'));

	if (found >= 2)
		throw (new Error('Malformed CTF JSON: found more than one ' +
		    'entry'));

	if ('integer' in entry) {
		ctfParseInteger(entry, ctype);
		return;
	}

	if ('float' in entry) {
		ctfParseFloat(entry, ctype);
		return;
	}

	if ('typedef' in entry) {
		ctfParseTypedef(entry, ctype);
		return;
	}

	if ('struct' in entry) {
		ctfParseStruct(entry, ctype);
		return;
	}

	ASSERT(false, 'shouldn\'t reach here');
}

function ctfParseJson(json, ctype)
{
	var version, ii;

	ASSERT(json);
	ASSERT(ctype);
	if (!('metadata' in json))
		throw (new Error('Invalid CTF JSON: missing metadata section'));

	if (!('ctf2json_version' in json['metadata']))
		throw (new Error('Invalid CTF JSON: missing ctf2json_version'));

	version = json['metadata']['ctf2json_version'];
	for (ii = 0; ii < ctf_versions.length; ii++) {
		if (ctf_versions[ii] == version)
			break;
	}

	if (ii == ctf_versions.length)
		throw (new Error('Unsuported ctf2json_version: ' + version));

	if (!('data' in json))
		throw (new Error('Invalid CTF JSON: missing data section'));

	if (!Array.isArray(json['data']))
		throw (new Error('Malformed CTF JSON: data section is not ' +
		    'an array'));

	for (ii = 0; ii < json['data'].length; ii++)
		ctfParseEntry(json['data'][ii], ctype);
}

exports.ctfParseJson = ctfParseJson;

},{"assert":162}],118:[function(require,module,exports){
/*
 * rm - Feb 2011
 * ctio.js:
 *
 * A simple way to read and write simple ctypes. Of course, as you'll find the
 * code isn't as simple as it might appear. The following types are currently
 * supported in big and little endian formats:
 *
 * 	uint8_t			int8_t
 * 	uint16_t		int16_t
 * 	uint32_t		int32_t
 *	float (single precision IEEE 754)
 *	double (double precision IEEE 754)
 *
 * This is designed to work in Node and v8. It may in fact work in other
 * Javascript interpreters (that'd be pretty neat), but it hasn't been tested.
 * If you find that it does in fact work, that's pretty cool. Try and pass word
 * back to the original author.
 *
 * Note to the reader: If you're tabstop isn't set to 8, parts of this may look
 * weird.
 */

/*
 * Numbers in Javascript have a secret: all numbers must be represented with an
 * IEEE-754 double. The double has a mantissa with a length of 52 bits with an
 * implicit one. Thus the range of integers that can be represented is limited
 * to the size of the mantissa, this makes reading and writing 64-bit integers
 * difficult, but far from impossible.
 *
 * Another side effect of this representation is what happens when you use the
 * bitwise operators, i.e. shift left, shift right, and, or, etc. In Javascript,
 * each operand and the result is cast to a signed 32-bit number. However, in
 * the case of >>> the values are cast to an unsigned number.
 */

/*
 * A reminder on endian related issues:
 *
 * Big Endian: MSB -> First byte
 * Little Endian: MSB->Last byte
 */
var mod_assert = require('assert');

/*
 * An 8 bit unsigned integer involves doing no significant work.
 */
function ruint8(buffer, endian, offset)
{
	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	return (buffer[offset]);
}

/*
 * For 16 bit unsigned numbers we can do all the casting that we want to do.
 */
function rgint16(buffer, endian, offset)
{
	var val = 0;

	if (endian == 'big') {
		val = buffer[offset] << 8;
		val |=  buffer[offset+1];
	} else {
		val = buffer[offset];
		val |= buffer[offset+1] << 8;
	}

	return (val);

}

function ruint16(buffer, endian, offset)
{
	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 1 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	return (rgint16(buffer, endian, offset));
}

/*
 * Because most bitshifting is done using signed numbers, if we would go into
 * the realm where we use that 32nd bit, we'll end up going into the negative
 * range. i.e.:
 * > 200 << 24
 * -939524096
 *
 * Not the value you'd expect. To work around this, we end up having to do some
 * abuse of the JavaScript standard. in this case, we know that a >>> shift is
 * defined to cast our value to an *unsigned* 32-bit number. Because of that, we
 * use that instead to save us some additional math, though it does feel a
 * little weird and it isn't obvious as to why you woul dwant to do this at
 * first.
 */
function rgint32(buffer, endian, offset)
{
	var val = 0;

	if (endian == 'big') {
		val = buffer[offset+1] << 16;
		val |= buffer[offset+2] << 8;
		val |= buffer[offset+3];
		val = val + (buffer[offset] << 24 >>> 0);
	} else {
		val = buffer[offset+2] << 16;
		val |= buffer[offset+1] << 8;
		val |= buffer[offset];
		val = val + (buffer[offset + 3] << 24 >>> 0);
	}

	return (val);
}

function ruint32(buffer, endian, offset)
{
	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	return (rgint32(buffer, endian, offset));
}

/*
 * Reads a 64-bit unsigned number. The astue observer will note that this
 * doesn't quite work. Javascript has chosen to only have numbers that can be
 * represented by a double. A double only has 52 bits of mantissa with an
 * implicit 1, thus we have up to 53 bits to represent an integer. However, 2^53
 * doesn't quite give us what we want. Isn't 53 bits enough for anyone? What
 * could you have possibly wanted to represent that was larger than that? Oh,
 * maybe a size? You mean we bypassed the 4 GB limit on file sizes, when did
 * that happen?
 *
 * To get around this egregious language issue, we're going to instead construct
 * an array of two 32 bit unsigned integers. Where arr[0] << 32 + arr[1] would
 * give the actual number. However, note that the above code probably won't
 * produce the desired results because of the way Javascript numbers are
 * doubles.
 */
function rgint64(buffer, endian, offset)
{
	var val = new Array(2);

	if (endian == 'big') {
		val[0] = ruint32(buffer, endian, offset);
		val[1] = ruint32(buffer, endian, offset+4);
	} else {
		val[0] = ruint32(buffer, endian, offset+4);
		val[1] = ruint32(buffer, endian, offset);
	}

	return (val);
}

function ruint64(buffer, endian, offset)
{
	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 7 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	return (rgint64(buffer, endian, offset));
}


/*
 * Signed integer types, yay team! A reminder on how two's complement actually
 * works. The first bit is the signed bit, i.e. tells us whether or not the
 * number should be positive or negative. If the two's complement value is
 * positive, then we're done, as it's equivalent to the unsigned representation.
 *
 * Now if the number is positive, you're pretty much done, you can just leverage
 * the unsigned translations and return those. Unfortunately, negative numbers
 * aren't quite that straightforward.
 *
 * At first glance, one might be inclined to use the traditional formula to
 * translate binary numbers between the positive and negative values in two's
 * complement. (Though it doesn't quite work for the most negative value)
 * Mainly:
 *  - invert all the bits
 *  - add one to the result
 *
 * Of course, this doesn't quite work in Javascript. Take for example the value
 * of -128. This could be represented in 16 bits (big-endian) as 0xff80. But of
 * course, Javascript will do the following:
 *
 * > ~0xff80
 * -65409
 *
 * Whoh there, Javascript, that's not quite right. But wait, according to
 * Javascript that's perfectly correct. When Javascript ends up seeing the
 * constant 0xff80, it has no notion that it is actually a signed number. It
 * assumes that we've input the unsigned value 0xff80. Thus, when it does the
 * binary negation, it casts it into a signed value, (positive 0xff80). Then
 * when you perform binary negation on that, it turns it into a negative number.
 *
 * Instead, we're going to have to use the following general formula, that works
 * in a rather Javascript friendly way. I'm glad we don't support this kind of
 * weird numbering scheme in the kernel.
 *
 * (BIT-MAX - (unsigned)val + 1) * -1
 *
 * The astute observer, may think that this doesn't make sense for 8-bit numbers
 * (really it isn't necessary for them). However, when you get 16-bit numbers,
 * you do. Let's go back to our prior example and see how this will look:
 *
 * (0xffff - 0xff80 + 1) * -1
 * (0x007f + 1) * -1
 * (0x0080) * -1
 *
 * Doing it this way ends up allowing us to treat it appropriately in
 * Javascript. Sigh, that's really quite ugly for what should just be a few bit
 * shifts, ~ and &.
 */

/*
 * Endianness doesn't matter for 8-bit signed values. We could in fact optimize
 * this case because the more traditional methods work, but for consistency,
 * we'll keep doing this the same way.
 */
function rsint8(buffer, endian, offset)
{
	var neg;

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	neg = buffer[offset] & 0x80;
	if (!neg)
		return (buffer[offset]);

	return ((0xff - buffer[offset] + 1) * -1);
}

/*
 * The 16-bit version requires a bit more effort. In this case, we can leverage
 * our unsigned code to generate the value we want to return.
 */
function rsint16(buffer, endian, offset)
{
	var neg, val;

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 1 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = rgint16(buffer, endian, offset);
	neg = val & 0x8000;
	if (!neg)
		return (val);

	return ((0xffff - val + 1) * -1);
}

/*
 * We really shouldn't leverage our 32-bit code here and instead utilize the
 * fact that we know that since these are signed numbers, we can do all the
 * shifting and binary anding to generate the 32-bit number. But, for
 * consistency we'll do the same. If we want to do otherwise, we should instead
 * make the 32 bit unsigned code do the optimization. But as long as there
 * aren't floats secretly under the hood for that, we /should/ be okay.
 */
function rsint32(buffer, endian, offset)
{
	var neg, val;

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = rgint32(buffer, endian, offset);
	neg = val & 0x80000000;
	if (!neg)
		return (val);

	return ((0xffffffff - val + 1) * -1);
}

/*
 * The signed version of this code suffers from all of the same problems of the
 * other 64 bit version.
 */
function rsint64(buffer, endian, offset)
{
	var neg, val;

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = rgint64(buffer, endian, offset);
	neg = val[0] & 0x80000000;

	if (!neg)
		return (val);

	val[0] = (0xffffffff - val[0]) * -1;
	val[1] = (0xffffffff - val[1] + 1) * -1;

	/*
	 * If we had the key 0x8000000000000000, that would leave the lower 32
	 * bits as 0xffffffff, however, since we're goint to add one, that would
	 * actually leave the lower 32-bits as 0x100000000, which would break
	 * our ability to write back a value that we received. To work around
	 * this, if we actually get that value, we're going to bump the upper
	 * portion by 1 and set this to zero.
	 */
	mod_assert.ok(val[1] <= 0x100000000);
	if (val[1] == -0x100000000) {
		val[1] = 0;
		val[0]--;
	}

	return (val);
}

/*
 * We now move onto IEEE 754: The traditional form for floating point numbers
 * and what is secretly hiding at the heart of everything in this. I really hope
 * that someone is actually using this, as otherwise, this effort is probably
 * going to be more wasted.
 *
 * One might be tempted to use parseFloat here, but that wouldn't work at all
 * for several reasons. Mostly due to the way floats actually work, and
 * parseFloat only actually works in base 10. I don't see base 10 anywhere near
 * this file.
 *
 * In this case we'll implement the single and double precision versions. The
 * quadruple precision, while probably useful, wouldn't really be accepted by
 * Javascript, so let's not even waste our time.
 *
 * So let's review how this format looks like. A single precision value is 32
 * bits and has three parts:
 *   -  Sign bit
 *   -  Exponent (Using bias notation)
 *   -  Mantissa
 *
 * |s|eeeeeeee|mmmmmmmmmmmmmmmmmmmmmmmmm|
 * 31| 30-23  |  22    	-       0       |
 *
 * The exponent is stored in a biased input. The bias in this case 127.
 * Therefore, our exponent is equal to the 8-bit value - 127.
 *
 * By default, a number is normalized in IEEE, that means that the mantissa has
 * an implicit one that we don't see. So really the value stored is 1.m.
 * However, if the exponent is all zeros, then instead we have to shift
 * everything to the right one and there is no more implicit one.
 *
 * Special values:
 *  - Positive Infinity:
 *	Sign:		0
 *	Exponent: 	All 1s
 *	Mantissa:	0
 *  - Negative Infinity:
 *	Sign:		1
 *	Exponent: 	All 1s
 *	Mantissa:	0
 *  - NaN:
 *	Sign:		*
 *	Exponent: 	All 1s
 *	Mantissa:	non-zero
 *  - Zero:
 *	Sign:		*
 *	Exponent:	All 0s
 *	Mantissa:	0
 *
 * In the case of zero, the sign bit determines whether we get a positive or
 * negative zero. However, since Javascript cannot determine the difference
 * between the two: i.e. -0 == 0, we just always return 0.
 *
 */
function rfloat(buffer, endian, offset)
{
	var bytes = [];
	var sign, exponent, mantissa, val;
	var bias = 127;
	var maxexp = 0xff;

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	/* Normalize the bytes to be in endian order */
	if (endian == 'big') {
		bytes[0] = buffer[offset];
		bytes[1] = buffer[offset+1];
		bytes[2] = buffer[offset+2];
		bytes[3] = buffer[offset+3];
	} else {
		bytes[3] = buffer[offset];
		bytes[2] = buffer[offset+1];
		bytes[1] = buffer[offset+2];
		bytes[0] = buffer[offset+3];
	}

	sign = bytes[0] & 0x80;
	exponent = (bytes[0] & 0x7f) << 1;
	exponent |= (bytes[1] & 0x80) >>> 7;
	mantissa = (bytes[1] & 0x7f) << 16;
	mantissa |= bytes[2] << 8;
	mantissa |= bytes[3];

	/* Check for special cases before we do general parsing */
	if (!sign && exponent == maxexp && mantissa === 0)
		return (Number.POSITIVE_INFINITY);

	if (sign && exponent == maxexp && mantissa === 0)
		return (Number.NEGATIVE_INFINITY);

	if (exponent == maxexp && mantissa !== 0)
		return (Number.NaN);

	/*
	 * Javascript really doesn't have support for positive or negative zero.
	 * So we're not going to try and give it to you. That would be just
	 * plain weird. Besides -0 == 0.
	 */
	if (exponent === 0 && mantissa === 0)
		return (0);

	/*
	 * Now we can deal with the bias and the determine whether the mantissa
	 * has the implicit one or not.
	 */
	exponent -= bias;
	if (exponent == -bias) {
		exponent++;
		val = 0;
	} else {
		val = 1;
	}

	val = (val + mantissa * Math.pow(2, -23)) * Math.pow(2, exponent);

	if (sign)
		val *= -1;

	return (val);
}

/*
 * Doubles in IEEE 754 are like their brothers except for a few changes and
 * increases in size:
 *   - The exponent is now 11 bits
 *   - The mantissa is now 52 bits
 *   - The bias is now 1023
 *
 * |s|eeeeeeeeeee|mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm|
 * 63| 62 - 52   | 	51		-			0     |
 * 63| 62 - 52   |      51              -                       0     |
 *
 * While the size has increased a fair amount, we're going to end up keeping the
 * same general formula for calculating the final value. As a reminder, this
 * formula is:
 *
 * (-1)^s * (n + m) * 2^(e-b)
 *
 * Where:
 *	s	is the sign bit
 *	n	is (exponent > 0) ? 1 : 0 -- Determines whether we're normalized
 *					     or not
 *	m	is the mantissa
 *	e	is the exponent specified
 *	b	is the bias for the exponent
 *
 */
function rdouble(buffer, endian, offset)
{
	var bytes = [];
	var sign, exponent, mantissa, val, lowmant;
	var bias = 1023;
	var maxexp = 0x7ff;

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 7 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	/* Normalize the bytes to be in endian order */
	if (endian == 'big') {
		bytes[0] = buffer[offset];
		bytes[1] = buffer[offset+1];
		bytes[2] = buffer[offset+2];
		bytes[3] = buffer[offset+3];
		bytes[4] = buffer[offset+4];
		bytes[5] = buffer[offset+5];
		bytes[6] = buffer[offset+6];
		bytes[7] = buffer[offset+7];
	} else {
		bytes[7] = buffer[offset];
		bytes[6] = buffer[offset+1];
		bytes[5] = buffer[offset+2];
		bytes[4] = buffer[offset+3];
		bytes[3] = buffer[offset+4];
		bytes[2] = buffer[offset+5];
		bytes[1] = buffer[offset+6];
		bytes[0] = buffer[offset+7];
	}

	/*
	 * We can construct the exponent and mantissa the same way as we did in
	 * the case of a float, just increase the range of the exponent.
	 */
	sign = bytes[0] & 0x80;
	exponent = (bytes[0] & 0x7f) << 4;
	exponent |= (bytes[1] & 0xf0) >>> 4;

	/*
	 * This is going to be ugly but then again, we're dealing with IEEE 754.
	 * This could probably be done as a node add on in a few lines of C++,
	 * but oh we'll, we've made it this far so let's be native the rest of
	 * the way...
	 *
	 * What we're going to do is break the mantissa into two parts, the
	 * lower 24 bits and the upper 28 bits. We'll multiply the upper 28 bits
	 * by the appropriate power and then add in the lower 24-bits. Not
	 * really that great. It's pretty much a giant kludge to deal with
	 * Javascript eccentricities around numbers.
	 */
	lowmant = bytes[7];
	lowmant |= bytes[6] << 8;
	lowmant |= bytes[5] << 16;
	mantissa = bytes[4];
	mantissa |= bytes[3] << 8;
	mantissa |= bytes[2] << 16;
	mantissa |= (bytes[1] & 0x0f) << 24;
	mantissa *= Math.pow(2, 24); /* Equivalent to << 24, but JS compat */
	mantissa += lowmant;

	/* Check for special cases before we do general parsing */
	if (!sign && exponent == maxexp && mantissa === 0)
		return (Number.POSITIVE_INFINITY);

	if (sign && exponent == maxexp && mantissa === 0)
		return (Number.NEGATIVE_INFINITY);

	if (exponent == maxexp && mantissa !== 0)
		return (Number.NaN);

	/*
	 * Javascript really doesn't have support for positive or negative zero.
	 * So we're not going to try and give it to you. That would be just
	 * plain weird. Besides -0 == 0.
	 */
	if (exponent === 0 && mantissa === 0)
		return (0);

	/*
	 * Now we can deal with the bias and the determine whether the mantissa
	 * has the implicit one or not.
	 */
	exponent -= bias;
	if (exponent == -bias) {
		exponent++;
		val = 0;
	} else {
		val = 1;
	}

	val = (val + mantissa * Math.pow(2, -52)) * Math.pow(2, exponent);

	if (sign)
		val *= -1;

	return (val);
}

/*
 * Now that we have gone through the pain of reading the individual types, we're
 * probably going to want some way to write these back. None of this is going to
 * be good. But since we have Javascript numbers this should certainly be more
 * interesting. Though we can constrain this end a little bit more in what is
 * valid. For now, let's go back to our friends the unsigned value.
 */

/*
 * Unsigned numbers seem deceptively easy. Here are the general steps and rules
 * that we are going to take:
 *   -  If the number is negative, throw an Error
 *   -  Truncate any floating point portion
 *   -  Take the modulus of the number in our base
 *   -  Write it out to the buffer in the endian format requested at the offset
 */

/*
 * We have to make sure that the value is a valid integer. This means that it is
 * non-negative. It has no fractional component and that it does not exceed the
 * maximum allowed value.
 *
 *	value		The number to check for validity
 *
 *	max		The maximum value
 */
function prepuint(value, max)
{
	if (typeof (value) != 'number')
		throw (new (Error('cannot write a non-number as a number')));

	if (value < 0)
		throw (new Error('specified a negative value for writing an ' +
		    'unsigned value'));

	if (value > max)
		throw (new Error('value is larger than maximum value for ' +
		    'type'));

	if (Math.floor(value) !== value)
		throw (new Error('value has a fractional component'));

	return (value);
}

/*
 * 8-bit version, classy. We can ignore endianness which is good.
 */
function wuint8(value, endian, buffer, offset)
{
	var val;

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = prepuint(value, 0xff);
	buffer[offset] = val;
}

/*
 * Pretty much the same as the 8-bit version, just this time we need to worry
 * about endian related issues.
 */
function wgint16(val, endian, buffer, offset)
{
	if (endian == 'big') {
		buffer[offset] = (val & 0xff00) >>> 8;
		buffer[offset+1] = val & 0x00ff;
	} else {
		buffer[offset+1] = (val & 0xff00) >>> 8;
		buffer[offset] = val & 0x00ff;
	}
}

function wuint16(value, endian, buffer, offset)
{
	var val;

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 1 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = prepuint(value, 0xffff);
	wgint16(val, endian, buffer, offset);
}

/*
 * The 32-bit version is going to have to be a little different unfortunately.
 * We can't quite bitshift to get the largest byte, because that would end up
 * getting us caught by the signed values.
 *
 * And yes, we do want to subtract out the lower part by default. This means
 * that when we do the division, it will be treated as a bit shift and we won't
 * end up generating a floating point value. If we did generate a floating point
 * value we'd have to truncate it intelligently, this saves us that problem and
 * may even be somewhat faster under the hood.
 */
function wgint32(val, endian, buffer, offset)
{
	if (endian == 'big') {
		buffer[offset] = (val - (val & 0x00ffffff)) / Math.pow(2, 24);
		buffer[offset+1] = (val >>> 16) & 0xff;
		buffer[offset+2] = (val >>> 8) & 0xff;
		buffer[offset+3] = val & 0xff;
	} else {
		buffer[offset+3] = (val - (val & 0x00ffffff)) /
		    Math.pow(2, 24);
		buffer[offset+2] = (val >>> 16) & 0xff;
		buffer[offset+1] = (val >>> 8) & 0xff;
		buffer[offset] = val & 0xff;
	}
}

function wuint32(value, endian, buffer, offset)
{
	var val;

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = prepuint(value, 0xffffffff);
	wgint32(val, endian, buffer, offset);
}

/*
 * Unlike the other versions, we expect the value to be in the form of two
 * arrays where value[0] << 32 + value[1] would result in the value that we
 * want.
 */
function wgint64(value, endian, buffer, offset)
{
	if (endian == 'big') {
		wgint32(value[0], endian, buffer, offset);
		wgint32(value[1], endian, buffer, offset+4);
	} else {
		wgint32(value[0], endian, buffer, offset+4);
		wgint32(value[1], endian, buffer, offset);
	}
}

function wuint64(value, endian, buffer, offset)
{
	if (value === undefined)
		throw (new Error('missing value'));

	if (!(value instanceof Array))
		throw (new Error('value must be an array'));

	if (value.length != 2)
		throw (new Error('value must be an array of length 2'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 7 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	prepuint(value[0], 0xffffffff);
	prepuint(value[1], 0xffffffff);
	wgint64(value, endian, buffer, offset);
}

/*
 * We now move onto our friends in the signed number category. Unlike unsigned
 * numbers, we're going to have to worry a bit more about how we put values into
 * arrays. Since we are only worrying about signed 32-bit values, we're in
 * slightly better shape. Unfortunately, we really can't do our favorite binary
 * & in this system. It really seems to do the wrong thing. For example:
 *
 * > -32 & 0xff
 * 224
 *
 * What's happening above is really: 0xe0 & 0xff = 0xe0. However, the results of
 * this aren't treated as a signed number. Ultimately a bad thing.
 *
 * What we're going to want to do is basically create the unsigned equivalent of
 * our representation and pass that off to the wuint* functions. To do that
 * we're going to do the following:
 *
 *  - if the value is positive
 *	we can pass it directly off to the equivalent wuint
 *  - if the value is negative
 *	we do the following computation:
 *	mb + val + 1, where
 *	mb	is the maximum unsigned value in that byte size
 *	val	is the Javascript negative integer
 *
 *
 * As a concrete value, take -128. In signed 16 bits this would be 0xff80. If
 * you do out the computations:
 *
 * 0xffff - 128 + 1
 * 0xffff - 127
 * 0xff80
 *
 * You can then encode this value as the signed version. This is really rather
 * hacky, but it should work and get the job done which is our goal here.
 *
 * Thus the overall flow is:
 *   -  Truncate the floating point part of the number
 *   -  We don't have to take the modulus, because the unsigned versions will
 *   	take care of that for us. And we don't have to worry about that
 *   	potentially causing bad things to happen because of sign extension
 *   -  Pass it off to the appropriate unsigned version, potentially modifying
 *	the negative portions as necessary.
 */

/*
 * A series of checks to make sure we actually have a signed 32-bit number
 */
function prepsint(value, max, min)
{
	if (typeof (value) != 'number')
		throw (new (Error('cannot write a non-number as a number')));

	if (value > max)
		throw (new Error('value larger than maximum allowed value'));

	if (value < min)
		throw (new Error('value smaller than minimum allowed value'));

	if (Math.floor(value) !== value)
		throw (new Error('value has a fractional component'));

	return (value);
}

/*
 * The 8-bit version of the signed value. Overall, fairly straightforward.
 */
function wsint8(value, endian, buffer, offset)
{
	var val;

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = prepsint(value, 0x7f, -0x80);
	if (val >= 0)
		wuint8(val, endian, buffer, offset);
	else
		wuint8(0xff + val + 1, endian, buffer, offset);
}

/*
 * The 16-bit version of the signed value. Also, fairly straightforward.
 */
function wsint16(value, endian, buffer, offset)
{
	var val;

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 1 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = prepsint(value, 0x7fff, -0x8000);
	if (val >= 0)
		wgint16(val, endian, buffer, offset);
	else
		wgint16(0xffff + val + 1, endian, buffer, offset);

}

/*
 * We can do this relatively easily by leveraging the code used for 32-bit
 * unsigned code.
 */
function wsint32(value, endian, buffer, offset)
{
	var val;

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	val = prepsint(value, 0x7fffffff, -0x80000000);
	if (val >= 0)
		wgint32(val, endian, buffer, offset);
	else
		wgint32(0xffffffff + val + 1, endian, buffer, offset);
}

/*
 * The signed 64 bit integer should by in the same format as when received.
 * Mainly it should ensure that the value is an array of two integers where
 * value[0] << 32 + value[1] is the desired number. Furthermore, the two values
 * need to be equal.
 */
function wsint64(value, endian, buffer, offset)
{
	var vzpos, vopos;
	var vals = new Array(2);

	if (value === undefined)
		throw (new Error('missing value'));

	if (!(value instanceof Array))
		throw (new Error('value must be an array'));

	if (value.length != 2)
		throw (new Error('value must be an array of length 2'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));

	if (offset + 7 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	/*
	 * We need to make sure that we have the same sign on both values. The
	 * hokiest way to to do this is to multiply the number by +inf. If we do
	 * this, we'll get either +/-inf depending on the sign of the value.
	 * Once we have this, we can compare it to +inf to see if the number is
	 * positive or not.
	 */
	vzpos = (value[0] * Number.POSITIVE_INFINITY) ==
	    Number.POSITIVE_INFINITY;
	vopos = (value[1] * Number.POSITIVE_INFINITY) ==
	    Number.POSITIVE_INFINITY;

	/*
	 * If either of these is zero, then we don't actually need this check.
	 */
	if (value[0] != 0 && value[1] != 0 && vzpos != vopos)
		throw (new Error('Both entries in the array must have ' +
		    'the same sign'));

	/*
	 * Doing verification for a signed 64-bit integer is actually a big
	 * trickier than it appears. We can't quite use our standard techniques
	 * because we need to compare both sets of values. The first value is
	 * pretty straightforward. If the first value is beond the extremes than
	 * we error out. However, the valid range of the second value varies
	 * based on the first one. If the first value is negative, and *not* the
	 * largest negative value, than it can be any integer within the range [
	 * 0, 0xffffffff ]. If it is the largest negative number, it must be
	 * zero.
	 *
	 * If the first number is positive, than it doesn't matter what the
	 * value is. We just simply have to make sure we have a valid positive
	 * integer.
	 */
	if (vzpos) {
		prepuint(value[0], 0x7fffffff);
		prepuint(value[1], 0xffffffff);
	} else {
		prepsint(value[0], 0, -0x80000000);
		prepsint(value[1], 0, -0xffffffff);
		if (value[0] == -0x80000000 && value[1] != 0)
			throw (new Error('value smaller than minimum ' +
			    'allowed value'));
	}

	/* Fix negative numbers */
	if (value[0] < 0 || value[1] < 0) {
		vals[0] = 0xffffffff - Math.abs(value[0]);
		vals[1] = 0x100000000 - Math.abs(value[1]);
		if (vals[1] == 0x100000000) {
			vals[1] = 0;
			vals[0]++;
		}
	} else {
		vals[0] = value[0];
		vals[1] = value[1];
	}
	wgint64(vals, endian, buffer, offset);
}

/*
 * Now we are moving onto the weirder of these, the float and double. For this
 * we're going to just have to do something that's pretty weird. First off, we
 * have no way to get at the underlying float representation, at least not
 * easily. But that doesn't mean we can't figure it out, we just have to use our
 * heads.
 *
 * One might propose to use Number.toString(2). Of course, this is not really
 * that good, because the ECMAScript 262 v3 Standard says the following Section
 * 15.7.4.2-Number.prototype.toString (radix):
 *
 * If radix is an integer from 2 to 36, but not 10, the result is a string, the
 * choice of which is implementation-dependent.
 *
 * Well that doesn't really help us one bit now does it? We could use the
 * standard base 10 version of the string, but that's just going to create more
 * errors as we end up trying to convert it back to a binary value. So, really
 * this just means we have to be non-lazy and parse the structure intelligently.
 *
 * First off, we can do the basic checks: NaN, positive and negative infinity.
 *
 * Now that those are done we can work backwards to generate the mantissa and
 * exponent.
 *
 * The first thing we need to do is determine the sign bit, easy to do, check
 * whether the value is less than 0. And convert the number to its absolute
 * value representation. Next, we need to determine if the value is less than
 * one or greater than or equal to one and from there determine what power was
 * used to get there. What follows is now specific to floats, though the general
 * ideas behind this will hold for doubles as well, but the exact numbers
 * involved will change.
 *
 * Once we have that power we can determine the exponent and the mantissa. Call
 * the value that has the number of bits to reach the power ebits. In the
 * general case they have the following values:
 *
 *	exponent	127 + ebits
 *	mantissa	value * 2^(23 - ebits) & 0x7fffff
 *
 * In the case where the value of ebits is <= -127 we are now in the case where
 * we no longer have normalized numbers. In this case the values take on the
 * following values:
 *
 * 	exponent	0
 *	mantissa	value * 2^149 & 0x7fffff
 *
 * Once we have the values for the sign, mantissa, and exponent. We reconstruct
 * the four bytes as follows:
 *
 *	byte0		sign bit and seven most significant bits from the exp
 *			sign << 7 | (exponent & 0xfe) >>> 1
 *
 *	byte1		lsb from the exponent and 7 top bits from the mantissa
 *			(exponent & 0x01) << 7 | (mantissa & 0x7f0000) >>> 16
 *
 *	byte2		bits 8-15 (zero indexing) from mantissa
 *			mantissa & 0xff00 >> 8
 *
 *	byte3		bits 0-7 from mantissa
 *			mantissa & 0xff
 *
 * Once we have this we have to assign them into the buffer in proper endian
 * order.
 */

/*
 * Compute the log base 2 of the value. Now, someone who remembers basic
 * properties of logarithms will point out that we could use the change of base
 * formula for logs, and in fact that would be astute, because that's what we'll
 * do for now. It feels cleaner, albeit it may be less efficient than just
 * iterating and dividing by 2. We may want to come back and revisit that some
 * day.
 */
function log2(value)
{
	return (Math.log(value) / Math.log(2));
}

/*
 * Helper to determine the exponent of the number we're looking at.
 */
function intexp(value)
{
	return (Math.floor(log2(value)));
}

/*
 * Helper to determine the exponent of the fractional part of the value.
 */
function fracexp(value)
{
	return (Math.floor(log2(value)));
}

function wfloat(value, endian, buffer, offset)
{
	var sign, exponent, mantissa, ebits;
	var bytes = [];

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));


	if (offset + 3 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	if (isNaN(value)) {
		sign = 0;
		exponent = 0xff;
		mantissa = 23;
	} else if (value == Number.POSITIVE_INFINITY) {
		sign = 0;
		exponent = 0xff;
		mantissa = 0;
	} else if (value == Number.NEGATIVE_INFINITY) {
		sign = 1;
		exponent = 0xff;
		mantissa = 0;
	} else {
		/* Well we have some work to do */

		/* Thankfully the sign bit is trivial */
		if (value < 0) {
			sign = 1;
			value = Math.abs(value);
		} else {
			sign = 0;
		}

		/* Use the correct function to determine number of bits */
		if (value < 1)
			ebits = fracexp(value);
		else
			ebits = intexp(value);

		/* Time to deal with the issues surrounding normalization */
		if (ebits <= -127) {
			exponent = 0;
			mantissa = (value * Math.pow(2, 149)) & 0x7fffff;
		} else {
			exponent = 127 + ebits;
			mantissa = value * Math.pow(2, 23 - ebits);
			mantissa &= 0x7fffff;
		}
	}

	bytes[0] = sign << 7 | (exponent & 0xfe) >>> 1;
	bytes[1] = (exponent & 0x01) << 7 | (mantissa & 0x7f0000) >>> 16;
	bytes[2] = (mantissa & 0x00ff00) >>> 8;
	bytes[3] = mantissa & 0x0000ff;

	if (endian == 'big') {
		buffer[offset] = bytes[0];
		buffer[offset+1] = bytes[1];
		buffer[offset+2] = bytes[2];
		buffer[offset+3] = bytes[3];
	} else {
		buffer[offset] = bytes[3];
		buffer[offset+1] = bytes[2];
		buffer[offset+2] = bytes[1];
		buffer[offset+3] = bytes[0];
	}
}

/*
 * Now we move onto doubles. Doubles are similar to floats in pretty much all
 * ways except that the processing isn't quite as straightforward because we
 * can't always use shifting, i.e. we have > 32 bit values.
 *
 * We're going to proceed in an identical fashion to floats and utilize the same
 * helper functions. All that really is changing are the specific values that we
 * use to do the calculations. Thus, to review we have to do the following.
 *
 * First get the sign bit and convert the value to its absolute value
 * representation. Next, we determine the number of bits that we used to get to
 * the value, branching whether the value is greater than or less than 1. Once
 * we have that value which we will again call ebits, we have to do the
 * following in the general case:
 *
 *	exponent	1023 + ebits
 *	mantissa	[value * 2^(52 - ebits)] % 2^52
 *
 * In the case where the value of ebits <= -1023 we no longer use normalized
 * numbers, thus like with floats we have to do slightly different processing:
 *
 *	exponent	0
 *	mantissa	[value * 2^1074] % 2^52
 *
 * Once we have determined the sign, exponent and mantissa we can construct the
 * bytes as follows:
 *
 *	byte0		sign bit and seven most significant bits form the exp
 *			sign << 7 | (exponent & 0x7f0) >>> 4
 *
 *	byte1		Remaining 4 bits from the exponent and the four most
 *			significant bits from the mantissa 48-51
 *			(exponent & 0x00f) << 4 | mantissa >>> 48
 *
 *	byte2		Bits 40-47 from the mantissa
 *			(mantissa >>> 40) & 0xff
 *
 *	byte3		Bits 32-39 from the mantissa
 *			(mantissa >>> 32) & 0xff
 *
 *	byte4		Bits 24-31 from the mantissa
 *			(mantissa >>> 24) & 0xff
 *
 *	byte5		Bits 16-23 from the Mantissa
 *			(mantissa >>> 16) & 0xff
 *
 *	byte6		Bits 8-15 from the mantissa
 *			(mantissa >>> 8) & 0xff
 *
 *	byte7		Bits 0-7 from the mantissa
 *			mantissa & 0xff
 *
 * Now we can't quite do the right shifting that we want in bytes 1 - 3, because
 * we'll have extended too far and we'll lose those values when we try and do
 * the shift. Instead we have to use an alternate approach. To try and stay out
 * of floating point, what we'll do is say that mantissa -= bytes[4-7] and then
 * divide by 2^32. Once we've done that we can use binary arithmetic. Oof,
 * that's ugly, but it seems to avoid using floating point (just based on how v8
 * seems to be optimizing for base 2 arithmetic).
 */
function wdouble(value, endian, buffer, offset)
{
	var sign, exponent, mantissa, ebits;
	var bytes = [];

	if (value === undefined)
		throw (new Error('missing value'));

	if (endian === undefined)
		throw (new Error('missing endian'));

	if (buffer === undefined)
		throw (new Error('missing buffer'));

	if (offset === undefined)
		throw (new Error('missing offset'));


	if (offset + 7 >= buffer.length)
		throw (new Error('Trying to read beyond buffer length'));

	if (isNaN(value)) {
		sign = 0;
		exponent = 0x7ff;
		mantissa = 23;
	} else if (value == Number.POSITIVE_INFINITY) {
		sign = 0;
		exponent = 0x7ff;
		mantissa = 0;
	} else if (value == Number.NEGATIVE_INFINITY) {
		sign = 1;
		exponent = 0x7ff;
		mantissa = 0;
	} else {
		/* Well we have some work to do */

		/* Thankfully the sign bit is trivial */
		if (value < 0) {
			sign = 1;
			value = Math.abs(value);
		} else {
			sign = 0;
		}

		/* Use the correct function to determine number of bits */
		if (value < 1)
			ebits = fracexp(value);
		else
			ebits = intexp(value);

		/*
		 * This is a total hack to determine a denormalized value.
		 * Unfortunately, we sometimes do not get a proper value for
		 * ebits, i.e. we lose the values that would get rounded off.
		 *
		 *
		 * The astute observer may wonder why we would be
		 * multiplying by two Math.pows rather than just summing
		 * them. Well, that's to get around a small bug in the
		 * way v8 seems to implement the function. On occasion
		 * doing:
		 *
		 * foo * Math.pow(2, 1023 + 51)
		 *
		 * Causes us to overflow to infinity, where as doing:
		 *
		 * foo * Math.pow(2, 1023) * Math.pow(2, 51)
		 *
		 * Does not cause us to overflow. Go figure.
		 *
		 */
		if (value <= 2.225073858507201e-308 || ebits <= -1023) {
			exponent = 0;
			mantissa = value * Math.pow(2, 1023) * Math.pow(2, 51);
			mantissa %= Math.pow(2, 52);
		} else {
			/*
			 * We might have gotten fucked by our floating point
			 * logarithm magic. This is rather crappy, but that's
			 * our luck. If we just had a log base 2 or access to
			 * the stupid underlying representation this would have
			 * been much easier and we wouldn't have such stupid
			 * kludges or hacks.
			 */
			if (ebits > 1023)
				ebits = 1023;
			exponent = 1023 + ebits;
			mantissa = value * Math.pow(2, -ebits);
			mantissa *= Math.pow(2, 52);
			mantissa %= Math.pow(2, 52);
		}
	}

	/* Fill the bytes in backwards to deal with the size issues */
	bytes[7] = mantissa & 0xff;
	bytes[6] = (mantissa >>> 8) & 0xff;
	bytes[5] = (mantissa >>> 16) & 0xff;
	mantissa = (mantissa - (mantissa & 0xffffff)) / Math.pow(2, 24);
	bytes[4] = mantissa & 0xff;
	bytes[3] = (mantissa >>> 8) & 0xff;
	bytes[2] = (mantissa >>> 16) & 0xff;
	bytes[1] = (exponent & 0x00f) << 4 | mantissa >>> 24;
	bytes[0] = (sign << 7) | (exponent & 0x7f0) >>> 4;

	if (endian == 'big') {
		buffer[offset] = bytes[0];
		buffer[offset+1] = bytes[1];
		buffer[offset+2] = bytes[2];
		buffer[offset+3] = bytes[3];
		buffer[offset+4] = bytes[4];
		buffer[offset+5] = bytes[5];
		buffer[offset+6] = bytes[6];
		buffer[offset+7] = bytes[7];
	} else {
		buffer[offset+7] = bytes[0];
		buffer[offset+6] = bytes[1];
		buffer[offset+5] = bytes[2];
		buffer[offset+4] = bytes[3];
		buffer[offset+3] = bytes[4];
		buffer[offset+2] = bytes[5];
		buffer[offset+1] = bytes[6];
		buffer[offset] = bytes[7];
	}
}

/*
 * Actually export our work above. One might argue that we shouldn't expose
 * these interfaces and just force people to use the higher level abstractions
 * around this work. However, unlike say other libraries we've come across, this
 * interface has several properties: it makes sense, it's simple, and it's
 * useful.
 */
exports.ruint8 = ruint8;
exports.ruint16 = ruint16;
exports.ruint32 = ruint32;
exports.ruint64 = ruint64;
exports.wuint8 = wuint8;
exports.wuint16 = wuint16;
exports.wuint32 = wuint32;
exports.wuint64 = wuint64;

exports.rsint8 = rsint8;
exports.rsint16 = rsint16;
exports.rsint32 = rsint32;
exports.rsint64 = rsint64;
exports.wsint8 = wsint8;
exports.wsint16 = wsint16;
exports.wsint32 = wsint32;
exports.wsint64 = wsint64;

exports.rfloat = rfloat;
exports.rdouble = rdouble;
exports.wfloat = wfloat;
exports.wdouble = wdouble;

},{"assert":162}],119:[function(require,module,exports){
(function (Buffer){
/*
 * rm - Feb 2011
 * ctype.js
 *
 * This module provides a simple abstraction towards reading and writing
 * different types of binary data. It is designed to use ctio.js and provide a
 * richer and more expressive API on top of it.
 *
 * By default we support the following as built in basic types:
 *	int8_t
 *	int16_t
 *	int32_t
 *	uint8_t
 *	uint16_t
 *	uint32_t
 *	uint64_t
 *	float
 *	double
 *	char
 *	char[]
 *
 * Each type is returned as a Number, with the exception of char and char[]
 * which are returned as Node Buffers. A char is considered a uint8_t.
 *
 * Requests to read and write data are specified as an array of JSON objects.
 * This is also the same way that one declares structs. Even if just a single
 * value is requested, it must be done as a struct. The array order determines
 * the order that we try and read values. Each entry has the following format
 * with values marked with a * being optional.
 *
 * { key: { type: /type/, value*: /value/, offset*: /offset/ }
 *
 * If offset is defined, we lseek(offset, SEEK_SET) before reading the next
 * value. Value is defined when we're writing out data, otherwise it's ignored.
 *
 */

var mod_ctf = require('./ctf.js');
var mod_ctio = require('./ctio.js');
var mod_assert = require('assert');

/*
 * This is the set of basic types that we support.
 *
 *	read		The function to call to read in a value from a buffer
 *
 *	write		The function to call to write a value to a buffer
 *
 */
var deftypes = {
    'uint8_t':  { read: ctReadUint8, write: ctWriteUint8 },
    'uint16_t': { read: ctReadUint16, write: ctWriteUint16 },
    'uint32_t': { read: ctReadUint32, write: ctWriteUint32 },
    'uint64_t': { read: ctReadUint64, write: ctWriteUint64 },
    'int8_t': { read: ctReadSint8, write: ctWriteSint8 },
    'int16_t': { read: ctReadSint16, write: ctWriteSint16 },
    'int32_t': { read: ctReadSint32, write: ctWriteSint32 },
    'int64_t': { read: ctReadSint64, write: ctWriteSint64 },
    'float': { read: ctReadFloat, write: ctWriteFloat },
    'double': { read: ctReadDouble, write: ctWriteDouble },
    'char': { read: ctReadChar, write: ctWriteChar },
    'char[]': { read: ctReadCharArray, write: ctWriteCharArray }
};

/*
 * The following are wrappers around the CType IO low level API. They encode
 * knowledge about the size and return something in the expected format.
 */
function ctReadUint8(endian, buffer, offset)
{
	var val = mod_ctio.ruint8(buffer, endian, offset);
	return ({ value: val, size: 1 });
}

function ctReadUint16(endian, buffer, offset)
{
	var val = mod_ctio.ruint16(buffer, endian, offset);
	return ({ value: val, size: 2 });
}

function ctReadUint32(endian, buffer, offset)
{
	var val = mod_ctio.ruint32(buffer, endian, offset);
	return ({ value: val, size: 4 });
}

function ctReadUint64(endian, buffer, offset)
{
	var val = mod_ctio.ruint64(buffer, endian, offset);
	return ({ value: val, size: 8 });
}

function ctReadSint8(endian, buffer, offset)
{
	var val = mod_ctio.rsint8(buffer, endian, offset);
	return ({ value: val, size: 1 });
}

function ctReadSint16(endian, buffer, offset)
{
	var val = mod_ctio.rsint16(buffer, endian, offset);
	return ({ value: val, size: 2 });
}

function ctReadSint32(endian, buffer, offset)
{
	var val = mod_ctio.rsint32(buffer, endian, offset);
	return ({ value: val, size: 4 });
}

function ctReadSint64(endian, buffer, offset)
{
	var val = mod_ctio.rsint64(buffer, endian, offset);
	return ({ value: val, size: 8 });
}

function ctReadFloat(endian, buffer, offset)
{
	var val = mod_ctio.rfloat(buffer, endian, offset);
	return ({ value: val, size: 4 });
}

function ctReadDouble(endian, buffer, offset)
{
	var val = mod_ctio.rdouble(buffer, endian, offset);
	return ({ value: val, size: 8 });
}

/*
 * Reads a single character into a node buffer
 */
function ctReadChar(endian, buffer, offset)
{
	var res = new Buffer(1);
	res[0] = mod_ctio.ruint8(buffer, endian, offset);
	return ({ value: res, size: 1 });
}

function ctReadCharArray(length, endian, buffer, offset)
{
	var ii;
	var res = new Buffer(length);

	for (ii = 0; ii < length; ii++)
		res[ii] = mod_ctio.ruint8(buffer, endian, offset + ii);

	return ({ value: res, size: length });
}

function ctWriteUint8(value, endian, buffer, offset)
{
	mod_ctio.wuint8(value, endian, buffer, offset);
	return (1);
}

function ctWriteUint16(value, endian, buffer, offset)
{
	mod_ctio.wuint16(value, endian, buffer, offset);
	return (2);
}

function ctWriteUint32(value, endian, buffer, offset)
{
	mod_ctio.wuint32(value, endian, buffer, offset);
	return (4);
}

function ctWriteUint64(value, endian, buffer, offset)
{
	mod_ctio.wuint64(value, endian, buffer, offset);
	return (8);
}

function ctWriteSint8(value, endian, buffer, offset)
{
	mod_ctio.wsint8(value, endian, buffer, offset);
	return (1);
}

function ctWriteSint16(value, endian, buffer, offset)
{
	mod_ctio.wsint16(value, endian, buffer, offset);
	return (2);
}

function ctWriteSint32(value, endian, buffer, offset)
{
	mod_ctio.wsint32(value, endian, buffer, offset);
	return (4);
}

function ctWriteSint64(value, endian, buffer, offset)
{
	mod_ctio.wsint64(value, endian, buffer, offset);
	return (8);
}

function ctWriteFloat(value, endian, buffer, offset)
{
	mod_ctio.wfloat(value, endian, buffer, offset);
	return (4);
}

function ctWriteDouble(value, endian, buffer, offset)
{
	mod_ctio.wdouble(value, endian, buffer, offset);
	return (8);
}

/*
 * Writes a single character into a node buffer
 */
function ctWriteChar(value, endian, buffer, offset)
{
	if (!(value instanceof Buffer))
		throw (new Error('Input must be a buffer'));

	mod_ctio.ruint8(value[0], endian, buffer, offset);
	return (1);
}

/*
 * We're going to write 0s into the buffer if the string is shorter than the
 * length of the array.
 */
function ctWriteCharArray(value, length, endian, buffer, offset)
{
	var ii;

	if (!(value instanceof Buffer))
		throw (new Error('Input must be a buffer'));

	if (value.length > length)
		throw (new Error('value length greater than array length'));

	for (ii = 0; ii < value.length && ii < length; ii++)
		mod_ctio.wuint8(value[ii], endian, buffer, offset + ii);

	for (; ii < length; ii++)
		mod_ctio.wuint8(0, endian, offset + ii);


	return (length);
}

/*
 * Each parser has their own set of types. We want to make sure that they each
 * get their own copy as they may need to modify it.
 */
function ctGetBasicTypes()
{
	var ret = {};
	var key;
	for (key in deftypes)
		ret[key] = deftypes[key];

	return (ret);
}

/*
 * Given a string in the form of type[length] we want to split this into an
 * object that extracts that information. We want to note that we could possibly
 * have nested arrays so this should only check the furthest one. It may also be
 * the case that we have no [] pieces, in which case we just return the current
 * type.
 */
function ctParseType(str)
{
	var begInd, endInd;
	var type, len;
	if (typeof (str) != 'string')
		throw (new Error('type must be a Javascript string'));

	endInd = str.lastIndexOf(']');
	if (endInd == -1) {
		if (str.lastIndexOf('[') != -1)
			throw (new Error('found invalid type with \'[\' but ' +
			    'no corresponding \']\''));

		return ({ type: str });
	}

	begInd = str.lastIndexOf('[');
	if (begInd == -1)
		throw (new Error('found invalid type with \']\' but ' +
		    'no corresponding \'[\''));

	if (begInd >= endInd)
		throw (new Error('malformed type, \']\' appears before \'[\''));

	type = str.substring(0, begInd);
	len = str.substring(begInd + 1, endInd);

	return ({ type: type, len: len });
}

/*
 * Given a request validate that all of the fields for it are valid and make
 * sense. This includes verifying the following notions:
 *  - Each type requested is present in types
 *  - Only allow a name for a field to be specified once
 *  - If an array is specified, validate that the requested field exists and
 *    comes before it.
 *  - If fields is defined, check that each entry has the occurrence of field
 */
function ctCheckReq(def, types, fields)
{
	var ii, jj;
	var req, keys, key;
	var found = {};

	if (!(def instanceof Array))
		throw (new Error('definition is not an array'));

	if (def.length === 0)
		throw (new Error('definition must have at least one element'));

	for (ii = 0; ii < def.length; ii++) {
		req = def[ii];
		if (!(req instanceof Object))
			throw (new Error('definition must be an array of' +
			    'objects'));

		keys = Object.keys(req);
		if (keys.length != 1)
			throw (new Error('definition entry must only have ' +
			    'one key'));

		if (keys[0] in found)
			throw (new Error('Specified name already ' +
			    'specified: ' + keys[0]));

		if (!('type' in req[keys[0]]))
			throw (new Error('missing required type definition'));

		key = ctParseType(req[keys[0]]['type']);

		/*
		 * We may have nested arrays, we need to check the validity of
		 * the types until the len field is undefined in key. However,
		 * each time len is defined we need to verify it is either an
		 * integer or corresponds to an already seen key.
		 */
		while (key['len'] !== undefined) {
			if (isNaN(parseInt(key['len'], 10))) {
				if (!(key['len'] in found))
					throw (new Error('Given an array ' +
					    'length without a matching type'));

			}

			key = ctParseType(key['type']);
		}

		/* Now we can validate if the type is valid */
		if (!(key['type'] in types))
			throw (new Error('type not found or typdefed: ' +
			    key['type']));

		/* Check for any required fields */
		if (fields !== undefined) {
			for (jj = 0; jj < fields.length; jj++) {
				if (!(fields[jj] in req[keys[0]]))
					throw (new Error('Missing required ' +
					    'field: ' + fields[jj]));
			}
		}

		found[keys[0]] = true;
	}
}


/*
 * Create a new instance of the parser. Each parser has its own store of
 * typedefs and endianness. Conf is an object with the following required
 * values:
 *
 *	endian		Either 'big' or 'little' do determine the endianness we
 *			want to read from or write to.
 *
 * And the following optional values:
 *
 * 	char-type	Valid options here are uint8 and int8. If uint8 is
 * 			specified this changes the default behavior of a single
 * 			char from being a buffer of a single character to being
 * 			a uint8_t. If int8, it becomes an int8_t instead.
 */
function CTypeParser(conf)
{
	if (!conf) throw (new Error('missing required argument'));

	if (!('endian' in conf))
		throw (new Error('missing required endian value'));

	if (conf['endian'] != 'big' && conf['endian'] != 'little')
		throw (new Error('Invalid endian type'));

	if ('char-type' in conf && (conf['char-type'] != 'uint8' &&
	    conf['char-type'] != 'int8'))
		throw (new Error('invalid option for char-type: ' +
		    conf['char-type']));

	this.endian = conf['endian'];
	this.types = ctGetBasicTypes();

	/*
	 * There may be a more graceful way to do this, but this will have to
	 * serve.
	 */
	if ('char-type' in conf && conf['char-type'] == 'uint8')
		this.types['char'] = this.types['uint8_t'];

	if ('char-type' in conf && conf['char-type'] == 'int8')
		this.types['char'] = this.types['int8_t'];
}

/*
 * Sets the current endian value for the Parser. If the value is not valid,
 * throws an Error.
 *
 *	endian		Either 'big' or 'little' do determine the endianness we
 *			want to read from or write to.
 *
 */
CTypeParser.prototype.setEndian = function (endian)
{
	if (endian != 'big' && endian != 'little')
		throw (new Error('invalid endian type, must be big or ' +
		    'little'));

	this.endian = endian;
};

/*
 * Returns the current value of the endian value for the parser.
 */
CTypeParser.prototype.getEndian = function ()
{
	return (this.endian);
};

/*
 * A user has requested to add a type, let us honor their request. Yet, if their
 * request doth spurn us, send them unto the Hells which Dante describes.
 *
 * 	name		The string for the type definition we're adding
 *
 *	value		Either a string that is a type/array name or an object
 *			that describes a struct.
 */
CTypeParser.prototype.typedef = function (name, value)
{
	var type;

	if (name === undefined)
		throw (new (Error('missing required typedef argument: name')));

	if (value === undefined)
		throw (new (Error('missing required typedef argument: value')));

	if (typeof (name) != 'string')
		throw (new (Error('the name of a type must be a string')));

	type = ctParseType(name);

	if (type['len'] !== undefined)
		throw (new Error('Cannot have an array in the typedef name'));

	if (name in this.types)
		throw (new Error('typedef name already present: ' + name));

	if (typeof (value) != 'string' && !(value instanceof Array))
		throw (new Error('typedef value must either be a string or ' +
		    'struct'));

	if (typeof (value) == 'string') {
		type = ctParseType(value);
		if (type['len'] !== undefined) {
			if (isNaN(parseInt(type['len'], 10)))
				throw (new (Error('typedef value must use ' +
				    'fixed size array when outside of a ' +
				    'struct')));
		}

		this.types[name] = value;
	} else {
		/* We have a struct, validate it */
		ctCheckReq(value, this.types);
		this.types[name] = value;
	}
};

/*
 * Include all of the typedefs, but none of the built in types. This should be
 * treated as read-only.
 */
CTypeParser.prototype.lstypes = function ()
{
	var key;
	var ret = {};

	for (key in this.types) {
		if (key in deftypes)
			continue;
		ret[key] = this.types[key];
	}

	return (ret);
};

/*
 * Given a type string that may have array types that aren't numbers, try and
 * fill them in from the values object. The object should be of the format where
 * indexing into it should return a number for that type.
 *
 *	str		The type string
 *
 *	values		An object that can be used to fulfill type information
 */
function ctResolveArray(str, values)
{
	var ret = '';
	var type = ctParseType(str);

	while (type['len'] !== undefined) {
		if (isNaN(parseInt(type['len'], 10))) {
			if (typeof (values[type['len']]) != 'number')
				throw (new Error('cannot sawp in non-number ' +
				    'for array value'));
			ret = '[' + values[type['len']] + ']' + ret;
		} else {
			ret = '[' + type['len'] + ']' + ret;
		}
		type = ctParseType(type['type']);
	}

	ret = type['type'] + ret;

	return (ret);
}

/*
 * [private] Either the typedef resolves to another type string or to a struct.
 * If it resolves to a struct, we just pass it off to read struct. If not, we
 * can just pass it off to read entry.
 */
CTypeParser.prototype.resolveTypedef = function (type, dispatch, buffer,
    offset, value)
{
	var pt;

	mod_assert.ok(type in this.types);
	if (typeof (this.types[type]) == 'string') {
		pt = ctParseType(this.types[type]);
		if (dispatch == 'read')
			return (this.readEntry(pt, buffer, offset));
		else if (dispatch == 'write')
			return (this.writeEntry(value, pt, buffer, offset));
		else
			throw (new Error('invalid dispatch type to ' +
			    'resolveTypedef'));
	} else {
		if (dispatch == 'read')
			return (this.readStruct(this.types[type], buffer,
			    offset));
		else if (dispatch == 'write')
			return (this.writeStruct(value, this.types[type],
			    buffer, offset));
		else
			throw (new Error('invalid dispatch type to ' +
			    'resolveTypedef'));
	}

};

/*
 * [private] Try and read in the specific entry.
 */
CTypeParser.prototype.readEntry = function (type, buffer, offset)
{
	var parse, len;

	/*
	 * Because we want to special case char[]s this is unfortunately
	 * a bit uglier than it really should be. We want to special
	 * case char[]s so that we return a node buffer, thus they are a
	 * first class type where as all other arrays just call into a
	 * generic array routine which calls their data-specific routine
	 * the specified number of times.
	 *
	 * The valid dispatch options we have are:
	 *  - Array and char => char[] handler
	 *  - Generic array handler
	 *  - Generic typedef handler
	 *  - Basic type handler
	 */
	if (type['len'] !== undefined) {
		len = parseInt(type['len'], 10);
		if (isNaN(len))
			throw (new Error('somehow got a non-numeric length'));

		if (type['type'] == 'char')
			parse = this.types['char[]']['read'](len,
			    this.endian, buffer, offset);
		else
			parse = this.readArray(type['type'],
			    len, buffer, offset);
	} else {
		if (type['type'] in deftypes)
			parse = this.types[type['type']]['read'](this.endian,
			    buffer, offset);
		else
			parse = this.resolveTypedef(type['type'], 'read',
			    buffer, offset);
	}

	return (parse);
};

/*
 * [private] Read an array of data
 */
CTypeParser.prototype.readArray = function (type, length, buffer, offset)
{
	var ii, ent, pt;
	var baseOffset = offset;
	var ret = new Array(length);
	pt = ctParseType(type);

	for (ii = 0; ii < length; ii++) {
		ent = this.readEntry(pt, buffer, offset);
		offset += ent['size'];
		ret[ii] = ent['value'];
	}

	return ({ value: ret, size: offset - baseOffset });
};

/*
 * [private] Read a single struct in.
 */
CTypeParser.prototype.readStruct = function (def, buffer, offset)
{
	var parse, ii, type, entry, key;
	var baseOffset = offset;
	var ret = {};

	/* Walk it and handle doing what's necessary */
	for (ii = 0; ii < def.length; ii++) {
		key = Object.keys(def[ii])[0];
		entry = def[ii][key];

		/* Resolve all array values */
		type = ctParseType(ctResolveArray(entry['type'], ret));

		if ('offset' in entry)
			offset = baseOffset + entry['offset'];

		parse = this.readEntry(type, buffer, offset);

		offset += parse['size'];
		ret[key] = parse['value'];
	}

	return ({ value: ret, size: (offset-baseOffset)});
};

/*
 * This is what we were born to do. We read the data from a buffer and return it
 * in an object whose keys match the values from the object.
 *
 *	def		The array definition of the data to read in
 *
 *	buffer		The buffer to read data from
 *
 *	offset		The offset to start writing to
 *
 * Returns an object where each key corresponds to an entry in def and the value
 * is the read value.
 */
CTypeParser.prototype.readData = function (def, buffer, offset)
{
	/* Sanity check for arguments */
	if (def === undefined)
		throw (new Error('missing definition for what we should be' +
		    'parsing'));

	if (buffer === undefined)
		throw (new Error('missing buffer for what we should be ' +
		    'parsing'));

	if (offset === undefined)
		throw (new Error('missing offset for what we should be ' +
		    'parsing'));

	/* Sanity check the object definition */
	ctCheckReq(def, this.types);

	return (this.readStruct(def, buffer, offset)['value']);
};

/*
 * [private] Write out an array of data
 */
CTypeParser.prototype.writeArray = function (value, type, length, buffer,
    offset)
{
	var ii, pt;
	var baseOffset = offset;
	if (!(value instanceof Array))
		throw (new Error('asked to write an array, but value is not ' +
		    'an array'));

	if (value.length != length)
		throw (new Error('asked to write array of length ' + length +
		    ' but that does not match value length: ' + value.length));

	pt = ctParseType(type);
	for (ii = 0; ii < length; ii++)
		offset += this.writeEntry(value[ii], pt, buffer, offset);

	return (offset - baseOffset);
};

/*
 * [private] Write the specific entry
 */
CTypeParser.prototype.writeEntry = function (value, type, buffer, offset)
{
	var len, ret;

	if (type['len'] !== undefined) {
		len = parseInt(type['len'], 10);
		if (isNaN(len))
			throw (new Error('somehow got a non-numeric length'));

		if (type['type'] == 'char')
			ret = this.types['char[]']['write'](value, len,
			    this.endian, buffer, offset);
		else
			ret = this.writeArray(value, type['type'],
			    len, buffer, offset);
	} else {
		if (type['type'] in deftypes)
			ret = this.types[type['type']]['write'](value,
			    this.endian, buffer, offset);
		else
			ret = this.resolveTypedef(type['type'], 'write',
			    buffer, offset, value);
	}

	return (ret);
};

/*
 * [private] Write a single struct out.
 */
CTypeParser.prototype.writeStruct = function (value, def, buffer, offset)
{
	var ii, entry, type, key;
	var baseOffset = offset;
	var vals = {};

	for (ii = 0; ii < def.length; ii++) {
		key = Object.keys(def[ii])[0];
		entry = def[ii][key];

		type = ctParseType(ctResolveArray(entry['type'], vals));

		if ('offset' in entry)
			offset = baseOffset + entry['offset'];

		offset += this.writeEntry(value[ii], type, buffer, offset);
		/* Now that we've written it out, we can use it for arrays */
		vals[key] = value[ii];
	}

	return (offset);
};

/*
 * Unfortunately, we're stuck with the sins of an initial poor design. Because
 * of that, we are going to have to support the old way of writing data via
 * writeData. There we insert the values that you want to write into the
 * definition. A little baroque. Internally, we use the new model. So we need to
 * just get those values out of there. But to maintain the principle of least
 * surprise, we're not going to modify the input data.
 */
function getValues(def)
{
	var ii, out, key;
	out = [];
	for (ii = 0; ii < def.length; ii++) {
		key = Object.keys(def[ii])[0];
		mod_assert.ok('value' in def[ii][key]);
		out.push(def[ii][key]['value']);
	}

	return (out);
}

/*
 * This is the second half of what we were born to do, write out the data
 * itself. Historically this function required you to put your values in the
 * definition section. This was not the smartest thing to do and a bit of an
 * oversight to be honest. As such, this function now takes a values argument.
 * If values is non-null and non-undefined, it will be used to determine the
 * values. This means that the old method is still supported, but is no longer
 * acceptable.
 *
 *	def		The array definition of the data to write out with
 *			values
 *
 *	buffer		The buffer to write to
 *
 *	offset		The offset in the buffer to write to
 *
 *	values		An array of values to write.
 */
CTypeParser.prototype.writeData = function (def, buffer, offset, values)
{
	var hv;

	if (def === undefined)
		throw (new Error('missing definition for what we should be' +
		    'parsing'));

	if (buffer === undefined)
		throw (new Error('missing buffer for what we should be ' +
		    'parsing'));

	if (offset === undefined)
		throw (new Error('missing offset for what we should be ' +
		    'parsing'));

	hv = (values != null && values != undefined);
	if (hv) {
		if (!Array.isArray(values))
			throw (new Error('missing values for writing'));
		ctCheckReq(def, this.types);
	} else {
		ctCheckReq(def, this.types, [ 'value' ]);
	}

	this.writeStruct(hv ? values : getValues(def), def, buffer, offset);
};

/*
 * Functions to go to and from 64 bit numbers in a way that is compatible with
 * Javascript limitations. There are two sets. One where the user is okay with
 * an approximation and one where they are definitely not okay with an
 * approximation.
 */

/*
 * Attempts to convert an array of two integers returned from rsint64 / ruint64
 * into an absolute 64 bit number. If however the value would exceed 2^52 this
 * will instead throw an error. The mantissa in a double is a 52 bit number and
 * rather than potentially give you a value that is an approximation this will
 * error. If you would rather an approximation, please see toApprox64.
 *
 *	val		An array of two 32-bit integers
 */
function toAbs64(val)
{
	if (val === undefined)
		throw (new Error('missing required arg: value'));

	if (!Array.isArray(val))
		throw (new Error('value must be an array'));

	if (val.length != 2)
		throw (new Error('value must be an array of length 2'));

	/* We have 20 bits worth of precision in this range */
	if (val[0] >= 0x100000)
		throw (new Error('value would become approximated'));

	return (val[0] * Math.pow(2, 32) + val[1]);
}

/*
 * Will return the 64 bit value as returned in an array from rsint64 / ruint64
 * to a value as close as it can. Note that Javascript stores all numbers as a
 * double and the mantissa only has 52 bits. Thus this version may approximate
 * the value.
 *
 *	val		An array of two 32-bit integers
 */
function toApprox64(val)
{
	if (val === undefined)
		throw (new Error('missing required arg: value'));

	if (!Array.isArray(val))
		throw (new Error('value must be an array'));

	if (val.length != 2)
		throw (new Error('value must be an array of length 2'));

	return (Math.pow(2, 32) * val[0] + val[1]);
}

function parseCTF(json, conf)
{
	var ctype = new CTypeParser(conf);
	mod_ctf.ctfParseJson(json, ctype);

	return (ctype);
}

/*
 * Export the few things we actually want to. Currently this is just the CType
 * Parser and ctio.
 */
exports.Parser = CTypeParser;
exports.toAbs64 = toAbs64;
exports.toApprox64 = toApprox64;

exports.parseCTF = parseCTF;

exports.ruint8 = mod_ctio.ruint8;
exports.ruint16 = mod_ctio.ruint16;
exports.ruint32 = mod_ctio.ruint32;
exports.ruint64 = mod_ctio.ruint64;
exports.wuint8 = mod_ctio.wuint8;
exports.wuint16 = mod_ctio.wuint16;
exports.wuint32 = mod_ctio.wuint32;
exports.wuint64 = mod_ctio.wuint64;

exports.rsint8 = mod_ctio.rsint8;
exports.rsint16 = mod_ctio.rsint16;
exports.rsint32 = mod_ctio.rsint32;
exports.rsint64 = mod_ctio.rsint64;
exports.wsint8 = mod_ctio.wsint8;
exports.wsint16 = mod_ctio.wsint16;
exports.wsint32 = mod_ctio.wsint32;
exports.wsint64 = mod_ctio.wsint64;

exports.rfloat = mod_ctio.rfloat;
exports.rdouble = mod_ctio.rdouble;
exports.wfloat = mod_ctio.wfloat;
exports.wdouble = mod_ctio.wdouble;

}).call(this,require("buffer").Buffer)
},{"./ctf.js":117,"./ctio.js":118,"assert":162,"buffer":177}],120:[function(require,module,exports){
var stream = require('stream')


function isStream (obj) {
  return obj instanceof stream.Stream
}


function isReadable (obj) {
  return isStream(obj) && typeof obj._read == 'function' && typeof obj._readableState == 'object'
}


function isWritable (obj) {
  return isStream(obj) && typeof obj._write == 'function' && typeof obj._writableState == 'object'
}


function isDuplex (obj) {
  return isReadable(obj) && isWritable(obj)
}


module.exports            = isStream
module.exports.isReadable = isReadable
module.exports.isWritable = isWritable
module.exports.isDuplex   = isDuplex

},{"stream":399}],121:[function(require,module,exports){
module.exports = stringify;

function getSerialize (fn, decycle) {
  var seen = [], keys = [];
  decycle = decycle || function(key, value) {
    return '[Circular ' + getPath(value, seen, keys) + ']'
  };
  return function(key, value) {
    var ret = value;
    if (typeof value === 'object' && value) {
      if (seen.indexOf(value) !== -1)
        ret = decycle(key, value);
      else {
        seen.push(value);
        keys.push(key);
      }
    }
    if (fn) ret = fn(key, ret);
    return ret;
  }
}

function getPath (value, seen, keys) {
  var index = seen.indexOf(value);
  var path = [ keys[index] ];
  for (index--; index >= 0; index--) {
    if (seen[index][ path[0] ] === value) {
      value = seen[index];
      path.unshift(keys[index]);
    }
  }
  return '~' + path.join('.');
}

function stringify(obj, fn, spaces, decycle) {
  return JSON.stringify(obj, getSerialize(fn, decycle), spaces);
}

stringify.getSerialize = getSerialize;

},{}],122:[function(require,module,exports){

var db = require('mime-db')

// types[extension] = type
exports.types = Object.create(null)
// extensions[type] = [extensions]
exports.extensions = Object.create(null)

Object.keys(db).forEach(function (name) {
  var mime = db[name]
  var exts = mime.extensions
  if (!exts || !exts.length) return
  exports.extensions[name] = exts
  exts.forEach(function (ext) {
    exports.types[ext] = name
  })
})

exports.lookup = function (string) {
  if (!string || typeof string !== "string") return false
  // remove any leading paths, though we should just use path.basename
  string = string.replace(/.*[\.\/\\]/, '').toLowerCase()
  if (!string) return false
  return exports.types[string] || false
}

exports.extension = function (type) {
  if (!type || typeof type !== "string") return false
  // to do: use media-typer
  type = type.match(/^\s*([^;\s]*)(?:;|\s|$)/)
  if (!type) return false
  var exts = exports.extensions[type[1].toLowerCase()]
  if (!exts || !exts.length) return false
  return exts[0]
}

// type has to be an exact mime type
exports.charset = function (type) {
  var mime = db[type]
  if (mime && mime.charset) return mime.charset

  // default text/* to utf-8
  if (/^text\//.test(type)) return 'UTF-8'

  return false
}

// backwards compatibility
exports.charsets = {
  lookup: exports.charset
}

// to do: maybe use set-type module or something
exports.contentType = function (type) {
  if (!type || typeof type !== "string") return false
  if (!~type.indexOf('/')) type = exports.lookup(type)
  if (!type) return false
  if (!~type.indexOf('charset')) {
    var charset = exports.charset(type)
    if (charset) type += '; charset=' + charset.toLowerCase()
  }
  return type
}

},{"mime-db":124}],123:[function(require,module,exports){
module.exports={
  "application/1d-interleaved-parityfec": {
    "source": "iana"
  },
  "application/3gpdash-qoe-report+xml": {
    "source": "iana"
  },
  "application/3gpp-ims+xml": {
    "source": "iana"
  },
  "application/a2l": {
    "source": "iana"
  },
  "application/activemessage": {
    "source": "iana"
  },
  "application/alto-costmap+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-costmapfilter+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-directory+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-endpointcost+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-endpointcostparams+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-endpointprop+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-endpointpropparams+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-error+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-networkmap+json": {
    "source": "iana",
    "compressible": true
  },
  "application/alto-networkmapfilter+json": {
    "source": "iana",
    "compressible": true
  },
  "application/aml": {
    "source": "iana"
  },
  "application/andrew-inset": {
    "source": "iana",
    "extensions": ["ez"]
  },
  "application/applefile": {
    "source": "iana"
  },
  "application/applixware": {
    "source": "apache",
    "extensions": ["aw"]
  },
  "application/atf": {
    "source": "iana"
  },
  "application/atfx": {
    "source": "iana"
  },
  "application/atom+xml": {
    "source": "iana",
    "compressible": true,
    "extensions": ["atom"]
  },
  "application/atomcat+xml": {
    "source": "iana",
    "extensions": ["atomcat"]
  },
  "application/atomdeleted+xml": {
    "source": "iana"
  },
  "application/atomicmail": {
    "source": "iana"
  },
  "application/atomsvc+xml": {
    "source": "iana",
    "extensions": ["atomsvc"]
  },
  "application/atxml": {
    "source": "iana"
  },
  "application/auth-policy+xml": {
    "source": "iana"
  },
  "application/bacnet-xdd+zip": {
    "source": "iana"
  },
  "application/batch-smtp": {
    "source": "iana"
  },
  "application/beep+xml": {
    "source": "iana"
  },
  "application/calendar+json": {
    "source": "iana",
    "compressible": true
  },
  "application/calendar+xml": {
    "source": "iana"
  },
  "application/call-completion": {
    "source": "iana"
  },
  "application/cals-1840": {
    "source": "iana"
  },
  "application/cbor": {
    "source": "iana"
  },
  "application/ccmp+xml": {
    "source": "iana"
  },
  "application/ccxml+xml": {
    "source": "iana",
    "extensions": ["ccxml"]
  },
  "application/cdfx+xml": {
    "source": "iana"
  },
  "application/cdmi-capability": {
    "source": "iana",
    "extensions": ["cdmia"]
  },
  "application/cdmi-container": {
    "source": "iana",
    "extensions": ["cdmic"]
  },
  "application/cdmi-domain": {
    "source": "iana",
    "extensions": ["cdmid"]
  },
  "application/cdmi-object": {
    "source": "iana",
    "extensions": ["cdmio"]
  },
  "application/cdmi-queue": {
    "source": "iana",
    "extensions": ["cdmiq"]
  },
  "application/cea": {
    "source": "iana"
  },
  "application/cea-2018+xml": {
    "source": "iana"
  },
  "application/cellml+xml": {
    "source": "iana"
  },
  "application/cfw": {
    "source": "iana"
  },
  "application/cms": {
    "source": "iana"
  },
  "application/cnrp+xml": {
    "source": "iana"
  },
  "application/coap-group+json": {
    "source": "iana",
    "compressible": true
  },
  "application/commonground": {
    "source": "iana"
  },
  "application/conference-info+xml": {
    "source": "iana"
  },
  "application/cpl+xml": {
    "source": "iana"
  },
  "application/csrattrs": {
    "source": "iana"
  },
  "application/csta+xml": {
    "source": "iana"
  },
  "application/cstadata+xml": {
    "source": "iana"
  },
  "application/cu-seeme": {
    "source": "apache",
    "extensions": ["cu"]
  },
  "application/cybercash": {
    "source": "iana"
  },
  "application/dart": {
    "compressible": true
  },
  "application/dash+xml": {
    "source": "iana",
    "extensions": ["mdp"]
  },
  "application/dashdelta": {
    "source": "iana"
  },
  "application/davmount+xml": {
    "source": "iana",
    "extensions": ["davmount"]
  },
  "application/dca-rft": {
    "source": "iana"
  },
  "application/dcd": {
    "source": "iana"
  },
  "application/dec-dx": {
    "source": "iana"
  },
  "application/dialog-info+xml": {
    "source": "iana"
  },
  "application/dicom": {
    "source": "iana"
  },
  "application/dii": {
    "source": "iana"
  },
  "application/dit": {
    "source": "iana"
  },
  "application/dns": {
    "source": "iana"
  },
  "application/docbook+xml": {
    "source": "apache",
    "extensions": ["dbk"]
  },
  "application/dskpp+xml": {
    "source": "iana"
  },
  "application/dssc+der": {
    "source": "iana",
    "extensions": ["dssc"]
  },
  "application/dssc+xml": {
    "source": "iana",
    "extensions": ["xdssc"]
  },
  "application/dvcs": {
    "source": "iana"
  },
  "application/ecmascript": {
    "source": "iana",
    "compressible": true,
    "extensions": ["ecma"]
  },
  "application/edi-consent": {
    "source": "iana"
  },
  "application/edi-x12": {
    "source": "iana",
    "compressible": false
  },
  "application/edifact": {
    "source": "iana",
    "compressible": false
  },
  "application/emma+xml": {
    "source": "iana",
    "extensions": ["emma"]
  },
  "application/emotionml+xml": {
    "source": "iana"
  },
  "application/encaprtp": {
    "source": "iana"
  },
  "application/epp+xml": {
    "source": "iana"
  },
  "application/epub+zip": {
    "source": "iana",
    "extensions": ["epub"]
  },
  "application/eshop": {
    "source": "iana"
  },
  "application/exi": {
    "source": "iana",
    "extensions": ["exi"]
  },
  "application/fastinfoset": {
    "source": "iana"
  },
  "application/fastsoap": {
    "source": "iana"
  },
  "application/fdt+xml": {
    "source": "iana"
  },
  "application/fits": {
    "source": "iana"
  },
  "application/font-sfnt": {
    "source": "iana"
  },
  "application/font-tdpfr": {
    "source": "iana",
    "extensions": ["pfr"]
  },
  "application/font-woff": {
    "source": "iana",
    "compressible": false,
    "extensions": ["woff"]
  },
  "application/font-woff2": {
    "compressible": false,
    "extensions": ["woff2"]
  },
  "application/framework-attributes+xml": {
    "source": "iana"
  },
  "application/gml+xml": {
    "source": "apache",
    "extensions": ["gml"]
  },
  "application/gpx+xml": {
    "source": "apache",
    "extensions": ["gpx"]
  },
  "application/gxf": {
    "source": "apache",
    "extensions": ["gxf"]
  },
  "application/gzip": {
    "source": "iana",
    "compressible": false
  },
  "application/h224": {
    "source": "iana"
  },
  "application/held+xml": {
    "source": "iana"
  },
  "application/http": {
    "source": "iana"
  },
  "application/hyperstudio": {
    "source": "iana",
    "extensions": ["stk"]
  },
  "application/ibe-key-request+xml": {
    "source": "iana"
  },
  "application/ibe-pkg-reply+xml": {
    "source": "iana"
  },
  "application/ibe-pp-data": {
    "source": "iana"
  },
  "application/iges": {
    "source": "iana"
  },
  "application/im-iscomposing+xml": {
    "source": "iana"
  },
  "application/index": {
    "source": "iana"
  },
  "application/index.cmd": {
    "source": "iana"
  },
  "application/index.obj": {
    "source": "iana"
  },
  "application/index.response": {
    "source": "iana"
  },
  "application/index.vnd": {
    "source": "iana"
  },
  "application/inkml+xml": {
    "source": "iana",
    "extensions": ["ink","inkml"]
  },
  "application/iotp": {
    "source": "iana"
  },
  "application/ipfix": {
    "source": "iana",
    "extensions": ["ipfix"]
  },
  "application/ipp": {
    "source": "iana"
  },
  "application/isup": {
    "source": "iana"
  },
  "application/its+xml": {
    "source": "iana"
  },
  "application/java-archive": {
    "source": "apache",
    "compressible": false,
    "extensions": ["jar"]
  },
  "application/java-serialized-object": {
    "source": "apache",
    "compressible": false,
    "extensions": ["ser"]
  },
  "application/java-vm": {
    "source": "apache",
    "compressible": false,
    "extensions": ["class"]
  },
  "application/javascript": {
    "source": "iana",
    "charset": "UTF-8",
    "compressible": true,
    "extensions": ["js"]
  },
  "application/jose": {
    "source": "iana"
  },
  "application/jose+json": {
    "source": "iana",
    "compressible": true
  },
  "application/jrd+json": {
    "source": "iana",
    "compressible": true
  },
  "application/json": {
    "source": "iana",
    "charset": "UTF-8",
    "compressible": true,
    "extensions": ["json","map"]
  },
  "application/json-patch+json": {
    "source": "iana",
    "compressible": true
  },
  "application/json-seq": {
    "source": "iana"
  },
  "application/json5": {
    "extensions": ["json5"]
  },
  "application/jsonml+json": {
    "source": "apache",
    "compressible": true,
    "extensions": ["jsonml"]
  },
  "application/jwk+json": {
    "source": "iana",
    "compressible": true
  },
  "application/jwk-set+json": {
    "source": "iana",
    "compressible": true
  },
  "application/jwt": {
    "source": "iana"
  },
  "application/kpml-request+xml": {
    "source": "iana"
  },
  "application/kpml-response+xml": {
    "source": "iana"
  },
  "application/ld+json": {
    "source": "iana",
    "compressible": true,
    "extensions": ["jsonld"]
  },
  "application/link-format": {
    "source": "iana"
  },
  "application/load-control+xml": {
    "source": "iana"
  },
  "application/lost+xml": {
    "source": "iana",
    "extensions": ["lostxml"]
  },
  "application/lostsync+xml": {
    "source": "iana"
  },
  "application/lxf": {
    "source": "iana"
  },
  "application/mac-binhex40": {
    "source": "iana",
    "extensions": ["hqx"]
  },
  "application/mac-compactpro": {
    "source": "apache",
    "extensions": ["cpt"]
  },
  "application/macwriteii": {
    "source": "iana"
  },
  "application/mads+xml": {
    "source": "iana",
    "extensions": ["mads"]
  },
  "application/marc": {
    "source": "iana",
    "extensions": ["mrc"]
  },
  "application/marcxml+xml": {
    "source": "iana",
    "extensions": ["mrcx"]
  },
  "application/mathematica": {
    "source": "iana",
    "extensions": ["ma","nb","mb"]
  },
  "application/mathml+xml": {
    "source": "iana",
    "extensions": ["mathml"]
  },
  "application/mathml-content+xml": {
    "source": "iana"
  },
  "application/mathml-presentation+xml": {
    "source": "iana"
  },
  "application/mbms-associated-procedure-description+xml": {
    "source": "iana"
  },
  "application/mbms-deregister+xml": {
    "source": "iana"
  },
  "application/mbms-envelope+xml": {
    "source": "iana"
  },
  "application/mbms-msk+xml": {
    "source": "iana"
  },
  "application/mbms-msk-response+xml": {
    "source": "iana"
  },
  "application/mbms-protection-description+xml": {
    "source": "iana"
  },
  "application/mbms-reception-report+xml": {
    "source": "iana"
  },
  "application/mbms-register+xml": {
    "source": "iana"
  },
  "application/mbms-register-response+xml": {
    "source": "iana"
  },
  "application/mbms-schedule+xml": {
    "source": "iana"
  },
  "application/mbms-user-service-description+xml": {
    "source": "iana"
  },
  "application/mbox": {
    "source": "iana",
    "extensions": ["mbox"]
  },
  "application/media-policy-dataset+xml": {
    "source": "iana"
  },
  "application/media_control+xml": {
    "source": "iana"
  },
  "application/mediaservercontrol+xml": {
    "source": "iana",
    "extensions": ["mscml"]
  },
  "application/merge-patch+json": {
    "source": "iana",
    "compressible": true
  },
  "application/metalink+xml": {
    "source": "apache",
    "extensions": ["metalink"]
  },
  "application/metalink4+xml": {
    "source": "iana",
    "extensions": ["meta4"]
  },
  "application/mets+xml": {
    "source": "iana",
    "extensions": ["mets"]
  },
  "application/mf4": {
    "source": "iana"
  },
  "application/mikey": {
    "source": "iana"
  },
  "application/mods+xml": {
    "source": "iana",
    "extensions": ["mods"]
  },
  "application/moss-keys": {
    "source": "iana"
  },
  "application/moss-signature": {
    "source": "iana"
  },
  "application/mosskey-data": {
    "source": "iana"
  },
  "application/mosskey-request": {
    "source": "iana"
  },
  "application/mp21": {
    "source": "iana",
    "extensions": ["m21","mp21"]
  },
  "application/mp4": {
    "source": "iana",
    "extensions": ["mp4s","m4p"]
  },
  "application/mpeg4-generic": {
    "source": "iana"
  },
  "application/mpeg4-iod": {
    "source": "iana"
  },
  "application/mpeg4-iod-xmt": {
    "source": "iana"
  },
  "application/mrb-consumer+xml": {
    "source": "iana"
  },
  "application/mrb-publish+xml": {
    "source": "iana"
  },
  "application/msc-ivr+xml": {
    "source": "iana"
  },
  "application/msc-mixer+xml": {
    "source": "iana"
  },
  "application/msword": {
    "source": "iana",
    "compressible": false,
    "extensions": ["doc","dot"]
  },
  "application/mxf": {
    "source": "iana",
    "extensions": ["mxf"]
  },
  "application/nasdata": {
    "source": "iana"
  },
  "application/news-checkgroups": {
    "source": "iana"
  },
  "application/news-groupinfo": {
    "source": "iana"
  },
  "application/news-transmission": {
    "source": "iana"
  },
  "application/nlsml+xml": {
    "source": "iana"
  },
  "application/nss": {
    "source": "iana"
  },
  "application/ocsp-request": {
    "source": "iana"
  },
  "application/ocsp-response": {
    "source": "iana"
  },
  "application/octet-stream": {
    "source": "iana",
    "compressible": false,
    "extensions": ["bin","dms","lrf","mar","so","dist","distz","pkg","bpk","dump","elc","deploy","buffer"]
  },
  "application/oda": {
    "source": "iana",
    "extensions": ["oda"]
  },
  "application/odx": {
    "source": "iana"
  },
  "application/oebps-package+xml": {
    "source": "iana",
    "extensions": ["opf"]
  },
  "application/ogg": {
    "source": "iana",
    "compressible": false,
    "extensions": ["ogx"]
  },
  "application/omdoc+xml": {
    "source": "apache",
    "extensions": ["omdoc"]
  },
  "application/onenote": {
    "source": "apache",
    "extensions": ["onetoc","onetoc2","onetmp","onepkg"]
  },
  "application/oxps": {
    "source": "iana",
    "extensions": ["oxps"]
  },
  "application/p2p-overlay+xml": {
    "source": "iana"
  },
  "application/parityfec": {
    "source": "iana"
  },
  "application/patch-ops-error+xml": {
    "source": "iana",
    "extensions": ["xer"]
  },
  "application/pdf": {
    "source": "iana",
    "compressible": false,
    "extensions": ["pdf"]
  },
  "application/pdx": {
    "source": "iana"
  },
  "application/pgp-encrypted": {
    "source": "iana",
    "compressible": false,
    "extensions": ["pgp"]
  },
  "application/pgp-keys": {
    "source": "iana"
  },
  "application/pgp-signature": {
    "source": "iana",
    "extensions": ["asc","sig"]
  },
  "application/pics-rules": {
    "source": "apache",
    "extensions": ["prf"]
  },
  "application/pidf+xml": {
    "source": "iana"
  },
  "application/pidf-diff+xml": {
    "source": "iana"
  },
  "application/pkcs10": {
    "source": "iana",
    "extensions": ["p10"]
  },
  "application/pkcs7-mime": {
    "source": "iana",
    "extensions": ["p7m","p7c"]
  },
  "application/pkcs7-signature": {
    "source": "iana",
    "extensions": ["p7s"]
  },
  "application/pkcs8": {
    "source": "iana",
    "extensions": ["p8"]
  },
  "application/pkix-attr-cert": {
    "source": "iana",
    "extensions": ["ac"]
  },
  "application/pkix-cert": {
    "source": "iana",
    "extensions": ["cer"]
  },
  "application/pkix-crl": {
    "source": "iana",
    "extensions": ["crl"]
  },
  "application/pkix-pkipath": {
    "source": "iana",
    "extensions": ["pkipath"]
  },
  "application/pkixcmp": {
    "source": "iana",
    "extensions": ["pki"]
  },
  "application/pls+xml": {
    "source": "iana",
    "extensions": ["pls"]
  },
  "application/poc-settings+xml": {
    "source": "iana"
  },
  "application/postscript": {
    "source": "iana",
    "compressible": true,
    "extensions": ["ai","eps","ps"]
  },
  "application/provenance+xml": {
    "source": "iana"
  },
  "application/prs.alvestrand.titrax-sheet": {
    "source": "iana"
  },
  "application/prs.cww": {
    "source": "iana",
    "extensions": ["cww"]
  },
  "application/prs.hpub+zip": {
    "source": "iana"
  },
  "application/prs.nprend": {
    "source": "iana"
  },
  "application/prs.plucker": {
    "source": "iana"
  },
  "application/prs.rdf-xml-crypt": {
    "source": "iana"
  },
  "application/prs.xsf+xml": {
    "source": "iana"
  },
  "application/pskc+xml": {
    "source": "iana",
    "extensions": ["pskcxml"]
  },
  "application/qsig": {
    "source": "iana"
  },
  "application/raptorfec": {
    "source": "iana"
  },
  "application/rdap+json": {
    "source": "iana",
    "compressible": true
  },
  "application/rdf+xml": {
    "source": "iana",
    "compressible": true,
    "extensions": ["rdf"]
  },
  "application/reginfo+xml": {
    "source": "iana",
    "extensions": ["rif"]
  },
  "application/relax-ng-compact-syntax": {
    "source": "iana",
    "extensions": ["rnc"]
  },
  "application/remote-printing": {
    "source": "iana"
  },
  "application/reputon+json": {
    "source": "iana",
    "compressible": true
  },
  "application/resource-lists+xml": {
    "source": "iana",
    "extensions": ["rl"]
  },
  "application/resource-lists-diff+xml": {
    "source": "iana",
    "extensions": ["rld"]
  },
  "application/riscos": {
    "source": "iana"
  },
  "application/rlmi+xml": {
    "source": "iana"
  },
  "application/rls-services+xml": {
    "source": "iana",
    "extensions": ["rs"]
  },
  "application/rpki-ghostbusters": {
    "source": "iana",
    "extensions": ["gbr"]
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    "source": "iana",
    "extensions": ["mft"]
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    "extensions": ["roa"]
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  "application/rpki-updown": {
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    "extensions": ["rss"]
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    "source": "iana"
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    "source": "iana",
    "extensions": ["sbml"]
  },
  "application/scaip+xml": {
    "source": "iana"
  },
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    "source": "iana",
    "extensions": ["scq"]
  },
  "application/scvp-cv-response": {
    "source": "iana",
    "extensions": ["scs"]
  },
  "application/scvp-vp-request": {
    "source": "iana",
    "extensions": ["spq"]
  },
  "application/scvp-vp-response": {
    "source": "iana",
    "extensions": ["spp"]
  },
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    "source": "iana",
    "extensions": ["sdp"]
  },
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    "source": "iana"
  },
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana",
    "extensions": ["setpay"]
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  "application/set-registration": {
    "source": "iana"
  },
  "application/set-registration-initiation": {
    "source": "iana",
    "extensions": ["setreg"]
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    "source": "iana"
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    "source": "iana"
  },
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    "source": "iana",
    "extensions": ["shf"]
  },
  "application/sieve": {
    "source": "iana"
  },
  "application/simple-filter+xml": {
    "source": "iana"
  },
  "application/simple-message-summary": {
    "source": "iana"
  },
  "application/simplesymbolcontainer": {
    "source": "iana"
  },
  "application/slate": {
    "source": "iana"
  },
  "application/smil": {
    "source": "iana"
  },
  "application/smil+xml": {
    "source": "iana",
    "extensions": ["smi","smil"]
  },
  "application/smpte336m": {
    "source": "iana"
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    "source": "iana"
  },
  "application/soap+xml": {
    "source": "iana",
    "compressible": true
  },
  "application/sparql-query": {
    "source": "iana",
    "extensions": ["rq"]
  },
  "application/sparql-results+xml": {
    "source": "iana",
    "extensions": ["srx"]
  },
  "application/spirits-event+xml": {
    "source": "iana"
  },
  "application/sql": {
    "source": "iana"
  },
  "application/srgs": {
    "source": "iana",
    "extensions": ["gram"]
  },
  "application/srgs+xml": {
    "source": "iana",
    "extensions": ["grxml"]
  },
  "application/sru+xml": {
    "source": "iana",
    "extensions": ["sru"]
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    "extensions": ["ssdl"]
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    "source": "iana",
    "extensions": ["ssml"]
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  "application/tamp-apex-update": {
    "source": "iana"
  },
  "application/tamp-apex-update-confirm": {
    "source": "iana"
  },
  "application/tamp-community-update": {
    "source": "iana"
  },
  "application/tamp-community-update-confirm": {
    "source": "iana"
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  "application/tamp-error": {
    "source": "iana"
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  "application/tamp-sequence-adjust": {
    "source": "iana"
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  "application/tamp-sequence-adjust-confirm": {
    "source": "iana"
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  "application/tamp-status-query": {
    "source": "iana"
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  "application/tamp-status-response": {
    "source": "iana"
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  "application/tamp-update": {
    "source": "iana"
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  "application/tamp-update-confirm": {
    "source": "iana"
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    "source": "iana",
    "extensions": ["tei","teicorpus"]
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    "source": "iana",
    "extensions": ["tfi"]
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  "application/timestamp-query": {
    "source": "iana"
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  "application/timestamp-reply": {
    "source": "iana"
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  "application/timestamped-data": {
    "source": "iana",
    "extensions": ["tsd"]
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    "source": "iana"
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  "application/tve-trigger": {
    "source": "iana"
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    "source": "iana"
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    "source": "iana"
  },
  "application/urc-ressheet+xml": {
    "source": "iana"
  },
  "application/urc-targetdesc+xml": {
    "source": "iana"
  },
  "application/urc-uisocketdesc+xml": {
    "source": "iana"
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    "compressible": true
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  "application/vcard+xml": {
    "source": "iana"
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    "extensions": ["plb"]
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    "extensions": ["psb"]
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    "extensions": ["pvb"]
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    "source": "iana"
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    "source": "iana"
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  "application/vnd.3gpp2.sms": {
    "source": "iana"
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    "source": "iana",
    "extensions": ["tcap"]
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    "source": "iana",
    "extensions": ["pwn"]
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    "source": "iana",
    "extensions": ["aso"]
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    "source": "iana",
    "extensions": ["imp"]
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    "source": "iana",
    "extensions": ["acu"]
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    "source": "iana",
    "extensions": ["atc","acutc"]
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    "extensions": ["air"]
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    "source": "iana",
    "extensions": ["fcdt"]
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    "source": "iana",
    "extensions": ["fxp","fxpl"]
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    "source": "iana"
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    "source": "iana",
    "extensions": ["xdp"]
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    "source": "iana",
    "extensions": ["xfdf"]
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    "source": "iana"
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    "source": "iana"
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    "source": "iana",
    "extensions": ["ahead"]
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    "source": "iana",
    "extensions": ["azf"]
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    "source": "iana",
    "extensions": ["azs"]
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    "extensions": ["azw"]
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    "extensions": ["acc"]
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    "extensions": ["ami"]
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    "compressible": false,
    "extensions": ["apk"]
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    "extensions": ["cii"]
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    "extensions": ["fti"]
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    "extensions": ["atx"]
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    "compressible": true
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    "source": "iana",
    "extensions": ["mpkg"]
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    "source": "iana",
    "extensions": ["m3u8"]
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    "source": "iana"
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  "application/vnd.aristanetworks.swi": {
    "source": "iana",
    "extensions": ["swi"]
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    "source": "iana"
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  "application/vnd.astraea-software.iota": {
    "source": "iana",
    "extensions": ["iota"]
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    "source": "iana",
    "extensions": ["aep"]
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  "application/vnd.autopackage": {
    "source": "iana"
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  "application/vnd.avistar+xml": {
    "source": "iana"
  },
  "application/vnd.balsamiq.bmml+xml": {
    "source": "iana"
  },
  "application/vnd.bekitzur-stech+json": {
    "source": "iana",
    "compressible": true
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  "application/vnd.blueice.multipass": {
    "source": "iana",
    "extensions": ["mpm"]
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    "source": "iana"
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  "application/vnd.bluetooth.le.oob": {
    "source": "iana"
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    "source": "iana",
    "extensions": ["bmi"]
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    "source": "iana",
    "extensions": ["rep"]
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana",
    "extensions": ["cdxml"]
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    "source": "iana",
    "extensions": ["mmd"]
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    "source": "iana",
    "extensions": ["cdy"]
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    "source": "iana"
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    "source": "iana"
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    "extensions": ["cla"]
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    "source": "iana",
    "extensions": ["rp9"]
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    "source": "iana",
    "extensions": ["c4g","c4d","c4f","c4p","c4u"]
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    "source": "iana",
    "extensions": ["c11amc"]
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    "source": "iana",
    "extensions": ["c11amz"]
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    "compressible": true
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    "source": "iana",
    "compressible": true
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    "compressible": true
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    "extensions": ["csp"]
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    "source": "iana",
    "extensions": ["cdbcmsg"]
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    "source": "iana",
    "extensions": ["cmc"]
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    "source": "iana",
    "extensions": ["clkx"]
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    "source": "iana",
    "extensions": ["clkk"]
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    "source": "iana",
    "extensions": ["clkp"]
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    "source": "iana",
    "extensions": ["clkt"]
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    "source": "iana",
    "extensions": ["clkw"]
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    "source": "iana",
    "extensions": ["wbs"]
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    "source": "iana",
    "extensions": ["pml"]
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    "source": "iana"
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    "source": "iana"
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    "source": "iana",
    "extensions": ["ppd"]
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    "source": "iana"
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    "source": "iana"
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    "compressible": true,
    "extensions": ["dart"]
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    "extensions": ["uvf","uvvf","uvd","uvvd"]
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    "extensions": ["uvt","uvvt"]
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    "extensions": ["uvx","uvvx"]
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    "extensions": ["uvz","uvvz"]
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    "source": "iana",
    "extensions": ["fe_launch"]
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    "source": "iana"
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    "source": "iana"
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    "extensions": ["dna"]
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    "compressible": true
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    "extensions": ["dpg"]
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    "source": "iana",
    "extensions": ["dfac"]
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    "extensions": ["kpxx"]
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    "extensions": ["ait"]
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    "source": "iana"
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    "source": "iana"
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    "extensions": ["mag"]
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "iana"
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    "source": "apache"
  },
  "video/3gpp2": {
    "source": "apache",
    "extensions": ["3g2"]
  },
  "video/bmpeg": {
    "source": "apache"
  },
  "video/bt656": {
    "source": "apache"
  },
  "video/celb": {
    "source": "apache"
  },
  "video/dv": {
    "source": "apache"
  },
  "video/h261": {
    "source": "apache",
    "extensions": ["h261"]
  },
  "video/h263": {
    "source": "apache",
    "extensions": ["h263"]
  },
  "video/h263-1998": {
    "source": "apache"
  },
  "video/h263-2000": {
    "source": "apache"
  },
  "video/h264": {
    "source": "apache",
    "extensions": ["h264"]
  },
  "video/h264-rcdo": {
    "source": "apache"
  },
  "video/h264-svc": {
    "source": "apache"
  },
  "video/jpeg": {
    "source": "apache",
    "extensions": ["jpgv"]
  },
  "video/jpeg2000": {
    "source": "apache"
  },
  "video/jpm": {
    "source": "apache",
    "extensions": ["jpm","jpgm"]
  },
  "video/mj2": {
    "source": "apache",
    "extensions": ["mj2","mjp2"]
  },
  "video/mp1s": {
    "source": "apache"
  },
  "video/mp2p": {
    "source": "apache"
  },
  "video/mp2t": {
    "source": "apache",
    "extensions": ["ts"]
  },
  "video/mp4": {
    "source": "apache",
    "compressible": false,
    "extensions": ["mp4","mp4v","mpg4"]
  },
  "video/mp4v-es": {
    "source": "apache"
  },
  "video/mpeg": {
    "source": "apache",
    "compressible": false,
    "extensions": ["mpeg","mpg","mpe","m1v","m2v"]
  },
  "video/mpeg4-generic": {
    "source": "apache"
  },
  "video/mpv": {
    "source": "apache"
  },
  "video/nv": {
    "source": "apache"
  },
  "video/ogg": {
    "source": "apache",
    "compressible": false,
    "extensions": ["ogv"]
  },
  "video/parityfec": {
    "source": "apache"
  },
  "video/pointer": {
    "source": "apache"
  },
  "video/quicktime": {
    "source": "apache",
    "compressible": false,
    "extensions": ["qt","mov"]
  },
  "video/raw": {
    "source": "apache"
  },
  "video/rtp-enc-aescm128": {
    "source": "apache"
  },
  "video/rtx": {
    "source": "apache"
  },
  "video/smpte292m": {
    "source": "apache"
  },
  "video/ulpfec": {
    "source": "apache"
  },
  "video/vc1": {
    "source": "apache"
  },
  "video/vnd.cctv": {
    "source": "apache"
  },
  "video/vnd.dece.hd": {
    "source": "apache",
    "extensions": ["uvh","uvvh"]
  },
  "video/vnd.dece.mobile": {
    "source": "apache",
    "extensions": ["uvm","uvvm"]
  },
  "video/vnd.dece.mp4": {
    "source": "apache"
  },
  "video/vnd.dece.pd": {
    "source": "apache",
    "extensions": ["uvp","uvvp"]
  },
  "video/vnd.dece.sd": {
    "source": "apache",
    "extensions": ["uvs","uvvs"]
  },
  "video/vnd.dece.video": {
    "source": "apache",
    "extensions": ["uvv","uvvv"]
  },
  "video/vnd.directv.mpeg": {
    "source": "apache"
  },
  "video/vnd.directv.mpeg-tts": {
    "source": "apache"
  },
  "video/vnd.dlna.mpeg-tts": {
    "source": "apache"
  },
  "video/vnd.dvb.file": {
    "source": "apache",
    "extensions": ["dvb"]
  },
  "video/vnd.fvt": {
    "source": "apache",
    "extensions": ["fvt"]
  },
  "video/vnd.hns.video": {
    "source": "apache"
  },
  "video/vnd.iptvforum.1dparityfec-1010": {
    "source": "apache"
  },
  "video/vnd.iptvforum.1dparityfec-2005": {
    "source": "apache"
  },
  "video/vnd.iptvforum.2dparityfec-1010": {
    "source": "apache"
  },
  "video/vnd.iptvforum.2dparityfec-2005": {
    "source": "apache"
  },
  "video/vnd.iptvforum.ttsavc": {
    "source": "apache"
  },
  "video/vnd.iptvforum.ttsmpeg2": {
    "source": "apache"
  },
  "video/vnd.motorola.video": {
    "source": "apache"
  },
  "video/vnd.motorola.videop": {
    "source": "apache"
  },
  "video/vnd.mpegurl": {
    "source": "apache",
    "extensions": ["mxu","m4u"]
  },
  "video/vnd.ms-playready.media.pyv": {
    "source": "apache",
    "extensions": ["pyv"]
  },
  "video/vnd.nokia.interleaved-multimedia": {
    "source": "apache"
  },
  "video/vnd.nokia.videovoip": {
    "source": "apache"
  },
  "video/vnd.objectvideo": {
    "source": "apache"
  },
  "video/vnd.sealed.mpeg1": {
    "source": "apache"
  },
  "video/vnd.sealed.mpeg4": {
    "source": "apache"
  },
  "video/vnd.sealed.swf": {
    "source": "apache"
  },
  "video/vnd.sealedmedia.softseal.mov": {
    "source": "apache"
  },
  "video/vnd.uvvu.mp4": {
    "source": "apache",
    "extensions": ["uvu","uvvu"]
  },
  "video/vnd.vivo": {
    "source": "apache",
    "extensions": ["viv"]
  },
  "video/webm": {
    "source": "apache",
    "compressible": false,
    "extensions": ["webm"]
  },
  "video/x-f4v": {
    "source": "apache",
    "extensions": ["f4v"]
  },
  "video/x-fli": {
    "source": "apache",
    "extensions": ["fli"]
  },
  "video/x-flv": {
    "source": "apache",
    "compressible": false,
    "extensions": ["flv"]
  },
  "video/x-m4v": {
    "source": "apache",
    "extensions": ["m4v"]
  },
  "video/x-matroska": {
    "source": "apache",
    "compressible": false,
    "extensions": ["mkv","mk3d","mks"]
  },
  "video/x-mng": {
    "source": "apache",
    "extensions": ["mng"]
  },
  "video/x-ms-asf": {
    "source": "apache",
    "extensions": ["asf","asx"]
  },
  "video/x-ms-vob": {
    "source": "apache",
    "extensions": ["vob"]
  },
  "video/x-ms-wm": {
    "source": "apache",
    "extensions": ["wm"]
  },
  "video/x-ms-wmv": {
    "source": "apache",
    "compressible": false,
    "extensions": ["wmv"]
  },
  "video/x-ms-wmx": {
    "source": "apache",
    "extensions": ["wmx"]
  },
  "video/x-ms-wvx": {
    "source": "apache",
    "extensions": ["wvx"]
  },
  "video/x-msvideo": {
    "source": "apache",
    "extensions": ["avi"]
  },
  "video/x-sgi-movie": {
    "source": "apache",
    "extensions": ["movie"]
  },
  "video/x-smv": {
    "source": "apache",
    "extensions": ["smv"]
  },
  "x-conference/x-cooltalk": {
    "source": "apache",
    "extensions": ["ice"]
  },
  "x-shader/x-fragment": {
    "compressible": true
  },
  "x-shader/x-vertex": {
    "compressible": true
  }
}

},{}],124:[function(require,module,exports){
/*!
 * mime-db
 * Copyright(c) 2014 Jonathan Ong
 * MIT Licensed
 */

/**
 * Module exports.
 */

module.exports = require('./db.json')

},{"./db.json":123}],125:[function(require,module,exports){
//     uuid.js
//
//     Copyright (c) 2010-2012 Robert Kieffer
//     MIT License - http://opensource.org/licenses/mit-license.php

(function() {
  var _global = this;

  // Unique ID creation requires a high quality random # generator.  We feature
  // detect to determine the best RNG source, normalizing to a function that
  // returns 128-bits of randomness, since that's what's usually required
  var _rng;

  // Node.js crypto-based RNG - http://nodejs.org/docs/v0.6.2/api/crypto.html
  //
  // Moderately fast, high quality
  if (typeof(_global.require) == 'function') {
    try {
      var _rb = _global.require('crypto').randomBytes;
      _rng = _rb && function() {return _rb(16);};
    } catch(e) {}
  }

  if (!_rng && _global.crypto && crypto.getRandomValues) {
    // WHATWG crypto-based RNG - http://wiki.whatwg.org/wiki/Crypto
    //
    // Moderately fast, high quality
    var _rnds8 = new Uint8Array(16);
    _rng = function whatwgRNG() {
      crypto.getRandomValues(_rnds8);
      return _rnds8;
    };
  }

  if (!_rng) {
    // Math.random()-based (RNG)
    //
    // If all else fails, use Math.random().  It's fast, but is of unspecified
    // quality.
    var  _rnds = new Array(16);
    _rng = function() {
      for (var i = 0, r; i < 16; i++) {
        if ((i & 0x03) === 0) r = Math.random() * 0x100000000;
        _rnds[i] = r >>> ((i & 0x03) << 3) & 0xff;
      }

      return _rnds;
    };
  }

  // Buffer class to use
  var BufferClass = typeof(_global.Buffer) == 'function' ? _global.Buffer : Array;

  // Maps for number <-> hex string conversion
  var _byteToHex = [];
  var _hexToByte = {};
  for (var i = 0; i < 256; i++) {
    _byteToHex[i] = (i + 0x100).toString(16).substr(1);
    _hexToByte[_byteToHex[i]] = i;
  }

  // **`parse()` - Parse a UUID into it's component bytes**
  function parse(s, buf, offset) {
    var i = (buf && offset) || 0, ii = 0;

    buf = buf || [];
    s.toLowerCase().replace(/[0-9a-f]{2}/g, function(oct) {
      if (ii < 16) { // Don't overflow!
        buf[i + ii++] = _hexToByte[oct];
      }
    });

    // Zero out remaining bytes if string was short
    while (ii < 16) {
      buf[i + ii++] = 0;
    }

    return buf;
  }

  // **`unparse()` - Convert UUID byte array (ala parse()) into a string**
  function unparse(buf, offset) {
    var i = offset || 0, bth = _byteToHex;
    return  bth[buf[i++]] + bth[buf[i++]] +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] + '-' +
            bth[buf[i++]] + bth[buf[i++]] +
            bth[buf[i++]] + bth[buf[i++]] +
            bth[buf[i++]] + bth[buf[i++]];
  }

  // **`v1()` - Generate time-based UUID**
  //
  // Inspired by https://github.com/LiosK/UUID.js
  // and http://docs.python.org/library/uuid.html

  // random #'s we need to init node and clockseq
  var _seedBytes = _rng();

  // Per 4.5, create and 48-bit node id, (47 random bits + multicast bit = 1)
  var _nodeId = [
    _seedBytes[0] | 0x01,
    _seedBytes[1], _seedBytes[2], _seedBytes[3], _seedBytes[4], _seedBytes[5]
  ];

  // Per 4.2.2, randomize (14 bit) clockseq
  var _clockseq = (_seedBytes[6] << 8 | _seedBytes[7]) & 0x3fff;

  // Previous uuid creation time
  var _lastMSecs = 0, _lastNSecs = 0;

  // See https://github.com/broofa/node-uuid for API details
  function v1(options, buf, offset) {
    var i = buf && offset || 0;
    var b = buf || [];

    options = options || {};

    var clockseq = options.clockseq != null ? options.clockseq : _clockseq;

    // UUID timestamps are 100 nano-second units since the Gregorian epoch,
    // (1582-10-15 00:00).  JSNumbers aren't precise enough for this, so
    // time is handled internally as 'msecs' (integer milliseconds) and 'nsecs'
    // (100-nanoseconds offset from msecs) since unix epoch, 1970-01-01 00:00.
    var msecs = options.msecs != null ? options.msecs : new Date().getTime();

    // Per 4.2.1.2, use count of uuid's generated during the current clock
    // cycle to simulate higher resolution clock
    var nsecs = options.nsecs != null ? options.nsecs : _lastNSecs + 1;

    // Time since last uuid creation (in msecs)
    var dt = (msecs - _lastMSecs) + (nsecs - _lastNSecs)/10000;

    // Per 4.2.1.2, Bump clockseq on clock regression
    if (dt < 0 && options.clockseq == null) {
      clockseq = clockseq + 1 & 0x3fff;
    }

    // Reset nsecs if clock regresses (new clockseq) or we've moved onto a new
    // time interval
    if ((dt < 0 || msecs > _lastMSecs) && options.nsecs == null) {
      nsecs = 0;
    }

    // Per 4.2.1.2 Throw error if too many uuids are requested
    if (nsecs >= 10000) {
      throw new Error('uuid.v1(): Can\'t create more than 10M uuids/sec');
    }

    _lastMSecs = msecs;
    _lastNSecs = nsecs;
    _clockseq = clockseq;

    // Per 4.1.4 - Convert from unix epoch to Gregorian epoch
    msecs += 12219292800000;

    // `time_low`
    var tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
    b[i++] = tl >>> 24 & 0xff;
    b[i++] = tl >>> 16 & 0xff;
    b[i++] = tl >>> 8 & 0xff;
    b[i++] = tl & 0xff;

    // `time_mid`
    var tmh = (msecs / 0x100000000 * 10000) & 0xfffffff;
    b[i++] = tmh >>> 8 & 0xff;
    b[i++] = tmh & 0xff;

    // `time_high_and_version`
    b[i++] = tmh >>> 24 & 0xf | 0x10; // include version
    b[i++] = tmh >>> 16 & 0xff;

    // `clock_seq_hi_and_reserved` (Per 4.2.2 - include variant)
    b[i++] = clockseq >>> 8 | 0x80;

    // `clock_seq_low`
    b[i++] = clockseq & 0xff;

    // `node`
    var node = options.node || _nodeId;
    for (var n = 0; n < 6; n++) {
      b[i + n] = node[n];
    }

    return buf ? buf : unparse(b);
  }

  // **`v4()` - Generate random UUID**

  // See https://github.com/broofa/node-uuid for API details
  function v4(options, buf, offset) {
    // Deprecated - 'format' argument, as supported in v1.2
    var i = buf && offset || 0;

    if (typeof(options) == 'string') {
      buf = options == 'binary' ? new BufferClass(16) : null;
      options = null;
    }
    options = options || {};

    var rnds = options.random || (options.rng || _rng)();

    // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`
    rnds[6] = (rnds[6] & 0x0f) | 0x40;
    rnds[8] = (rnds[8] & 0x3f) | 0x80;

    // Copy bytes to buffer, if provided
    if (buf) {
      for (var ii = 0; ii < 16; ii++) {
        buf[i + ii] = rnds[ii];
      }
    }

    return buf || unparse(rnds);
  }

  // Export public API
  var uuid = v4;
  uuid.v1 = v1;
  uuid.v4 = v4;
  uuid.parse = parse;
  uuid.unparse = unparse;
  uuid.BufferClass = BufferClass;

  if (typeof(module) != 'undefined' && module.exports) {
    // Publish as node.js module
    module.exports = uuid;
  } else  if (typeof define === 'function' && define.amd) {
    // Publish as AMD module
    define(function() {return uuid;});
 

  } else {
    // Publish as global (in browsers)
    var _previousRoot = _global.uuid;

    // **`noConflict()` - (browser only) to reset global 'uuid' var**
    uuid.noConflict = function() {
      _global.uuid = _previousRoot;
      return uuid;
    };

    _global.uuid = uuid;
  }
}).call(this);

},{}],126:[function(require,module,exports){
var crypto = require('crypto')
  , qs = require('querystring')
  ;

function sha1 (key, body) {
  return crypto.createHmac('sha1', key).update(body).digest('base64')
}

function rsa (key, body) {
  return crypto.createSign("RSA-SHA1").update(body).sign(key, 'base64');
}

function rfc3986 (str) {
  return encodeURIComponent(str)
    .replace(/!/g,'%21')
    .replace(/\*/g,'%2A')
    .replace(/\(/g,'%28')
    .replace(/\)/g,'%29')
    .replace(/'/g,'%27')
    ;
}

// Maps object to bi-dimensional array
// Converts { foo: 'A', bar: [ 'b', 'B' ]} to
// [ ['foo', 'A'], ['bar', 'b'], ['bar', 'B'] ]
function map (obj) {
  var key, val, arr = []
  for (key in obj) {
    val = obj[key]
    if (Array.isArray(val))
      for (var i = 0; i < val.length; i++)
        arr.push([key, val[i]])
    else
      arr.push([key, val])
  }
  return arr
}

// Compare function for sort
function compare (a, b) {
  return a > b ? 1 : a < b ? -1 : 0
}

function generateBase (httpMethod, base_uri, params) {
  // adapted from https://dev.twitter.com/docs/auth/oauth and 
  // https://dev.twitter.com/docs/auth/creating-signature

  // Parameter normalization
  // http://tools.ietf.org/html/rfc5849#section-3.4.1.3.2
  var normalized = map(params)
  // 1.  First, the name and value of each parameter are encoded
  .map(function (p) {
    return [ rfc3986(p[0]), rfc3986(p[1] || '') ]
  })
  // 2.  The parameters are sorted by name, using ascending byte value
  //     ordering.  If two or more parameters share the same name, they
  //     are sorted by their value.
  .sort(function (a, b) {
    return compare(a[0], b[0]) || compare(a[1], b[1])
  })
  // 3.  The name of each parameter is concatenated to its corresponding
  //     value using an "=" character (ASCII code 61) as a separator, even
  //     if the value is empty.
  .map(function (p) { return p.join('=') })
   // 4.  The sorted name/value pairs are concatenated together into a
   //     single string by using an "&" character (ASCII code 38) as
   //     separator.
  .join('&')

  var base = [
    rfc3986(httpMethod ? httpMethod.toUpperCase() : 'GET'),
    rfc3986(base_uri),
    rfc3986(normalized)
  ].join('&')

  return base
}

function hmacsign (httpMethod, base_uri, params, consumer_secret, token_secret) {
  var base = generateBase(httpMethod, base_uri, params)
  var key = [
    consumer_secret || '',
    token_secret || ''
  ].map(rfc3986).join('&')

  return sha1(key, base)
}

function rsasign (httpMethod, base_uri, params, private_key, token_secret) {
  var base = generateBase(httpMethod, base_uri, params)
  var key = private_key || ''

  return rsa(key, base)
}

function plaintext (consumer_secret, token_secret) {
  var key = [
    consumer_secret || '',
    token_secret || ''
  ].map(rfc3986).join('&')

  return key
}

function sign (signMethod, httpMethod, base_uri, params, consumer_secret, token_secret) {
  var method
  var skipArgs = 1

  switch (signMethod) {
    case 'RSA-SHA1':
      method = rsasign
      break
    case 'HMAC-SHA1':
      method = hmacsign
      break
    case 'PLAINTEXT':
      method = plaintext
      skipArgs = 4
      break
    default:
     throw new Error("Signature method not supported: " + signMethod)
  }

  return method.apply(null, [].slice.call(arguments, skipArgs))
}

exports.hmacsign = hmacsign
exports.rsasign = rsasign
exports.plaintext = plaintext
exports.sign = sign
exports.rfc3986 = rfc3986

},{"crypto":183,"querystring":385}],127:[function(require,module,exports){
module.exports = require('./lib/');

},{"./lib/":128}],128:[function(require,module,exports){
// Load modules

var Stringify = require('./stringify');
var Parse = require('./parse');


// Declare internals

var internals = {};


module.exports = {
    stringify: Stringify,
    parse: Parse
};

},{"./parse":129,"./stringify":130}],129:[function(require,module,exports){
// Load modules

var Utils = require('./utils');


// Declare internals

var internals = {
    delimiter: '&',
    depth: 5,
    arrayLimit: 20,
    parameterLimit: 1000
};


internals.parseValues = function (str, options) {

    var obj = {};
    var parts = str.split(options.delimiter, options.parameterLimit === Infinity ? undefined : options.parameterLimit);

    for (var i = 0, il = parts.length; i < il; ++i) {
        var part = parts[i];
        var pos = part.indexOf(']=') === -1 ? part.indexOf('=') : part.indexOf(']=') + 1;

        if (pos === -1) {
            obj[Utils.decode(part)] = '';
        }
        else {
            var key = Utils.decode(part.slice(0, pos));
            var val = Utils.decode(part.slice(pos + 1));

            if (Object.prototype.hasOwnProperty(key)) {
                continue;
            }

            if (!obj.hasOwnProperty(key)) {
                obj[key] = val;
            }
            else {
                obj[key] = [].concat(obj[key]).concat(val);
            }
        }
    }

    return obj;
};


internals.parseObject = function (chain, val, options) {

    if (!chain.length) {
        return val;
    }

    var root = chain.shift();

    var obj = {};
    if (root === '[]') {
        obj = [];
        obj = obj.concat(internals.parseObject(chain, val, options));
    }
    else {
        var cleanRoot = root[0] === '[' && root[root.length - 1] === ']' ? root.slice(1, root.length - 1) : root;
        var index = parseInt(cleanRoot, 10);
        var indexString = '' + index;
        if (!isNaN(index) &&
            root !== cleanRoot &&
            indexString === cleanRoot &&
            index >= 0 &&
            index <= options.arrayLimit) {

            obj = [];
            obj[index] = internals.parseObject(chain, val, options);
        }
        else {
            obj[cleanRoot] = internals.parseObject(chain, val, options);
        }
    }

    return obj;
};


internals.parseKeys = function (key, val, options) {

    if (!key) {
        return;
    }

    // The regex chunks

    var parent = /^([^\[\]]*)/;
    var child = /(\[[^\[\]]*\])/g;

    // Get the parent

    var segment = parent.exec(key);

    // Don't allow them to overwrite object prototype properties

    if (Object.prototype.hasOwnProperty(segment[1])) {
        return;
    }

    // Stash the parent if it exists

    var keys = [];
    if (segment[1]) {
        keys.push(segment[1]);
    }

    // Loop through children appending to the array until we hit depth

    var i = 0;
    while ((segment = child.exec(key)) !== null && i < options.depth) {

        ++i;
        if (!Object.prototype.hasOwnProperty(segment[1].replace(/\[|\]/g, ''))) {
            keys.push(segment[1]);
        }
    }

    // If there's a remainder, just add whatever is left

    if (segment) {
        keys.push('[' + key.slice(segment.index) + ']');
    }

    return internals.parseObject(keys, val, options);
};


module.exports = function (str, options) {

    if (str === '' ||
        str === null ||
        typeof str === 'undefined') {

        return {};
    }

    options = options || {};
    options.delimiter = typeof options.delimiter === 'string' || Utils.isRegExp(options.delimiter) ? options.delimiter : internals.delimiter;
    options.depth = typeof options.depth === 'number' ? options.depth : internals.depth;
    options.arrayLimit = typeof options.arrayLimit === 'number' ? options.arrayLimit : internals.arrayLimit;
    options.parameterLimit = typeof options.parameterLimit === 'number' ? options.parameterLimit : internals.parameterLimit;

    var tempObj = typeof str === 'string' ? internals.parseValues(str, options) : str;
    var obj = {};

    // Iterate over the keys and setup the new object

    var keys = Object.keys(tempObj);
    for (var i = 0, il = keys.length; i < il; ++i) {
        var key = keys[i];
        var newObj = internals.parseKeys(key, tempObj[key], options);
        obj = Utils.merge(obj, newObj);
    }

    return Utils.compact(obj);
};

},{"./utils":131}],130:[function(require,module,exports){
// Load modules

var Utils = require('./utils');


// Declare internals

var internals = {
    delimiter: '&',
    arrayPrefixGenerators: {
        brackets: function (prefix, key) {
            return prefix + '[]';
        },
        indices: function (prefix, key) {
            return prefix + '[' + key + ']';
        },
        repeat: function (prefix, key) {
            return prefix;
        }
    }
};


internals.stringify = function (obj, prefix, generateArrayPrefix) {

    if (Utils.isBuffer(obj)) {
        obj = obj.toString();
    }
    else if (obj instanceof Date) {
        obj = obj.toISOString();
    }
    else if (obj === null) {
        obj = '';
    }

    if (typeof obj === 'string' ||
        typeof obj === 'number' ||
        typeof obj === 'boolean') {

        return [encodeURIComponent(prefix) + '=' + encodeURIComponent(obj)];
    }

    var values = [];

    if (typeof obj === 'undefined') {
        return values;
    }

    var objKeys = Object.keys(obj);
    for (var i = 0, il = objKeys.length; i < il; ++i) {
        var key = objKeys[i];
        if (Array.isArray(obj)) {
            values = values.concat(internals.stringify(obj[key], generateArrayPrefix(prefix, key), generateArrayPrefix));
        }
        else {
            values = values.concat(internals.stringify(obj[key], prefix + '[' + key + ']', generateArrayPrefix));
        }
    }

    return values;
};


module.exports = function (obj, options) {

    options = options || {};
    var delimiter = typeof options.delimiter === 'undefined' ? internals.delimiter : options.delimiter;

    var keys = [];

    if (typeof obj !== 'object' ||
        obj === null) {

        return '';
    }

    var arrayFormat;
    if (options.arrayFormat in internals.arrayPrefixGenerators) {
        arrayFormat = options.arrayFormat;
    }
    else if ('indices' in options) {
        arrayFormat = options.indices ? 'indices' : 'repeat';
    }
    else {
        arrayFormat = 'indices';
    }

    var generateArrayPrefix = internals.arrayPrefixGenerators[arrayFormat];

    var objKeys = Object.keys(obj);
    for (var i = 0, il = objKeys.length; i < il; ++i) {
        var key = objKeys[i];
        keys = keys.concat(internals.stringify(obj[key], key, generateArrayPrefix));
    }

    return keys.join(delimiter);
};

},{"./utils":131}],131:[function(require,module,exports){
// Load modules


// Declare internals

var internals = {};


exports.arrayToObject = function (source) {

    var obj = {};
    for (var i = 0, il = source.length; i < il; ++i) {
        if (typeof source[i] !== 'undefined') {

            obj[i] = source[i];
        }
    }

    return obj;
};


exports.merge = function (target, source) {

    if (!source) {
        return target;
    }

    if (typeof source !== 'object') {
        if (Array.isArray(target)) {
            target.push(source);
        }
        else {
            target[source] = true;
        }

        return target;
    }

    if (typeof target !== 'object') {
        target = [target].concat(source);
        return target;
    }

    if (Array.isArray(target) &&
        !Array.isArray(source)) {

        target = exports.arrayToObject(target);
    }

    var keys = Object.keys(source);
    for (var k = 0, kl = keys.length; k < kl; ++k) {
        var key = keys[k];
        var value = source[key];

        if (!target[key]) {
            target[key] = value;
        }
        else {
            target[key] = exports.merge(target[key], value);
        }
    }

    return target;
};


exports.decode = function (str) {

    try {
        return decodeURIComponent(str.replace(/\+/g, ' '));
    } catch (e) {
        return str;
    }
};


exports.compact = function (obj, refs) {

    if (typeof obj !== 'object' ||
        obj === null) {

        return obj;
    }

    refs = refs || [];
    var lookup = refs.indexOf(obj);
    if (lookup !== -1) {
        return refs[lookup];
    }

    refs.push(obj);

    if (Array.isArray(obj)) {
        var compacted = [];

        for (var i = 0, il = obj.length; i < il; ++i) {
            if (typeof obj[i] !== 'undefined') {
                compacted.push(obj[i]);
            }
        }

        return compacted;
    }

    var keys = Object.keys(obj);
    for (i = 0, il = keys.length; i < il; ++i) {
        var key = keys[i];
        obj[key] = exports.compact(obj[key], refs);
    }

    return obj;
};


exports.isRegExp = function (obj) {
    return Object.prototype.toString.call(obj) === '[object RegExp]';
};


exports.isBuffer = function (obj) {

    if (obj === null ||
        typeof obj === 'undefined') {

        return false;
    }

    return !!(obj.constructor &&
        obj.constructor.isBuffer &&
        obj.constructor.isBuffer(obj));
};

},{}],132:[function(require,module,exports){
(function (Buffer){
var util = require('util')
var Stream = require('stream')
var StringDecoder = require('string_decoder').StringDecoder

module.exports = StringStream
module.exports.AlignedStringDecoder = AlignedStringDecoder

function StringStream(from, to) {
  if (!(this instanceof StringStream)) return new StringStream(from, to)

  Stream.call(this)

  if (from == null) from = 'utf8'

  this.readable = this.writable = true
  this.paused = false
  this.toEncoding = (to == null ? from : to)
  this.fromEncoding = (to == null ? '' : from)
  this.decoder = new AlignedStringDecoder(this.toEncoding)
}
util.inherits(StringStream, Stream)

StringStream.prototype.write = function(data) {
  if (!this.writable) {
    var err = new Error('stream not writable')
    err.code = 'EPIPE'
    this.emit('error', err)
    return false
  }
  if (this.fromEncoding) {
    if (Buffer.isBuffer(data)) data = data.toString()
    data = new Buffer(data, this.fromEncoding)
  }
  var string = this.decoder.write(data)
  if (string.length) this.emit('data', string)
  return !this.paused
}

StringStream.prototype.flush = function() {
  if (this.decoder.flush) {
    var string = this.decoder.flush()
    if (string.length) this.emit('data', string)
  }
}

StringStream.prototype.end = function() {
  if (!this.writable && !this.readable) return
  this.flush()
  this.emit('end')
  this.writable = this.readable = false
  this.destroy()
}

StringStream.prototype.destroy = function() {
  this.decoder = null
  this.writable = this.readable = false
  this.emit('close')
}

StringStream.prototype.pause = function() {
  this.paused = true
}

StringStream.prototype.resume = function () {
  if (this.paused) this.emit('drain')
  this.paused = false
}

function AlignedStringDecoder(encoding) {
  StringDecoder.call(this, encoding)

  switch (this.encoding) {
    case 'base64':
      this.write = alignedWrite
      this.alignedBuffer = new Buffer(3)
      this.alignedBytes = 0
      break
  }
}
util.inherits(AlignedStringDecoder, StringDecoder)

AlignedStringDecoder.prototype.flush = function() {
  if (!this.alignedBuffer || !this.alignedBytes) return ''
  var leftover = this.alignedBuffer.toString(this.encoding, 0, this.alignedBytes)
  this.alignedBytes = 0
  return leftover
}

function alignedWrite(buffer) {
  var rem = (this.alignedBytes + buffer.length) % this.alignedBuffer.length
  if (!rem && !this.alignedBytes) return buffer.toString(this.encoding)

  var returnBuffer = new Buffer(this.alignedBytes + buffer.length - rem)

  this.alignedBuffer.copy(returnBuffer, 0, 0, this.alignedBytes)
  buffer.copy(returnBuffer, this.alignedBytes, 0, buffer.length - rem)

  buffer.copy(this.alignedBuffer, 0, buffer.length - rem, buffer.length)
  this.alignedBytes = rem

  return returnBuffer.toString(this.encoding)
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"stream":399,"string_decoder":406,"util":410}],133:[function(require,module,exports){
/*
 * Copyright GoInstant, Inc. and other contributors. All rights reserved.
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

'use strict';
var net = require('net');
var urlParse = require('url').parse;
var pubsuffix = require('./pubsuffix');
var Store = require('./store').Store;

var punycode;
try {
  punycode = require('punycode');
} catch(e) {
  console.warn("cookie: can't load punycode; won't use punycode for domain normalization");
}

var DATE_DELIM = /[\x09\x20-\x2F\x3B-\x40\x5B-\x60\x7B-\x7E]/;

// From RFC2616 S2.2:
var TOKEN = /[\x21\x23-\x26\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5A\x5E-\x7A\x7C\x7E]/;

// From RFC6265 S4.1.1
// note that it excludes \x3B ";"
var COOKIE_OCTET  = /[\x21\x23-\x2B\x2D-\x3A\x3C-\x5B\x5D-\x7E]/;
var COOKIE_OCTETS = new RegExp('^'+COOKIE_OCTET.source+'$');

// The name/key cannot be empty but the value can (S5.2):
var COOKIE_PAIR_STRICT = new RegExp('^('+TOKEN.source+'+)=("?)('+COOKIE_OCTET.source+'*)\\2$');
var COOKIE_PAIR = /^([^=\s]+)\s*=\s*("?)\s*(.*)\s*\2\s*$/;

// RFC6265 S4.1.1 defines extension-av as 'any CHAR except CTLs or ";"'
// Note ';' is \x3B
var NON_CTL_SEMICOLON = /[\x20-\x3A\x3C-\x7E]+/;
var EXTENSION_AV = NON_CTL_SEMICOLON;
var PATH_VALUE = NON_CTL_SEMICOLON;

// Used for checking whether or not there is a trailing semi-colon
var TRAILING_SEMICOLON = /;+$/;

/* RFC6265 S5.1.1.5:
 * [fail if] the day-of-month-value is less than 1 or greater than 31
 */
var DAY_OF_MONTH = /^(0?[1-9]|[12][0-9]|3[01])$/;

/* RFC6265 S5.1.1.5:
 * [fail if]
 * *  the hour-value is greater than 23,
 * *  the minute-value is greater than 59, or
 * *  the second-value is greater than 59.
 */
var TIME = /(0?[0-9]|1[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])/;
var STRICT_TIME = /^(0?[0-9]|1[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])$/;

var MONTH = /^(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)$/i;
var MONTH_TO_NUM = {
  jan:0, feb:1, mar:2, apr:3, may:4, jun:5,
  jul:6, aug:7, sep:8, oct:9, nov:10, dec:11
};
var NUM_TO_MONTH = [
  'Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'
];
var NUM_TO_DAY = [
  'Sun','Mon','Tue','Wed','Thu','Fri','Sat'
];

var YEAR = /^([1-9][0-9]{1,3})$/; // 2 to 4 digits

var MAX_TIME = 2147483647000; // 31-bit max
var MIN_TIME = 0; // 31-bit min


// RFC6265 S5.1.1 date parser:
function parseDate(str,strict) {
  if (!str) {
    return;
  }
  var found_time, found_dom, found_month, found_year;

  /* RFC6265 S5.1.1:
   * 2. Process each date-token sequentially in the order the date-tokens
   * appear in the cookie-date
   */
  var tokens = str.split(DATE_DELIM);
  if (!tokens) {
    return;
  }

  var date = new Date();
  date.setMilliseconds(0);

  for (var i=0; i<tokens.length; i++) {
    var token = tokens[i].trim();
    if (!token.length) {
      continue;
    }

    var result;

    /* 2.1. If the found-time flag is not set and the token matches the time
     * production, set the found-time flag and set the hour- value,
     * minute-value, and second-value to the numbers denoted by the digits in
     * the date-token, respectively.  Skip the remaining sub-steps and continue
     * to the next date-token.
     */
    if (!found_time) {
      result = (strict ? STRICT_TIME : TIME).exec(token);
      if (result) {
        found_time = true;
        date.setUTCHours(result[1]);
        date.setUTCMinutes(result[2]);
        date.setUTCSeconds(result[3]);
        continue;
      }
    }

    /* 2.2. If the found-day-of-month flag is not set and the date-token matches
     * the day-of-month production, set the found-day-of- month flag and set
     * the day-of-month-value to the number denoted by the date-token.  Skip
     * the remaining sub-steps and continue to the next date-token.
     */
    if (!found_dom) {
      result = DAY_OF_MONTH.exec(token);
      if (result) {
        found_dom = true;
        date.setUTCDate(result[1]);
        continue;
      }
    }

    /* 2.3. If the found-month flag is not set and the date-token matches the
     * month production, set the found-month flag and set the month-value to
     * the month denoted by the date-token.  Skip the remaining sub-steps and
     * continue to the next date-token.
     */
    if (!found_month) {
      result = MONTH.exec(token);
      if (result) {
        found_month = true;
        date.setUTCMonth(MONTH_TO_NUM[result[1].toLowerCase()]);
        continue;
      }
    }

    /* 2.4. If the found-year flag is not set and the date-token matches the year
     * production, set the found-year flag and set the year-value to the number
     * denoted by the date-token.  Skip the remaining sub-steps and continue to
     * the next date-token.
     */
    if (!found_year) {
      result = YEAR.exec(token);
      if (result) {
        var year = result[0];
        /* From S5.1.1:
         * 3.  If the year-value is greater than or equal to 70 and less
         * than or equal to 99, increment the year-value by 1900.
         * 4.  If the year-value is greater than or equal to 0 and less
         * than or equal to 69, increment the year-value by 2000.
         */
        if (70 <= year && year <= 99) {
          year += 1900;
        } else if (0 <= year && year <= 69) {
          year += 2000;
        }

        if (year < 1601) {
          return; // 5. ... the year-value is less than 1601
        }

        found_year = true;
        date.setUTCFullYear(year);
        continue;
      }
    }
  }

  if (!(found_time && found_dom && found_month && found_year)) {
    return; // 5. ... at least one of the found-day-of-month, found-month, found-
            // year, or found-time flags is not set,
  }

  return date;
}

function formatDate(date) {
  var d = date.getUTCDate(); d = d >= 10 ? d : '0'+d;
  var h = date.getUTCHours(); h = h >= 10 ? h : '0'+h;
  var m = date.getUTCMinutes(); m = m >= 10 ? m : '0'+m;
  var s = date.getUTCSeconds(); s = s >= 10 ? s : '0'+s;
  return NUM_TO_DAY[date.getUTCDay()] + ', ' +
    d+' '+ NUM_TO_MONTH[date.getUTCMonth()] +' '+ date.getUTCFullYear() +' '+
    h+':'+m+':'+s+' GMT';
}

// S5.1.2 Canonicalized Host Names
function canonicalDomain(str) {
  if (str == null) {
    return null;
  }
  str = str.trim().replace(/^\./,''); // S4.1.2.3 & S5.2.3: ignore leading .

  // convert to IDN if any non-ASCII characters
  if (punycode && /[^\u0001-\u007f]/.test(str)) {
    str = punycode.toASCII(str);
  }

  return str.toLowerCase();
}

// S5.1.3 Domain Matching
function domainMatch(str, domStr, canonicalize) {
  if (str == null || domStr == null) {
    return null;
  }
  if (canonicalize !== false) {
    str = canonicalDomain(str);
    domStr = canonicalDomain(domStr);
  }

  /*
   * "The domain string and the string are identical. (Note that both the
   * domain string and the string will have been canonicalized to lower case at
   * this point)"
   */
  if (str == domStr) {
    return true;
  }

  /* "All of the following [three] conditions hold:" (order adjusted from the RFC) */

  /* "* The string is a host name (i.e., not an IP address)." */
  if (net.isIP(str)) {
    return false;
  }

  /* "* The domain string is a suffix of the string" */
  var idx = str.indexOf(domStr);
  if (idx <= 0) {
    return false; // it's a non-match (-1) or prefix (0)
  }

  // e.g "a.b.c".indexOf("b.c") === 2
  // 5 === 3+2
  if (str.length !== domStr.length + idx) { // it's not a suffix
    return false;
  }

  /* "* The last character of the string that is not included in the domain
  * string is a %x2E (".") character." */
  if (str.substr(idx-1,1) !== '.') {
    return false;
  }

  return true;
}


// RFC6265 S5.1.4 Paths and Path-Match

/*
 * "The user agent MUST use an algorithm equivalent to the following algorithm
 * to compute the default-path of a cookie:"
 *
 * Assumption: the path (and not query part or absolute uri) is passed in.
 */
function defaultPath(path) {
  // "2. If the uri-path is empty or if the first character of the uri-path is not
  // a %x2F ("/") character, output %x2F ("/") and skip the remaining steps.
  if (!path || path.substr(0,1) !== "/") {
    return "/";
  }

  // "3. If the uri-path contains no more than one %x2F ("/") character, output
  // %x2F ("/") and skip the remaining step."
  if (path === "/") {
    return path;
  }

  var rightSlash = path.lastIndexOf("/");
  if (rightSlash === 0) {
    return "/";
  }

  // "4. Output the characters of the uri-path from the first character up to,
  // but not including, the right-most %x2F ("/")."
  return path.slice(0, rightSlash);
}

/*
 * "A request-path path-matches a given cookie-path if at least one of the
 * following conditions holds:"
 */
function pathMatch(reqPath,cookiePath) {
  // "o  The cookie-path and the request-path are identical."
  if (cookiePath === reqPath) {
    return true;
  }

  var idx = reqPath.indexOf(cookiePath);
  if (idx === 0) {
    // "o  The cookie-path is a prefix of the request-path, and the last
    // character of the cookie-path is %x2F ("/")."
    if (cookiePath.substr(-1) === "/") {
      return true;
    }

    // " o  The cookie-path is a prefix of the request-path, and the first
    // character of the request-path that is not included in the cookie- path
    // is a %x2F ("/") character."
    if (reqPath.substr(cookiePath.length,1) === "/") {
      return true;
    }
  }

  return false;
}

function parse(str, strict) {
  str = str.trim();

  // S4.1.1 Trailing semi-colons are not part of the specification.
  // If we are not in strict mode we remove the trailing semi-colons.
  var semiColonCheck = TRAILING_SEMICOLON.exec(str);
  if (semiColonCheck) {
    if (strict) {
      return;
    }
    str = str.slice(0, semiColonCheck.index);
  }

  // We use a regex to parse the "name-value-pair" part of S5.2
  var firstSemi = str.indexOf(';'); // S5.2 step 1
  var pairRx = strict ? COOKIE_PAIR_STRICT : COOKIE_PAIR;
  var result = pairRx.exec(firstSemi === -1 ? str : str.substr(0,firstSemi));

  // Rx satisfies the "the name string is empty" and "lacks a %x3D ("=")"
  // constraints as well as trimming any whitespace.
  if (!result) {
    return;
  }

  var c = new Cookie();
  c.key = result[1]; // the regexp should trim() already
  c.value = result[3]; // [2] is quotes or empty-string

  if (firstSemi === -1) {
    return c;
  }

  // S5.2.3 "unparsed-attributes consist of the remainder of the set-cookie-string
  // (including the %x3B (";") in question)." plus later on in the same section
  // "discard the first ";" and trim".
  var unparsed = str.slice(firstSemi).replace(/^\s*;\s*/,'').trim();

  // "If the unparsed-attributes string is empty, skip the rest of these
  // steps."
  if (unparsed.length === 0) {
    return c;
  }

  /*
   * S5.2 says that when looping over the items "[p]rocess the attribute-name
   * and attribute-value according to the requirements in the following
   * subsections" for every item.  Plus, for many of the individual attributes
   * in S5.3 it says to use the "attribute-value of the last attribute in the
   * cookie-attribute-list".  Therefore, in this implementation, we overwrite
   * the previous value.
   */
  var cookie_avs = unparsed.split(/\s*;\s*/);
  while (cookie_avs.length) {
    var av = cookie_avs.shift();

    if (strict && !EXTENSION_AV.test(av)) {
      return;
    }

    var av_sep = av.indexOf('=');
    var av_key, av_value;
    if (av_sep === -1) {
      av_key = av;
      av_value = null;
    } else {
      av_key = av.substr(0,av_sep);
      av_value = av.substr(av_sep+1);
    }

    av_key = av_key.trim().toLowerCase();
    if (av_value) {
      av_value = av_value.trim();
    }

    switch(av_key) {
    case 'expires': // S5.2.1
      if (!av_value) {if(strict){return;}else{break;} }
      var exp = parseDate(av_value,strict);
      // "If the attribute-value failed to parse as a cookie date, ignore the
      // cookie-av."
      if (exp == null) { if(strict){return;}else{break;} }
      c.expires = exp;
      // over and underflow not realistically a concern: V8's getTime() seems to
      // store something larger than a 32-bit time_t (even with 32-bit node)
      break;

    case 'max-age': // S5.2.2
      if (!av_value) { if(strict){return;}else{break;} }
      // "If the first character of the attribute-value is not a DIGIT or a "-"
      // character ...[or]... If the remainder of attribute-value contains a
      // non-DIGIT character, ignore the cookie-av."
      if (!/^-?[0-9]+$/.test(av_value)) { if(strict){return;}else{break;} }
      var delta = parseInt(av_value,10);
      if (strict && delta <= 0) {
        return; // S4.1.1
      }
      // "If delta-seconds is less than or equal to zero (0), let expiry-time
      // be the earliest representable date and time."
      c.setMaxAge(delta);
      break;

    case 'domain': // S5.2.3
      // "If the attribute-value is empty, the behavior is undefined.  However,
      // the user agent SHOULD ignore the cookie-av entirely."
      if (!av_value) { if(strict){return;}else{break;} }
      // S5.2.3 "Let cookie-domain be the attribute-value without the leading %x2E
      // (".") character."
      var domain = av_value.trim().replace(/^\./,'');
      if (!domain) { if(strict){return;}else{break;} } // see "is empty" above
      // "Convert the cookie-domain to lower case."
      c.domain = domain.toLowerCase();
      break;

    case 'path': // S5.2.4
      /*
       * "If the attribute-value is empty or if the first character of the
       * attribute-value is not %x2F ("/"):
       *   Let cookie-path be the default-path.
       * Otherwise:
       *   Let cookie-path be the attribute-value."
       *
       * We'll represent the default-path as null since it depends on the
       * context of the parsing.
       */
      if (!av_value || av_value.substr(0,1) != "/") {
        if(strict){return;}else{break;}
      }
      c.path = av_value;
      break;

    case 'secure': // S5.2.5
      /*
       * "If the attribute-name case-insensitively matches the string "Secure",
       * the user agent MUST append an attribute to the cookie-attribute-list
       * with an attribute-name of Secure and an empty attribute-value."
       */
      if (av_value != null) { if(strict){return;} }
      c.secure = true;
      break;

    case 'httponly': // S5.2.6 -- effectively the same as 'secure'
      if (av_value != null) { if(strict){return;} }
      c.httpOnly = true;
      break;

    default:
      c.extensions = c.extensions || [];
      c.extensions.push(av);
      break;
    }
  }

  // ensure a default date for sorting:
  c.creation = new Date();
  return c;
}

function fromJSON(str) {
  if (!str) {
    return null;
  }

  var obj;
  try {
    obj = JSON.parse(str);
  } catch (e) {
    return null;
  }

  var c = new Cookie();
  for (var i=0; i<numCookieProperties; i++) {
    var prop = cookieProperties[i];
    if (obj[prop] == null) {
      continue;
    }
    if (prop === 'expires' ||
        prop === 'creation' ||
        prop === 'lastAccessed')
    {
      c[prop] = obj[prop] == "Infinity" ? "Infinity" : new Date(obj[prop]);
    } else {
      c[prop] = obj[prop];
    }
  }


  // ensure a default date for sorting:
  c.creation = c.creation || new Date();

  return c;
}

/* Section 5.4 part 2:
 * "*  Cookies with longer paths are listed before cookies with
 *     shorter paths.
 *
 *  *  Among cookies that have equal-length path fields, cookies with
 *     earlier creation-times are listed before cookies with later
 *     creation-times."
 */

function cookieCompare(a,b) {
  // descending for length: b CMP a
  var deltaLen = (b.path ? b.path.length : 0) - (a.path ? a.path.length : 0);
  if (deltaLen !== 0) {
    return deltaLen;
  }
  // ascending for time: a CMP b
  return (a.creation ? a.creation.getTime() : MAX_TIME) -
         (b.creation ? b.creation.getTime() : MAX_TIME);
}

// Gives the permutation of all possible domainMatch()es of a given domain. The
// array is in shortest-to-longest order.  Handy for indexing.
function permuteDomain(domain) {
  var pubSuf = pubsuffix.getPublicSuffix(domain);
  if (!pubSuf) {
    return null;
  }
  if (pubSuf == domain) {
    return [domain];
  }

  var prefix = domain.slice(0,-(pubSuf.length+1)); // ".example.com"
  var parts = prefix.split('.').reverse();
  var cur = pubSuf;
  var permutations = [cur];
  while (parts.length) {
    cur = parts.shift()+'.'+cur;
    permutations.push(cur);
  }
  return permutations;
}

// Gives the permutation of all possible pathMatch()es of a given path. The
// array is in longest-to-shortest order.  Handy for indexing.
function permutePath(path) {
  if (path === '/') {
    return ['/'];
  }
  if (path.lastIndexOf('/') === path.length-1) {
    path = path.substr(0,path.length-1);
  }
  var permutations = [path];
  while (path.length > 1) {
    var lindex = path.lastIndexOf('/');
    if (lindex === 0) {
      break;
    }
    path = path.substr(0,lindex);
    permutations.push(path);
  }
  permutations.push('/');
  return permutations;
}


function Cookie (opts) {
  if (typeof opts !== "object") {
    return;
  }
  Object.keys(opts).forEach(function (key) {
    if (Cookie.prototype.hasOwnProperty(key)) {
      this[key] = opts[key] || Cookie.prototype[key];
    }
  }.bind(this));
}

Cookie.parse = parse;
Cookie.fromJSON = fromJSON;

Cookie.prototype.key = "";
Cookie.prototype.value = "";

// the order in which the RFC has them:
Cookie.prototype.expires = "Infinity"; // coerces to literal Infinity
Cookie.prototype.maxAge = null; // takes precedence over expires for TTL
Cookie.prototype.domain = null;
Cookie.prototype.path = null;
Cookie.prototype.secure = false;
Cookie.prototype.httpOnly = false;
Cookie.prototype.extensions = null;

// set by the CookieJar:
Cookie.prototype.hostOnly = null; // boolean when set
Cookie.prototype.pathIsDefault = null; // boolean when set
Cookie.prototype.creation = null; // Date when set; defaulted by Cookie.parse
Cookie.prototype.lastAccessed = null; // Date when set

var cookieProperties = Object.freeze(Object.keys(Cookie.prototype).map(function(p) {
  if (p instanceof Function) {
    return;
  }
  return p;
}));
var numCookieProperties = cookieProperties.length;

Cookie.prototype.inspect = function inspect() {
  var now = Date.now();
  return 'Cookie="'+this.toString() +
    '; hostOnly='+(this.hostOnly != null ? this.hostOnly : '?') +
    '; aAge='+(this.lastAccessed ? (now-this.lastAccessed.getTime())+'ms' : '?') +
    '; cAge='+(this.creation ? (now-this.creation.getTime())+'ms' : '?') +
    '"';
};

Cookie.prototype.validate = function validate() {
  if (!COOKIE_OCTETS.test(this.value)) {
    return false;
  }
  if (this.expires != Infinity && !(this.expires instanceof Date) && !parseDate(this.expires,true)) {
    return false;
  }
  if (this.maxAge != null && this.maxAge <= 0) {
    return false; // "Max-Age=" non-zero-digit *DIGIT
  }
  if (this.path != null && !PATH_VALUE.test(this.path)) {
    return false;
  }

  var cdomain = this.cdomain();
  if (cdomain) {
    if (cdomain.match(/\.$/)) {
      return false; // S4.1.2.3 suggests that this is bad. domainMatch() tests confirm this
    }
    var suffix = pubsuffix.getPublicSuffix(cdomain);
    if (suffix == null) { // it's a public suffix
      return false;
    }
  }
  return true;
};

Cookie.prototype.setExpires = function setExpires(exp) {
  if (exp instanceof Date) {
    this.expires = exp;
  } else {
    this.expires = parseDate(exp) || "Infinity";
  }
};

Cookie.prototype.setMaxAge = function setMaxAge(age) {
  if (age === Infinity || age === -Infinity) {
    this.maxAge = age.toString(); // so JSON.stringify() works
  } else {
    this.maxAge = age;
  }
};

// gives Cookie header format
Cookie.prototype.cookieString = function cookieString() {
  var val = this.value;
  if (val == null) {
    val = '';
  }
  return this.key+'='+val;
};

// gives Set-Cookie header format
Cookie.prototype.toString = function toString() {
  var str = this.cookieString();

  if (this.expires != Infinity) {
    if (this.expires instanceof Date) {
      str += '; Expires='+formatDate(this.expires);
    } else {
      str += '; Expires='+this.expires;
    }
  }

  if (this.maxAge != null && this.maxAge != Infinity) {
    str += '; Max-Age='+this.maxAge;
  }

  if (this.domain && !this.hostOnly) {
    str += '; Domain='+this.domain;
  }
  if (this.path) {
    str += '; Path='+this.path;
  }

  if (this.secure) {
    str += '; Secure';
  }
  if (this.httpOnly) {
    str += '; HttpOnly';
  }
  if (this.extensions) {
    this.extensions.forEach(function(ext) {
      str += '; '+ext;
    });
  }

  return str;
};

// TTL() partially replaces the "expiry-time" parts of S5.3 step 3 (setCookie()
// elsewhere)
// S5.3 says to give the "latest representable date" for which we use Infinity
// For "expired" we use 0
Cookie.prototype.TTL = function TTL(now) {
  /* RFC6265 S4.1.2.2 If a cookie has both the Max-Age and the Expires
   * attribute, the Max-Age attribute has precedence and controls the
   * expiration date of the cookie.
   * (Concurs with S5.3 step 3)
   */
  if (this.maxAge != null) {
    return this.maxAge<=0 ? 0 : this.maxAge*1000;
  }

  var expires = this.expires;
  if (expires != Infinity) {
    if (!(expires instanceof Date)) {
      expires = parseDate(expires) || Infinity;
    }

    if (expires == Infinity) {
      return Infinity;
    }

    return expires.getTime() - (now || Date.now());
  }

  return Infinity;
};

// expiryTime() replaces the "expiry-time" parts of S5.3 step 3 (setCookie()
// elsewhere)
Cookie.prototype.expiryTime = function expiryTime(now) {
  if (this.maxAge != null) {
    var relativeTo = this.creation || now || new Date();
    var age = (this.maxAge <= 0) ? -Infinity : this.maxAge*1000;
    return relativeTo.getTime() + age;
  }

  if (this.expires == Infinity) {
    return Infinity;
  }
  return this.expires.getTime();
};

// expiryDate() replaces the "expiry-time" parts of S5.3 step 3 (setCookie()
// elsewhere), except it returns a Date
Cookie.prototype.expiryDate = function expiryDate(now) {
  var millisec = this.expiryTime(now);
  if (millisec == Infinity) {
    return new Date(MAX_TIME);
  } else if (millisec == -Infinity) {
    return new Date(MIN_TIME);
  } else {
    return new Date(millisec);
  }
};

// This replaces the "persistent-flag" parts of S5.3 step 3
Cookie.prototype.isPersistent = function isPersistent() {
  return (this.maxAge != null || this.expires != Infinity);
};

// Mostly S5.1.2 and S5.2.3:
Cookie.prototype.cdomain =
Cookie.prototype.canonicalizedDomain = function canonicalizedDomain() {
  if (this.domain == null) {
    return null;
  }
  return canonicalDomain(this.domain);
};


var memstore;
function CookieJar(store, rejectPublicSuffixes) {
  if (rejectPublicSuffixes != null) {
    this.rejectPublicSuffixes = rejectPublicSuffixes;
  }

  if (!store) {
    memstore = memstore || require('./memstore');
    store = new memstore.MemoryCookieStore();
  }
  this.store = store;
}
CookieJar.prototype.store = null;
CookieJar.prototype.rejectPublicSuffixes = true;
var CAN_BE_SYNC = [];

CAN_BE_SYNC.push('setCookie');
CookieJar.prototype.setCookie = function(cookie, url, options, cb) {
  var err;
  var context = (url instanceof Object) ? url : urlParse(url);
  if (options instanceof Function) {
    cb = options;
    options = {};
  }

  var host = canonicalDomain(context.hostname);

  // S5.3 step 1
  if (!(cookie instanceof Cookie)) {
    cookie = Cookie.parse(cookie, options.strict === true);
  }
  if (!cookie) {
    err = new Error("Cookie failed to parse");
    return cb(options.ignoreError ? null : err);
  }

  // S5.3 step 2
  var now = options.now || new Date(); // will assign later to save effort in the face of errors

  // S5.3 step 3: NOOP; persistent-flag and expiry-time is handled by getCookie()

  // S5.3 step 4: NOOP; domain is null by default

  // S5.3 step 5: public suffixes
  if (this.rejectPublicSuffixes && cookie.domain) {
    var suffix = pubsuffix.getPublicSuffix(cookie.cdomain());
    if (suffix == null) { // e.g. "com"
      err = new Error("Cookie has domain set to a public suffix");
      return cb(options.ignoreError ? null : err);
    }
  }

  // S5.3 step 6:
  if (cookie.domain) {
    if (!domainMatch(host, cookie.cdomain(), false)) {
      err = new Error("Cookie not in this host's domain. Cookie:"+cookie.cdomain()+" Request:"+host);
      return cb(options.ignoreError ? null : err);
    }

    if (cookie.hostOnly == null) { // don't reset if already set
      cookie.hostOnly = false;
    }

  } else {
    cookie.hostOnly = true;
    cookie.domain = host;
  }

  // S5.3 step 7: "Otherwise, set the cookie's path to the default-path of the
  // request-uri"
  if (!cookie.path) {
    cookie.path = defaultPath(context.pathname);
    cookie.pathIsDefault = true;
  } else {
    if (cookie.path.length > 1 && cookie.path.substr(-1) == '/') {
      cookie.path = cookie.path.slice(0,-1);
    }
  }

  // S5.3 step 8: NOOP; secure attribute
  // S5.3 step 9: NOOP; httpOnly attribute

  // S5.3 step 10
  if (options.http === false && cookie.httpOnly) {
    err = new Error("Cookie is HttpOnly and this isn't an HTTP API");
    return cb(options.ignoreError ? null : err);
  }

  var store = this.store;

  if (!store.updateCookie) {
    store.updateCookie = function(oldCookie, newCookie, cb) {
      this.putCookie(newCookie, cb);
    };
  }

  function withCookie(err, oldCookie) {
    if (err) {
      return cb(err);
    }

    var next = function(err) {
      if (err) {
        return cb(err);
      } else {
        cb(null, cookie);
      }
    };

    if (oldCookie) {
      // S5.3 step 11 - "If the cookie store contains a cookie with the same name,
      // domain, and path as the newly created cookie:"
      if (options.http === false && oldCookie.httpOnly) { // step 11.2
        err = new Error("old Cookie is HttpOnly and this isn't an HTTP API");
        return cb(options.ignoreError ? null : err);
      }
      cookie.creation = oldCookie.creation; // step 11.3
      cookie.lastAccessed = now;
      // Step 11.4 (delete cookie) is implied by just setting the new one:
      store.updateCookie(oldCookie, cookie, next); // step 12

    } else {
      cookie.creation = cookie.lastAccessed = now;
      store.putCookie(cookie, next); // step 12
    }
  }

  store.findCookie(cookie.domain, cookie.path, cookie.key, withCookie);
};

// RFC6365 S5.4
CAN_BE_SYNC.push('getCookies');
CookieJar.prototype.getCookies = function(url, options, cb) {
  var context = (url instanceof Object) ? url : urlParse(url);
  if (options instanceof Function) {
    cb = options;
    options = {};
  }

  var host = canonicalDomain(context.hostname);
  var path = context.pathname || '/';

  var secure = options.secure;
  if (secure == null && context.protocol &&
      (context.protocol == 'https:' || context.protocol == 'wss:'))
  {
    secure = true;
  }

  var http = options.http;
  if (http == null) {
    http = true;
  }

  var now = options.now || Date.now();
  var expireCheck = options.expire !== false;
  var allPaths = !!options.allPaths;
  var store = this.store;

  function matchingCookie(c) {
    // "Either:
    //   The cookie's host-only-flag is true and the canonicalized
    //   request-host is identical to the cookie's domain.
    // Or:
    //   The cookie's host-only-flag is false and the canonicalized
    //   request-host domain-matches the cookie's domain."
    if (c.hostOnly) {
      if (c.domain != host) {
        return false;
      }
    } else {
      if (!domainMatch(host, c.domain, false)) {
        return false;
      }
    }

    // "The request-uri's path path-matches the cookie's path."
    if (!allPaths && !pathMatch(path, c.path)) {
      return false;
    }

    // "If the cookie's secure-only-flag is true, then the request-uri's
    // scheme must denote a "secure" protocol"
    if (c.secure && !secure) {
      return false;
    }

    // "If the cookie's http-only-flag is true, then exclude the cookie if the
    // cookie-string is being generated for a "non-HTTP" API"
    if (c.httpOnly && !http) {
      return false;
    }

    // deferred from S5.3
    // non-RFC: allow retention of expired cookies by choice
    if (expireCheck && c.expiryTime() <= now) {
      store.removeCookie(c.domain, c.path, c.key, function(){}); // result ignored
      return false;
    }

    return true;
  }

  store.findCookies(host, allPaths ? null : path, function(err,cookies) {
    if (err) {
      return cb(err);
    }

    cookies = cookies.filter(matchingCookie);

    // sorting of S5.4 part 2
    if (options.sort !== false) {
      cookies = cookies.sort(cookieCompare);
    }

    // S5.4 part 3
    var now = new Date();
    cookies.forEach(function(c) {
      c.lastAccessed = now;
    });
    // TODO persist lastAccessed

    cb(null,cookies);
  });
};

CAN_BE_SYNC.push('getCookieString');
CookieJar.prototype.getCookieString = function(/*..., cb*/) {
  var args = Array.prototype.slice.call(arguments,0);
  var cb = args.pop();
  var next = function(err,cookies) {
    if (err) {
      cb(err);
    } else {
      cb(null, cookies.map(function(c){
        return c.cookieString();
      }).join('; '));
    }
  };
  args.push(next);
  this.getCookies.apply(this,args);
};

CAN_BE_SYNC.push('getSetCookieStrings');
CookieJar.prototype.getSetCookieStrings = function(/*..., cb*/) {
  var args = Array.prototype.slice.call(arguments,0);
  var cb = args.pop();
  var next = function(err,cookies) {
    if (err) {
      cb(err);
    } else {
      cb(null, cookies.map(function(c){
        return c.toString();
      }));
    }
  };
  args.push(next);
  this.getCookies.apply(this,args);
};

// Use a closure to provide a true imperative API for synchronous stores.
function syncWrap(method) {
  return function() {
    if (!this.store.synchronous) {
      throw new Error('CookieJar store is not synchronous; use async API instead.');
    }

    var args = Array.prototype.slice.call(arguments);
    var syncErr, syncResult;
    args.push(function syncCb(err, result) {
      syncErr = err;
      syncResult = result;
    });
    this[method].apply(this, args);

    if (syncErr) {
      throw syncErr;
    }
    return syncResult;
  };
}

// wrap all declared CAN_BE_SYNC methods in the sync wrapper
CAN_BE_SYNC.forEach(function(method) {
  CookieJar.prototype[method+'Sync'] = syncWrap(method);
});

module.exports = {
  CookieJar: CookieJar,
  Cookie: Cookie,
  Store: Store,
  parseDate: parseDate,
  formatDate: formatDate,
  parse: parse,
  fromJSON: fromJSON,
  domainMatch: domainMatch,
  defaultPath: defaultPath,
  pathMatch: pathMatch,
  getPublicSuffix: pubsuffix.getPublicSuffix,
  cookieCompare: cookieCompare,
  permuteDomain: permuteDomain,
  permutePath: permutePath,
  canonicalDomain: canonicalDomain,
};

},{"./memstore":134,"./pubsuffix":135,"./store":136,"net":161,"punycode":382,"url":407}],134:[function(require,module,exports){
'use strict';
var tough = require('./cookie');
var Store = require('./store').Store;
var permuteDomain = tough.permuteDomain;
var permutePath = tough.permutePath;
var util = require('util');

function MemoryCookieStore() {
  Store.call(this);
  this.idx = {};
}
util.inherits(MemoryCookieStore, Store);
exports.MemoryCookieStore = MemoryCookieStore;
MemoryCookieStore.prototype.idx = null;
MemoryCookieStore.prototype.synchronous = true;

// force a default depth:
MemoryCookieStore.prototype.inspect = function() {
  return "{ idx: "+util.inspect(this.idx, false, 2)+' }';
};

MemoryCookieStore.prototype.findCookie = function(domain, path, key, cb) {
  if (!this.idx[domain]) {
    return cb(null,undefined);
  }
  if (!this.idx[domain][path]) {
    return cb(null,undefined);
  }
  return cb(null,this.idx[domain][path][key]||null);
};

MemoryCookieStore.prototype.findCookies = function(domain, path, cb) {
  var results = [];
  if (!domain) {
    return cb(null,[]);
  }

  var pathMatcher;
  if (!path) {
    // null or '/' means "all paths"
    pathMatcher = function matchAll(domainIndex) {
      for (var curPath in domainIndex) {
        var pathIndex = domainIndex[curPath];
        for (var key in pathIndex) {
          results.push(pathIndex[key]);
        }
      }
    };

  } else if (path === '/') {
    pathMatcher = function matchSlash(domainIndex) {
      var pathIndex = domainIndex['/'];
      if (!pathIndex) {
        return;
      }
      for (var key in pathIndex) {
        results.push(pathIndex[key]);
      }
    };

  } else {
    var paths = permutePath(path) || [path];
    pathMatcher = function matchRFC(domainIndex) {
      paths.forEach(function(curPath) {
        var pathIndex = domainIndex[curPath];
        if (!pathIndex) {
          return;
        }
        for (var key in pathIndex) {
          results.push(pathIndex[key]);
        }
      });
    };
  }

  var domains = permuteDomain(domain) || [domain];
  var idx = this.idx;
  domains.forEach(function(curDomain) {
    var domainIndex = idx[curDomain];
    if (!domainIndex) {
      return;
    }
    pathMatcher(domainIndex);
  });

  cb(null,results);
};

MemoryCookieStore.prototype.putCookie = function(cookie, cb) {
  if (!this.idx[cookie.domain]) {
    this.idx[cookie.domain] = {};
  }
  if (!this.idx[cookie.domain][cookie.path]) {
    this.idx[cookie.domain][cookie.path] = {};
  }
  this.idx[cookie.domain][cookie.path][cookie.key] = cookie;
  cb(null);
};

MemoryCookieStore.prototype.updateCookie = function updateCookie(oldCookie, newCookie, cb) {
  // updateCookie() may avoid updating cookies that are identical.  For example,
  // lastAccessed may not be important to some stores and an equality
  // comparison could exclude that field.
  this.putCookie(newCookie,cb);
};

MemoryCookieStore.prototype.removeCookie = function removeCookie(domain, path, key, cb) {
  if (this.idx[domain] && this.idx[domain][path] && this.idx[domain][path][key]) {
    delete this.idx[domain][path][key];
  }
  cb(null);
};

MemoryCookieStore.prototype.removeCookies = function removeCookies(domain, path, cb) {
  if (this.idx[domain]) {
    if (path) {
      delete this.idx[domain][path];
    } else {
      delete this.idx[domain];
    }
  }
  return cb(null);
};

},{"./cookie":133,"./store":136,"util":410}],135:[function(require,module,exports){
/****************************************************
 * AUTOMATICALLY GENERATED by generate-pubsuffix.js *
 *                  DO NOT EDIT!                    *
 ****************************************************/

module.exports.getPublicSuffix = function getPublicSuffix(domain) {
  /*
   * Copyright GoInstant, Inc. and other contributors. All rights reserved.
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to
   * deal in the Software without restriction, including without limitation the
   * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   * sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   */
  if (!domain) return null;
  if (domain.match(/^\./)) return null;

  domain = domain.toLowerCase();
  var parts = domain.split('.').reverse();

  var suffix = '';
  var suffixLen = 0;
  for (var i=0; i<parts.length; i++) {
    var part = parts[i];
    var starstr = '*'+suffix;
    var partstr = part+suffix;

    if (index[starstr]) { // star rule matches
      suffixLen = i+1;
      if (index[partstr] === false) { // exception rule matches (NB: false, not undefined)
        suffixLen--;
      }
    } else if (index[partstr]) { // exact match, not exception
      suffixLen = i+1;
    }

    suffix = '.'+part+suffix;
  }

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  }

  if (suffixLen && parts.length > suffixLen) {
    return parts.slice(0,suffixLen+1).reverse().join('.');
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  return null;
};

// The following generated structure is used under the MPL version 1.1
// See public-suffix.txt for more information

var index = module.exports.index = Object.freeze(
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// END of automatically generated file

},{}],136:[function(require,module,exports){
'use strict';
/*jshint unused:false */

function Store() {
}
exports.Store = Store;

// Stores may be synchronous, but are still required to use a
// Continuation-Passing Style API.  The CookieJar itself will expose a "*Sync"
// API that converts from synchronous-callbacks to imperative style.
Store.prototype.synchronous = false;

Store.prototype.findCookie = function(domain, path, key, cb) {
  throw new Error('findCookie is not implemented');
};

Store.prototype.findCookies = function(domain, path, cb) {
  throw new Error('findCookies is not implemented');
};

Store.prototype.putCookie = function(cookie, cb) {
  throw new Error('putCookie is not implemented');
};

Store.prototype.updateCookie = function(oldCookie, newCookie, cb) {
  // recommended default implementation:
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  throw new Error('updateCookie is not implemented');
};

Store.prototype.removeCookie = function(domain, path, key, cb) {
  throw new Error('removeCookie is not implemented');
};

Store.prototype.removeCookies = function removeCookies(domain, path, cb) {
  throw new Error('removeCookies is not implemented');
};

},{}],137:[function(require,module,exports){
(function (process,Buffer){
'use strict'

var net = require('net')
  , tls = require('tls')
  , http = require('http')
  , https = require('https')
  , events = require('events')
  , assert = require('assert')
  , util = require('util')
  ;

exports.httpOverHttp = httpOverHttp
exports.httpsOverHttp = httpsOverHttp
exports.httpOverHttps = httpOverHttps
exports.httpsOverHttps = httpsOverHttps


function httpOverHttp(options) {
  var agent = new TunnelingAgent(options)
  agent.request = http.request
  return agent
}

function httpsOverHttp(options) {
  var agent = new TunnelingAgent(options)
  agent.request = http.request
  agent.createSocket = createSecureSocket
  return agent
}

function httpOverHttps(options) {
  var agent = new TunnelingAgent(options)
  agent.request = https.request
  return agent
}

function httpsOverHttps(options) {
  var agent = new TunnelingAgent(options)
  agent.request = https.request
  agent.createSocket = createSecureSocket
  return agent
}


function TunnelingAgent(options) {
  var self = this
  self.options = options || {}
  self.proxyOptions = self.options.proxy || {}
  self.maxSockets = self.options.maxSockets || http.Agent.defaultMaxSockets
  self.requests = []
  self.sockets = []

  self.on('free', function onFree(socket, host, port) {
    for (var i = 0, len = self.requests.length; i < len; ++i) {
      var pending = self.requests[i]
      if (pending.host === host && pending.port === port) {
        // Detect the request to connect same origin server,
        // reuse the connection.
        self.requests.splice(i, 1)
        pending.request.onSocket(socket)
        return
      }
    }
    socket.destroy()
    self.removeSocket(socket)
  })
}
util.inherits(TunnelingAgent, events.EventEmitter)

TunnelingAgent.prototype.addRequest = function addRequest(req, options) {
  var self = this

   // Legacy API: addRequest(req, host, port, path)
  if (typeof options === 'string') {
    options = {
      host: options,
      port: arguments[2],
      path: arguments[3]
    };
  }

  if (self.sockets.length >= this.maxSockets) {
    // We are over limit so we'll add it to the queue.
    self.requests.push({host: host, port: port, request: req})
    return
  }

  // If we are under maxSockets create a new one.
  self.createSocket({host: options.host, port: options.port, request: req}, function(socket) {
    socket.on('free', onFree)
    socket.on('close', onCloseOrRemove)
    socket.on('agentRemove', onCloseOrRemove)
    req.onSocket(socket)

    function onFree() {
      self.emit('free', socket, options.host, options.port)
    }

    function onCloseOrRemove(err) {
      self.removeSocket()
      socket.removeListener('free', onFree)
      socket.removeListener('close', onCloseOrRemove)
      socket.removeListener('agentRemove', onCloseOrRemove)
    }
  })
}

TunnelingAgent.prototype.createSocket = function createSocket(options, cb) {
  var self = this
  var placeholder = {}
  self.sockets.push(placeholder)

  var connectOptions = mergeOptions({}, self.proxyOptions, 
    { method: 'CONNECT'
    , path: options.host + ':' + options.port
    , agent: false
    }
  )
  if (connectOptions.proxyAuth) {
    connectOptions.headers = connectOptions.headers || {}
    connectOptions.headers['Proxy-Authorization'] = 'Basic ' +
        new Buffer(connectOptions.proxyAuth).toString('base64')
  }

  debug('making CONNECT request')
  var connectReq = self.request(connectOptions)
  connectReq.useChunkedEncodingByDefault = false // for v0.6
  connectReq.once('response', onResponse) // for v0.6
  connectReq.once('upgrade', onUpgrade)   // for v0.6
  connectReq.once('connect', onConnect)   // for v0.7 or later
  connectReq.once('error', onError)
  connectReq.end()

  function onResponse(res) {
    // Very hacky. This is necessary to avoid http-parser leaks.
    res.upgrade = true
  }

  function onUpgrade(res, socket, head) {
    // Hacky.
    process.nextTick(function() {
      onConnect(res, socket, head)
    })
  }

  function onConnect(res, socket, head) {
    connectReq.removeAllListeners()
    socket.removeAllListeners()

    if (res.statusCode === 200) {
      assert.equal(head.length, 0)
      debug('tunneling connection has established')
      self.sockets[self.sockets.indexOf(placeholder)] = socket
      cb(socket)
    } else {
      debug('tunneling socket could not be established, statusCode=%d', res.statusCode)
      var error = new Error('tunneling socket could not be established, ' + 'statusCode=' + res.statusCode)
      error.code = 'ECONNRESET'
      options.request.emit('error', error)
      self.removeSocket(placeholder)
    }
  }

  function onError(cause) {
    connectReq.removeAllListeners()

    debug('tunneling socket could not be established, cause=%s\n', cause.message, cause.stack)
    var error = new Error('tunneling socket could not be established, ' + 'cause=' + cause.message)
    error.code = 'ECONNRESET'
    options.request.emit('error', error)
    self.removeSocket(placeholder)
  }
}

TunnelingAgent.prototype.removeSocket = function removeSocket(socket) {
  var pos = this.sockets.indexOf(socket)
  if (pos === -1) return
  
  this.sockets.splice(pos, 1)

  var pending = this.requests.shift()
  if (pending) {
    // If we have pending requests and a socket gets closed a new one
    // needs to be created to take over in the pool for the one that closed.
    this.createSocket(pending, function(socket) {
      pending.request.onSocket(socket)
    })
  }
}

function createSecureSocket(options, cb) {
  var self = this
  TunnelingAgent.prototype.createSocket.call(self, options, function(socket) {
    // 0 is dummy port for v0.6
    var secureSocket = tls.connect(0, mergeOptions({}, self.options, 
      { servername: options.host
      , socket: socket
      }
    ))
    cb(secureSocket)
  })
}


function mergeOptions(target) {
  for (var i = 1, len = arguments.length; i < len; ++i) {
    var overrides = arguments[i]
    if (typeof overrides === 'object') {
      var keys = Object.keys(overrides)
      for (var j = 0, keyLen = keys.length; j < keyLen; ++j) {
        var k = keys[j]
        if (overrides[k] !== undefined) {
          target[k] = overrides[k]
        }
      }
    }
  }
  return target
}


var debug
if (process.env.NODE_DEBUG && /\btunnel\b/.test(process.env.NODE_DEBUG)) {
  debug = function() {
    var args = Array.prototype.slice.call(arguments)
    if (typeof args[0] === 'string') {
      args[0] = 'TUNNEL: ' + args[0]
    } else {
      args.unshift('TUNNEL:')
    }
    console.error.apply(console, args)
  }
} else {
  debug = function() {}
}
exports.debug = debug // for test

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":381,"assert":162,"buffer":177,"events":375,"http":400,"https":376,"net":161,"tls":161,"util":410}],138:[function(require,module,exports){
(function (process,Buffer){
'use strict'

var http = require('http')
  , https = require('https')
  , url = require('url')
  , util = require('util')
  , stream = require('stream')
  , qs = require('qs')
  , querystring = require('querystring')
  , zlib = require('zlib')
  , helpers = require('./lib/helpers')
  , bl = require('bl')
  , hawk = require('hawk')
  , aws = require('aws-sign2')
  , httpSignature = require('http-signature')
  , mime = require('mime-types')
  , tunnel = require('tunnel-agent')
  , stringstream = require('stringstream')
  , caseless = require('caseless')
  , ForeverAgent = require('forever-agent')
  , FormData = require('form-data')
  , cookies = require('./lib/cookies')
  , copy = require('./lib/copy')
  , getProxyFromURI = require('./lib/getProxyFromURI')
  , Har = require('./lib/har').Har
  , Auth = require('./lib/auth').Auth
  , OAuth = require('./lib/oauth').OAuth
  , Multipart = require('./lib/multipart').Multipart
  , Redirect = require('./lib/redirect').Redirect

var safeStringify = helpers.safeStringify
  , isReadStream = helpers.isReadStream
  , toBase64 = helpers.toBase64
  , defer = helpers.defer
  , globalCookieJar = cookies.jar()


var globalPool = {}

var defaultProxyHeaderWhiteList = [
  'accept',
  'accept-charset',
  'accept-encoding',
  'accept-language',
  'accept-ranges',
  'cache-control',
  'content-encoding',
  'content-language',
  'content-length',
  'content-location',
  'content-md5',
  'content-range',
  'content-type',
  'connection',
  'date',
  'expect',
  'max-forwards',
  'pragma',
  'referer',
  'te',
  'transfer-encoding',
  'user-agent',
  'via'
]

var defaultProxyHeaderExclusiveList = [
  'proxy-authorization'
]

function filterForNonReserved(reserved, options) {
  // Filter out properties that are not reserved.
  // Reserved values are passed in at call site.

  var object = {}
  for (var i in options) {
    var notReserved = (reserved.indexOf(i) === -1)
    if (notReserved) {
      object[i] = options[i]
    }
  }
  return object
}

function filterOutReservedFunctions(reserved, options) {
  // Filter out properties that are functions and are reserved.
  // Reserved values are passed in at call site.

  var object = {}
  for (var i in options) {
    var isReserved = !(reserved.indexOf(i) === -1)
    var isFunction = (typeof options[i] === 'function')
    if (!(isReserved && isFunction)) {
      object[i] = options[i]
    }
  }
  return object

}

function constructProxyHost(uriObject) {
  var port = uriObject.portA
    , protocol = uriObject.protocol
    , proxyHost = uriObject.hostname + ':'

  if (port) {
    proxyHost += port
  } else if (protocol === 'https:') {
    proxyHost += '443'
  } else {
    proxyHost += '80'
  }

  return proxyHost
}

function constructProxyHeaderWhiteList(headers, proxyHeaderWhiteList) {
  var whiteList = proxyHeaderWhiteList
    .reduce(function (set, header) {
      set[header.toLowerCase()] = true
      return set
    }, {})

  return Object.keys(headers)
    .filter(function (header) {
      return whiteList[header.toLowerCase()]
    })
    .reduce(function (set, header) {
      set[header] = headers[header]
      return set
    }, {})
}

function getTunnelOption(self, options) {
  // Tunnel HTTPS by default, or if a previous request in the redirect chain
  // was tunneled.  Allow the user to override this setting.

  // If self.tunnel is already set (because this is a redirect), use the
  // existing value.
  if (typeof self.tunnel !== 'undefined') {
    return self.tunnel
  }

  // If options.tunnel is set (the user specified a value), use it.
  if (typeof options.tunnel !== 'undefined') {
    return options.tunnel
  }

  // If the destination is HTTPS, tunnel.
  if (self.uri.protocol === 'https:') {
    return true
  }

  // Otherwise, leave tunnel unset, because if a later request in the redirect
  // chain is HTTPS then that request (and any subsequent ones) should be
  // tunneled.
  return undefined
}

function constructTunnelOptions(request) {
  var proxy = request.proxy

  var tunnelOptions = {
    proxy : {
      host      : proxy.hostname,
      port      : +proxy.port,
      proxyAuth : proxy.auth,
      headers   : request.proxyHeaders
    },
    headers            : request.headers,
    ca                 : request.ca,
    cert               : request.cert,
    key                : request.key,
    passphrase         : request.passphrase,
    pfx                : request.pfx,
    ciphers            : request.ciphers,
    rejectUnauthorized : request.rejectUnauthorized,
    secureOptions      : request.secureOptions,
    secureProtocol     : request.secureProtocol
  }

  return tunnelOptions
}

function constructTunnelFnName(uri, proxy) {
  var uriProtocol = (uri.protocol === 'https:' ? 'https' : 'http')
  var proxyProtocol = (proxy.protocol === 'https:' ? 'Https' : 'Http')
  return [uriProtocol, proxyProtocol].join('Over')
}

function getTunnelFn(request) {
  var uri = request.uri
  var proxy = request.proxy
  var tunnelFnName = constructTunnelFnName(uri, proxy)
  return tunnel[tunnelFnName]
}

// Function for properly handling a connection error
function connectionErrorHandler(error) {
  var socket = this
  if (socket.res) {
    if (socket.res.request) {
      socket.res.request.emit('error', error)
    } else {
      socket.res.emit('error', error)
    }
  } else {
    socket._httpMessage.emit('error', error)
  }
}

// Return a simpler request object to allow serialization
function requestToJSON() {
  var self = this
  return {
    uri: self.uri,
    method: self.method,
    headers: self.headers
  }
}

// Return a simpler response object to allow serialization
function responseToJSON() {
  var self = this
  return {
    statusCode: self.statusCode,
    body: self.body,
    headers: self.headers,
    request: requestToJSON.call(self.request)
  }
}

// encode rfc3986 characters
function rfc3986 (str) {
  return str.replace(/[!'()*]/g, function(c) {
    return '%' + c.charCodeAt(0).toString(16).toUpperCase()
  })
}

function Request (options) {
  // if given the method property in options, set property explicitMethod to true

  // extend the Request instance with any non-reserved properties
  // remove any reserved functions from the options object
  // set Request instance to be readable and writable
  // call init

  var self = this

  // start with HAR, then override with additional options
  if (options.har) {
    self._har = new Har(self)
    options = self._har.options(options)
  }

  stream.Stream.call(self)
  var reserved = Object.keys(Request.prototype)
  var nonReserved = filterForNonReserved(reserved, options)

  stream.Stream.call(self)
  util._extend(self, nonReserved)
  options = filterOutReservedFunctions(reserved, options)

  self.readable = true
  self.writable = true
  if (options.method) {
    self.explicitMethod = true
  }
  self._auth = new Auth(self)
  self._oauth = new OAuth(self)
  self._multipart = new Multipart(self)
  self._redirect = new Redirect(self)
  self.init(options)
}

util.inherits(Request, stream.Stream)

// Debugging
Request.debug = process.env.NODE_DEBUG && /\brequest\b/.test(process.env.NODE_DEBUG)
function debug() {
  if (Request.debug) {
    console.error('REQUEST %s', util.format.apply(util, arguments))
  }
}

Request.prototype.setupTunnel = function () {
  var self = this

  if (typeof self.proxy === 'string') {
    self.proxy = url.parse(self.proxy)
  }

  if (!self.proxy || !self.tunnel) {
    return false
  }

  // Setup Proxy Header Exclusive List and White List
  self.proxyHeaderExclusiveList = self.proxyHeaderExclusiveList || []
  self.proxyHeaderWhiteList = self.proxyHeaderWhiteList || defaultProxyHeaderWhiteList
  var proxyHeaderExclusiveList = self.proxyHeaderExclusiveList.concat(defaultProxyHeaderExclusiveList)
  var proxyHeaderWhiteList = self.proxyHeaderWhiteList.concat(proxyHeaderExclusiveList)

  // Setup Proxy Headers and Proxy Headers Host
  // Only send the Proxy White Listed Header names
  self.proxyHeaders = constructProxyHeaderWhiteList(self.headers, proxyHeaderWhiteList)
  self.proxyHeaders.host = constructProxyHost(self.uri)
  proxyHeaderExclusiveList.forEach(self.removeHeader, self)

  // Set Agent from Tunnel Data
  var tunnelFn = getTunnelFn(self)
  var tunnelOptions = constructTunnelOptions(self)
  self.agent = tunnelFn(tunnelOptions)

  return true
}

Request.prototype.init = function (options) {
  // init() contains all the code to setup the request object.
  // the actual outgoing request is not started until start() is called
  // this function is called from both the constructor and on redirect.
  var self = this
  if (!options) {
    options = {}
  }
  self.headers = self.headers ? copy(self.headers) : {}

  // Delete headers with value undefined since they break
  // ClientRequest.OutgoingMessage.setHeader in node 0.12
  for (var headerName in self.headers) {
    if (typeof self.headers[headerName] === 'undefined') {
      delete self.headers[headerName]
    }
  }

  caseless.httpify(self, self.headers)

  if (!self.method) {
    self.method = options.method || 'GET'
  }
  if (!self.localAddress) {
    self.localAddress = options.localAddress
  }

  if (!self.qsLib) {
    self.qsLib = (options.useQuerystring ? querystring : qs)
  }
  if (!self.qsParseOptions) {
    self.qsParseOptions = options.qsParseOptions
  }
  if (!self.qsStringifyOptions) {
    self.qsStringifyOptions = options.qsStringifyOptions
  }

  debug(options)
  if (!self.pool && self.pool !== false) {
    self.pool = globalPool
  }
  self.dests = self.dests || []
  self.__isRequestRequest = true

  // Protect against double callback
  if (!self._callback && self.callback) {
    self._callback = self.callback
    self.callback = function () {
      if (self._callbackCalled) {
        return // Print a warning maybe?
      }
      self._callbackCalled = true
      self._callback.apply(self, arguments)
    }
    self.on('error', self.callback.bind())
    self.on('complete', self.callback.bind(self, null))
  }

  // People use this property instead all the time, so support it
  if (!self.uri && self.url) {
    self.uri = self.url
    delete self.url
  }

  // If there's a baseUrl, then use it as the base URL (i.e. uri must be
  // specified as a relative path and is appended to baseUrl).
  if (self.baseUrl) {
    if (typeof self.baseUrl !== 'string') {
      return self.emit('error', new Error('options.baseUrl must be a string'))
    }

    if (typeof self.uri !== 'string') {
      return self.emit('error', new Error('options.uri must be a string when using options.baseUrl'))
    }

    if (self.uri.indexOf('//') === 0 || self.uri.indexOf('://') !== -1) {
      return self.emit('error', new Error('options.uri must be a path when using options.baseUrl'))
    }

    // Handle all cases to make sure that there's only one slash between
    // baseUrl and uri.
    var baseUrlEndsWithSlash = self.baseUrl.lastIndexOf('/') === self.baseUrl.length - 1
    var uriStartsWithSlash = self.uri.indexOf('/') === 0

    if (baseUrlEndsWithSlash && uriStartsWithSlash) {
      self.uri = self.baseUrl + self.uri.slice(1)
    } else if (baseUrlEndsWithSlash || uriStartsWithSlash) {
      self.uri = self.baseUrl + self.uri
    } else if (self.uri === '') {
      self.uri = self.baseUrl
    } else {
      self.uri = self.baseUrl + '/' + self.uri
    }
    delete self.baseUrl
  }

  // A URI is needed by this point, throw if we haven't been able to get one
  if (!self.uri) {
    return self.emit('error', new Error('options.uri is a required argument'))
  }

  // If a string URI/URL was given, parse it into a URL object
  if(typeof self.uri === 'string') {
    self.uri = url.parse(self.uri)
  }

  // DEPRECATED: Warning for users of the old Unix Sockets URL Scheme
  if (self.uri.protocol === 'unix:') {
    return self.emit('error', new Error('`unix://` URL scheme is no longer supported. Please use the format `http://unix:SOCKET:PATH`'))
  }

  // Support Unix Sockets
  if(self.uri.host === 'unix') {
    // Get the socket & request paths from the URL
    var unixParts = self.uri.path.split(':')
      , host = unixParts[0]
      , path = unixParts[1]
    // Apply unix properties to request
    self.socketPath = host
    self.uri.pathname = path
    self.uri.path = path
    self.uri.host = host
    self.uri.hostname = host
    self.uri.isUnix = true
  }

  if (self.strictSSL === false) {
    self.rejectUnauthorized = false
  }

  if(!self.hasOwnProperty('proxy')) {
    self.proxy = getProxyFromURI(self.uri)
  }

  self.tunnel = getTunnelOption(self, options)
  if (self.proxy) {
    self.setupTunnel()
  }

  if (!self.uri.pathname) {self.uri.pathname = '/'}

  if (!(self.uri.host || (self.uri.hostname && self.uri.port)) && !self.uri.isUnix) {
    // Invalid URI: it may generate lot of bad errors, like 'TypeError: Cannot call method `indexOf` of undefined' in CookieJar
    // Detect and reject it as soon as possible
    var faultyUri = url.format(self.uri)
    var message = 'Invalid URI "' + faultyUri + '"'
    if (Object.keys(options).length === 0) {
      // No option ? This can be the sign of a redirect
      // As this is a case where the user cannot do anything (they didn't call request directly with this URL)
      // they should be warned that it can be caused by a redirection (can save some hair)
      message += '. This can be caused by a crappy redirection.'
    }
    // This error was fatal
    return self.emit('error', new Error(message))
  }

  self._redirect.onRequest()

  self.setHost = false
  if (!self.hasHeader('host')) {
    var hostHeaderName = self.originalHostHeaderName || 'host'
    self.setHeader(hostHeaderName, self.uri.hostname)
    if (self.uri.port) {
      if ( !(self.uri.port === 80 && self.uri.protocol === 'http:') &&
           !(self.uri.port === 443 && self.uri.protocol === 'https:') ) {
        self.setHeader(hostHeaderName, self.getHeader('host') + (':' + self.uri.port) )
      }
    }
    self.setHost = true
  }

  self.jar(self._jar || options.jar)

  if (!self.uri.port) {
    if (self.uri.protocol === 'http:') {self.uri.port = 80}
    else if (self.uri.protocol === 'https:') {self.uri.port = 443}
  }

  if (self.proxy && !self.tunnel) {
    self.port = self.proxy.port
    self.host = self.proxy.hostname
  } else {
    self.port = self.uri.port
    self.host = self.uri.hostname
  }

  if (options.form) {
    self.form(options.form)
  }

  if (options.formData) {
    var formData = options.formData
    var requestForm = self.form()
    var appendFormValue = function (key, value) {
      if (value.hasOwnProperty('value') && value.hasOwnProperty('options')) {
        requestForm.append(key, value.value, value.options)
      } else {
        requestForm.append(key, value)
      }
    }
    for (var formKey in formData) {
      if (formData.hasOwnProperty(formKey)) {
        var formValue = formData[formKey]
        if (formValue instanceof Array) {
          for (var j = 0; j < formValue.length; j++) {
            appendFormValue(formKey, formValue[j])
          }
        } else {
          appendFormValue(formKey, formValue)
        }
      }
    }
  }

  if (options.qs) {
    self.qs(options.qs)
  }

  if (self.uri.path) {
    self.path = self.uri.path
  } else {
    self.path = self.uri.pathname + (self.uri.search || '')
  }

  if (self.path.length === 0) {
    self.path = '/'
  }

  // Auth must happen last in case signing is dependent on other headers
  if (options.oauth) {
    self.oauth(options.oauth)
  }

  if (options.aws) {
    self.aws(options.aws)
  }

  if (options.hawk) {
    self.hawk(options.hawk)
  }

  if (options.httpSignature) {
    self.httpSignature(options.httpSignature)
  }

  if (options.auth) {
    if (Object.prototype.hasOwnProperty.call(options.auth, 'username')) {
      options.auth.user = options.auth.username
    }
    if (Object.prototype.hasOwnProperty.call(options.auth, 'password')) {
      options.auth.pass = options.auth.password
    }

    self.auth(
      options.auth.user,
      options.auth.pass,
      options.auth.sendImmediately,
      options.auth.bearer
    )
  }

  if (self.gzip && !self.hasHeader('accept-encoding')) {
    self.setHeader('accept-encoding', 'gzip')
  }

  if (self.uri.auth && !self.hasHeader('authorization')) {
    var uriAuthPieces = self.uri.auth.split(':').map(function(item){ return querystring.unescape(item) })
    self.auth(uriAuthPieces[0], uriAuthPieces.slice(1).join(':'), true)
  }

  if (!self.tunnel && self.proxy && self.proxy.auth && !self.hasHeader('proxy-authorization')) {
    var proxyAuthPieces = self.proxy.auth.split(':').map(function(item){
      return querystring.unescape(item)
    })
    var authHeader = 'Basic ' + toBase64(proxyAuthPieces.join(':'))
    self.setHeader('proxy-authorization', authHeader)
  }

  if (self.proxy && !self.tunnel) {
    self.path = (self.uri.protocol + '//' + self.uri.host + self.path)
  }

  if (options.json) {
    self.json(options.json)
  }
  if (options.multipart) {
    self.multipart(options.multipart)
  }

  if (options.time) {
    self.timing = true
    self.elapsedTime = self.elapsedTime || 0
  }

  if (self.body) {
    var length = 0
    if (!Buffer.isBuffer(self.body)) {
      if (Array.isArray(self.body)) {
        for (var i = 0; i < self.body.length; i++) {
          length += self.body[i].length
        }
      } else {
        self.body = new Buffer(self.body)
        length = self.body.length
      }
    } else {
      length = self.body.length
    }
    if (length) {
      if (!self.hasHeader('content-length')) {
        self.setHeader('content-length', length)
      }
    } else {
      throw new Error('Argument error, options.body.')
    }
  }

  var protocol = self.proxy && !self.tunnel ? self.proxy.protocol : self.uri.protocol
    , defaultModules = {'http:':http, 'https:':https}
    , httpModules = self.httpModules || {}

  self.httpModule = httpModules[protocol] || defaultModules[protocol]

  if (!self.httpModule) {
    return self.emit('error', new Error('Invalid protocol: ' + protocol))
  }

  if (options.ca) {
    self.ca = options.ca
  }

  if (!self.agent) {
    if (options.agentOptions) {
      self.agentOptions = options.agentOptions
    }

    if (options.agentClass) {
      self.agentClass = options.agentClass
    } else if (options.forever) {
      self.agentClass = protocol === 'http:' ? ForeverAgent : ForeverAgent.SSL
    } else {
      self.agentClass = self.httpModule.Agent
    }
  }

  if (self.pool === false) {
    self.agent = false
  } else {
    self.agent = self.agent || self.getNewAgent()
  }

  self.on('pipe', function (src) {
    if (self.ntick && self._started) {
      throw new Error('You cannot pipe to this stream after the outbound request has started.')
    }
    self.src = src
    if (isReadStream(src)) {
      if (!self.hasHeader('content-type')) {
        self.setHeader('content-type', mime.lookup(src.path))
      }
    } else {
      if (src.headers) {
        for (var i in src.headers) {
          if (!self.hasHeader(i)) {
            self.setHeader(i, src.headers[i])
          }
        }
      }
      if (self._json && !self.hasHeader('content-type')) {
        self.setHeader('content-type', 'application/json')
      }
      if (src.method && !self.explicitMethod) {
        self.method = src.method
      }
    }

    // self.on('pipe', function () {
    //   console.error('You have already piped to this stream. Pipeing twice is likely to break the request.')
    // })
  })

  defer(function () {
    if (self._aborted) {
      return
    }

    var end = function () {
      if (self._form) {
        if (!self._auth.hasAuth) {
          self._form.pipe(self)
        }
        else if (self._auth.hasAuth && self._auth.sentAuth) {
          self._form.pipe(self)
        }
      }
      if (self._multipart && self._multipart.chunked) {
        self._multipart.body.pipe(self)
      }
      if (self.body) {
        if (Array.isArray(self.body)) {
          self.body.forEach(function (part) {
            self.write(part)
          })
        } else {
          self.write(self.body)
        }
        self.end()
      } else if (self.requestBodyStream) {
        console.warn('options.requestBodyStream is deprecated, please pass the request object to stream.pipe.')
        self.requestBodyStream.pipe(self)
      } else if (!self.src) {
        if (self._auth.hasAuth && !self._auth.sentAuth) {
          self.end()
          return
        }
        if (self.method !== 'GET' && typeof self.method !== 'undefined') {
          self.setHeader('content-length', 0)
        }
        self.end()
      }
    }

    if (self._form && !self.hasHeader('content-length')) {
      // Before ending the request, we had to compute the length of the whole form, asyncly
      self.setHeader(self._form.getHeaders())
      self._form.getLength(function (err, length) {
        if (!err) {
          self.setHeader('content-length', length)
        }
        end()
      })
    } else {
      end()
    }

    self.ntick = true
  })

}

// Must call this when following a redirect from https to http or vice versa
// Attempts to keep everything as identical as possible, but update the
// httpModule, Tunneling agent, and/or Forever Agent in use.
Request.prototype._updateProtocol = function () {
  var self = this
  var protocol = self.uri.protocol

  if (protocol === 'https:' || self.tunnel) {
    // previously was doing http, now doing https
    // if it's https, then we might need to tunnel now.
    if (self.proxy) {
      if (self.setupTunnel()) {
        return
      }
    }

    self.httpModule = https
    switch (self.agentClass) {
      case ForeverAgent:
        self.agentClass = ForeverAgent.SSL
        break
      case http.Agent:
        self.agentClass = https.Agent
        break
      default:
        // nothing we can do.  Just hope for the best.
        return
    }

    // if there's an agent, we need to get a new one.
    if (self.agent) {
      self.agent = self.getNewAgent()
    }

  } else {
    // previously was doing https, now doing http
    self.httpModule = http
    switch (self.agentClass) {
      case ForeverAgent.SSL:
        self.agentClass = ForeverAgent
        break
      case https.Agent:
        self.agentClass = http.Agent
        break
      default:
        // nothing we can do.  just hope for the best
        return
    }

    // if there's an agent, then get a new one.
    if (self.agent) {
      self.agent = null
      self.agent = self.getNewAgent()
    }
  }
}

Request.prototype.getNewAgent = function () {
  var self = this
  var Agent = self.agentClass
  var options = {}
  if (self.agentOptions) {
    for (var i in self.agentOptions) {
      options[i] = self.agentOptions[i]
    }
  }
  if (self.ca) {
    options.ca = self.ca
  }
  if (self.ciphers) {
    options.ciphers = self.ciphers
  }
  if (self.secureProtocol) {
    options.secureProtocol = self.secureProtocol
  }
  if (self.secureOptions) {
    options.secureOptions = self.secureOptions
  }
  if (typeof self.rejectUnauthorized !== 'undefined') {
    options.rejectUnauthorized = self.rejectUnauthorized
  }

  if (self.cert && self.key) {
    options.key = self.key
    options.cert = self.cert
  }

  if (self.pfx) {
    options.pfx = self.pfx
  }

  if (self.passphrase) {
    options.passphrase = self.passphrase
  }

  var poolKey = ''

  // different types of agents are in different pools
  if (Agent !== self.httpModule.Agent) {
    poolKey += Agent.name
  }

  // ca option is only relevant if proxy or destination are https
  var proxy = self.proxy
  if (typeof proxy === 'string') {
    proxy = url.parse(proxy)
  }
  var isHttps = (proxy && proxy.protocol === 'https:') || this.uri.protocol === 'https:'

  if (isHttps) {
    if (options.ca) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.ca
    }

    if (typeof options.rejectUnauthorized !== 'undefined') {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.rejectUnauthorized
    }

    if (options.cert) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.cert.toString('ascii') + options.key.toString('ascii')
    }

    if (options.pfx) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.pfx.toString('ascii')
    }

    if (options.ciphers) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.ciphers
    }

    if (options.secureProtocol) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.secureProtocol
    }

    if (options.secureOptions) {
      if (poolKey) {
        poolKey += ':'
      }
      poolKey += options.secureOptions
    }
  }

  if (self.pool === globalPool && !poolKey && Object.keys(options).length === 0 && self.httpModule.globalAgent) {
    // not doing anything special.  Use the globalAgent
    return self.httpModule.globalAgent
  }

  // we're using a stored agent.  Make sure it's protocol-specific
  poolKey = self.uri.protocol + poolKey

  // generate a new agent for this setting if none yet exists
  if (!self.pool[poolKey]) {
    self.pool[poolKey] = new Agent(options)
    // properly set maxSockets on new agents
    if (self.pool.maxSockets) {
      self.pool[poolKey].maxSockets = self.pool.maxSockets
    }
  }

  return self.pool[poolKey]
}

Request.prototype.start = function () {
  // start() is called once we are ready to send the outgoing HTTP request.
  // this is usually called on the first write(), end() or on nextTick()
  var self = this

  if (self._aborted) {
    return
  }

  self._started = true
  self.method = self.method || 'GET'
  self.href = self.uri.href

  if (self.src && self.src.stat && self.src.stat.size && !self.hasHeader('content-length')) {
    self.setHeader('content-length', self.src.stat.size)
  }
  if (self._aws) {
    self.aws(self._aws, true)
  }

  // We have a method named auth, which is completely different from the http.request
  // auth option.  If we don't remove it, we're gonna have a bad time.
  var reqOptions = copy(self)
  delete reqOptions.auth

  debug('make request', self.uri.href)

  self.req = self.httpModule.request(reqOptions)

  if (self.timing) {
    self.startTime = new Date().getTime()
  }

  if (self.timeout && !self.timeoutTimer) {
    var timeout = self.timeout < 0 ? 0 : self.timeout
    self.timeoutTimer = setTimeout(function () {
      self.abort()
      var e = new Error('ETIMEDOUT')
      e.code = 'ETIMEDOUT'
      self.emit('error', e)
    }, timeout)

    // Set additional timeout on socket - in case if remote
    // server freeze after sending headers
    if (self.req.setTimeout) { // only works on node 0.6+
      self.req.setTimeout(timeout, function () {
        if (self.req) {
          self.req.abort()
          var e = new Error('ESOCKETTIMEDOUT')
          e.code = 'ESOCKETTIMEDOUT'
          self.emit('error', e)
        }
      })
    }
  }

  self.req.on('response', self.onRequestResponse.bind(self))
  self.req.on('error', self.onRequestError.bind(self))
  self.req.on('drain', function() {
    self.emit('drain')
  })
  self.req.on('socket', function(socket) {
    self.emit('socket', socket)
  })

  self.on('end', function() {
    if ( self.req.connection ) {
      self.req.connection.removeListener('error', connectionErrorHandler)
    }
  })
  self.emit('request', self.req)
}

Request.prototype.onRequestError = function (error) {
  var self = this
  if (self._aborted) {
    return
  }
  if (self.req && self.req._reusedSocket && error.code === 'ECONNRESET'
      && self.agent.addRequestNoreuse) {
    self.agent = { addRequest: self.agent.addRequestNoreuse.bind(self.agent) }
    self.start()
    self.req.end()
    return
  }
  if (self.timeout && self.timeoutTimer) {
    clearTimeout(self.timeoutTimer)
    self.timeoutTimer = null
  }
  self.emit('error', error)
}

Request.prototype.onRequestResponse = function (response) {
  var self = this
  debug('onRequestResponse', self.uri.href, response.statusCode, response.headers)
  response.on('end', function() {
    if (self.timing) {
      self.elapsedTime += (new Date().getTime() - self.startTime)
      debug('elapsed time', self.elapsedTime)
      response.elapsedTime = self.elapsedTime
    }
    debug('response end', self.uri.href, response.statusCode, response.headers)
  })

  // The check on response.connection is a workaround for browserify.
  if (response.connection && response.connection.listeners('error').indexOf(connectionErrorHandler) === -1) {
    response.connection.setMaxListeners(0)
    response.connection.once('error', connectionErrorHandler)
  }
  if (self._aborted) {
    debug('aborted', self.uri.href)
    response.resume()
    return
  }
  if (self._paused) {
    response.pause()
  } else if (response.resume) {
    // response.resume should be defined, but check anyway before calling. Workaround for browserify.
    response.resume()
  }

  self.response = response
  response.request = self
  response.toJSON = responseToJSON

  // XXX This is different on 0.10, because SSL is strict by default
  if (self.httpModule === https &&
      self.strictSSL && (!response.hasOwnProperty('client') ||
      !response.client.authorized)) {
    debug('strict ssl error', self.uri.href)
    var sslErr = response.hasOwnProperty('client') ? response.client.authorizationError : self.uri.href + ' does not support SSL'
    self.emit('error', new Error('SSL Error: ' + sslErr))
    return
  }

  // Save the original host before any redirect (if it changes, we need to
  // remove any authorization headers).  Also remember the case of the header
  // name because lots of broken servers expect Host instead of host and we
  // want the caller to be able to specify this.
  self.originalHost = self.getHeader('host')
  if (!self.originalHostHeaderName) {
    self.originalHostHeaderName = self.hasHeader('host')
  }
  if (self.setHost) {
    self.removeHeader('host')
  }
  if (self.timeout && self.timeoutTimer) {
    clearTimeout(self.timeoutTimer)
    self.timeoutTimer = null
  }

  var targetCookieJar = (self._jar && self._jar.setCookie) ? self._jar : globalCookieJar
  var addCookie = function (cookie) {
    //set the cookie if it's domain in the href's domain.
    try {
      targetCookieJar.setCookie(cookie, self.uri.href, {ignoreError: true})
    } catch (e) {
      self.emit('error', e)
    }
  }

  response.caseless = caseless(response.headers)

  if (response.caseless.has('set-cookie') && (!self._disableCookies)) {
    var headerName = response.caseless.has('set-cookie')
    if (Array.isArray(response.headers[headerName])) {
      response.headers[headerName].forEach(addCookie)
    } else {
      addCookie(response.headers[headerName])
    }
  }

  if (self._redirect.onResponse(response)) {
    return // Ignore the rest of the response
  } else {
    // Be a good stream and emit end when the response is finished.
    // Hack to emit end on close because of a core bug that never fires end
    response.on('close', function () {
      if (!self._ended) {
        self.response.emit('end')
      }
    })

    response.on('end', function () {
      self._ended = true
    })

    var dataStream
    if (self.gzip) {
      var contentEncoding = response.headers['content-encoding'] || 'identity'
      contentEncoding = contentEncoding.trim().toLowerCase()

      if (contentEncoding === 'gzip') {
        dataStream = zlib.createGunzip()
        response.pipe(dataStream)
      } else {
        // Since previous versions didn't check for Content-Encoding header,
        // ignore any invalid values to preserve backwards-compatibility
        if (contentEncoding !== 'identity') {
          debug('ignoring unrecognized Content-Encoding ' + contentEncoding)
        }
        dataStream = response
      }
    } else {
      dataStream = response
    }

    if (self.encoding) {
      if (self.dests.length !== 0) {
        console.error('Ignoring encoding parameter as this stream is being piped to another stream which makes the encoding option invalid.')
      } else if (dataStream.setEncoding) {
        dataStream.setEncoding(self.encoding)
      } else {
        // Should only occur on node pre-v0.9.4 (joyent/node@9b5abe5) with
        // zlib streams.
        // If/When support for 0.9.4 is dropped, this should be unnecessary.
        dataStream = dataStream.pipe(stringstream(self.encoding))
      }
    }

    self.emit('response', response)

    self.dests.forEach(function (dest) {
      self.pipeDest(dest)
    })

    dataStream.on('data', function (chunk) {
      self._destdata = true
      self.emit('data', chunk)
    })
    dataStream.on('end', function (chunk) {
      self.emit('end', chunk)
    })
    dataStream.on('error', function (error) {
      self.emit('error', error)
    })
    dataStream.on('close', function () {self.emit('close')})

    if (self.callback) {
      var buffer = bl()
        , strings = []

      self.on('data', function (chunk) {
        if (Buffer.isBuffer(chunk)) {
          buffer.append(chunk)
        } else {
          strings.push(chunk)
        }
      })
      self.on('end', function () {
        debug('end event', self.uri.href)
        if (self._aborted) {
          debug('aborted', self.uri.href)
          return
        }

        if (buffer.length) {
          debug('has body', self.uri.href, buffer.length)
          if (self.encoding === null) {
            // response.body = buffer
            // can't move to this until https://github.com/rvagg/bl/issues/13
            response.body = buffer.slice()
          } else {
            response.body = buffer.toString(self.encoding)
          }
        } else if (strings.length) {
          // The UTF8 BOM [0xEF,0xBB,0xBF] is converted to [0xFE,0xFF] in the JS UTC16/UCS2 representation.
          // Strip this value out when the encoding is set to 'utf8', as upstream consumers won't expect it and it breaks JSON.parse().
          if (self.encoding === 'utf8' && strings[0].length > 0 && strings[0][0] === '\uFEFF') {
            strings[0] = strings[0].substring(1)
          }
          response.body = strings.join('')
        }

        if (self._json) {
          try {
            response.body = JSON.parse(response.body, self._jsonReviver)
          } catch (e) {}
        }
        debug('emitting complete', self.uri.href)
        if(typeof response.body === 'undefined' && !self._json) {
          response.body = self.encoding === null ? new Buffer(0) : ''
        }
        self.emit('complete', response, response.body)
      })
    }
    //if no callback
    else{
      self.on('end', function () {
        if (self._aborted) {
          debug('aborted', self.uri.href)
          return
        }
        self.emit('complete', response)
      })
    }
  }
  debug('finish init function', self.uri.href)
}

Request.prototype.abort = function () {
  var self = this
  self._aborted = true

  if (self.req) {
    self.req.abort()
  }
  else if (self.response) {
    self.response.abort()
  }

  self.emit('abort')
}

Request.prototype.pipeDest = function (dest) {
  var self = this
  var response = self.response
  // Called after the response is received
  if (dest.headers && !dest.headersSent) {
    if (response.caseless.has('content-type')) {
      var ctname = response.caseless.has('content-type')
      if (dest.setHeader) {
        dest.setHeader(ctname, response.headers[ctname])
      }
      else {
        dest.headers[ctname] = response.headers[ctname]
      }
    }

    if (response.caseless.has('content-length')) {
      var clname = response.caseless.has('content-length')
      if (dest.setHeader) {
        dest.setHeader(clname, response.headers[clname])
      } else {
        dest.headers[clname] = response.headers[clname]
      }
    }
  }
  if (dest.setHeader && !dest.headersSent) {
    for (var i in response.headers) {
      // If the response content is being decoded, the Content-Encoding header
      // of the response doesn't represent the piped content, so don't pass it.
      if (!self.gzip || i !== 'content-encoding') {
        dest.setHeader(i, response.headers[i])
      }
    }
    dest.statusCode = response.statusCode
  }
  if (self.pipefilter) {
    self.pipefilter(response, dest)
  }
}

Request.prototype.qs = function (q, clobber) {
  var self = this
  var base
  if (!clobber && self.uri.query) {
    base = self.qsLib.parse(self.uri.query, self.qsParseOptions)
  } else {
    base = {}
  }

  for (var i in q) {
    base[i] = q[i]
  }

  if (self.qsLib.stringify(base, self.qsStringifyOptions) === ''){
    return self
  }

  var qs = self.qsLib.stringify(base, self.qsStringifyOptions)

  self.uri = url.parse(self.uri.href.split('?')[0] + '?' + rfc3986(qs))
  self.url = self.uri
  self.path = self.uri.path

  return self
}
Request.prototype.form = function (form) {
  var self = this
  if (form) {
    self.setHeader('content-type', 'application/x-www-form-urlencoded')
    self.body = (typeof form === 'string')
      ? form.toString('utf8')
      : self.qsLib.stringify(form, self.qsStringifyOptions).toString('utf8')
    self.body = rfc3986(self.body)
    return self
  }
  // create form-data object
  self._form = new FormData()
  self._form.on('error', function(err) {
    err.message = 'form-data: ' + err.message
    self.emit('error', err)
    self.abort()
  })
  return self._form
}
Request.prototype.multipart = function (multipart) {
  var self = this

  self._multipart.onRequest(multipart)

  if (!self._multipart.chunked) {
    self.body = self._multipart.body
  }

  return self
}
Request.prototype.json = function (val) {
  var self = this

  if (!self.hasHeader('accept')) {
    self.setHeader('accept', 'application/json')
  }

  self._json = true
  if (typeof val === 'boolean') {
    if (self.body !== undefined) {
      if (!/^application\/x-www-form-urlencoded\b/.test(self.getHeader('content-type'))) {
        self.body = safeStringify(self.body)
      } else {
        self.body = rfc3986(self.body)
      }
      if (!self.hasHeader('content-type')) {
        self.setHeader('content-type', 'application/json')
      }
    }
  } else {
    self.body = safeStringify(val)
    if (!self.hasHeader('content-type')) {
      self.setHeader('content-type', 'application/json')
    }
  }

  if (typeof self.jsonReviver === 'function') {
    self._jsonReviver = self.jsonReviver
  }

  return self
}
Request.prototype.getHeader = function (name, headers) {
  var self = this
  var result, re, match
  if (!headers) {
    headers = self.headers
  }
  Object.keys(headers).forEach(function (key) {
    if (key.length !== name.length) {
      return
    }
    re = new RegExp(name, 'i')
    match = key.match(re)
    if (match) {
      result = headers[key]
    }
  })
  return result
}

Request.prototype.auth = function (user, pass, sendImmediately, bearer) {
  var self = this

  self._auth.onRequest(user, pass, sendImmediately, bearer)

  return self
}
Request.prototype.aws = function (opts, now) {
  var self = this

  if (!now) {
    self._aws = opts
    return self
  }
  var date = new Date()
  self.setHeader('date', date.toUTCString())
  var auth =
    { key: opts.key
    , secret: opts.secret
    , verb: self.method.toUpperCase()
    , date: date
    , contentType: self.getHeader('content-type') || ''
    , md5: self.getHeader('content-md5') || ''
    , amazonHeaders: aws.canonicalizeHeaders(self.headers)
    }
  var path = self.uri.path
  if (opts.bucket && path) {
    auth.resource = '/' + opts.bucket + path
  } else if (opts.bucket && !path) {
    auth.resource = '/' + opts.bucket
  } else if (!opts.bucket && path) {
    auth.resource = path
  } else if (!opts.bucket && !path) {
    auth.resource = '/'
  }
  auth.resource = aws.canonicalizeResource(auth.resource)
  self.setHeader('authorization', aws.authorization(auth))

  return self
}
Request.prototype.httpSignature = function (opts) {
  var self = this
  httpSignature.signRequest({
    getHeader: function(header) {
      return self.getHeader(header, self.headers)
    },
    setHeader: function(header, value) {
      self.setHeader(header, value)
    },
    method: self.method,
    path: self.path
  }, opts)
  debug('httpSignature authorization', self.getHeader('authorization'))

  return self
}
Request.prototype.hawk = function (opts) {
  var self = this
  self.setHeader('Authorization', hawk.client.header(self.uri, self.method, opts).field)
}
Request.prototype.oauth = function (_oauth) {
  var self = this

  self._oauth.onRequest(_oauth)

  return self
}

Request.prototype.jar = function (jar) {
  var self = this
  var cookies

  if (self._redirect.redirectsFollowed === 0) {
    self.originalCookieHeader = self.getHeader('cookie')
  }

  if (!jar) {
    // disable cookies
    cookies = false
    self._disableCookies = true
  } else {
    var targetCookieJar = (jar && jar.getCookieString) ? jar : globalCookieJar
    var urihref = self.uri.href
    //fetch cookie in the Specified host
    if (targetCookieJar) {
      cookies = targetCookieJar.getCookieString(urihref)
    }
  }

  //if need cookie and cookie is not empty
  if (cookies && cookies.length) {
    if (self.originalCookieHeader) {
      // Don't overwrite existing Cookie header
      self.setHeader('cookie', self.originalCookieHeader + '; ' + cookies)
    } else {
      self.setHeader('cookie', cookies)
    }
  }
  self._jar = jar
  return self
}


// Stream API
Request.prototype.pipe = function (dest, opts) {
  var self = this

  if (self.response) {
    if (self._destdata) {
      throw new Error('You cannot pipe after data has been emitted from the response.')
    } else if (self._ended) {
      throw new Error('You cannot pipe after the response has been ended.')
    } else {
      stream.Stream.prototype.pipe.call(self, dest, opts)
      self.pipeDest(dest)
      return dest
    }
  } else {
    self.dests.push(dest)
    stream.Stream.prototype.pipe.call(self, dest, opts)
    return dest
  }
}
Request.prototype.write = function () {
  var self = this
  if (!self._started) {
    self.start()
  }
  return self.req.write.apply(self.req, arguments)
}
Request.prototype.end = function (chunk) {
  var self = this
  if (chunk) {
    self.write(chunk)
  }
  if (!self._started) {
    self.start()
  }
  self.req.end()
}
Request.prototype.pause = function () {
  var self = this
  if (!self.response) {
    self._paused = true
  } else {
    self.response.pause.apply(self.response, arguments)
  }
}
Request.prototype.resume = function () {
  var self = this
  if (!self.response) {
    self._paused = false
  } else {
    self.response.resume.apply(self.response, arguments)
  }
}
Request.prototype.destroy = function () {
  var self = this
  if (!self._ended) {
    self.end()
  } else if (self.response) {
    self.response.destroy()
  }
}

Request.defaultProxyHeaderWhiteList =
  defaultProxyHeaderWhiteList.slice()

Request.defaultProxyHeaderExclusiveList =
  defaultProxyHeaderExclusiveList.slice()

// Exports

Request.prototype.toJSON = requestToJSON
module.exports = Request

}).call(this,require('_process'),require("buffer").Buffer)
},{"./lib/auth":54,"./lib/cookies":55,"./lib/copy":56,"./lib/getProxyFromURI":57,"./lib/har":58,"./lib/helpers":59,"./lib/multipart":60,"./lib/oauth":61,"./lib/redirect":62,"_process":381,"aws-sign2":63,"bl":64,"buffer":177,"caseless":73,"forever-agent":76,"form-data":77,"hawk":104,"http":400,"http-signature":105,"https":376,"mime-types":122,"qs":127,"querystring":385,"stream":399,"stringstream":132,"tunnel-agent":137,"url":407,"util":410,"zlib":176}],139:[function(require,module,exports){
(function (Buffer){
var inherits = require('inherits');

var TwisterResource = require('../TwisterResource.js');
var TwisterPrivKey = require('./TwisterPrivKey.js');
var TwisterContentParser = require('./TwisterContentParser.js');

var bencode = require('bencode');


/**
 * Describes a user account in Twister. Allows for the private information about that user as well as for posting new messages.
 * @class ServerWallet_TwisterAccount
 */
function TwisterAccount(name,scope) {
    
	TwisterResource.call(this,name,scope);
	
    this._name = name;
    this._scope = scope;
	
    this._type = "account";
	this._hasParentUser = false;
    
	this._wallettype = "client";
	
	this._directmessages = {};
  
    this._torrents = {};
  
    this._privkey = new TwisterPrivKey(name,scope);

}

module.exports = TwisterAccount;

inherits(TwisterAccount,TwisterResource);

TwisterAccount.prototype.flatten = function () {
    
    var flatData = TwisterResource.prototype.flatten.call(this);

    flatData.wallettype = this._wallettype;
    
    flatData.directmessages = [];
    
    for (var username in this._directmessages){
        flatData.directmessages.push(this._directmessages[username].flatten());
    }
  
    flatData.torrents = [];
    
    for (var username in this._torrents){
        flatData.torrents.push(this._torrents[username].flatten());
    }
    
    flatData.privkey = this._privkey.flatten();
  
    return flatData;


}

TwisterAccount.prototype.inflate = function (flatData) {
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._wallettype = flatData.wallettype;
    this._privateFollowings = flatData.privateFollowings;

    var TwisterDirectMessages = require('./TwisterDirectMessages.js');
    var TwisterTorrent = require('./TwisterTorrent.js');

    for(var i in flatData.directmessages){

        var newuser = new TwisterDirectMessages(this._name,flatData.directmessages[i].name,Twister);
        newuser.inflate(flatData.directmessages[i]);
        this._directmessages[flatData.directmessages[i].name]=newuser;

    }

    for(var i in flatData.torrents){

        var newuser = new TwisterTorrent(this._name,flatData.torrents[i].name,Twister);
        newuser.inflate(flatData.torrents[i]);
        this._torrents[flatData.torrents[i].name]=newuser;

    }
  
    this._privkey.inflate(flatData.privkey);

}

TwisterAccount.prototype.trim = function (timestamp) {

  for (var username in this._directmessages){
    this._directmessages[username].trim(timestamp);
  }

  for (var username in this._torrents){
    this._torrents[username].trim(timestamp);
  }
  
}

TwisterAccount.prototype.getUsername = function () {return this._name}

TwisterAccount.prototype.verifyKey = function (cbfunc,querySettings) {

  this._privkey.verifyKey(cbfunc,querySettings);

}

TwisterAccount.prototype.getKeyStatus = function () {

  return this._privkey.getStatus();

}

TwisterAccount.prototype.activateTorrents = function (cbfunc,querySettings) {

	var Twister = this._scope;
    
    var thisAccount = this;

    //thisAccount.RPC("getlasthave", [ this._name ], function(res) {
        
    Twister.getUser(this._name).doFollowings(function(followings){
  
        var usernames = followings.map(function(fol){
          return fol.getUsername();
        })
      
        usernames.push(thisAccount._name);
              
        thisAccount.RPC("follow", [ "guest", usernames ], function(res) {
        
          for (var k in usernames) {

            var username = usernames[k];
            
            var resTorrent = thisAccount.getTorrent(username);

            resTorrent.activate();

            thisAccount._log("torrent for "+username+" activated");

          }

          cbfunc();
          
        }, function(ret) {
        
            thisAccount._handleError(ret);

        })
        
    });

}

TwisterAccount.prototype.activateTorrent = function (username,cbfunc,querySettings) {

	var Twister = this._scope;
    
    var thisAccount = this;

    thisAccount.RPC("follow", [ "guest", [username] ], function(res) {

      var resTorrent = thisAccount.getTorrent(username);

      resTorrent.activate();

      thisAccount._log("torrent for "+username+" activated");

      if(cbfunc) cbfunc();

    }, function(ret) {

        thisAccount._handleError(ret);

    })
        

}

TwisterAccount.prototype.unfollow = function (username,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  Twister.getUser(this._name).doFollowings(function(fols){
    
    var newfollowings = fols.map(function(fol){
      return fol.getUsername();
    }).filter(function(name){
      return name!=username;
    })
    
    var oldRevisionNumers = Twister.getUser(thisAccount._name)._followings._revisionNumber;
    
    thisAccount.updateFollowing(newfollowings,oldRevisionNumers,cbfunc)
    
  },{outdatedLimit: 0})

}

TwisterAccount.prototype.follow = function (username,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  Twister.getUser(this._name).doFollowings(function(fols){
    
    var newfollowings = fols.map(function(fol){
      return fol.getUsername();
    });
        
    if(newfollowings.indexOf(username)<0){
      newfollowings.push(username);
    }
    
    //console.log(newfollowings);
    
    var oldRevisionNumers = Twister.getUser(thisAccount._name)._followings._revisionNumber;
    
    console.log("oldrev:",oldRevisionNumers)
    
    thisAccount.updateFollowing(newfollowings,oldRevisionNumers,cbfunc)
    
  },{outdatedLimit: 0})

}

TwisterAccount.prototype.updateFollowing = function (newfollowings,oldRevsionNumbers,cbfunc) {
  
  var newfollowings = JSON.parse(JSON.stringify(newfollowings));
  var newfollowings_ori = JSON.parse(JSON.stringify(newfollowings));
  var oldRevsionNumbers = JSON.parse(JSON.stringify(oldRevsionNumbers));
  
  var thisAccount = this;
  
  var Twister = this._scope;
  
  var currentCounter = 1;

  var newRevNumbers = {};
  
  var putTilEmpty = function (cbfunc) {

      thisAccount.dhtget([thisAccount._name, "following"+currentCounter, "s"],

          function (result) {

              if ((result[0] && result[0].p.v[0])||newfollowings.length) {

                var charcount = 0;
                
                var folsforthisresource = [];
                
                while(newfollowings.length && charcount<4000){
                  
                  var nextfol = newfollowings.shift();
                  
                  charcount += nextfol.length + 3;
                  
                  folsforthisresource.push(nextfol);
                  
                }
                
                var seq = oldRevsionNumbers[currentCounter] ? oldRevsionNumbers[currentCounter]+1 : 1 ;
                
                thisAccount._dhtput(
                  thisAccount._name,
                  "following"+currentCounter,
                  "s",
                  folsforthisresource,
                  seq,
                  function(result){

                    newRevNumbers[currentCounter]=seq;
                    currentCounter++;
                    putTilEmpty(cbfunc)

                },function(error){
                  thisAccount._handleError(error);
                });
                  
              } else {

                  Twister.getUser(thisAccount._name)._followings._data = newfollowings_ori;
                  Twister.getUser(thisAccount._name)._followings._revisionNumber = newRevNumbers;
                  Twister.getUser(thisAccount._name)._followings._do(cbfunc);

              }

          }

      ); 

  };  

  putTilEmpty(cbfunc);
  
  
}

TwisterAccount.prototype.updateProfile = function (newdata,cbfunc) {

	var thisAccount = this;
    
    var Twister = this._scope;
    var thisUser = Twister.getUser(this._name);
    
    thisUser.doProfile(function(profile){
	
      thisAccount._dhtput(
        thisAccount._name,
        "profile",
        "s",
        newdata,
        profile._revisionNumber+1,
        function(result){

          var newprofile = Twister.getUser(thisAccount._name)._profile;
          newprofile._data = newdata;
          if(cbfunc) cbfunc(newprofile);

        },function(error){
          thisAccount._handleError(error);
        }
      );
	
	},{errorfunc:function(error){
    
      if (error.code==32052) {
       
        Twister.getUser(this._name)._profile._lastUpdate = Date.now()/1000;
        Twister.getUser(this._name)._profile._revisionNumber = 0;
        Twister.getUser(this._name)._profile._updateInProgress = false;
        
        thisAccount.updateProfileFields(newdata,cbfunc);
        
      }else{
        thisAccount._handleError(error);
      }
      
    }})

}

TwisterAccount.prototype.updateProfileFields = function (newdata,cbfunc) {

	var thisAccount = this;
    
    var Twister = this._scope;
    var thisUser = Twister.getUser(this._name);
  
    thisUser.doProfile(function(profile){
      
      var olddata = JSON.parse(JSON.stringify(profile._data));
      
      for (var key in newdata) {

          olddata[key] = newdata[key];

      }
      
      thisAccount._dhtput(
        thisAccount._name,
        "profile",
        "s",
        olddata,
        profile._revisionNumber+1,
        function(result){

          var newprofile = Twister.getUser(thisAccount._name)._profile;
          newprofile._data = olddata;
          if(cbfunc) cbfunc(newprofile);

        },function(error){
          thisAccount._handleError(error);
        }
      );
	
    },{errorfunc:function(error){
    
      if (error.code==32052) {
       
        Twister.getUser(this._name)._profile._lastUpdate = Date.now()/1000;
        Twister.getUser(this._name)._profile._revisionNumber = 0;
        Twister.getUser(this._name)._profile._updateInProgress = false;
        
        thisAccount.updateProfileFields(newdata,cbfunc);
        
      }else{
        thisAccount._handleError(error);
      }
      
    }})

}

TwisterAccount.prototype.updateAvatar = function (newdata,cbfunc) {

	var thisAccount = this;
    
    var Twister = this._scope;
    
    Twister.getUser(this._name).doAvatar(function(avatar){
	
		thisAccount._dhtput(
          thisAccount._name,
          "avatar",
          "s",
          newdata,
          avatar._revisionNumber+1,
          function(result){
          
          var newavatar = Twister.getUser(thisAccount._name)._avatar;
          newavatar._data = newdata;
          if(cbfunc) cbfunc(newavatar);
            
		},function(error){
          thisAccount._handleError(error);
		});
	
	},{errorfunc:function(error){
    
      if (error.code==32052) {
       
        Twister.getUser(this._name)._avatar._lastUpdate = Date.now()/1000;
        Twister.getUser(this._name)._avatar._revisionNumber = 0;
        Twister.getUser(this._name)._avatar._updateInProgress = false;
        
        thisAccount.updateAvatar(newdata,cbfunc);
        
      }
      
    }})

}

TwisterAccount.prototype.post = function (msg,cbfunc) {
  
  var post = {msg:msg};
    
  this._signAndPublish(post,cbfunc);

}

TwisterAccount.prototype.reply = function (replyusername,replyid,msg,cbfunc) {
  
  var thisAccount = this;
  
  var post = {
    msg:msg,
    reply:{
      k: replyid,
      n: replyusername      
    }
  };
  
  this._signAndPublish(post,function(newpost){
    
    var v = {
      sig_userpost: newpost._signature,
      userpost: newpost._data
    }
    
    thisAccount._dhtput(
      replyusername,
      "replies"+replyid,
      "m",
      v,
      0,
      function(result){
        Twister.getUser(replyusername)._stream._posts[replyid]._replies._data[newpost.getUsername()+":post"+newpost.getId()]=true; 
        if(cbfunc) cbfunc(newpost);
      },
      function(error){
        thisAccount._handleError(error);
      }
    );
    
  });

}

TwisterAccount.prototype.retwist = function (rtusername,rtid,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  Twister.getUser(rtusername).doPost(rtid,function(post){
    
    var post = {
      rt: post._data,
      sig_rt: post._signature
    }
    
    
    thisAccount._signAndPublish(post,function(newpost){
    
      var v = {
        rt: newpost._data,
        sig_rt: newpost._signature
      }
      
      thisAccount._dhtput(
        rtusername,
        "rts"+rtid,
        "m",
        v,
        0,
        function(result){
          Twister.getUser(rtusername)._stream._posts[rtid]._retwists._data[newpost.getUsername()+":post"+newpost.getId()]=true;  
          if(cbfunc) cbfunc(newpost);
        },
        function(error){
          thisAccount._handleError(error);
        }
      );

    });
    
  });


}

TwisterAccount.prototype.getTorrent = function (username) {
  
  if( username in this._torrents ) {
    return this._torrents[username];
  } else {
    var TwisterTorrent = require('./TwisterTorrent.js');
    var newtorrent = new TwisterTorrent(this._name,username,this._scope);
    this._torrents[username]=newtorrent;
    return this._torrents[username];
  }

}

TwisterAccount.prototype.getDirectMessages = function (username, cbfunc, querySettings) {

	if ( !(username in this._directmessages) ){
	
		var TwisterDirectMessages = require("./TwisterDirectMessages.js");
		
		var newdmsgs = new TwisterDirectMessages(this._name,username,this._scope);
		
		this._directmessages[username] = newdmsgs;
	
	}
	
	return this._directmessages[username];

}

TwisterAccount.prototype.doLatestDirectMessage = function (username, cbfunc, querySettings) {

	this.getDirectMessages(username)._checkQueryAndDo(cbfunc, querySettings);

}

TwisterAccount.prototype.doLatestDirectMessagesUntil = function (username, cbfunc, querySettings) {

	this.getDirectMessages(username)._doUntil(cbfunc, querySettings);

}

TwisterAccount.prototype._signAndPublish = function(post_ori,cbfunc){
  
  var post = JSON.parse(JSON.stringify(post_ori));
  
  if ("sig_rt" in post) {
      post.sig_rt = new Buffer(post.sig_rt, 'hex');
  }
  
  var thisAccount = this;
  
  var Twister = this._scope;

  this.getTorrent(this._name)._checkQueryAndDo(function(thisTorrent){

    var newid = thisTorrent._latestId+1;
  
    thisAccount.RPC("getinfo",[],function(info){

      Twister.getUser(thisAccount._name).doStatus(function(status){  
        
        //console.log("new post msg after",status)

        
        post.height = info.blocks-1;
        post.n = thisAccount._name;
        post.k = newid;
        post.lastk = status.getId();
        post.time = Math.round(Date.now()/1000);
        
        //console.log("new post will be",post)
        
        thisAccount._privkey.sign(post,function(sig){
          
          var v = {
            sig_userpost: sig,
            userpost: post
          };
          
          //console.log("publishing new post ",v);
          
          var message = bencode.encode(v);
          
          thisAccount.RPC("newpostraw",[thisAccount._name,newid,message.toString("hex")],function(){
            
            thisAccount._publishPostOnDht(v,function(){
              
              console.log("going to verify ",v)
              
              v.sig_userpost = v.sig_userpost.toString("hex");
              
              if ("sig_rt" in v.userpost) {
                v.userpost.sig_rt = v.userpost.sig_rt.toString("hex");
              }
              
              thisTorrent._latestId = newid;
              
              Twister.getUser(thisAccount._name)._stream._verifyAndCachePost(v,cbfunc);
              
            });
                        
          },function(error){
            thisAccount._handleError(error);
          });
          
        });
        
      });

    },function(error){
      thisAccount._handleError(error);
    });
    
  });
  
}

TwisterAccount.prototype._dhtput = function(username,resource,sorm,value,seq,cbfunc){
  
  var thisAccount = this;
  
  var Twister = this._scope;
  
  thisAccount.RPC("getinfo",[],function(info){
    
    var p = {
      height: info.blocks-1,
      target:{
        "n" : username,
        "r" : resource,
        "t" : sorm
      },
      time: Math.round(Date.now()/1000),
      v: value
    };
    
    if(sorm=="s"){
      p.seq=seq;
    }
    
    console.log("dhtputraw",username,resource,sorm,p)
    
    thisAccount._privkey.sign(p,function(sig,pWithBuffers){
      
        var dhtentry = {
          p: pWithBuffers,
          sig_user:thisAccount._name,
          sig_p: sig
        }
                
        //console.log("p",dhtentry)
        
        var message = bencode.encode(dhtentry);
        
        thisAccount.RPC("dhtputraw",[message.toString("hex")],function(){
          if(cbfunc) cbfunc();
        },function(error){
          thisAccount._handleError(error);
        });
        
    });
    
  },function(error){
    thisAccount._handleError(error);
  });
  
}

TwisterAccount.prototype._publishPostOnDht = function(v,cbfunc){
  
  var Twister = this._scope;
  
  var thisAccount = this;
  
  var querId = v.sig_userpost.toString("hex");
  
  Twister.onQueryComplete(querId,function(){
    if(cbfunc) cbfunc(v);
  });

  Twister.raiseQueryId(querId);
        
  thisAccount._dhtput(
    thisAccount._name,
    "status",
    "s",
    v,
    v.userpost.k,
    function(result){
      Twister.bumpQueryId(querId);
    },
    function(error){
      thisAccount._handleError(error);
    }
  );
  
  Twister.raiseQueryId(querId);
        
  thisAccount._dhtput(
    thisAccount._name,
    "post"+v.userpost.k,
    "s",
    v,
    1,
    function(result){
      Twister.bumpQueryId(querId);
    },
    function(error){
      thisAccount._handleError(error);
    }
  );
  
  console.log(v)
  
  if(v.userpost && v.userpost.msg){
    
    var parsedContent = TwisterContentParser.parseContent(v.userpost.msg);
           
    console.log("parsed content",parsedContent)
    
    parsedContent.map(function(item){
      
      if(item.type=="hashtag"){
                
        Twister.raiseQueryId(querId);
        
        thisAccount._dhtput(
          item.raw,
          "hashtag",
          "m",
          v,
          0,
          function(result){
            //console.log(Twister.getHashtag(item.raw))
            Twister.getHashtag(item.raw)._data[v.userpost.n+":post"+v.userpost.k]=true;
            Twister.bumpQueryId(querId);
          },
          function(error){
            thisAccount._handleError(error);
          }
        );
        
      }
      
      
      if(item.type=="mention"){
        
        Twister.raiseQueryId(querId);
                
        thisAccount._dhtput(
          item.raw,
          "mention",
          "m",
          v,
          0,
          function(result){
            Twister.getUser(item.raw)._mentions._data[v.userpost.n+":post"+v.userpost.k]=true;
            Twister.bumpQueryId(querId);
          },
          function(error){
            thisAccount._handleError(error);
          }
        );
        
      }
      
    });
        
    
  }
  
}
                  
                  
                  
                  
                  
                  
                  
                  
                  
                  
}).call(this,require("buffer").Buffer)
},{"../TwisterResource.js":157,"./TwisterContentParser.js":140,"./TwisterDirectMessages.js":141,"./TwisterPrivKey.js":142,"./TwisterTorrent.js":143,"bencode":1,"buffer":177,"inherits":52}],140:[function(require,module,exports){
module.exports = {
  extractUsername: function(s) {
      var username = "";
      for( var i = 0; i < s.length; i++ ) {
          var c = s.charCodeAt(i);
          if( (c >= 'a'.charCodeAt(0) && c <= 'z'.charCodeAt(0)) ||
              (c >= 'A'.charCodeAt(0) && c <= 'Z'.charCodeAt(0)) ||
              (c >= '0'.charCodeAt(0) && c <= '9'.charCodeAt(0)) ||
              c == '_'.charCodeAt(0) ) {
              username += s[i];
          } else {
              break;
          }
      }
      return username;
  },
  extractHashtag: function(s) {
      var hashtag = "";
      s = this.reverseHtmlEntities(s);
      for( var i = 0; i < s.length; i++ ) {
          if( " \n\t.,:/?!;'\"()[]{}*#".indexOf(s[i]) < 0 ) {
              hashtag += s[i];
          } else {
              break;
          }
      }
      return hashtag;
  },
  escapeHtmlEntities: function(str) {
      return str
                  .replace(/&/g, '&amp;')
                  .replace(/</g, '&lt;')
                  .replace(/>/g, '&gt;')
                  .replace(/"/g, '&quot;')
                  .replace(/'/g, '&apos;');
  },
  reverseHtmlEntities: function(str) {
      return str
                  .replace(/&lt;/g, '<')
                  .replace(/&gt;/g, '>')
                  .replace(/&quot;/g, '"')
                  .replace(/&apos;/g, "'")
                  .replace(/&amp;/g, '&');
  },
  parseContent: function( msg ) {
      
    var output = [];
  
    var tmp;
    var match = null;
    var index;
    var reAll = new RegExp("(?:^|[ \\n\\t.,:\\/?!])(#|@)");
    
    //msg = this.escapeHtmlEntities(msg);

    while( msg != undefined && msg.length ) {
        
      match = reAll.exec(msg);
      if( match ) {
        index = (match[0] === match[1]) ? match.index : match.index + 1;
        if( match[1] == "@" ) {
          output.push({type:"text",raw:(msg.substr(0, index))});
          tmp = msg.substr(index+1);
          var username = this.extractUsername(tmp);
          if( username.length ) {
              output.push({type:"mention",raw:username});
          }
          msg = tmp.substr(String(username).length);
          continue;
        }

        if( match[1] == "#" ) {
          output.push({type:"text",raw:(msg.substr(0, index))});
          tmp = msg.substr(index+1);
          var hashtag = this.extractHashtag(tmp);
          if( hashtag.length ) {
            var hashtag_lc='';
            for( var i = 0; i < hashtag.length; i++ ) {
                var c = hashtag[i];
                hashtag_lc += (c >= 'A' && c <= 'Z') ? c.toLowerCase() : c;
            }
            output.push({type:"hashtag",raw:hashtag_lc});

          }
          msg = tmp.substr(String(hashtag).length);
          continue;
        }

      }

      output.push({type:"text",raw:this.reverseHtmlEntities(msg)});
      msg = "";
      
    }
    
    return output;
    
  }
}
},{}],141:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('../TwisterResource.js');

/**
 * Describes the direct messages between an {@link TwisterAccount} and an {@link TwisterUser}
 * @class
 */
TwisterDirectMessages = function (walletusername,name,scope) {
    
	this._hasParentUser = true;
	
	this._walletusername = walletusername;
	
    TwisterResource.call(this,name,scope);
    
    this._latestId = -1;
    this._messages = {};
    
    this._type = "directmessages";

}

inherits(TwisterDirectMessages,TwisterResource);

TwisterDirectMessages.prototype.flatten = function () {

    var flatData = TwisterResource.prototype.flatten.call(this);
    
    var flatMessages = [];
    
    for (var id in this._messages){
		
        flatMessages.push(this.flattenMessage(this._messages[id]));
		
    }
    
    flatData.messages = flatMessages;
    flatData.latestId  = this._latestId;  
    flatData.walletusername  = this._walletusername;    
    
    return flatData;

}

TwisterDirectMessages.prototype.inflate = function (flatData) {
    
    var TwisterPost = require('../TwisterPost.js');
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._latestId = flatData.latestId;
    this._walletusername = flatData.walletusername;
    
    for(var i = 0; i < flatData.messages.length; i++){
        
        this._messages[messages.id]=this.inflateMessage(flatData.messages[i]);
    
    }

}

TwisterDirectMessages.prototype.flattenMessage = function (msg) {

	var flatMsg = {};
	
	flatMsg.id=msg.getId();
	flatMsg.time=msg.getTimestamp();
	flatMsg.text=msg.getContent();
	flatMsg.fromMe=msg.getFromMe();
	
	return flatMsg;

}

TwisterDirectMessages.prototype.inflateMessage = function (msg) {

  if (msg.fromMe) {
      msg.sender = this._walletusername;
      msg.receiver = this._name;		
  } else {
      msg.sender = this._name;	
      msg.receiver = this._walletusername;
  }

  var thisDirectMessages = this;

  msg.getId = function () {return this.id};
  msg.getContent = function () {return this.text};
  msg.getSender = function () {return this.sender};
  msg.getReceiver = function () {return this.sender};
  msg.getTimestamp = function () {return this.time};
  msg.doPreviousMessage = function (cbfunc) { thisDirectMessages._doMessage(this.id-1,cbfunc) };

  return msg;

}

TwisterDirectMessages.prototype.trim = function (timestamp) {

  for (var id in this._posts) {
      
    if ( id!=this._latestId && ( !timestamp || timestamp > this._messages[id].getTimestamp() ) ) {
      
      delete this._messages[id];
      
    }

  }
  
  var postCount = Object.keys(this._posts).length;
  
  if ( postCount<=1 && (!timestamp || timestamp > this._lastUpdate) ){
    
    if ( this._posts[this._latestId] && (
      !timestamp || timestamp>this._messages[this._latestId].getTimestamp() 
    )) {

      delete this._posts[this._latestId];

    }
    
    var postCount = Object.keys(this._posts).length;

    if (postCount==0) {
    
      var thisAccount = this._scope.getAccount(this._walletusername);

      delete thisAccount._diretmessages[this._name];
      
    }

  } 

}

TwisterDirectMessages.prototype._do =  function (cbfunc) {
    
  this._doMessage(this._latestId,cbfunc);
    
}

TwisterDirectMessages.prototype._queryAndDo = function (cbfunc) {
    	
    var thisResource = this;
        
	thisResource.RPC("getdirectmsgs", [ thisResource._walletusername , 30 , [{username: this._name}] ], function(res) {
            		
			//console.log(res[thisResource._name]);
		
			if (res[thisResource._name].length>0) {

				for (var i = 0; i<res[thisResource._name].length; i++) {

					thisResource._cacheMessage(res[thisResource._name][i],function(newmsg){

						if ( newmsg.getId() > thisResource._latestId ) {

							thisResource._latestId = newpost.getId();
							thisResource._lastUpdate = Date.now()/1000;

						}

					});

				}
				
				thisResource._do(cbfunc);

			} 

		}, function(ret) {

			thisResource._handleError(ret);

		}
					 
	);
 
        
}

TwisterDirectMessages.prototype._cacheMessage =  function (msg,cbfunc) {
	
    var Twister = this._scope;
        
    var thisResource = this;
    
    var newid = msg.id;
    
    if( !( newid in thisResource._messages) ) {

        var TwisterDirectMsg = require('../TwisterPost.js');

        var newmsg = thisResource.inflateMessage(msg);

        thisResource._messages[newmsg.getId()] = newmsg;
        
        if ( thisResource._latestId<newmsg.getId() ) {
        
            thisResource._latestId=newmsg.getId();
        
        }
        
        if (cbfunc) {
            
            cbfunc(newmsg);

        }
        
    }

}

TwisterDirectMessages.prototype._doMessage = function (id,cbfunc, querySettings) {

    var Twister = this._scope;
    
    if (id && id>0) {

        if (id in this._messages){
            
            cbfunc(this._messages[id])
            
        } else {
            
            var thisResource = this;
			         
			thisResource._updateInProgress = true;
			
            thisResource.RPC("getspamposts", [ 30 , id ], function(res) {
            		
					if (res.length>0) {

						for (var i = 0; i<res.length; i++) {

							thisResource._cacheMessage(res[i]);

						}

						cbfunc(thisResource._messages[id])

					} 
				
					thisResource._updateInProgress = false;

				}, querySettings
			);
            
        }
        
    }
    
};

TwisterDirectMessages.prototype._doUntil = function (cbfunc, querySettings) {

	this._checkQueryAndDo(function doUntil(message){
	
		var retVal = cbfunc(message);
		
		if( message.getId()!=1 && retVal!==false ) { 
			
			message.doPreviousMessage(doUntil, querySettings); 
			
		}
	
	}, querySettings);
	
}

module.exports = TwisterDirectMessages;


},{"../TwisterPost.js":152,"../TwisterResource.js":157,"inherits":52}],142:[function(require,module,exports){
(function (Buffer){
var inherits = require('inherits');

var TwisterResource = require('../TwisterResource.js');

var Bitcoin = require('bitcoinjs-lib');
var Crypto = require('crypto');
var buffer = require('buffer').Buffer;
var bencode = require('bencode');

/*var Bitcoin = require('bitcoinjs-lib');
var Crypto = require('crypto');
var buffer = require('buffer').Buffer;
var bencode = require('bencode');
var request = require('request');
var wif = require('wif');
var BigInteger = require('bigi');
var bs58check = require('bs58check');*/

var twister_network = Bitcoin.networks.bitcoin;

twister_network.messagePrefix= '\x18twister Signed Message:\n';

/**
 * Describes the public key of a user.
 * @class
 */
var TwisterPrivKey = function (name,scope) {
    
    this._name = name;

    TwisterResource.call(this,name,scope);   
    
    this._type = "privkey";
  
    this._verified = true;

    this._status =  "unchecked";
  
    this._createdAt = Date.now()/1000;
  
}

inherits(TwisterPrivKey,TwisterResource);

module.exports = TwisterPrivKey;

TwisterPrivKey.prototype.flatten = function () {

  var flatData = TwisterResource.prototype.flatten.call(this);

  flatData.status = this._status;
  flatData.createdAt = this._createdAt;

  return flatData;
    
}

TwisterPrivKey.prototype.inflate = function (flatData) {

    TwisterResource.prototype.inflate.call(this,flatData);

    this._status = flatData.status;
    this._createdAt = flatData.createdAt;
  
    if (this._data) {
    
        this._btcKey = Bitcoin.ECPair.fromWIF(this._data,twister_network);
    
    }

}

TwisterPrivKey.prototype.trim = function (timestamp) {

}

TwisterPrivKey.prototype.getStatus = function () {
  
  return this._status || "unchecked";
  
}

TwisterPrivKey.prototype.getCreatedAt = function () {
  
  return this._createdAt;
  
}

TwisterPrivKey.prototype.getKey = function () {

    return this._data;
    
}

TwisterPrivKey.prototype.setKey = function (key) {

  this._data = key;

  if (this._data) {
    this._btcKey = Bitcoin.ECPair.fromWIF(this._data,twister_network);
  }else{
    this._btcKey = null;
  }
  
}

TwisterPrivKey.prototype.makeRandomKey = function (key) {

  this._btcKey = Bitcoin.ECPair.makeRandom(twister_network);
  
  this._data = this._btcKey.toWIF();
  
}

TwisterPrivKey.prototype.verifyKey = function (cbfunc,querySettings) {
  
  var Twister = this._scope;
  
  var thisResource = this;
  
  Twister.getUser(this._name)._doPubKey(function(pubkey,querySettings){
          
    if(pubkey._data){
      
      if(pubkey._data==thisResource.getPubKey()){
        
        thisResource._status = "confirmed";
        
      }else{
        
        thisResource._status = "conflicting";
        
      }
      
      
    }else{
      
      thisResource._status = "unconfirmed";
      
    }
    
    if(cbfunc) cbfunc(thisResource);
    
  })
  
}

TwisterPrivKey.prototype.getPubKey = function() {
  
  return this._btcKey.getPublicKeyBuffer().toString("hex");
  
}

TwisterPrivKey.prototype._queryAndDo = function (cbfunc) {
	          
  var thisResource = this;

  setTimeout(function(){
    
    if(thisResource._data!=null && thisResource._btcKey==null){
      
      thisResource._btcKey = Bitcoin.ECPair.fromWIF(thisResource._data,twister_network);
      
    }

    thisResource._lastUpdate = Date.now()/1000;

    if (cbfunc) {

      cbfunc(thisResource);

    }
    
  });
   
}

TwisterPrivKey.prototype.sign = function (message_ori, cbfunc) {

  var thisResource = this;

  var message = JSON.parse(JSON.stringify(message_ori));

  if ("p" in message && (typeof message.p)=="object"){ 
    if ("v" in message.p && (typeof message.p.v)=="object"){ 
      if("sig_userpost" in message.p.v && !Buffer.isBuffer(message.p.v.sig_userpost)) {
        message.p.v.sig_userpost = new Buffer(message.p.v.sig_userpost, 'hex');
      }
      if ("userpost" in message.p.v) { 
        if ("sig_rt" in message.p.v.userpost && !Buffer.isBuffer(message.p.v.userpost.sig_rt)) {
          message.p.v.userpost.sig_rt = new Buffer(message.p.v.userpost.sig_rt, 'hex');
        }
      }
    }
  }
  
  
  if ("v" in message && (typeof message.v)=="object"){ 
    if("sig_userpost" in message.v && !Buffer.isBuffer(message.v.sig_userpost)) {
      message.v.sig_userpost = new Buffer(message.v.sig_userpost, 'hex');
    }
    if ("userpost" in message.v) { 
      if ("sig_rt" in message.v.userpost && !Buffer.isBuffer(message.v.userpost.sig_rt)) {
        message.v.userpost.sig_rt = new Buffer(message.v.userpost.sig_rt, 'hex');
      }
    }
  }

  if ("sig_rt" in message && !Buffer.isBuffer(message.sig_rt)) {
    message.sig_rt = new Buffer(message.sig_rt, 'hex');
  } 
  if("sig_userpost" in message && !Buffer.isBuffer(message.sig_userpost)) {
    message.sig_userpost = new Buffer(message.sig_userpost, 'hex');
  }

  var Twister = this._scope;

  var keyPair=this._btcKey;

  setTimeout(function(){

    var startTime = Date.now();

    //console.log("signing",message);
    
    bmessage = bencode.encode(message);

    try {
      var retVal = Bitcoin.message.sign(keyPair,bmessage ,twister_network);
      cbfunc(retVal,message)
    } catch(e) {
      //console.log(e)
      thisResource._handleError({
        code: 123,
        message:"post signing went sideways"
      });
    }

  },0);

}

TwisterPrivKey.prototype.decrypt = function(message_ori,cbfunc){
  
  var thisResource = this;
  
  setTimeout(function(){
    
    var sec_key = message_ori.userpost.dm.key;
    var sec_body = message_ori.userpost.dm.body;
    var sec_mac = message_ori.userpost.dm.mac;
    var sec_orig = message_ori.userpost.dm.orig;

    if (!Buffer.isBuffer(sec_key)) {
        sec_key = new Buffer(sec_key, "hex");
    }
    if (!Buffer.isBuffer(sec_body)) {
        sec_body = new Buffer(sec_body, "hex");
    }
    if (!Buffer.isBuffer(sec_mac)) {
        sec_mac = new Buffer(sec_mac, "hex");
    }

    var pubkey = Bitcoin.ECPair.fromPublicKeyBuffer(sec_key)
    var secret = pubkey.Q.multiply(thisResource._btcKey.d).getEncoded().slice(1,33)

    var hash_secret = Crypto.createHash('sha512').update(secret).digest()
    var aes_key = hash_secret.slice(0,32)

    var hmac_key = hash_secret.slice(32,64)

    var hmac=Crypto.createHmac("sha512",hmac_key)
    hmac.update(sec_body)
    var hmac_val = hmac.digest()

    if(sec_mac.toString()!=hmac_val.toString()){

      thisResource._handleError({
        message: "Post could not be decrypted.",
        code: 32063
      })

    }else{

      try{
        // note: new Buffer(16) does not give an empty (all zero) buffer
        var iv = new Buffer("00000000000000000000000000000000","hex");
        var decrypter = Crypto.createDecipheriv("aes-256-cbc",aes_key,iv)
        decrypter.setAutoPadding()
        var out = [];
        out.push(decrypter.update(sec_body))
        out.push(decrypter.final())
        var decrypted = bencode.decode(Buffer.concat(out).slice(0,sec_orig));

        for(var key in decrypted){
          if(Buffer.isBuffer(decrypted[key])){
            decrypted[key] = decrypted[key].toString();
          }
        }

        cbfunc(decrypted)

      }catch(e){
        thisResource._handleError({
          message: "Post could not be decrypted",
          code: 32063
        })
      }
    }
    
  },0)

}
}).call(this,require("buffer").Buffer)
},{"../TwisterResource.js":157,"bencode":1,"bitcoinjs-lib":44,"buffer":177,"crypto":183,"inherits":52}],143:[function(require,module,exports){
//'use strict';

var inherits = require('inherits');
var TwisterResource = require('../TwisterResource.js');

/**
 * Describes the torrent of the {@link TwisterPosts} of a {@link TwisterUser} when available on the host. The torrent significantly speeds up post querying time. It is implemented as a look-ahead that is queryied when accessing a post that is not already in cache.
 * @class
 */
TwisterTorrent = function (walletusername,name,scope) {
    
  this._hasParentUser = true;

  this._walletusername = walletusername;

  TwisterResource.call(this,name,scope);

  this._latestId = -1;
  this._messages = {};
    
  
  this._active = false;
  this._type = "torrent";

}

inherits(TwisterTorrent,TwisterResource);

module.exports = TwisterTorrent;

TwisterTorrent.prototype.flatten = function () {

  var flatData = TwisterResource.prototype.flatten.call(this);

  flatData.active = this._active;

  return flatData;
    
}

TwisterTorrent.prototype.inflate = function (flatData) {

  TwisterResource.prototype.inflate.call(this,flatData);

  this._active = flatData.active;

}

TwisterTorrent.prototype.trim = function (timestamp) {

  if ( !this._active && (!timestamp || timestamp > this._lastUpdate) ){

    var thisAccount = this._scope.getAccount(this._walletusername);

    delete thisAccount._torrents[this._name];
    
  }

}

TwisterTorrent.prototype.activate = function () {
  
  this._active = true;
  var thisStream = Twister.getUser(this._name)._stream;
  thisStream._activeTorrentUser = this._walletusername;

}

TwisterTorrent.prototype.deactivate = function () {
  
  this._active = false;
  
  var foundReplacement = false;
  
  for (var username in Twister._wallet){

    if (this._name in Twister._wallet[username]._torrents) {
      if (Twister._wallet[username]._torrents[this._name]._active) {
        Twister.getUser(this._name)._stream._activeTorrentUser=username;
        foundReplacement = true;
      }
    }
  }
  
  if (!foundReplacement) {
    var thisStream = Twister.getUser(this._name)._stream;
    thisStream._activeTorrentUser = null;
  }

}

TwisterTorrent.prototype.getQuerySetting = function (setting) {

  //console.log(this._name);

  var Twister = this._scope;

  if (setting in this._activeQuerySettings) {
    return this._activeQuerySettings[setting];
  }

  if (setting in this._querySettings) {
    return this._querySettings[setting];
  }

  if (setting in Twister.getAccount(this._walletusername)._querySettings) {
    return Twister.getAccount(this._walletusername)._querySettings[setting];
  }

  if (setting in Twister.getUser(this._name)._stream._activeQuerySettings) {
    return Twister.getUser(this._name)._stream._activeQuerySettings[setting];
  }

  if (setting in Twister.getUser(this._name)._stream._querySettings) {
    return Twister.getUser(this._name)._stream._querySettings[setting];
  }

  return TwisterResource.prototype.getQuerySetting.call(this,setting);

}

TwisterTorrent.prototype._queryAndDo = function (cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  
  var thisAccount = Twister.getAccount(this._walletusername);
  
  if (thisTorrent._active) {
    
    thisTorrent._log("locking torrents of same account")
    
    var torrentlist = [];
    
    for (var username in thisAccount._torrents){

      if (thisAccount._torrents[username]._active) {              
        thisAccount._torrents[username]._updateInProgress = true;
        torrentlist.push(username)
      }
      
    }
    
    thisTorrent.RPC("getlasthave", [ "guest", torrentlist ], function(res) {

      if (thisTorrent._name in res) { 

        thisTorrent._active = true ;
        
        thisTorrent._log("updating other torrents based on getlasthave result")
        
        for (var username in res) {
          
          if (username in thisAccount._torrents) {

            var resTorrent = thisAccount._torrents[username];

            if (resTorrent._active) {

              resTorrent._latestId = res[username];       
              resTorrent._lastUpdate = Date.now()/1000;  
              resTorrent._updateInProgress = false;

            }
          }
          
        }
        

      } else {

        thisTorrent._active = false ;
        thisTorrent._followingName = null ;
        thisTorrent._handleError({mesage:"Torrent not active on server"});

      }
      
      thisTorrent._log("unlocking torrents with same following name")
      
      for (var username in thisAccount._torrents){

      if (thisAccount._torrents[username]._active) {              
          thisAccount._torrents[username]._updateInProgress = false;
      }
    }

      if (cbfunc) {

        thisTorrent._do(cbfunc);

      }

    }, function(ret) {

      thisTorrent._handleError(ret);

    });
    
  } else {
     
    thisTorrent._handleError({
      message: "Torrent inactive. Activate torrent first!",
      code: 32082
    });
    
  }

}

TwisterTorrent.prototype._fillCacheUsingGetposts = function (count,requests,cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  var thisStream = Twister.getUser(this._name)._stream;

  if (thisTorrent._active) {

    thisStream._log("querying getposts for "+requests.length+" users")

    for (var i in requests){
      Twister.getUser(requests[i].username)._stream._updateInProgress = true;    
    }

    thisTorrent.RPC("getposts", [ count , requests ], function(res) {

      var minIds = {};

      if (res.length>0) {

        for (var i in res) {

          var resUsername = res[i].userpost.n;
          var resId = res[i].userpost.k;

          if (resUsername in minIds) {
            minIds[resUsername]=Math.min(resId,minIds[resUsername]);
          } else {
            minIds[resUsername]=resId;
          }

          var resStream = Twister.getUser(res[i].userpost.n)._stream;

          resStream._verifyAndCachePost(res[i]);

        }

        if (res.length<count) {

          thisStream._log("got all posts, no need to requery");

          for (var i in requests){
            if ( !requests.max_id || requests.max_id==-1 ) {
              Twister.getUser(requests[i].username)._stream._lastUpdate = Date.now()/1000;
              Twister.getUser(requests[i].username)._stream._updateInProgress = false;
            }
          }

          cbfunc(true);

        } else {

          var newrequests = [];

          for (var i in requests){

            if (!(requests[i].username in minIds)) {
              newrequests.push(requests[i]);
            } else {
              Twister.getUser(requests[i].username)._stream._lastUpdate = Date.now()/1000;
              Twister.getUser(requests[i].username)._stream._updateInProgress = false;
            }


            if ( !requests.max_id || requests.max_id==-1 ) {
              Twister.getUser(requests[i].username)._stream._lastUpdate = Date.now()/1000;
              Twister.getUser(requests[i].username)._stream._updateInProgress = false;
            }


          }

          if (newrequests.length) {

            thisStream._log("incomplete result. requerying");

            setTimeout(function(){
              thisTorrent._fillCacheUsingGetposts(count,newrequests,cbfunc);
            },200);

          } else {

            thisStream._log("count full but ok");

            cbfunc(true);

          }

        }

      } else {

        thisStream._log("getposts gave an empty result")

      }

    }, function(ret) {

        thisStream._handleError(ret);

    });

  } else {

    cbfunc(false);

  }
    
}

TwisterTorrent.prototype._checkForUpdatesUsingGetLastHave = function (cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  var thisStream = Twister.getUser(this._name)._stream;
  var thisAccount = Twister.getAccount(this._walletusername);
    
  
  for (var username in thisAccount._torrents){

    if (thisAccount._torrents[username]._active) {              
        Twister.getUser(username)._stream._updateInProgress = true;
    }
  }
  
  thisTorrent._checkQueryAndDo( function() {

    if (thisTorrent._active) {

      var outdatedUsers =[];

      for (var username in thisAccount._torrents) {

        var resTorrent = thisAccount._torrents[username];

        if (resTorrent._active) {

          resTorrent._latestId = resTorrent._latestId;       
          resTorrent._lastUpdate = Date.now()/1000;  
          resTorrent._updateInProgress = false;

        }

        thisTorrent._log("comparing latest id for ",username,resTorrent._latestId,Twister.getUser(username)._stream._latestId);
        
        if (resTorrent._latestId==Twister.getUser(username)._stream._latestId) {

          Twister.getUser(username)._stream._lastUpdate=Date.now()/1000;
          Twister.getUser(username)._stream._updateInProgress=false;

        } else {

          
          thisTorrent._log("found outdated user ",username);
          
          outdatedUsers.push({username:username});

        }

      }

      thisTorrent._fillCacheUsingGetposts(30,outdatedUsers,function(){

          cbfunc(true);

          for (var username in thisAccount._torrents){

            if (thisAccount._torrents[username]._active) {              
                Twister.getUser(username)._stream._updateInProgress = false;
            }
          }

      });

    } else {

      cbfunc(false);

    }

    for (var username in thisAccount._torrents){

      if (thisAccount._torrents[username]._active) {              
          Twister.getUser(username)._stream._updateInProgress = false;
      }
    }

  });
    
}

TwisterTorrent.prototype.updatePostsCache = function (cbfunc) {
    
  var Twister = this._scope;

  var thisTorrent = this;
  var thisStream = Twister.getUser(this._name)._stream;

  thisStream._log("update posts cache "+thisStream._name)  

  thisTorrent._checkForUpdatesUsingGetLastHave(function(uptodate){

    if (uptodate) {
    thisStream._log("lasthaves "+thisTorrent._name+" worked") 

      cbfunc(true);

    } else {
    thisStream._log("lasthaves "+thisTorrent._name+" failed") 

      thisTorrent._fillCacheUsingGetposts(30,[{username:thisTorrent._name}],cbfunc);

    }

  });
    
}

TwisterTorrent.prototype.fillPostsCache = function (id,cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  var thisUser = Twister.getUser(this._name);
  var thisStream = Twister.getUser(this._name)._stream;

  thisStream._log("fill cache "+thisTorrent._name+" id "+id)  

  thisTorrent._fillCacheUsingGetposts(30,[{username:thisTorrent._name,max_id:id}],cbfunc);

}
},{"../TwisterResource.js":157,"inherits":52}],144:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('../TwisterResource.js');

/**
 * Describes a user account in Twister. Allows for the private information about that user as well as for posting new messages.
 * @class ServerWallet_TwisterAccount
 */
function TwisterAccount(name,scope) {
    
	TwisterResource.call(this,name,scope);
	
    this._name = name;
    this._scope = scope;
	
    this._type = "account";
	this._hasParentUser = false;
    
	this._wallettype = "server";
	
	this._directmessages = {};
  
    this._torrents = {};

}

module.exports = TwisterAccount;

inherits(TwisterAccount,TwisterResource);

TwisterAccount.prototype.flatten = function () {
    
    var flatData = TwisterResource.prototype.flatten.call(this);

    flatData.wallettype = this._wallettype;
    
    flatData.directmessages = [];
    
    for (var username in this._directmessages){
        flatData.directmessages.push(this._directmessages[username].flatten());
    }
  
    flatData.torrents = [];
    
    for (var username in this._torrents){
        flatData.torrents.push(this._torrents[username].flatten());
    }
    
    return flatData;


}

TwisterAccount.prototype.inflate = function (flatData) {
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._wallettype = flatData.wallettype;
    this._privateFollowings = flatData.privateFollowings;

    var TwisterDirectMessages = require('./TwisterDirectMessages.js');
    var TwisterTorrent = require('./TwisterTorrent.js');

    for(var i in flatData.directmessages){

        var newuser = new TwisterDirectMessages(this._name,flatData.directmessages[i].name,Twister);
        newuser.inflate(flatData.directmessages[i]);
        this._directmessages[flatData.directmessages[i].name]=newuser;

    }

    for(var i in flatData.torrents){

        var newuser = new TwisterTorrent(this._name,flatData.torrents[i].name,Twister);
        newuser.inflate(flatData.torrents[i]);
        this._torrents[flatData.torrents[i].name]=newuser;

    }

}

TwisterAccount.prototype.trim = function (timestamp) {

  for (var username in this._directmessages){
    this._directmessages[username].trim(timestamp);
  }

  for (var username in this._torrents){
    this._torrents[username].trim(timestamp);
  }
  
}


TwisterAccount.prototype.getUsername = function () {return this._name}

TwisterAccount.prototype.activateTorrents = function (cbfunc,querySettings) {

	var Twister = this._scope;
    
    var thisAccount = this;

    thisAccount.RPC("getlasthave", [ this._name ], function(res) {
        
		for (var username in res) {
          
          var resTorrent = thisAccount.getTorrent(username);

          resTorrent.activate();

          resTorrent._latestId = res[username];       
          resTorrent._lastUpdate = Date.now()/1000;  
          resTorrent._updateInProgress = false;
          
          thisAccount._log("torrent for "+username+" activated");

		}
		
		cbfunc();
        
    }, function(ret) {
        
        thisAccount._handleError(ret);
        
    });

}

TwisterAccount.prototype.unfollow = function (username,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  thisAccount.RPC("unfollow",[
    
      thisAccount._name,
      [username]
    
  ],function(result){

    Twister.getUser(thisAccount._name).doFollowings(cbfunc,{outdatedLimit: 0});
    
  },function(error){
      TwisterAccount._handleError(error);
  });

}

TwisterAccount.prototype.follow = function (username,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  thisAccount.RPC("follow",[
    
      thisAccount._name,
      [username]
    
  ],function(result){
    
    Twister.getUser(thisAccount._name).doFollowings(cbfunc,{outdatedLimit: 0});
    
  },function(error){
    thisAccount._handleError(error);
  });

}

TwisterAccount.prototype.updateProfile = function (newdata,cbfunc) {

	var thisAccount = this;
    
    var Twister = this._scope;
    var thisUser = Twister.getUser(this._name);
    
    thisUser.doProfile(function(profile){
	
      thisAccount.RPC("dhtput",[
          thisAccount._name,
          "profile",
          "s",
          newdata,
          thisAccount._name,
          profile._revisionNumber+1
      ],function(result){

        var TwisterProfile = require("../TwisterProfile.js");

        var newprofile = new TwisterProfile(thisAccount._name,Twister);
        newprofile._data = newdata;
        cbfunc(newprofile);

      },function(error){
        thisAccount._handleError(error);
      });
	
	},{errorfunc:function(error){
    
      if (error.code==32052) {
       
        Twister.getUser(this._name)._profile._lastUpdate = Date.now()/1000;
        Twister.getUser(this._name)._profile._revisionNumber = 0;
        Twister.getUser(this._name)._profile._updateInProgress = false;
        
        thisAccount.updateProfileFields(newdata,cbfunc);
        
      }
      
    }})

}

TwisterAccount.prototype.updateProfileFields = function (newdata,cbfunc) {

	var thisAccount = this;
    
    var Twister = this._scope;
    var thisUser = Twister.getUser(this._name);
  
    thisUser.doProfile(function(profile){
      
      var olddata = JSON.parse(JSON.stringify(profile._data));
      
      for (var key in newdata) {

          olddata[key] = newdata[key];

      }
      
      thisAccount.RPC("dhtput",[
          thisAccount._name,
          "profile",
          "s",
          olddata,
          thisAccount._name,
          profile._revisionNumber+1
        ],function(result){
          
          var TwisterProfile = require("../TwisterProfile.js");
          
          var newprofile = new TwisterProfile(thisAccount._name,Twister);
          newprofile._data = olddata;
          cbfunc(newprofile);
        
        },function(error){
          thisAccount._handleError(error);
      });
	
    },{errorfunc:function(error){
    
      if (error.code==32052) {
       
        Twister.getUser(this._name)._profile._lastUpdate = Date.now()/1000;
        Twister.getUser(this._name)._profile._revisionNumber = 0;
        Twister.getUser(this._name)._profile._updateInProgress = false;
        
        thisAccount.updateProfileFields(newdata,cbfunc);
        
      }
      
    }})

}

TwisterAccount.prototype.updateAvatar = function (newdata,cbfunc) {

	var thisAccount = this;
    
    var Twister = this._scope;
    
    Twister.getUser(this._name).doAvatar(function(avatar){
	
		thisAccount.RPC("dhtput",[
			thisAccount._name,
			"avatar",
			"s",
			newdata,
			thisAccount._name,
			avatar._revisionNumber+1
		],function(result){
          
          var TwisterAvatar = require("../TwisterAvatar.js");
          
          var newprofile = new TwisterAvatar(thisAccount._name,Twister);
          newprofile._data = newdata;
          cbfunc(newprofile);
		
		},function(error){
          thisAccount._handleError(error);
		});
	
	},{errorfunc:function(error){
    
      if (error.code==32052) {
       
        Twister.getUser(this._name)._avatar._lastUpdate = Date.now()/1000;
        Twister.getUser(this._name)._avatar._revisionNumber = 0;
        Twister.getUser(this._name)._avatar._updateInProgress = false;
        
        thisAccount.updateAvatar(newdata,cbfunc);
        
      }
      
    }})

}

TwisterAccount.prototype.post = function (msg,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  this.getTorrent(this._name)._checkQueryAndDo(function(thisTorrent){

    var newid = thisTorrent._latestId+1;
    //thisTorrent._latestId = newid;

    thisAccount.RPC("newpostmsg",[
        thisAccount._name,
        newid,
        msg
    ],function(result){
      
//      var TwisterPost = require("../TwisterPost.js");      
//      var data = {};
//      data.n = thisAccount._name;
//      data.k = newid;
//      data.time = Math.round(Date.now()/1000);
//      data.msg = msg;
//      var newpost = new TwisterPost(data,"",Twister);
//      cbfunc(newpost);
      Twister.getUser(thisAccount._name).doStatus(cbfunc,{outdatedLimit: 0});
    },function(error){
      thisAccount._handleError(error);
    });

  });

}

TwisterAccount.prototype.reply = function (replyusername,replyid,msg,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  this.getTorrent(this._name)._checkQueryAndDo(function(thisTorrent){

    var newid = thisTorrent._latestId+1;
    //thisTorrent._latestId = newid;

    thisAccount.RPC("newpostmsg",[
        thisAccount._name,
        newid,
        msg,
        replyusername,
        replyid
    ],function(result){
      
//      var TwisterPost = require("../TwisterPost.js");      
//      var data = {};
//      data.n = thisAccount._name;
//      data.k = newid;
//      data.time = Math.round(Date.now()/1000);
//      data.msg = msg;
//      data.reply = { k: replyid, n: replyusername };
//      var newpost = new TwisterPost(data,"",Twister);
//      cbfunc(newpost);
      Twister.getUser(thisAccount._name).doStatus(cbfunc,{outdatedLimit: 0});
    },function(error){
      thisAccount._handleError(error);
    });

  });

}

TwisterAccount.prototype.retwist = function (rtusername,rtid,cbfunc) {
  
  var thisAccount = this;
    
  var Twister = this._scope;

  this.getTorrent(this._name)._checkQueryAndDo(function(thisTorrent){

    var newid = thisTorrent._latestId+1;
    //thisTorrent._latestId = newid;
    
    Twister.getUser(rtusername).doPost(rtid,function(post){

      thisAccount.RPC("newrtmsg",[
          thisAccount._name,
          newid,
          {  sig_userpost: post._signature, userpost: post._data }
      ],function(result){

//        var TwisterPost = require("../TwisterPost.js");      
//        var data = {};
//        data.n = thisAccount._name;
//        data.k = newid;
//        data.time = Math.round(Date.now()/1000);
//        data.rt = post._data;
//        var newpost = new TwisterPost(data,"",Twister);
//        cbfunc(newpost);
        Twister.getUser(thisAccount._name).doStatus(cbfunc,{outdatedLimit: 0});
        
      },function(error){
        thisAccount._handleError(error);
      });
      
    });

  });

}

TwisterAccount.prototype.getTorrent = function (username) {
  
  if( username in this._torrents ) {
    return this._torrents[username];
  } else {
    var TwisterTorrent = require('./TwisterTorrent.js');
    var newtorrent = new TwisterTorrent(this._name,username,this._scope);
    this._torrents[username]=newtorrent;
    return this._torrents[username];
  }

}

TwisterAccount.prototype.getDirectMessages = function (username, cbfunc, querySettings) {

	if ( !(username in this._directmessages) ){
	
		var TwisterDirectMessages = require("./TwisterDirectMessages.js");
		
		var newdmsgs = new TwisterDirectMessages(this._name,username,this._scope);
		
		this._directmessages[username] = newdmsgs;
	
	}
	
	return this._directmessages[username];

}

TwisterAccount.prototype.doLatestDirectMessage = function (username, cbfunc, querySettings) {

	this.getDirectMessages(username)._checkQueryAndDo(cbfunc, querySettings);

}

TwisterAccount.prototype.doLatestDirectMessagesUntil = function (username, cbfunc, querySettings) {

	this.getDirectMessages(username)._doUntil(cbfunc, querySettings);

}
},{"../TwisterAvatar.js":148,"../TwisterProfile.js":153,"../TwisterResource.js":157,"./TwisterDirectMessages.js":145,"./TwisterTorrent.js":146,"inherits":52}],145:[function(require,module,exports){
arguments[4][141][0].apply(exports,arguments)
},{"../TwisterPost.js":152,"../TwisterResource.js":157,"dup":141,"inherits":52}],146:[function(require,module,exports){
//'use strict';

var inherits = require('inherits');
var TwisterResource = require('../TwisterResource.js');

/**
 * Describes the torrent of the {@link TwisterPosts} of a {@link TwisterUser} when available on the host. The torrent significantly speeds up post querying time. It is implemented as a look-ahead that is queryied when accessing a post that is not already in cache.
 * @class
 */
TwisterTorrent = function (walletusername,name,scope) {
    
  this._hasParentUser = true;

  this._walletusername = walletusername;

  TwisterResource.call(this,name,scope);

  this._latestId = -1;
  this._messages = {};
    
  
  this._active = false;
  this._type = "torrent";

}

inherits(TwisterTorrent,TwisterResource);

module.exports = TwisterTorrent;

TwisterTorrent.prototype.flatten = function () {

  var flatData = TwisterResource.prototype.flatten.call(this);

  flatData.active = this._active;

  return flatData;
    
}

TwisterTorrent.prototype.inflate = function (flatData) {

  TwisterResource.prototype.inflate.call(this,flatData);

  this._active = flatData.active;

}

TwisterTorrent.prototype.trim = function (timestamp) {

  if ( !this._active && (!timestamp || timestamp > this._lastUpdate) ){

    var thisAccount = this._scope.getAccount(this._walletusername);

    delete thisAccount._torrents[this._name];
    
  }

}

TwisterTorrent.prototype.activate = function () {
  
  this._active = true;
  var thisStream = Twister.getUser(this._name)._stream;
  thisStream._activeTorrentUser = this._walletusername;

}

TwisterTorrent.prototype.deactivate = function () {
  
  this._active = false;
  
  var foundReplacement = false;
  
  for (var username in Twister._wallet){

    if (this._name in Twister._wallet[username]._torrents) {
      if (Twister._wallet[username]._torrents[this._name]._active) {
        Twister.getUser(this._name)._stream._activeTorrentUser=username;
        foundReplacement = true;
      }
    }
  }
  
  if (!foundReplacement) {
    var thisStream = Twister.getUser(this._name)._stream;
    thisStream._activeTorrentUser = null;
  }

}

TwisterTorrent.prototype.getQuerySetting = function (setting) {

  //console.log(this._name);

  var Twister = this._scope;

  if (setting in this._activeQuerySettings) {
    return this._activeQuerySettings[setting];
  }

  if (setting in this._querySettings) {
    return this._querySettings[setting];
  }

  if (setting in Twister.getAccount(this._walletusername)._querySettings) {
    return Twister.getAccount(this._walletusername)._querySettings[setting];
  }

  if (setting in Twister.getUser(this._name)._stream._activeQuerySettings) {
    return Twister.getUser(this._name)._stream._activeQuerySettings[setting];
  }

  if (setting in Twister.getUser(this._name)._stream._querySettings) {
    return Twister.getUser(this._name)._stream._querySettings[setting];
  }

  return TwisterResource.prototype.getQuerySetting.call(this,setting);

}

TwisterTorrent.prototype._queryAndDo = function (cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  
  var thisAccount = Twister.getAccount(this._walletusername);
  
  if (thisTorrent._active) {
    
    thisTorrent._log("locking torrents of same account")
    
    for (var username in thisAccount._torrents){

      if (thisAccount._torrents[username]._active) {              
          thisAccount._torrents[username]._updateInProgress = true;
      }
    }

    thisTorrent.RPC("getlasthave", [ this._walletusername ], function(res) {

      if (thisTorrent._name in res) { 

        thisTorrent._active = true ;
        
        thisTorrent._log("updating other torrents based on getlasthave result")
        
        for (var username in res) {
          
          if (username in thisAccount._torrents) {

            var resTorrent = thisAccount._torrents[username];

            if (resTorrent._active) {

              resTorrent._latestId = res[username];       
              resTorrent._lastUpdate = Date.now()/1000;  
              resTorrent._updateInProgress = false;

            }
          }
          
        }
        

      } else {

        thisTorrent._active = false ;
        thisTorrent._followingName = null ;
        thisTorrent._handleError({mesage:"Torrent not active on server"});

      }
      
      thisTorrent._log("unlocking torrents with same following name")
      
      for (var username in thisAccount._torrents){

      if (thisAccount._torrents[username]._active) {              
          thisAccount._torrents[username]._updateInProgress = false;
      }
    }

      if (cbfunc) {

        thisTorrent._do(cbfunc);

      }

    }, function(ret) {

      thisTorrent._handleError(ret);

    });
    
  } else {
     
    thisTorrent._handleError({
      message: "Torrent inactive. Activate torrent first!",
      code: 32082
    });
    
  }

}

TwisterTorrent.prototype._fillCacheUsingGetposts = function (count,requests,cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  var thisStream = Twister.getUser(this._name)._stream;

  if (thisTorrent._active) {

    thisStream._log("querying getposts for "+requests.length+" users")

    for (var i in requests){
      Twister.getUser(requests[i].username)._stream._updateInProgress = true;    
    }

    thisTorrent.RPC("getposts", [ count , requests ], function(res) {

      var minIds = {};

      if (res.length>0) {

        for (var i in res) {

          var resUsername = res[i].userpost.n;
          var resId = res[i].userpost.k;

          if (resUsername in minIds) {
            minIds[resUsername]=Math.min(resId,minIds[resUsername]);
          } else {
            minIds[resUsername]=resId;
          }

          var resStream = Twister.getUser(res[i].userpost.n)._stream;

          resStream._verifyAndCachePost(res[i]);

        }

        if (res.length<count) {

          thisStream._log("got all posts, no need to requery");

          for (var i in requests){
            if ( !requests.max_id || requests.max_id==-1 ) {
              Twister.getUser(requests[i].username)._stream._lastUpdate = Date.now()/1000;
              Twister.getUser(requests[i].username)._stream._updateInProgress = false;
            }
          }

          cbfunc(true);

        } else {

          var newrequests = [];

          for (var i in requests){

            if (!(requests[i].username in minIds)) {
              newrequests.push(requests[i]);
            } else {
              Twister.getUser(requests[i].username)._stream._lastUpdate = Date.now()/1000;
              Twister.getUser(requests[i].username)._stream._updateInProgress = false;
            }


            if ( !requests.max_id || requests.max_id==-1 ) {
              Twister.getUser(requests[i].username)._stream._lastUpdate = Date.now()/1000;
              Twister.getUser(requests[i].username)._stream._updateInProgress = false;
            }


          }

          if (newrequests.length) {

            thisStream._log("incomplete result. requerying");

            setTimeout(function(){
              thisTorrent._fillCacheUsingGetposts(count,newrequests,cbfunc);
            },200);

          } else {

            thisStream._log("count full but ok");

            cbfunc(true);

          }

        }

      } else {

        thisStream._log("getposts gave an empty result")

      }

    }, function(ret) {

        thisStream._handleError(ret);

    });

  } else {

    cbfunc(false);

  }
    
}

TwisterTorrent.prototype._checkForUpdatesUsingGetLastHave = function (cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  var thisStream = Twister.getUser(this._name)._stream;
  var thisAccount = Twister.getAccount(this._walletusername);
    
  
  for (var username in thisAccount._torrents){

    if (thisAccount._torrents[username]._active) {              
        Twister.getUser(username)._stream._updateInProgress = true;
    }
  }
  
  thisTorrent._checkQueryAndDo( function() {

    if (thisTorrent._active) {

      var outdatedUsers =[];

      for (var username in thisAccount._torrents) {

        var resTorrent = thisAccount._torrents[username];

        if (resTorrent._active) {

          resTorrent._latestId = resTorrent._latestId;       
          resTorrent._lastUpdate = Date.now()/1000;  
          resTorrent._updateInProgress = false;

        }

        if (resTorrent._latestId==Twister.getUser(username)._stream._latestId) {

          Twister.getUser(username)._stream._lastUpdate=Date.now()/1000;
          Twister.getUser(username)._stream._updateInProgress=false;

        } else {

          outdatedUsers.push({username:username});

        }

      }

      thisTorrent._fillCacheUsingGetposts(30,outdatedUsers,function(){

          cbfunc(true);

          for (var username in thisAccount._torrents){

            if (thisAccount._torrents[username]._active) {              
                Twister.getUser(username)._stream._updateInProgress = false;
            }
          }

      });

    } else {

      cbfunc(false);

    }

    for (var username in thisAccount._torrents){

      if (thisAccount._torrents[username]._active) {              
          Twister.getUser(username)._stream._updateInProgress = false;
      }
    }

  });
    
}

TwisterTorrent.prototype.updatePostsCache = function (cbfunc) {
    
  var Twister = this._scope;

  var thisTorrent = this;
  var thisStream = Twister.getUser(this._name)._stream;

  thisStream._log("update posts cache "+thisStream._name)  

  thisTorrent._checkForUpdatesUsingGetLastHave(function(uptodate){

    if (uptodate) {
    thisStream._log("lasthaves "+thisTorrent._name+" worked") 

      cbfunc(true);

    } else {
    thisStream._log("lasthaves "+thisTorrent._name+" failed") 

      thisTorrent._fillCacheUsingGetposts(30,[{username:thisTorrent._name}],cbfunc);

    }

  });
    
}

TwisterTorrent.prototype.fillPostsCache = function (id,cbfunc) {

  var Twister = this._scope;

  var thisTorrent = this;
  var thisUser = Twister.getUser(this._name);
  var thisStream = Twister.getUser(this._name)._stream;

  thisStream._log("fill cache "+thisTorrent._name+" id "+id)  

  thisTorrent._fillCacheUsingGetposts(30,[{username:thisTorrent._name,max_id:id}],cbfunc);

}
},{"../TwisterResource.js":157,"inherits":52}],147:[function(require,module,exports){
(function (Buffer){
'use strict';

/**
 * Twister singleton class descriping the state fo the Twister network.
 * @module
 */


var TwisterResource = require("./TwisterResource.js");
var Twister = new TwisterResource("twister",{});

Twister._scope = Twister;
Twister._type = "twister";
Twister._hasParentUser = false;

Twister._userCache = {};
Twister._hashtags = {};
Twister._wallet = {};

Twister._activeDHTQueries = 0;
Twister._maxDHTQueries = 5;

Twister._signatureVerification = "background";
Twister._averageSignatureCompTime = 200;
Twister._signatureVerificationsInProgress = 0;

//default query settings:
Twister._outdatedLimit = 45;
Twister._querySettingsByType = {};
Twister._logfunc = function(){};
Twister._host = "http://user:pwd@127.0.0.1:28332";
Twister._timeout = 20000;
Twister._errorfunc = function(error){console.log("Twister error: "+error.message);};

Twister._walletType = "server";

var availableOptions = ["host","timeout","errorfunc","signatureVerification",
                        "querySettingsByType","maxDHTQueries","walletType","logfunc"];

var TwisterPromotedPosts = require("./TwisterPromotedPosts.js");
Twister._promotedPosts = new TwisterPromotedPosts(Twister);

/** @function
 * @name init 
 * @param {string} options.host endpoint for JSON-RPC queries used by default
 * @param {int} options.timeout timeout for JSON-RPC in milliseconds
 * @param {function} options.errorfunc called when JSON-RPC error occurs
 * @param {bool} options.verifySignatures possible options are "none","instant" and "background". Default is "background"
 * @param {bool} options.querySettingsByType 
 * @param {bool} options.maxDHTQueries
 */
Twister.setup = function (options) {

	for (var key in options) {
		
		if (availableOptions.indexOf(key)>-1) {
			
    		Twister["_"+key] = options[key];
			
		}
		
	}

}

/** @function
 * @name getUser 
 * @description Creates TwisterUser object if not a present in cache and return it.
 * @param {string} username
 */
Twister.getUser = function (username) {
    
    if (username) {
    
        if (Twister._userCache[username] === undefined) {

            var TwisterUser = require('./TwisterUser.js');

            Twister._userCache[username] = new TwisterUser(username,Twister);

        }

        return Twister._userCache[username];
        
    }

}

/** @function
 * @name getUser 
 * @description Creates {@link TwisterUser} object if not a present in cache and return it.
 * @param {string} username
 */
Twister.getHashtag = function (tag) {

    if (Twister._hashtags[tag] === undefined) {
    
        var TwisterHashtag = require('./TwisterHashtag.js');
        
        Twister._hashtags[tag] = new TwisterHashtag(tag,Twister);

    }
    
    return Twister._hashtags[tag];
    
}

/** @function
 * @name doHashtagPosts 
 * @description Creates {@link TwisterUser} object if not a present in cache and return it.
 * @param {string} tag
 * @param {function} cbfunc callback function. Gets called with an array of {@link TwisterPost} objects as parameter.
 * @param {Object} querySettings {@see getQuerySettings}
 */
Twister.doHashtagPosts = function (tag,cbfunc,querySettings) {
    Twister.getHashtag(tag)._checkQueryAndDo(cbfunc,querySettings);
}

/** @function
 * @name getPromotedPosts 
 * @description returns the {@link TwisterPromotedPosts} object.
 */
Twister.getPromotedPosts = function() {
	return Twister._promotedPosts;
}

/** @function
 * @name getAccount 
 * @description returns the {@link TwisterAccount} object for a given user. The user must already be loaded (except for the "guest" user). To load wallets from the server use loadServerAccounts.
 */
Twister.getAccount = function (name) {
	
	if(name=="guest" && !("guest" in Twister._wallet) && Twister._walletType=="server" ) {
	
		var TwisterAccount = require('./ServerWallet/TwisterAccount.js');
        
        Twister._wallet["guest"] = new TwisterAccount("guest",Twister);
		
	}
	
	return Twister._wallet[name];
}

/** @function
 * @name getAccounts 
 * @description returns an array with all current {@link TwisterAccount} objects. To load wallets from the server use loadServerAccounts.
 */
Twister.getAccounts = function () {
	
  var res = [];
  
  for (var acc in Twister._wallet) {
    res.push(Twister._wallet[acc]);
  }
  
  return res;
  
}

/** @function
 * @name loadAccounts 
 * @description loads available account into the wallet. 
 */
Twister.loadServerAccounts = function (cbfunc) {
	
	Twister.RPC("listwalletusers", [], function(res){
	
		var TwisterAccount = require('./ServerWallet/TwisterAccount.js');
		
		if (res.length) {
		
			for (var i=0; i<res.length; i++) {
			
				if (!(res[i] in Twister._wallet)) {
					Twister._wallet[res[i]] = new TwisterAccount(res[i],Twister);
				}
			
			}
			
		
		} else {
		
			Twister._handleError({
              message: "No wallet users found on the server.",
              code: 32081
            })
		
		}
		
		cbfunc(res)

	},  function(res){

		Twister._handleError(res);

	});

}

/** @function
 * @name importClientSideAccount 
 * @description imports an account into client side wallet. The private key is not send to any server. 
 */
Twister.importClientSideAccount = function (name,key,cbfunc) {
	
  var TwisterAccount = require('./ClientWallet/TwisterAccount.js');

  Twister._wallet[name] = new TwisterAccount(name,Twister);

  Twister._wallet[name]._privkey.setKey(key)
  Twister._wallet[name]._privkey.verifyKey(function(key){

    if(key.getStatus()=="confirmed"){
      
      if(cbfunc) cbfunc(Twister._wallet[name])
      
    }else{
      
      Twister._handleError({
        message: "Private key is in conflict with public key.",
        code: 32064
      })
      
    }
    
    
  })
  
}

/** @function
 * @name generateClientSideAccount 
 * @description generate an account in the client side wallet. The private key is not send to any server. 
 */
Twister.generateClientSideAccount = function (name,cbfunc) {
	
  var TwisterAccount = require('./ClientWallet/TwisterAccount.js');

  Twister._wallet[name] = new TwisterAccount(name,Twister);

  var newAccount = Twister._wallet[name];
  
  newAccount._privkey.makeRandomKey()
  newAccount._privkey.verifyKey(function(){

    var pubkey = newAccount._privkey.getPubKey();
    
    Twister.RPC("createrawtransaction",[name,pubkey],function(raw){
      
      console.log("raw transaction: ",raw);
      
      Twister.RPC("sendrawtransaction",raw,function(res){
        
        console.log("sent transaction",res);
      
        var twisterPubKey = Twister.getUser(username)._pubkey
        
        twisterPubKey._lastUpdate = Date.now()/1000;

        twisterPubKey._data = res;

        twisterPubKey._btcKey = Bitcoin.ECPair.fromPublicKeyBuffer(new Buffer(res,"hex"),twister_network);
        
        if(cbfunc) cbfunc(newAccount)
        
      },function(err){
      console.log("error",err);
      })
    },function(err){
      console.log("error",err);
    })
    
    
  })
  
}

/** @function
 * @name serializeCache 
 * @description Flattens the complete cache into a nested object which can be used to reload the cache later.
 */
Twister.serializeCache = function () {

    var retUser = [];
    
    for (var username in this._userCache){
        retUser.push(this._userCache[username].flatten());
    }
    
    var wallet = [];
    
    for (var username in this._wallet){
        wallet.push(this._wallet[username].flatten());
    }
    
    var hashs = [];
    
    for (var tag in this._hashtags){
        hashs.push(this._hashtags[tag].flatten());
    }
    
    var options = {};
    
    for(var i in availableOptions) {
        options[availableOptions[i]]=Twister["_"+availableOptions[i]];        
    }
    
    var promotedPosts =  this._promotedPosts.flatten();
    
    return {
        users: retUser,
        hashtags: hashs,
        options: options,
        wallet: wallet,
        promotedPosts: promotedPosts
           };
}

/** @function
 * @name serializeCache 
 * @description Reloads the cache from a flattened cache object
 */
Twister.deserializeCache = function (flatData) {

    if (flatData) {

        Twister.setup(flatData.options);
        
        if (Twister._walletType=="server") {
            var TwisterAccount = require('./ServerWallet/TwisterAccount.js');
        } 
        if (Twister._walletType=="client") {
            var TwisterAccount = require('./ClientWallet/TwisterAccount.js');
        }else {
            Twister._handleError({
              message: "Unsupported wallet type.",
              code: 32080
            })
            return;
        }

        for(var i in flatData.wallet){

            var newacc = new TwisterAccount(flatData.wallet[i].name,Twister);
            newacc.inflate(flatData.wallet[i]);
            this._wallet[flatData.wallet[i].name]=newacc;

        }        
        
        var TwisterUser = require('./TwisterUser.js');

        for(var i in flatData.users){

            var newuser = new TwisterUser(flatData.users[i].name,Twister);
            newuser.inflate(flatData.users[i]);
            this._userCache[flatData.users[i].name]=newuser;

        }

        var TwisterHashtag = require('./TwisterHashtag.js');

        for(var i in flatData.hashtags){

            var newhashtag = new TwisterHashtag(flatData.hashtags[i].name,Twister);
            newhashtag.inflate(flatData.users[i]);
            this._hashtags[flatData.hashtags[i].name]=newhashtag;

        }
                
        this._promotedPosts.inflate(flatData.promotedPosts);

    }
    
}

Twister.trimCache = function (timestamp) {
    
  for (var username in this._userCache){
      this._userCache[username].trim(timestamp);
  }

  for (var username in this._wallet){
      this._wallet[username].trim(timestamp);
  }

  for (var tag in this._hashtags){
      this._hashtags[tag].trim(timestamp);
  }
  
  this._promotedPosts.trim(timestamp);

}

Twister._activeQueryIds = {};

Twister.raiseQueryId = function (id) {

  console.log("raise id ",id)
  
  if (id) {
    if(!Twister._activeQueryIds[id]){
      Twister._activeQueryIds[id]={func:null,count:1};
    }else{
      Twister._activeQueryIds[id].count++;
    }
  }

}

Twister.bumpQueryId = function (id) {
    
  console.log("bump id ",id)
  
  if (id) {
    Twister._activeQueryIds[id].count--;
    if (Twister._activeQueryIds[id].count==0) {
      if (Twister._activeQueryIds[id].func) { 
        Twister._activeQueryIds[id].func(); 
      }
      delete Twister._activeQueryIds[id];
    }
  }
  
}

Twister.onQueryComplete = function (id, cbfunc){
  
  console.log("complete id ",id)
  
  if(!Twister._activeQueryIds[id]){
    Twister._activeQueryIds[id]={func:cbfunc,count:0};
  }else{
    Twister._activeQueryIds[id].func=cbfunc;
  }

}

module.exports = Twister;

}).call(this,require("buffer").Buffer)
},{"./ClientWallet/TwisterAccount.js":139,"./ServerWallet/TwisterAccount.js":144,"./TwisterHashtag.js":150,"./TwisterPromotedPosts.js":154,"./TwisterResource.js":157,"./TwisterUser.js":160,"buffer":177}],148:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the avatar of a {@link TwisterUser}.
 * @module 
 */
var TwisterAvatar = function (name,scope) {
    
    TwisterResource.call(this,name,scope);
  
    this._type = "avatar";
    
}

inherits(TwisterAvatar,TwisterResource);

module.exports = TwisterAvatar;

TwisterAvatar.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisUser = this._scope.getUser(this._name);

    var TwisterAvatar = require("./TwisterAvatar.js");
    
    thisUser._avatar = new TwisterAvatar(this._name,this._scope);
    
  }

}

TwisterAvatar.prototype._queryAndDo = function (cbfunc) {

    var thisResource = this;
    
    var Twister = this._scope;
    
    thisResource.dhtget([thisResource._name, "avatar", "s"],
                   
        function (result) {
         
            thisResource._updateInProgress = false;

            if (result[0]) {

                thisResource._data=result[0].p.v;
                thisResource._revisionNumber=result[0].p.seq;
                thisResource._lastUpdate=Date.now()/1000;
                cbfunc(thisResource);

            } else {
			
				thisResource._handleError({
                  message: "DHT resource is empty.",
                  code: 32052
                })
                thisResource._revisionNumber=0;
                thisResource._lastUpdate=Date.now()/1000;
                //cbfunc(thisResource);
			
			}

        }

    );   
        
}

/** @function
 * @name getUrl 
 * @description return the (data-)url of the avatar
 */
TwisterAvatar.prototype.getUrl = function () {

    return this._data;
    
}

/** @function
 * @name getUsername 
 * @description return the username of the owner of the avatar
 */
TwisterAvatar.prototype.getUsername = function () {

    return this._name;
    
}
},{"./TwisterAvatar.js":148,"./TwisterResource.js":157,"inherits":52}],149:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the followings of a {@link TwisterUser}
 * @module
 */
var TwisterFollowings = function (name,scope) {
    
    TwisterResource.call(this,name,scope);
    this._type = "followings";
    this._revisionNumber = {};
    
}

inherits(TwisterFollowings,TwisterResource);

TwisterFollowings.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisUser = this._scope.getUser(this._name);

    var TwisterFollowings = require("./TwisterFollowings.js");
    
    thisUser._followings = new TwisterFollowings(this._name,this._scope);
    
  }

}

TwisterFollowings.prototype._do= function (cbfunc) {
	this.doUsers(cbfunc);
}

TwisterFollowings.prototype._queryAndDo = function (cbfunc) {
        
  var thisResource = this;

  var Twister = this._scope;
  
  var thisStream = Twister.getUser(this._name)._stream;
  
  if (thisStream._activeTorrentUser && thisStream._activeTorrentUser==this._name && Twister._wallet[this._name]._wallettype=="server") {
    
    thisResource._log("using getfollowing rpc method")
    
    var thisAccount = Twister._wallet[this._name];
    
    thisAccount.RPC("getfollowing",[thisAccount._name],function(result){

      thisResource._data = result;
      thisResource._lastUpdate=Date.now()/1000;
      thisResource._do(cbfunc);

    },function(error){
      
      thisResource._handleError(error);
      
    });
    
  } else {
  
    var currentCounter = 1;

    thisResource._data = [];

    thisResource._lastUpdate=Date.now()/1000;

    var requestTilEmpty = function (cbfunc) {

        thisResource.dhtget([thisResource._name, "following"+currentCounter, "s"],
                       
            function (result) {

                if (result[0] && result[0].p.v[0]) {

                    for (var i = 0; i<result[0].p.v.length; i++) {

                        thisResource._data.push(result[0].p.v[i]);

                    }

                    thisResource._revisionNumber[currentCounter]=result[0].p.seq;
                  
                    currentCounter++;
                    requestTilEmpty(cbfunc)

                } else {
                
                    thisResource._do(cbfunc);
                
                }

            }


        ); 

    };  
        
    requestTilEmpty(cbfunc);
    
  }
        
}


/** @function
 * @name getNames 
 * @description returns the usernames of the following users
 */
TwisterFollowings.prototype.getNames = function () {

    return this._data;
    
}

/** @function
 * @name doUsers 
 * @description calls cbfunc with every {@link TwisterUser} object of the following users.
 * @param {function} cbfunc callback function
 */
TwisterFollowings.prototype.doUsers = function(cbfunc) {

    var Twister = this._scope;
    
    var followingNames = this.getNames();
    
	followings = [];
	
    for (var i in followingNames) {

        followings.push(Twister.getUser(followingNames[i]));

    }
	
	cbfunc(followings);

}

module.exports = TwisterFollowings;
},{"./TwisterFollowings.js":149,"./TwisterResource.js":157,"inherits":52}],150:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');


/**
 * Describes a hashtag resource.
 * @module
 */
var TwisterHashtag = function (name,scope) {
    
    TwisterResource.call(this,name,scope);
    this._type = "hashtag";
    this._data = {};
	this._hasParentUser = false;
    
}

inherits(TwisterHashtag,TwisterResource);

TwisterHashtag.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    delete this._scope._hashtags[this._name];
    
  }

}

TwisterHashtag.prototype._do = function (cbfunc) {
	this.doPosts(cbfunc);
}

TwisterHashtag.prototype._queryAndDo = function (cbfunc, querySettings) {
    
    var currentCounter = 1;
        
    var Twister = this._scope;
    
    var thisHashtag = this;
    
    thisHashtag._data = {};

    thisHashtag._lastUpdate=Date.now()/1000;
        
    thisHashtag.dhtget([thisHashtag._name, "hashtag", "m"],

        function (result) {
      
            var TwisterPost = require("./TwisterPost.js");

            for (i=0; i<result.length; i++) {

                var username = result[i].p.v.userpost.n;
                var id = result[i].p.v.userpost.k;

                thisHashtag._data[username+":post"+id]=true;                

                if (! (id in Twister.getUser(username)._stream._posts ) ) {
                
                    Twister.getUser(username)._stream._verifyAndCachePost(result[i].p.v);
                    
                }

            }
        
            thisHashtag._do(cbfunc);

        }
                        
    ); 
        
}


/** @function
 * @name doPosts 
 * @description calls cbfunc with every {@link TwisterPost} object of the hashtag.
 * @param {function} cbfunc callback function
 */
TwisterHashtag.prototype.doPosts = function (cbfunc) {

	var posts = [];
	
    for (var key in this._data) {

        var nandk = key.split(":post");
        var username = nandk[0];
        var id = parseInt(nandk[1]);
        
		posts.push(Twister.getUser(username).getPost(id));
		
    }
	
	cbfunc(posts);

}

module.exports = TwisterHashtag;
},{"./TwisterPost.js":152,"./TwisterResource.js":157,"inherits":52}],151:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the mentions of a {@link TwisterUser}.
 * @module
 */
var TwisterMentions = function (name,scope) {
    
    TwisterResource.call(this,name,scope);
    this._type = "mentions";
    this._data = {};
    
}

inherits(TwisterMentions,TwisterResource);

TwisterMentions.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisUser = this._scope.getUser(this._name);

    var TwisterMentions = require("./TwisterMentions.js");
    
    thisUser._mentions = new TwisterMentions(this._name,this._scope);
    
  }

}

TwisterMentions.prototype._do = function (cbfunc) {
	this.doPosts(cbfunc);
}

TwisterMentions.prototype._queryAndDo = function (cbfunc) {
    
    var currentCounter = 1;
        
    var Twister = this._scope;
    
    var thisMentions = this;
    
    var thisUser = Twister.getUser(this._name);

    thisMentions._data = {};

    thisMentions._lastUpdate=Date.now()/1000;
        
    thisMentions.dhtget([thisUser.getUsername(), "mention", "m"],

        function (result) {

            var TwisterPost = require("./TwisterPost.js");

            for (i=0; i<result.length; i++) {

                var username = result[i].p.v.userpost.n;
                var id = result[i].p.v.userpost.k;

                thisMentions._data[username+":post"+id]=true;                

                if (! (id in Twister.getUser(username)._stream._posts ) ) {
                
                    Twister.getUser(username)._stream._verifyAndCachePost(result[i].p.v);
                    
                }

            }
        
            thisMentions._do(cbfunc);

        }
                        
    ); 
        
}

/** @function
 * @name doPosts 
 * @description calls cbfunc with every {@link TwisterPost} object of the mentions.
 * @param {function} cbfunc callback function
 */
TwisterMentions.prototype.doPosts = function (cbfunc) {

	var posts = [];
	
    for (var key in this._data) {

        var nandk = key.split(":post");
        var username = nandk[0];
        var id = parseInt(nandk[1]);
        
		posts.push(Twister.getUser(username).getPost(id));
		
    }
	
	cbfunc(posts);

}

module.exports = TwisterMentions;
},{"./TwisterMentions.js":151,"./TwisterPost.js":152,"./TwisterResource.js":157,"inherits":52}],152:[function(require,module,exports){
"use strict";

var inherits = require('inherits');
var TwisterResource = require('./TwisterResource.js');
var TwisterReplies = require('./TwisterReplies.js');
var TwisterRetwists = require('./TwisterRetwists.js');

/**
 * Describes a single post of a {@link TwisterUser}.
 * @module
 */
function TwisterPost(data,signature,scope) {
    
    var name = data.n;
    var id = data.k;
    
    TwisterResource.call(this,name,scope);
    
    this._type = "post";
    this._data = data;
    this._signature = signature;
	this._isPromotedPost = false;
    this._replies = new TwisterReplies(name,id,scope);
    this._retwists = new TwisterRetwists(name,id,scope);
    
}

inherits(TwisterPost,TwisterResource);

module.exports = TwisterPost;

TwisterPost.prototype.flatten = function () {

    var flatData = TwisterResource.prototype.flatten.call(this);
    
    flatData.retwists = this._retwists.flatten();
    flatData.replies = this._replies.flatten();
  
    flatData.isPromotedPost = this._isPromotedPost;
    flatData.signature = this._signature;
        
    return flatData;

}

TwisterPost.prototype.inflate = function (flatData) {
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._replies.inflate(flatData.replies);
    this._retwists.inflate(flatData.retwists);

    this._signature = flatData.signature;
    this._isPromotedPost = flatData.isPromotedPost;
  
}

TwisterPost.prototype.trim = function (timestamp) {

  var keepPost = false;
  
  this._replies.trim(timestamp);
  keepPost = keepPost || this._replies.inCache();

  this._retwists.trim(timestamp);
  keepPost = keepPost || this._retwists.inCache();

  if ( !keepPost && ( !timestamp || timestamp > this.getTimestamp() ) ){

    if (this._isPromotedPost) {
      var thisStream = this._scope._promotedPosts;
    } else {
      var thisStream = this._scope.getUser(this._name)._stream;
    }

    delete thisStream._posts[this.getId()];

    thisStream._latestId = Math.max.apply(Math,Object.keys(thisStream._posts));

  }

}

TwisterPost.prototype._do = function (cbfunc) {
    cbfunc(this);
}

TwisterPost.prototype._checkQueryAndDo = function (cbfunc) {
    cbfunc(this);
}

TwisterPost.prototype._queryAndDo = function (cbfunc) {
    cbfunc(this);
}

/** @function
 * @name getId 
 * @description returns the post id.
 */
TwisterPost.prototype.getId = function () {
    return this._data.k;
}

/** @function
 * @name getId 
 * @description returns the post id of the last post.
 */
TwisterPost.prototype.getLastId = function () {
	if (!this._isPromotedPost) {
		return this._data.lastk;
	} else {
		return this._data.k-1;
	}
}


/** @function
 * @name doPreviousPost 
 * @description calls cbfunc with the previous post as argument. Queries the post if not in cache.
 * @param cbfunc {function} 
 * @param querySettings {Object} 
 */
TwisterPost.prototype.doPreviousPost = function (cbfunc,querySettings) {
	
	if (!this._isPromotedPost) {
		this._scope.getUser(this.getUsername()).doPost(this.getLastId(),cbfunc,querySettings);
	} else {
      //console.log(this)
		this._scope.getPromotedPosts()._doPost(this.getLastId(),cbfunc,querySettings);
	}
	
}

/** @function
 * @name getTimestamp 
 * @description returns the timestamp of the post.
 */
TwisterPost.prototype.getTimestamp = function () {
    return this._data.time;
}


/** @function
 * @name getContent 
 * @description returns the content of the post.
 */
TwisterPost.prototype.getContent = function () {
    return this._data.msg;
}


/** @function
 * @name getUsername 
 * @description returns the user that posted the post.
 */
TwisterPost.prototype.getUsername = function () {
    return this._data.n;
}

/** @function
 * @name getUsername 
 * @description returns the {@link TwisterUser} object of the user that posted the post.
 */
TwisterPost.prototype.getUser = function () {
    return this._scope.getUser(this._data.n);
}


/** @function
 * @name isReply 
 * @description returns true if the postis an reply.
 */
TwisterPost.prototype.isReply = function () {
    return ("reply" in this._data);
}


/** @function
 * @name getReplyUsername 
 * @description returns the username of the user to which this post is a reply.
 */
TwisterPost.prototype.getReplyUsername = function () {
    return this._data.reply.n;
}


/** @function
 * @name getReplyId 
 * @description returns the id of the post that this post is replying to.
 */
TwisterPost.prototype.getReplyId = function () {
    return this._data.reply.k;
}


/** @function
 * @name doReplies 
 * @description calls cbfunc for every post that is a reply to this post.
 * @param cbfunc {function} 
 * @param querySettings {Object} 
 */
TwisterPost.prototype.doReplies = function (cbfunc,querySettings) {
    this._replies._checkQueryAndDo(cbfunc,querySettings);  
}

/** @function
 * @name doPostRepliedTo 
 * @description calls cbfunc with the post that this post is replying to.
 * @param cbfunc {function} 
 * @param querySettings {Object} 
 */
TwisterPost.prototype.doPostRepliedTo = function (cbfunc,querySettings) {
    this._scope.getUser(this.getReplyUsername()).doPost(this.getReplyId(),cbfunc,querySettings);
}

/** @function
 * @name isRetwist 
 * @description returns true if the postis an rewtist.
 */
TwisterPost.prototype.isRetwist = function () {
    return ("rt" in this._data);
}

/** @function
 * @name isRetwist 
 * @description returns true if the postis an rewtist.
 */
TwisterPost.prototype.isRetwistWithComment = function () {
    return ("rt" in this._data && "msg" in this._data);
}


/** @function
 * @name getRetwistedId 
 * @description returns the id of the retwisted post.
 */
TwisterPost.prototype.getRetwistedId = function () {
    return this._data.rt.k;
}

/** @function
 * @name getRetwistedlastId 
 * @description returns the last id of the rewisted post.
 */
TwisterPost.prototype.getRetwistedlastId = function () {
    return this._data.rt.lastk;
}

/** @function
 * @name getRetwistedTimestamp 
 * @description returns the timestamp of the retwisted post
 */
TwisterPost.prototype.getRetwistedTimestamp = function () {
    return this._data.rt.time;
}

/** @function
 * @name getRetwistedContent 
 * @description returns content of the rwteisted post
 */
TwisterPost.prototype.getRetwistedContent = function () {
    return this._data.rt.msg;
}

/** @function
 * @name getRetwistedUser 
 * @description returns the username of the retwisted post.
 */
TwisterPost.prototype.getRetwistedUsername = function () {
    return this._data.rt.n;
}

/** @function
 * @name doRetwistingPosts 
 * @description calls cbfunc with an array of the post that are retwisting this post.
 * @param cbfunc {function} 
 * @param querySettings {Object} 
 */
TwisterPost.prototype.doRetwistingPosts = function (cbfunc,querySettings) {
    this._retwists._checkQueryAndDo(cbfunc,querySettings);
}


/** @function
 * @name getRetwistedPost 
 * @description return an uncached and unverified {@link TwisterPost} object of the retwisted post.
 * @param cbfunc {function} 
 */
TwisterPost.prototype.getRetwistedPost = function (cbfunc) {
    
    return new TwisterPost(this._data.rt,this._data.sig_rt,this._scope);
    
}

/** @function
 * @name doRetwistedPost 
 * @description Verifies and caches the retwisted post and calls cbfunc with it.
 * @param cbfunc {function} 
 */
TwisterPost.prototype.doRetwistedPost = function (cbfunc) {
    
    var Twister = this._scope;
    
    var id = this._data.rt.k;
    
    if (!Twister.getUser(this._data.rt.n)._posts[id]) {
        
        var payload= {
            userpost: this._data.rt,
            sig_userpost: this._data.sig_rt
        };
        
        Twister.getUser(this._data.rt.n)._verifyAndCachePost(payload,cbfunc);
        
    } else {

        cbfunc(Twister.getUser(this._data.rt.n)._posts[id]);
        
    }
    
}

},{"./TwisterReplies.js":156,"./TwisterResource.js":157,"./TwisterRetwists.js":158,"inherits":52}],153:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the profile of a {@link TwisterUser}.
 * @class
 */
var TwisterProfile = function (name,scope) {
    
    TwisterResource.call(this,name,scope);
    
    this._type = "profile";

    
}

inherits(TwisterProfile,TwisterResource);

module.exports = TwisterProfile;

TwisterProfile.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisUser = this._scope.getUser(this._name);

    var TwisterProfile = require("./TwisterProfile.js");
    
    thisUser._profile = new TwisterProfile(this._name,this._scope);
    
  }

}

TwisterProfile.prototype._queryAndDo = function (cbfunc) {

    var thisResource = this;
    
    var Twister = this._scope;
    
    //console.log("before dhtget"+thisResource._name+" "+thisResource._type)
                                
    thisResource.dhtget([thisResource._name, "profile", "s"],
                   
        function (result) {

            if (result[0]) {

                thisResource._data=result[0].p.v;
                thisResource._revisionNumber=result[0].p.seq;
                thisResource._lastUpdate=Date.now()/1000;
                cbfunc(thisResource);

            } else {
			
				thisResource._handleError({
                  message: "DHT resource is empty.",
                  code: 32052
                })
                thisResource._revisionNumber=0;
                thisResource._lastUpdate=Date.now()/1000;
                //cbfunc(thisResource);
			
			}

        }

    );   
        
}

/** @function
 * @name getAllFields 
 * @description returns the complete profile as Object
 */
TwisterProfile.prototype.getAllFields = function () {

    return this._data;
    
}

TwisterProfile.prototype.getUsername = function () {
  return this._name;
}

/** @function
 * @name getField 
 * @description returns a single field of the profile
 */
TwisterProfile.prototype.getField = function (fieldname) {
  
  if (this._data) {
    return this._data[fieldname];
  } else { return null }
    
}
},{"./TwisterProfile.js":153,"./TwisterResource.js":157,"inherits":52}],154:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the promoted posts that are part of the twister blockchain.
 * @class
 */
var TwisterPromotedPosts = function (scope) {
    
    var name = "promoted";
	this._hasParentUser = false;
	
    TwisterResource.call(this,name,scope);
    
    this._latestId = -1;
    this._posts = {};
    
    this._type = "promotedposts";

}

inherits(TwisterPromotedPosts,TwisterResource);

TwisterPromotedPosts.prototype.flatten = function () {

    var flatData = TwisterResource.prototype.flatten.call(this);
    
    var flatPosts = [];
    
    for (var id in this._posts){
        flatPosts.push(this._posts[id].flatten());
    }
    
    flatData.posts = flatPosts;
    flatData.latestId  = this._latestId;    
    
    return flatData;

}

TwisterPromotedPosts.prototype.inflate = function (flatData) {
    
    var TwisterPost = require('./TwisterPost.js');
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._latestId = flatData.latestId;
    
    for(var i = 0; i < flatData.posts.length; i++){
        
        var newpost = new TwisterPost(flatData.posts[i].data,flatData.posts[i].signature,this._scope);
        newpost.inflate(flatData.posts[i]);
        this._posts[newpost.getId()]=newpost;
    
    }

}

TwisterPromotedPosts.prototype.trim =  function (timestamp) {
  
  for (var id in this._posts) {
      
    if (id!=this._latestId) {
      
      this._posts[id].trim(timestamp);
      
    }

  }
  
  var postCount = Object.keys(this._posts).length;
  
  if ( postCount<=1 && (!timestamp || timestamp > this._lastUpdate) ){
    
    if (this._posts[this._latestId]) {

      this._posts[this._latestId].trim();

    }
    
    var postCount = Object.keys(this._posts).length;

    if (postCount==0) {

      var TwisterPromotedPosts = require("./TwisterPromotedPosts.js");

      this._scope._promotedPosts = new TwisterPromotedPosts(this._name,this._scope);
      
    }

  } 
  
}

TwisterPromotedPosts.prototype._do =  function (cbfunc) {
    
    this._doPost(this._latestId,cbfunc);
    
}

TwisterPromotedPosts.prototype._queryAndDo = function (cbfunc) {
    	
    var thisResource = this;
        
	thisResource.RPC("getspamposts", [ 30 ], function(res) {
            		
			if (res.length>0) {

				for (var i = 0; i<res.length; i++) {

					thisResource._verifyAndCachePost(res[i],function(newpost){

						if ( newpost.getId() > thisResource._latestId ) {

							thisResource._latestId = newpost.getId();
							thisResource._lastUpdate = Date.now()/1000;

						}

					});

				}
				
				thisResource._do(cbfunc);

			} 

		}, function(ret) {

			thisResource._handleError(ret);

		}
					 
	);
 
        
}

TwisterPromotedPosts.prototype._verifyAndCachePost =  function (payload,cbfunc) {
	
    var Twister = this._scope;
        
    var thisResource = this;
    
    var newid = payload.userpost.k;
    var payloadUser = payload.userpost.n;
    
    if( !( newid in thisResource._posts) ) {

		var signatureVerification = thisResource.getQuerySetting("signatureVerification");

        var TwisterPost = require('./TwisterPost.js');

        var newpost = new TwisterPost(payload.userpost,payload.sig_userpost,thisResource._scope);

		newpost._isPromotedPost = true;
		
        thisResource._posts[newpost.getId()] = newpost;
        
        if ( thisResource._latestId<newpost.getId() ) {
        
            thisResource._latestId=newpost.getId();
        
        }
        
        if (cbfunc) {
          
            newpost._verified = true;
            
            cbfunc(newpost);

        } 
      
    }

}

TwisterPromotedPosts.prototype._doPost = function (id,cbfunc) {

    var Twister = this._scope;
    
    if (id && id>0) {

        if (id in this._posts){
            
            cbfunc(this._posts[id])
            
        } else {
            
            var thisResource = this;
            
            thisResource.RPC("getspamposts", [ 30 , id ], function(res) {
            		
					if (res.length>0) {

						for (var i = 0; i<res.length; i++) {

							thisResource._verifyAndCachePost(res[i]);

						}

						cbfunc(thisResource._posts[id])

					} 

				}, function(ret) {

					thisResource._handleError(ret);

				}

			);
            
        }
        
    }
    
};


TwisterPromotedPosts.prototype.doLatestPostsUntil = function (cbfunc, querySettings) {

  Twister._promotedPosts._checkQueryAndDo(function doUntil(post){

    var retVal = cbfunc(post);

    if( post.getId()!=1 && retVal!==false ) { 

      post.doPreviousPost(doUntil, querySettings); 

    }

  }, querySettings);
	
}

module.exports = TwisterPromotedPosts;


},{"./TwisterPost.js":152,"./TwisterPromotedPosts.js":154,"./TwisterResource.js":157,"inherits":52}],155:[function(require,module,exports){
(function (Buffer){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

var Bitcoin = require('bitcoinjs-lib');
var Crypto = require('crypto');
var buffer = require('buffer').Buffer;
var bencode = require('bencode');


var twister_network = Bitcoin.networks.bitcoin;

twister_network.messagePrefix= '\x18twister Signed Message:\n';

/**
 * Describes the public key of a user.
 * @class
 */
var TwisterPubKey = function (name,scope) {
    
    this._name = name;
    this._data =  null;
    this._btcKey =  null;

    TwisterResource.call(this,name,scope);   
    
    this._type = "pubkey";
  
    this._verified = true;

    
}

inherits(TwisterPubKey,TwisterResource);

module.exports = TwisterPubKey;

TwisterPubKey.prototype.inflate = function (flatData) {

    TwisterResource.prototype.inflate.call(this,flatData);
    
    if (this._data) {
    
        this._btcKey = Bitcoin.ECPair.fromPublicKeyBuffer(new Buffer(this._data,"hex"),twister_network);
    
    }

}

TwisterPubKey.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisUser = this._scope.getUser(this._name);

    var TwisterPubKey = require("./TwisterPubKey.js");
    
    thisUser._pubkey = new TwisterPubKey(this._name,this._scope);
    
  }

}

TwisterPubKey.prototype._queryAndDo = function (cbfunc) {
	
    var thisResource = this;
            
    thisResource.RPC("dumppubkey", [ thisResource._name ], function(res) {
      
        if(res.length) {
      
          thisResource._lastUpdate = Date.now()/1000;

          thisResource._data = res;
          
          thisResource._btcKey = Bitcoin.ECPair.fromPublicKeyBuffer(new Buffer(res,"hex"),twister_network);

          if (cbfunc) {

              cbfunc(thisResource);

          }
          
        } else { 
          
          thisResource._handleError({
            message: "Public key not available on server.",
            code: 32061
          }) 
        
        }
		
    }, function(ret) {

        thisResource._handleError(ret);

    });     
        
}

TwisterPubKey.prototype.getKey = function () {

    return this._data;
    
}

TwisterPubKey.prototype.verifySignature = function (message_ori, signature_ori, cbfunc) {

  var verifySignatures = (this.getQuerySetting("signatureVerification")!="none");
  
  if(verifySignatures){
  
    var thisResource = this;
  
    var signature = JSON.parse(JSON.stringify(signature_ori));

    var message = JSON.parse(JSON.stringify(message_ori));

    if ("v" in message && (typeof message.v)=="object"){ 
        if("sig_userpost" in message.v) {
            message.v.sig_userpost = new Buffer(message.v.sig_userpost, 'hex');
        }
        if ("userpost" in message.v) { 
            if ("sig_rt" in message.v.userpost) {
                message.v.userpost.sig_rt = new Buffer(message.v.userpost.sig_rt, 'hex');
            }
        }
    }

    if ("sig_rt" in message) {
        message.sig_rt = new Buffer(message.sig_rt, 'hex');
    }

    //console.log("verifying message")

    var Twister = this._scope;

    var thisPubKey=this._btcKey;

    Twister._signatureVerificationsInProgress++;

    var timeout=Twister._signatureVerificationsInProgress*Twister._averageSignatureCompTime*4;

    setTimeout(function(){


        var startTime = Date.now();

        message = bencode.encode(message);

        try {
            signature = new Buffer(signature, 'hex');
          try {
            
            var retVal = Bitcoin.message.verify(thisPubKey.getAddress(), signature, message, twister_network);
          } catch(e) {
            var retVal = false;	
            thisResource._log("verification went sideways");
            console.log(e);
          }
        } catch(e) {
          var retVal = false;	
          thisResource._log("signature is malformed");
        }


        var compTime = Date.now()-startTime;

        Twister._averageSignatureCompTime = 0.9*Twister._averageSignatureCompTime + 0.1*compTime;
        
        Twister._signatureVerificationsInProgress--;

        cbfunc(retVal)

    },timeout);

  }else{
    cbfunc(true);
  }

}
}).call(this,require("buffer").Buffer)
},{"./TwisterPubKey.js":155,"./TwisterResource.js":157,"bencode":1,"bitcoinjs-lib":44,"buffer":177,"crypto":183,"inherits":52}],156:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the replies to a {ælink TwisterPost}.
 * @class
 */
var TwisterReplies = function (name,id,scope) {
    
    TwisterResource.call(this,name,scope);
    this._type = "replies";
    this._id = id;
    this._data = {};
    
}

inherits(TwisterReplies,TwisterResource);

TwisterReplies.prototype.flatten = function () {

    var flatData = TwisterResource.prototype.flatten.call(this);
    
    flatData.id  = this._id;
    
    return flatData;


}

TwisterReplies.prototype.inflate = function (flatData) {
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._id = flatData.id;

}

TwisterReplies.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisPost = this._scope.getUser(this._name).getPost(this._id);

    var TwisterReplies = require("./TwisterReplies.js");
    
    thisPost._replies = new TwisterReplies(this._name,this._id,this._scope);
    
  }

}

TwisterReplies.prototype._do = function (cbfunc) {
	this.doPosts(cbfunc);
}

TwisterReplies.prototype._queryAndDo = function (cbfunc) {
    
    var currentCounter = 1;
        
    var Twister = this._scope;
    
    var thisReplies = this;
    
    var thisUser = Twister.getUser(this._name);

    thisReplies._data = {};

    thisReplies._lastUpdate=Date.now()/1000;
    
    thisReplies.dhtget([thisUser.getUsername(), "replies"+thisReplies._id, "m"],

        function (result) {

            var TwisterPost = require("./TwisterPost.js");

            for (i=0; i<result.length; i++) {

                var username = result[i].p.v.userpost.n;
                var id = result[i].p.v.userpost.k;

                thisReplies._data[username+":post"+id]=true;                

                if (! (id in Twister.getUser(username)._stream._posts ) ) {
                
                    Twister.getUser(username)._stream._verifyAndCachePost(result[i].p.v);
                    
                }

            }

            thisReplies._do(cbfunc);

        }
                        
    ); 
        
}

TwisterReplies.prototype.doPosts = function (cbfunc) {

    var posts = [];
	
    for (var key in this._data) {

        var nandk = key.split(":post");
        var username = nandk[0];
        var id = parseInt(nandk[1]);
        
		posts.push(Twister.getUser(username).getPost(id));
		
    }
	
	cbfunc(posts);

}

module.exports = TwisterReplies;
},{"./TwisterPost.js":152,"./TwisterReplies.js":156,"./TwisterResource.js":157,"inherits":52}],157:[function(require,module,exports){
"use strict";

/**
 * General resource class. Inherited by all objects inside twister-lib-js.
 * @class
 */
function TwisterResource (name,scope) {

    this._type = "none";
    this._scope = scope;
    this._name = name;
	this._hasParentUser = true;
  
    this._stash = null;
	
    this._data = null;
    this._verified = false;
    this._lastUpdate = -1;
    this._querySettings = {};
	this._revisionNumber = null;
    
    this._updateInProgress = false;
    this._activeQuerySettings = {};

}

module.exports = TwisterResource;

TwisterResource.prototype.flatten = function () {

    return { 
        lastUpdate: this._lastUpdate,
        verified: this._verified,
        querySettings: this._querySettings,
        revisionNumber: this._revisionNumber,
        name: this._name,
        data: this._data
    };

}

TwisterResource.prototype.inflate = function (flatData) {
    
    this._lastUpdate = flatData.lastUpdate;
	this._verified = flatData.verified;
	this._querySettings = flatData.querySettings;
	this._revisionNumber = flatData.revisionNumber;
    this._name = flatData.name;
    this._data = flatData.data;
	
	if (!this._verified) {this._lastUpdate=-1;}

}

TwisterResource.prototype._do =  function (cbfunc) {

    cbfunc(this);

}

TwisterResource.prototype.inCache = function () {
    return (this._lastUpdate>0);
}

/**
 * Checks whether cached resource is outdated and invokes an update if needed. Calls cbfunc on the resource when done.
 * @function
 * @param {function} cbfunc callback function
 * @param {Object} querySettings
 */
TwisterResource.prototype._checkQueryAndDo = function (cbfunc,querySettings) {
    
    if (querySettings===undefined) {querySettings={};} 
    //else {console.log(querySettings)}
    
    var Twister = this._scope;

    var thisResource = this;
        
    if (!thisResource._updateInProgress) {
        
        thisResource._activeQuerySettings = JSON.parse(JSON.stringify(querySettings));
        thisResource._updateInProgress = true;
        if(thisResource._activeQuerySettings["queryId"]) Twister.raiseQueryId(thisResource._activeQuerySettings["queryId"]);

        var outdatedTimestamp = 0;
      
        outdatedTimestamp = Date.now()/1000 - thisResource.getQuerySetting("outdatedLimit");    

        if ( this._lastUpdate > outdatedTimestamp ){
            
            thisResource._do(cbfunc);
            
            thisResource._log("resource present in cache");
          
            if(thisResource._activeQuerySettings["queryId"]) Twister.bumpQueryId(thisResource._activeQuerySettings["queryId"]);
            thisResource._activeQuerySettings = {};
            thisResource._updateInProgress = false;

        } else {
              
            thisResource._log("resource not in cache. querying");
            
            thisResource._queryAndDo(function(newresource){
                
                thisResource._do(cbfunc);
                
                if(thisResource._activeQuerySettings["queryId"]) Twister.bumpQueryId(thisResource._activeQuerySettings["queryId"]);
                thisResource._activeQuerySettings = {};
                thisResource._updateInProgress = false;
            
            });
            
        }

    } else {
      
        thisResource._log("update in progress "+thisResource._type+" "+thisResource._name)
        
        setTimeout(function(){
        
            thisResource._checkQueryAndDo(cbfunc,querySettings);
            
        },200);
        
    }

} 

/**
 * Retrieve currently set query setting.
 * @function
 * @param {string} settings
 */
TwisterResource.prototype.getQuerySetting = function (setting) {

	//console.log(setting,this._activeQuerySettings);
	
    var Twister = this._scope;
    
    if (setting in this._activeQuerySettings) {
        return this._activeQuerySettings[setting];
    }
    
    if (setting in this._querySettings) {
        return this._querySettings[setting];
    }
    
    //console.log(this._type,Twister._querySettingsByType)
  
    if (setting in Twister._querySettingsByType && this._type in Twister._querySettingsByType[setting]) {
        return Twister._querySettingsByType[setting][this._type];
    }
    
    if (this._hasParentUser && setting in Twister.getUser(this._name)._querySettings) {
        return Twister.getUser(this._name)._querySettings[setting];
    }
    
    if ( ("_"+setting) in Twister) {
        return Twister[("_"+setting)];
    }
    
    this._handleError({
      message:"Unknown query setting was requested.",
      code: 32051
    });

}

TwisterResource.prototype.setQuerySettings = function (settings) {

    for (var key in settings) {
		
		this._querySettings[key] = settings[key];
		
	}

}

TwisterResource.prototype._handleError = function (error) {
    
    this._updateInProgress = false;
    this.getQuerySetting("errorfunc").call(this,error);
    if(this._activeQuerySettings["queryId"])  Twister.bumpQueryId(this._activeQuerySettings["queryId"]);
    this._activeQuerySettings={};
  
}

TwisterResource.prototype._log = function (log) {
    
    this.getQuerySetting("logfunc").call(this,log);
    
}

TwisterResource.prototype.RPC = function (method, params, resultFunc, errorFunc) {
    
	var thisResource = this;
  
    thisResource._log("calling JSON-RPC "+method+" "+JSON.stringify(params));
	
	if (typeof errorFunc != "function") {
	
		thisResource._activeQuerySettings = errorFunc;
	
	}
    
	//this._activeQuerySettings["method"]=method;
	//this._activeQuerySettings["params"]=params;
	
	//console.log("rpc by "+this._name+" : "+method+" "+JSON.stringify(this._activeQuerySettings))
	
    if ( (typeof $ == "function") && ( typeof $.JsonRpcClient == "function") ) {
        
        var foo = new $.JsonRpcClient({ 
        ajaxUrl: this.getQuerySetting("host"),
        timeout: this.getQuerySetting("timeout")
        });
        foo.call(method, params,
            function(ret) { if(typeof resultFunc === "function") resultFunc(ret); },
            function(ret) { if(typeof errorFunc === "function" && ret != null) errorFunc(ret); }
        );
        
    } else {
                    
        var request = require('request');
        request({
          
            uri: this.getQuerySetting("host"),
            method: "POST",
            timeout: this.getQuerySetting("timeout"),
            followRedirect: true,
            maxRedirects: 10,
            body: '{"jsonrpc": "2.0", "method": "'+method+'", "params": '+JSON.stringify(params)+', "id": 0}'
          
        }, function(error, response, body) {
            
            if (error) { 
				                
                thisResource._handleError({
                    message: "Host not reachable.",
                    data: error.code,
                    code: 32090                    
                  })
			
			} else {
              
              if (response.statusCode<200 || response.statusCode>299) {
                    
                  thisResource._handleError({
                    message: "Request was not processed successfully (http error: "+response.statusCode+").",
                    data: response.statusCode,
                    code: 32091                    
                  })
                  
              } else {
              
                try {
                  
                  var res = JSON.parse(body);
                  
                  
                } catch (err) {

                  thisResource._handleError({
                    message: "An error occurred while parsing the JSON response body.",
                    code: 32092
                  })

                  var res = null;
                }

                if(res){
                  if (res.error) {
                    thisResource._handleError(res.error);
                  } else {
                    resultFunc(res.result);
                  }
                }
                                
              } 
                
            }
            
        });
        
    }
      
}

TwisterResource.prototype.dhtget = function (args,cbfunc) {

    var Twister = this._scope;
    
    var thisResource = this;
  
    if ( Twister._activeDHTQueries < Twister._maxDHTQueries ) {
    
        Twister._activeDHTQueries++;
        
        thisResource.RPC("dhtget", args, function(res){
            
            Twister._activeDHTQueries--;
            
            thisResource._log("dhtget result: "+JSON.stringify(res));
          
            if (res[0]) {
				
				var signatureVerification = thisResource.getQuerySetting("signatureVerification");
				
                var signingUser = res[0].sig_user;
                
                if (signatureVerification!="none" 
					&& (args[2]=="m" || (args[0]==signingUser) ) ) {
                  
                    thisResource._log("issuing signature verification");
                  
                    var stash = JSON.parse(JSON.stringify(thisResource.flatten()));
                
                    if (signatureVerification=="background") { cbfunc(res); }

                    Twister.getUser(signingUser)._doPubKey(function(pubkey){

                        pubkey.verifySignature(res[0].p,res[0].sig_p,function(verified){


                            if (verified) {

                                thisResource._verified = true;
								
								if (signatureVerification=="instant") { cbfunc(res); }
								
                            } else {

                                thisResource.inflate(stash);
                              
                                thisResource._handleError({
                                  message: "DHT resource signature could not be verified",
                                  code: 32050
                                })

                            }

                        });

                    });
                    
                } else { 
                  thisResource._verified = true;
                  thisResource._log("no signature verification needed");
                  cbfunc(res); 
                }
                
            } else { 
              thisResource._log("dht resource is empty"); 
              cbfunc(res);
            }
            
        }, function(error) {
            
            Twister._activeDHTQueries--;
            thisResource._handleError(error);
            
        });
        
    } else {
                
        setTimeout(function(){
        
            thisResource.dhtget(args,cbfunc);
            
        },200);
    
    }

}
},{"request":53}],158:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');

/**
 * Describes the retwists of a {@link TwisterPost}.
 * @class
 */
var TwisterRetwists = function (name,id,scope) {
    
    TwisterResource.call(this,name,scope);
    this._type = "retwists";
    this._id = id;
    this._data = {};
    
}

inherits(TwisterRetwists,TwisterResource);

TwisterRetwists.prototype.flatten = function () {

    var flatData = TwisterResource.prototype.flatten.call(this);
    
    flatData.id  = this._id;
    
    return flatData;


}

TwisterRetwists.prototype.inflate = function (flatData) {
    
    TwisterResource.prototype.inflate.call(this,flatData);
    
    this._id = flatData.id;

}

TwisterRetwists.prototype.trim = function (timestamp) {

  if (!timestamp || timestamp > this._lastUpdate){

    var thisPost = this._scope.getUser(this._name).getPost(this._id);

    var TwisterRetwists = require("./TwisterRetwists.js");
    
    thisPost._retwists = new TwisterRetwists(this._name,this._id,this._scope);
    
  }

}

TwisterRetwists.prototype._do = function (cbfunc) {
	this.doPosts(cbfunc);
}

TwisterRetwists.prototype._queryAndDo = function (cbfunc) {
    
    var currentCounter = 1;
        
    var Twister = this._scope;
    
    var thisRetwists = this;
    
    var thisUser = Twister.getUser(this._name);

    thisRetwists._data = {};

    thisRetwists._lastUpdate=Date.now()/1000;
        
    thisRetwists.dhtget([thisUser.getUsername(), "rts"+thisRetwists._id, "m"],

        function (result) {

            var TwisterPost = require("./TwisterPost.js");

            for (i=0; i<result.length; i++) {

                var username = result[i].p.v.userpost.n;
                var id = result[i].p.v.userpost.k;

                thisRetwists._data[username+":post"+id]=true;                

                if (! (id in Twister.getUser(username)._stream._posts ) ) {
                
                    Twister.getUser(username)._stream._verifyAndCachePost(result[i].p.v);
                    
                }

            }
        
            thisRetwists._do(cbfunc);

        }
                        
    ); 
        
}

TwisterRetwists.prototype.doPosts = function (cbfunc) {

    var posts = [];
	
    for (var key in this._data) {

        var nandk = key.split(":post");
        var username = nandk[0];
        var id = parseInt(nandk[1]);
        
		posts.push(this._scope.getUser(username).getPost(id));
		
    }
	
	cbfunc(posts);
}

module.exports = TwisterRetwists;
},{"./TwisterPost.js":152,"./TwisterResource.js":157,"./TwisterRetwists.js":158,"inherits":52}],159:[function(require,module,exports){
var inherits = require('inherits');

var TwisterResource = require('./TwisterResource.js');
//var TwisterTorrent = require('./TwisterTorrent.js');

/**
 * Describes the stream of posts of a {@link TwisterUser}.
 * @class
 */
var TwisterStream = function (name,scope) {
    
    TwisterResource.call(this,name,scope);
    
    this._latestId = -1;
    this._posts = {};
    this._verified = true; //post are verified individually
    
    this._activeTorrentUser = null;
    
    this._type = "stream";

}

inherits(TwisterStream,TwisterResource);

TwisterStream.prototype.trim = function (timestamp) {

  for (var id in this._posts) {
      
    if (id!=this._latestId) {
      
      this._posts[id].trim(timestamp);
      
    }

  }
  
  var postCount = Object.keys(this._posts).length;
  
  if ( postCount<=1 && (!timestamp || timestamp > this._lastUpdate) && !this._activeTorrentUser ) {
    
    if (this._posts[this._latestId]) {

      this._posts[this._latestId].trim();

    }
    
    var postCount = Object.keys(this._posts).length;

    if (postCount==0) {
    
      var thisUser = this._scope.getUser(this._name);

      var TwisterStream = require("./TwisterStream.js");

      thisUser._stream = new TwisterStream(this._name,this._scope);
      
    }

  } 

}

TwisterStream.prototype.flatten = function () {

    var flatData = TwisterResource.prototype.flatten.call(this);
    
    var flatPosts = [];
    
    for (var id in this._posts){
        flatPosts.push(this._posts[id].flatten());
    }
    
    flatData.posts = flatPosts;
    flatData.latestId  = this._latestId;
    flatData.activeTorrentUser  = this._activeTorrentUser;
    
    return flatData;

}

TwisterStream.prototype.inflate = function (flatData) {
    
  var Twister = this._scope;

  var TwisterPost = require('./TwisterPost.js');

  TwisterResource.prototype.inflate.call(this,flatData);

  this._latestId = flatData.latestId;
  this._activeTorrentUser = flatData.activeTorrentUser;
  
  for(var i in flatData.posts){

    if (flatData.posts[i].verified) {

      var newpost = new TwisterPost(flatData.posts[i].data,flatData.posts[i].signature,Twister);
      newpost.inflate(flatData.posts[i]);
      this._posts[newpost.getId()]=newpost;

    } else if (flatData.posts[i].data.k==this._latestId) {

      this._latestId = -1;
      this._lastUpdate = -1;

    }

  }

}

TwisterStream.prototype._do =  function (cbfunc) {
    
    this._doPost(this._latestId,cbfunc);
    
}

TwisterStream.prototype.updateCache = function (cbfunc) {
  
  var Twister = this._scope;
  
  if (this._activeTorrentUser) {
    Twister._wallet[this._activeTorrentUser]._torrents[this._name].updatePostsCache(cbfunc);
  } else {
    this._log("user has no active torrent")
    cbfunc(false);
  }

}

TwisterStream.prototype.fillCache = function (id,cbfunc) {
  
  var Twister = this._scope;
  
  if (this._activeTorrentUser) {
    Twister._wallet[this._activeTorrentUser]._torrents[this._name].fillPostsCache(id,cbfunc);
  } else {
    cbfunc(false);
  }

}

TwisterStream.prototype._queryAndDo = function (cbfunc) {
  
    var thisResource = this;
        
    thisResource.updateCache(function(success){

        if (success) {
            
            thisResource._log("updating cache with torrent successfull")
          
            thisResource._do(cbfunc);
            thisResource._updateInProgress = false;

        } else {
          
            thisResource._log("updating cache with torrent failed")

            thisResource.dhtget([thisResource._name, "status", "s"], function (result) {

                    thisResource._log("result from dhtget: "+JSON.stringify(result));
              
                    if (result[0]) {

                        thisResource._verifyAndCachePost(result[0].p.v, function(newpost) {

                            thisResource._latestId = newpost.getId();
                            thisResource._lastUpdate = Date.now()/1000;
                            thisResource._updateInProgress = false;

                            cbfunc(newpost);

                        });


                    } else { 
			
                      thisResource._handleError({
                        message: "DHT resource is empty.",
                        code: 32052
                      })
                      thisResource._updateInProgress = false;
                      //cbfunc(null);
                      
                    }

                }

            );

        }

    });  
        
}

TwisterStream.prototype._verifyAndCachePost =  function (payload,cbfunc) {
    
    var Twister = this._scope;
        
    var thisResource = this;
    
    var newid = payload.userpost.k;
    var payloadUser = payload.userpost.n;

    //console.log(payloadUser+":post"+newid);
    
    if( !( newid in thisResource._posts) ) {

		var signatureVerification = thisResource.getQuerySetting("signatureVerification");
		
        var TwisterPost = require('./TwisterPost.js');

        var newpost = new TwisterPost(payload.userpost,payload.sig_userpost,Twister);

        thisResource._posts[newpost.getId()] = newpost;
      
        if ( thisResource._latestId<newpost.getId() ) {
        
            thisResource._latestId=newpost.getId();
        
        }
        
        if (cbfunc && signatureVerification=="none") {
            
            thisResource._log("no signature verifcation needed");
          
            newpost._verified = true;
          
            cbfunc(newpost);
          

        } else {
        
			if (cbfunc && signatureVerification=="background") { 
              
              thisResource._log("issuing signature verification in background");
              
              cbfunc(newpost); 
            
            }
            
            var errorfunc = thisResource.getQuerySetting("errorfunc");
			
			Twister.getUser(thisResource._name)._doPubKey(function(pubkey){

				pubkey.verifySignature(payload.userpost,payload.sig_userpost,function(verified){

					if (verified) {

						newpost._verified=true;
                      
                        if (newpost.isRetwist()) {
                          
                          var post_rt = payload.userpost.rt;
                          var sig_rt = payload.userpost.sig_rt;
                          
                          Twister.getUser(post_rt.n)._doPubKey(function(pubkey){

                            pubkey.verifySignature(post_rt,sig_rt,function(verified){

                                if (verified) {
                                  
                                  if (cbfunc && signatureVerification=="instant") {
                                    cbfunc(newpost); 
                                  }
                                  
                                } else {
                                  
                                  newpost.trim();

                                  errorfunc.call(thisResource,{
                                    message: "Signature of retwisted post could not be verified.",
                                    code: 32062
                                  });
                                
                                }
                              
                            });
                            
                          });
                          
                        } else {

						  if (cbfunc && signatureVerification=="instant") { cbfunc(newpost); }
                          
                        }

					} else {
                                  
                        newpost.trim();

                        errorfunc.call(thisResource,{
                          message: "Post signature could not be verified.",
                          code: 32060
                        });

					}

				});

			});
				
		}
 
    } else if(cbfunc) {
      cbfunc(thisResource._posts[newid]);
    }

}

TwisterStream.prototype._doPost = function (id, cbfunc, querySettings) {

  if (querySettings===undefined) {querySettings={};} 
  
  //console.log(querySettings)
  
  var Twister = this._scope;

  var thisResource = this;
  
  if (id && id>0) {

    if (id in this._posts){

      cbfunc(this._posts[id])

      this._log("post already in cache");

    } else {
        
      thisResource._activeQuerySettings = querySettings;
      thisResource._updateInProgress = true;

      this._log("post "+id+" not in cache");

      var thisResource = this;

      thisResource.fillCache(id,function(success){

        if (success) {

          thisResource._log("fill cache was successfull")
          
          thisResource._activeQuerySettings = {};
          thisResource._updateInProgress = false;

          cbfunc(thisResource._posts[id])

        } else {

          thisResource.dhtget([thisResource._name, "post"+id, "s"],

            function (result) {

              if (result[0]) {
            
                thisResource._verifyAndCachePost(result[0].p.v,cbfunc);
                
              } else {
			
                thisResource._handleError({
                  message: "DHT resource is empty.",
                  code: 32052
                })
                thisResource._updateInProgress = false;
                //cbfunc(null);
                
              }
          
              thisResource._activeQuerySettings = {};
              thisResource._updateInProgress = false;

            }

          ); 

        }

      });

    }

  }
    
};

TwisterStream.prototype._doUntil = function (cbfunc, querySettings) {

  this._checkQueryAndDo(function doUntil(post){

    var retVal = cbfunc(post);

    if( post.getLastId() && retVal!==false ) { 

      post.doPreviousPost(doUntil, querySettings); 

    }

  }, querySettings);
	
}

module.exports = TwisterStream;


},{"./TwisterPost.js":152,"./TwisterResource.js":157,"./TwisterStream.js":159,"inherits":52}],160:[function(require,module,exports){
'use strict';

var TwisterProfile = require('./TwisterProfile.js');
var TwisterAvatar = require('./TwisterAvatar.js');
var TwisterFollowings = require('./TwisterFollowings.js');
var TwisterPubKey = require('./TwisterPubKey.js');
var TwisterStream = require('./TwisterStream.js');
var TwisterMentions = require('./TwisterMentions.js');

/**
 * Describes a user in {@ Twister}. Allows for accessing all public onformation about this user.
 * @class
 */
function TwisterUser(name,scope) {
    
    this._name = name;
    this._scope = scope;
    
    this._type = "user";
    this._querySettings = {};
	this._hasParentUser = false;

    this._profile = new TwisterProfile(name,scope);
    this._avatar = new TwisterAvatar(name,scope);
    this._followings = new TwisterFollowings(name,scope);
    this._pubkey = new TwisterPubKey(name,scope);
    this._stream = new TwisterStream(name,scope);
    this._mentions = new TwisterMentions(name,scope);

}

module.exports = TwisterUser;

TwisterUser.prototype.trim = function () {
  
  delete Twister._userCache[this._name];
  
}

TwisterUser.prototype.flatten = function () {

    return {
        
        name: this._name,
        querySettings: this._querySettings,
        
        profile: this._profile.flatten(),
        avatar: this._avatar.flatten(),
        followings: this._followings.flatten(),
        pubkey: this._pubkey.flatten(),
        stream: this._stream.flatten(),
        mentions: this._mentions.flatten()
        
    };


}

TwisterUser.prototype.inflate = function (flatData) {
    
    this._querySettings = flatData.querySettings;
    
    this._profile.inflate(flatData.profile);
    this._avatar.inflate(flatData.avatar);
    this._followings.inflate(flatData.followings);
    this._pubkey.inflate(flatData.pubkey);
    this._stream.inflate(flatData.stream);
    this._mentions.inflate(flatData.mentions);

}

TwisterUser.prototype.trim = function (timestamp) {

  var keepUser = false;
  
  this._profile.trim(timestamp);
  keepUser = keepUser || this._profile.inCache();
  
  this._avatar.trim(timestamp);
  keepUser = keepUser || this._avatar.inCache();
  
  this._followings.trim(timestamp);
  keepUser = keepUser || this._followings.inCache();
  
  this._mentions.trim(timestamp);
  keepUser = keepUser || this._mentions.inCache();
  
  this._stream.trim(timestamp);
  keepUser = keepUser || this._stream.inCache();
  
  this._pubkey.trim(timestamp);
  keepUser = keepUser || this._pubkey.inCache();

  if ( !keepUser ) {
    delete this._scope._userCache[this._name];
  }
  
}

TwisterUser.prototype.getUsername = function () {
    return this._name;
}

TwisterUser.prototype._doPubKey = function (cbfunc, querySettings) {
    this._pubkey._checkQueryAndDo(cbfunc, querySettings);
}

TwisterUser.prototype.doProfile = function (cbfunc, querySettings) {
    this._profile._checkQueryAndDo(cbfunc, querySettings);
};

TwisterUser.prototype.getProfile = function () {
    return this._profile;
};

TwisterUser.prototype.doAvatar = function (cbfunc, querySettings) {
    this._avatar._checkQueryAndDo(cbfunc, querySettings);
};

TwisterUser.prototype.getAvatar = function () {
    return this._avatar;
};

TwisterUser.prototype.doFollowings = function (cbfunc, querySettings) {
    this._followings._checkQueryAndDo(cbfunc, querySettings);
};

TwisterUser.prototype.getFollowings = function () {
    return this._followings;
};

TwisterUser.prototype.doStatus = function (cbfunc, querySettings) {
    this._stream._checkQueryAndDo(cbfunc, querySettings);
};

TwisterUser.prototype.doPost = function (id, cbfunc, querySettings) {
    this._stream._doPost(id, cbfunc, querySettings);
}


TwisterUser.prototype.getPost = function (id) {
    if (id in this._stream._posts) {
		return this._stream._posts[id];
	} else {
		return null;	
	}
}

TwisterUser.prototype.doMentions = function (cbfunc, querySettings) {

    this._mentions._checkQueryAndDo(cbfunc);

}

TwisterUser.prototype.getMentions = function () {
    return this._mentions;
}

TwisterUser.prototype.doLatestPostsUntil = function (cbfunc, querySettings) {

    this._stream._doUntil(cbfunc, querySettings);

}
},{"./TwisterAvatar.js":148,"./TwisterFollowings.js":149,"./TwisterMentions.js":151,"./TwisterProfile.js":153,"./TwisterPubKey.js":155,"./TwisterStream.js":159}],161:[function(require,module,exports){

},{}],162:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');

var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;

  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  }
  else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = stackStartFunction.name;
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && !isFinite(value)) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b)) {
    return a === b;
  }
  var aIsArgs = isArguments(a),
      bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  var ka = objectKeys(a),
      kb = objectKeys(b),
      key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

},{"util/":410}],163:[function(require,module,exports){
arguments[4][161][0].apply(exports,arguments)
},{"dup":161}],164:[function(require,module,exports){
'use strict';


var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
                (typeof Uint16Array !== 'undefined') &&
                (typeof Int32Array !== 'undefined');


exports.assign = function (obj /*from1, from2, from3, ...*/) {
  var sources = Array.prototype.slice.call(arguments, 1);
  while (sources.length) {
    var source = sources.shift();
    if (!source) { continue; }

    if (typeof source !== 'object') {
      throw new TypeError(source + 'must be non-object');
    }

    for (var p in source) {
      if (source.hasOwnProperty(p)) {
        obj[p] = source[p];
      }
    }
  }

  return obj;
};


// reduce buffer size, avoiding mem copy
exports.shrinkBuf = function (buf, size) {
  if (buf.length === size) { return buf; }
  if (buf.subarray) { return buf.subarray(0, size); }
  buf.length = size;
  return buf;
};


var fnTyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    if (src.subarray && dest.subarray) {
      dest.set(src.subarray(src_offs, src_offs+len), dest_offs);
      return;
    }
    // Fallback to ordinary array
    for (var i=0; i<len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function(chunks) {
    var i, l, len, pos, chunk, result;

    // calculate data length
    len = 0;
    for (i=0, l=chunks.length; i<l; i++) {
      len += chunks[i].length;
    }

    // join chunks
    result = new Uint8Array(len);
    pos = 0;
    for (i=0, l=chunks.length; i<l; i++) {
      chunk = chunks[i];
      result.set(chunk, pos);
      pos += chunk.length;
    }

    return result;
  }
};

var fnUntyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    for (var i=0; i<len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function(chunks) {
    return [].concat.apply([], chunks);
  }
};


// Enable/Disable typed arrays use, for testing
//
exports.setTyped = function (on) {
  if (on) {
    exports.Buf8  = Uint8Array;
    exports.Buf16 = Uint16Array;
    exports.Buf32 = Int32Array;
    exports.assign(exports, fnTyped);
  } else {
    exports.Buf8  = Array;
    exports.Buf16 = Array;
    exports.Buf32 = Array;
    exports.assign(exports, fnUntyped);
  }
};

exports.setTyped(TYPED_OK);

},{}],165:[function(require,module,exports){
'use strict';

// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It doesn't worth to make additional optimizationa as in original.
// Small size is preferable.

function adler32(adler, buf, len, pos) {
  var s1 = (adler & 0xffff) |0,
      s2 = ((adler >>> 16) & 0xffff) |0,
      n = 0;

  while (len !== 0) {
    // Set limit ~ twice less than 5552, to keep
    // s2 in 31-bits, because we force signed ints.
    // in other case %= will fail.
    n = len > 2000 ? 2000 : len;
    len -= n;

    do {
      s1 = (s1 + buf[pos++]) |0;
      s2 = (s2 + s1) |0;
    } while (--n);

    s1 %= 65521;
    s2 %= 65521;
  }

  return (s1 | (s2 << 16)) |0;
}


module.exports = adler32;

},{}],166:[function(require,module,exports){
module.exports = {

  /* Allowed flush values; see deflate() and inflate() below for details */
  Z_NO_FLUSH:         0,
  Z_PARTIAL_FLUSH:    1,
  Z_SYNC_FLUSH:       2,
  Z_FULL_FLUSH:       3,
  Z_FINISH:           4,
  Z_BLOCK:            5,
  Z_TREES:            6,

  /* Return codes for the compression/decompression functions. Negative values
  * are errors, positive values are used for special but normal events.
  */
  Z_OK:               0,
  Z_STREAM_END:       1,
  Z_NEED_DICT:        2,
  Z_ERRNO:           -1,
  Z_STREAM_ERROR:    -2,
  Z_DATA_ERROR:      -3,
  //Z_MEM_ERROR:     -4,
  Z_BUF_ERROR:       -5,
  //Z_VERSION_ERROR: -6,

  /* compression levels */
  Z_NO_COMPRESSION:         0,
  Z_BEST_SPEED:             1,
  Z_BEST_COMPRESSION:       9,
  Z_DEFAULT_COMPRESSION:   -1,


  Z_FILTERED:               1,
  Z_HUFFMAN_ONLY:           2,
  Z_RLE:                    3,
  Z_FIXED:                  4,
  Z_DEFAULT_STRATEGY:       0,

  /* Possible values of the data_type field (though see inflate()) */
  Z_BINARY:                 0,
  Z_TEXT:                   1,
  //Z_ASCII:                1, // = Z_TEXT (deprecated)
  Z_UNKNOWN:                2,

  /* The deflate compression method */
  Z_DEFLATED:               8
  //Z_NULL:                 null // Use -1 or null inline, depending on var type
};

},{}],167:[function(require,module,exports){
'use strict';

// Note: we can't get significant speed boost here.
// So write code to minimize size - no pregenerated tables
// and array tools dependencies.


// Use ordinary array, since untyped makes no boost here
function makeTable() {
  var c, table = [];

  for (var n =0; n < 256; n++) {
    c = n;
    for (var k =0; k < 8; k++) {
      c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
    }
    table[n] = c;
  }

  return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
  var t = crcTable,
      end = pos + len;

  crc = crc ^ (-1);

  for (var i = pos; i < end; i++) {
    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
  }

  return (crc ^ (-1)); // >>> 0;
}


module.exports = crc32;

},{}],168:[function(require,module,exports){
'use strict';

var utils   = require('../utils/common');
var trees   = require('./trees');
var adler32 = require('./adler32');
var crc32   = require('./crc32');
var msg   = require('./messages');

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
var Z_NO_FLUSH      = 0;
var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
//var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
//var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
//var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;


/* compression levels */
//var Z_NO_COMPRESSION      = 0;
//var Z_BEST_SPEED          = 1;
//var Z_BEST_COMPRESSION    = 9;
var Z_DEFAULT_COMPRESSION = -1;


var Z_FILTERED            = 1;
var Z_HUFFMAN_ONLY        = 2;
var Z_RLE                 = 3;
var Z_FIXED               = 4;
var Z_DEFAULT_STRATEGY    = 0;

/* Possible values of the data_type field (though see inflate()) */
//var Z_BINARY              = 0;
//var Z_TEXT                = 1;
//var Z_ASCII               = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;


/* The deflate compression method */
var Z_DEFLATED  = 8;

/*============================================================================*/


var MAX_MEM_LEVEL = 9;
/* Maximum value for memLevel in deflateInit2 */
var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_MEM_LEVEL = 8;


var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */
var LITERALS      = 256;
/* number of literal bytes 0..255 */
var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */
var D_CODES       = 30;
/* number of distance codes */
var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */
var HEAP_SIZE     = 2*L_CODES + 1;
/* maximum heap size */
var MAX_BITS  = 15;
/* All codes must not exceed MAX_BITS bits */

var MIN_MATCH = 3;
var MAX_MATCH = 258;
var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);

var PRESET_DICT = 0x20;

var INIT_STATE = 42;
var EXTRA_STATE = 69;
var NAME_STATE = 73;
var COMMENT_STATE = 91;
var HCRC_STATE = 103;
var BUSY_STATE = 113;
var FINISH_STATE = 666;

var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
var BS_BLOCK_DONE     = 2; /* block flush performed */
var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */

var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.

function err(strm, errorCode) {
  strm.msg = msg[errorCode];
  return errorCode;
}

function rank(f) {
  return ((f) << 1) - ((f) > 4 ? 9 : 0);
}

function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }


/* =========================================================================
 * Flush as much pending output as possible. All deflate() output goes
 * through this function so some applications may wish to modify it
 * to avoid allocating a large strm->output buffer and copying into it.
 * (See also read_buf()).
 */
function flush_pending(strm) {
  var s = strm.state;

  //_tr_flush_bits(s);
  var len = s.pending;
  if (len > strm.avail_out) {
    len = strm.avail_out;
  }
  if (len === 0) { return; }

  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
  strm.next_out += len;
  s.pending_out += len;
  strm.total_out += len;
  strm.avail_out -= len;
  s.pending -= len;
  if (s.pending === 0) {
    s.pending_out = 0;
  }
}


function flush_block_only (s, last) {
  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
  s.block_start = s.strstart;
  flush_pending(s.strm);
}


function put_byte(s, b) {
  s.pending_buf[s.pending++] = b;
}


/* =========================================================================
 * Put a short in the pending buffer. The 16-bit value is put in MSB order.
 * IN assertion: the stream state is correct and there is enough room in
 * pending_buf.
 */
function putShortMSB(s, b) {
//  put_byte(s, (Byte)(b >> 8));
//  put_byte(s, (Byte)(b & 0xff));
  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
  s.pending_buf[s.pending++] = b & 0xff;
}


/* ===========================================================================
 * Read a new buffer from the current input stream, update the adler32
 * and total number of bytes read.  All deflate() input goes through
 * this function so some applications may wish to modify it to avoid
 * allocating a large strm->input buffer and copying from it.
 * (See also flush_pending()).
 */
function read_buf(strm, buf, start, size) {
  var len = strm.avail_in;

  if (len > size) { len = size; }
  if (len === 0) { return 0; }

  strm.avail_in -= len;

  utils.arraySet(buf, strm.input, strm.next_in, len, start);
  if (strm.state.wrap === 1) {
    strm.adler = adler32(strm.adler, buf, len, start);
  }

  else if (strm.state.wrap === 2) {
    strm.adler = crc32(strm.adler, buf, len, start);
  }

  strm.next_in += len;
  strm.total_in += len;

  return len;
}


/* ===========================================================================
 * Set match_start to the longest match starting at the given string and
 * return its length. Matches shorter or equal to prev_length are discarded,
 * in which case the result is equal to prev_length and match_start is
 * garbage.
 * IN assertions: cur_match is the head of the hash chain for the current
 *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
 * OUT assertion: the match length is not greater than s->lookahead.
 */
function longest_match(s, cur_match) {
  var chain_length = s.max_chain_length;      /* max hash chain length */
  var scan = s.strstart; /* current string */
  var match;                       /* matched string */
  var len;                           /* length of current match */
  var best_len = s.prev_length;              /* best match length so far */
  var nice_match = s.nice_match;             /* stop if match long enough */
  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;

  var _win = s.window; // shortcut

  var wmask = s.w_mask;
  var prev  = s.prev;

  /* Stop when cur_match becomes <= limit. To simplify the code,
   * we prevent matches with the string of window index 0.
   */

  var strend = s.strstart + MAX_MATCH;
  var scan_end1  = _win[scan + best_len - 1];
  var scan_end   = _win[scan + best_len];

  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
   * It is easy to get rid of this optimization if necessary.
   */
  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

  /* Do not waste too much time if we already have a good match: */
  if (s.prev_length >= s.good_match) {
    chain_length >>= 2;
  }
  /* Do not look for matches beyond the end of the input. This is necessary
   * to make deflate deterministic.
   */
  if (nice_match > s.lookahead) { nice_match = s.lookahead; }

  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");

  do {
    // Assert(cur_match < s->strstart, "no future");
    match = cur_match;

    /* Skip to next match if the match length cannot increase
     * or if the match length is less than 2.  Note that the checks below
     * for insufficient lookahead only occur occasionally for performance
     * reasons.  Therefore uninitialized memory will be accessed, and
     * conditional jumps will be made that depend on those values.
     * However the length of the match is limited to the lookahead, so
     * the output of deflate is not affected by the uninitialized values.
     */

    if (_win[match + best_len]     !== scan_end  ||
        _win[match + best_len - 1] !== scan_end1 ||
        _win[match]                !== _win[scan] ||
        _win[++match]              !== _win[scan + 1]) {
      continue;
    }

    /* The check at best_len-1 can be removed because it will be made
     * again later. (This heuristic is not always a win.)
     * It is not necessary to compare scan[2] and match[2] since they
     * are always equal when the other bytes match, given that
     * the hash keys are equal and that HASH_BITS >= 8.
     */
    scan += 2;
    match++;
    // Assert(*scan == *match, "match[2]?");

    /* We check for insufficient lookahead only every 8th comparison;
     * the 256th check will be made at strstart+258.
     */
    do {
      /*jshint noempty:false*/
    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             scan < strend);

    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");

    len = MAX_MATCH - (strend - scan);
    scan = strend - MAX_MATCH;

    if (len > best_len) {
      s.match_start = cur_match;
      best_len = len;
      if (len >= nice_match) {
        break;
      }
      scan_end1  = _win[scan + best_len - 1];
      scan_end   = _win[scan + best_len];
    }
  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);

  if (best_len <= s.lookahead) {
    return best_len;
  }
  return s.lookahead;
}


/* ===========================================================================
 * Fill the window when the lookahead becomes insufficient.
 * Updates strstart and lookahead.
 *
 * IN assertion: lookahead < MIN_LOOKAHEAD
 * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
 *    At least one byte has been read, or avail_in == 0; reads are
 *    performed for at least two bytes (required for the zip translate_eol
 *    option -- not supported here).
 */
function fill_window(s) {
  var _w_size = s.w_size;
  var p, n, m, more, str;

  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");

  do {
    more = s.window_size - s.lookahead - s.strstart;

    // JS ints have 32 bit, block below not needed
    /* Deal with !@#$% 64K limit: */
    //if (sizeof(int) <= 2) {
    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
    //        more = wsize;
    //
    //  } else if (more == (unsigned)(-1)) {
    //        /* Very unlikely, but possible on 16 bit machine if
    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
    //         */
    //        more--;
    //    }
    //}


    /* If the window is almost full and there is insufficient lookahead,
     * move the upper half to the lower one to make room in the upper half.
     */
    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {

      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
      s.match_start -= _w_size;
      s.strstart -= _w_size;
      /* we now have strstart >= MAX_DIST */
      s.block_start -= _w_size;

      /* Slide the hash table (could be avoided with 32 bit values
       at the expense of memory usage). We slide even when level == 0
       to keep the hash table consistent if we switch back to level > 0
       later. (Using level 0 permanently is not an optimal usage of
       zlib, so we don't care about this pathological case.)
       */

      n = s.hash_size;
      p = n;
      do {
        m = s.head[--p];
        s.head[p] = (m >= _w_size ? m - _w_size : 0);
      } while (--n);

      n = _w_size;
      p = n;
      do {
        m = s.prev[--p];
        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
        /* If n is not on any hash chain, prev[n] is garbage but
         * its value will never be used.
         */
      } while (--n);

      more += _w_size;
    }
    if (s.strm.avail_in === 0) {
      break;
    }

    /* If there was no sliding:
     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
     *    more == window_size - lookahead - strstart
     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
     * => more >= window_size - 2*WSIZE + 2
     * In the BIG_MEM or MMAP case (not yet supported),
     *   window_size == input_size + MIN_LOOKAHEAD  &&
     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
     * Otherwise, window_size == 2*WSIZE so more >= 2.
     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
     */
    //Assert(more >= 2, "more < 2");
    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
    s.lookahead += n;

    /* Initialize the hash value now that we have some input: */
    if (s.lookahead + s.insert >= MIN_MATCH) {
      str = s.strstart - s.insert;
      s.ins_h = s.window[str];

      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
//#if MIN_MATCH != 3
//        Call update_hash() MIN_MATCH-3 more times
//#endif
      while (s.insert) {
        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH-1]) & s.hash_mask;

        s.prev[str & s.w_mask] = s.head[s.ins_h];
        s.head[s.ins_h] = str;
        str++;
        s.insert--;
        if (s.lookahead + s.insert < MIN_MATCH) {
          break;
        }
      }
    }
    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
     * but this is not important since only literal bytes will be emitted.
     */

  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);

  /* If the WIN_INIT bytes after the end of the current data have never been
   * written, then zero those bytes in order to avoid memory check reports of
   * the use of uninitialized (or uninitialised as Julian writes) bytes by
   * the longest match routines.  Update the high water mark for the next
   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
   */
//  if (s.high_water < s.window_size) {
//    var curr = s.strstart + s.lookahead;
//    var init = 0;
//
//    if (s.high_water < curr) {
//      /* Previous high water mark below current data -- zero WIN_INIT
//       * bytes or up to end of window, whichever is less.
//       */
//      init = s.window_size - curr;
//      if (init > WIN_INIT)
//        init = WIN_INIT;
//      zmemzero(s->window + curr, (unsigned)init);
//      s->high_water = curr + init;
//    }
//    else if (s->high_water < (ulg)curr + WIN_INIT) {
//      /* High water mark at or above current data, but below current data
//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
//       * to end of window, whichever is less.
//       */
//      init = (ulg)curr + WIN_INIT - s->high_water;
//      if (init > s->window_size - s->high_water)
//        init = s->window_size - s->high_water;
//      zmemzero(s->window + s->high_water, (unsigned)init);
//      s->high_water += init;
//    }
//  }
//
//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
//    "not enough room for search");
}

/* ===========================================================================
 * Copy without compression as much as possible from the input stream, return
 * the current block state.
 * This function does not insert new strings in the dictionary since
 * uncompressible data is probably not useful. This function is used
 * only for the level=0 compression option.
 * NOTE: this function should be optimized to avoid extra copying from
 * window to pending_buf.
 */
function deflate_stored(s, flush) {
  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
   * to pending_buf_size, and each stored block has a 5 byte header:
   */
  var max_block_size = 0xffff;

  if (max_block_size > s.pending_buf_size - 5) {
    max_block_size = s.pending_buf_size - 5;
  }

  /* Copy as much as possible from input to output: */
  for (;;) {
    /* Fill the window as much as possible: */
    if (s.lookahead <= 1) {

      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
      //  s->block_start >= (long)s->w_size, "slide too late");
//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
//        s.block_start >= s.w_size)) {
//        throw  new Error("slide too late");
//      }

      fill_window(s);
      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }

      if (s.lookahead === 0) {
        break;
      }
      /* flush the current block */
    }
    //Assert(s->block_start >= 0L, "block gone");
//    if (s.block_start < 0) throw new Error("block gone");

    s.strstart += s.lookahead;
    s.lookahead = 0;

    /* Emit a stored block if pending_buf will be full: */
    var max_start = s.block_start + max_block_size;

    if (s.strstart === 0 || s.strstart >= max_start) {
      /* strstart == 0 is possible when wraparound on 16-bit machine */
      s.lookahead = s.strstart - max_start;
      s.strstart = max_start;
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/


    }
    /* Flush if we may have to slide, otherwise block_start may become
     * negative and the data will be gone:
     */
    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }

  s.insert = 0;

  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }

  if (s.strstart > s.block_start) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_NEED_MORE;
}

/* ===========================================================================
 * Compress as much as possible from the input stream, return the current
 * block state.
 * This function does not perform lazy evaluation of matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
function deflate_fast(s, flush) {
  var hash_head;        /* head of the hash chain */
  var bflush;           /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) {
        break; /* flush the current block */
      }
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     * At this point we have always match_length < MIN_MATCH
     */
    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */
    }
    if (s.match_length >= MIN_MATCH) {
      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only

      /*** _tr_tally_dist(s, s.strstart - s.match_start,
                     s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;

      /* Insert new strings in the hash table only if the match length
       * is not too large. This saves time but degrades compression.
       */
      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
        s.match_length--; /* string at strstart already in table */
        do {
          s.strstart++;
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
           * always MIN_MATCH bytes ahead.
           */
        } while (--s.match_length !== 0);
        s.strstart++;
      } else
      {
        s.strstart += s.match_length;
        s.match_length = 0;
        s.ins_h = s.window[s.strstart];
        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;

//#if MIN_MATCH != 3
//                Call UPDATE_HASH() MIN_MATCH-3 more times
//#endif
        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
         * matter since it will be recomputed at next deflate call.
         */
      }
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s.window[s.strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = ((s.strstart < (MIN_MATCH-1)) ? s.strstart : MIN_MATCH-1);
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * Same as above, but achieves better compression. We use a lazy
 * evaluation for matches: a match is finally adopted only if there is
 * no better match at the next window position.
 */
function deflate_slow(s, flush) {
  var hash_head;          /* head of hash chain */
  var bflush;              /* set if current block must be flushed */

  var max_insert;

  /* Process the input block. */
  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     */
    s.prev_length = s.match_length;
    s.prev_match = s.match_start;
    s.match_length = MIN_MATCH-1;

    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
        s.strstart - hash_head <= (s.w_size-MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */

      if (s.match_length <= 5 &&
         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {

        /* If prev_match is also MIN_MATCH, match_start is garbage
         * but we will ignore the current match anyway.
         */
        s.match_length = MIN_MATCH-1;
      }
    }
    /* If there was a match at the previous step and the current
     * match is not better, output the previous match:
     */
    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
      max_insert = s.strstart + s.lookahead - MIN_MATCH;
      /* Do not insert strings in hash table beyond this. */

      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);

      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
                     s.prev_length - MIN_MATCH, bflush);***/
      bflush = trees._tr_tally(s, s.strstart - 1- s.prev_match, s.prev_length - MIN_MATCH);
      /* Insert in hash table all strings up to the end of the match.
       * strstart-1 and strstart are already inserted. If there is not
       * enough lookahead, the last two strings are not inserted in
       * the hash table.
       */
      s.lookahead -= s.prev_length-1;
      s.prev_length -= 2;
      do {
        if (++s.strstart <= max_insert) {
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
        }
      } while (--s.prev_length !== 0);
      s.match_available = 0;
      s.match_length = MIN_MATCH-1;
      s.strstart++;

      if (bflush) {
        /*** FLUSH_BLOCK(s, 0); ***/
        flush_block_only(s, false);
        if (s.strm.avail_out === 0) {
          return BS_NEED_MORE;
        }
        /***/
      }

    } else if (s.match_available) {
      /* If there was no match at the previous position, output a
       * single literal. If there was a match but the current match
       * is longer, truncate the previous match to a single literal.
       */
      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]);

      if (bflush) {
        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
        flush_block_only(s, false);
        /***/
      }
      s.strstart++;
      s.lookahead--;
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
    } else {
      /* There is no previous match to compare with, wait for
       * the next step to decide.
       */
      s.match_available = 1;
      s.strstart++;
      s.lookahead--;
    }
  }
  //Assert (flush != Z_NO_FLUSH, "no flush?");
  if (s.match_available) {
    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart-1]);

    s.match_available = 0;
  }
  s.insert = s.strstart < MIN_MATCH-1 ? s.strstart : MIN_MATCH-1;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_BLOCK_DONE;
}


/* ===========================================================================
 * For Z_RLE, simply look for runs of bytes, generate matches only of distance
 * one.  Do not maintain a hash table.  (It will be regenerated if this run of
 * deflate switches away from Z_RLE.)
 */
function deflate_rle(s, flush) {
  var bflush;            /* set if current block must be flushed */
  var prev;              /* byte at distance one to match */
  var scan, strend;      /* scan goes up to strend for length of run */

  var _win = s.window;

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the longest run, plus one for the unrolled loop.
     */
    if (s.lookahead <= MAX_MATCH) {
      fill_window(s);
      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* See how many times the previous byte repeats */
    s.match_length = 0;
    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
      scan = s.strstart - 1;
      prev = _win[scan];
      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
        strend = s.strstart + MAX_MATCH;
        do {
          /*jshint noempty:false*/
        } while (prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 scan < strend);
        s.match_length = MAX_MATCH - (strend - scan);
        if (s.match_length > s.lookahead) {
          s.match_length = s.lookahead;
        }
      }
      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
    }

    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
    if (s.match_length >= MIN_MATCH) {
      //check_match(s, s.strstart, s.strstart - 1, s.match_length);

      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;
      s.strstart += s.match_length;
      s.match_length = 0;
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s->window[s->strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
 * (It will be regenerated if this run of deflate switches away from Huffman.)
 */
function deflate_huff(s, flush) {
  var bflush;             /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we have a literal to write. */
    if (s.lookahead === 0) {
      fill_window(s);
      if (s.lookahead === 0) {
        if (flush === Z_NO_FLUSH) {
          return BS_NEED_MORE;
        }
        break;      /* flush the current block */
      }
    }

    /* Output a literal byte */
    s.match_length = 0;
    //Tracevv((stderr,"%c", s->window[s->strstart]));
    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
    s.lookahead--;
    s.strstart++;
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* Values for max_lazy_match, good_match and max_chain_length, depending on
 * the desired pack level (0..9). The values given below have been tuned to
 * exclude worst case performance for pathological files. Better values may be
 * found for specific files.
 */
var Config = function (good_length, max_lazy, nice_length, max_chain, func) {
  this.good_length = good_length;
  this.max_lazy = max_lazy;
  this.nice_length = nice_length;
  this.max_chain = max_chain;
  this.func = func;
};

var configuration_table;

configuration_table = [
  /*      good lazy nice chain */
  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */

  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
];


/* ===========================================================================
 * Initialize the "longest match" routines for a new zlib stream
 */
function lm_init(s) {
  s.window_size = 2 * s.w_size;

  /*** CLEAR_HASH(s); ***/
  zero(s.head); // Fill with NIL (= 0);

  /* Set the default configuration parameters:
   */
  s.max_lazy_match = configuration_table[s.level].max_lazy;
  s.good_match = configuration_table[s.level].good_length;
  s.nice_match = configuration_table[s.level].nice_length;
  s.max_chain_length = configuration_table[s.level].max_chain;

  s.strstart = 0;
  s.block_start = 0;
  s.lookahead = 0;
  s.insert = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  s.ins_h = 0;
}


function DeflateState() {
  this.strm = null;            /* pointer back to this zlib stream */
  this.status = 0;            /* as the name implies */
  this.pending_buf = null;      /* output still pending */
  this.pending_buf_size = 0;  /* size of pending_buf */
  this.pending_out = 0;       /* next pending byte to output to the stream */
  this.pending = 0;           /* nb of bytes in the pending buffer */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.gzhead = null;         /* gzip header information to write */
  this.gzindex = 0;           /* where in extra, name, or comment */
  this.method = Z_DEFLATED; /* can only be DEFLATED */
  this.last_flush = -1;   /* value of flush param for previous deflate call */

  this.w_size = 0;  /* LZ77 window size (32K by default) */
  this.w_bits = 0;  /* log2(w_size)  (8..16) */
  this.w_mask = 0;  /* w_size - 1 */

  this.window = null;
  /* Sliding window. Input bytes are read into the second half of the window,
   * and move to the first half later to keep a dictionary of at least wSize
   * bytes. With this organization, matches are limited to a distance of
   * wSize-MAX_MATCH bytes, but this ensures that IO is always
   * performed with a length multiple of the block size.
   */

  this.window_size = 0;
  /* Actual size of window: 2*wSize, except when the user input buffer
   * is directly used as sliding window.
   */

  this.prev = null;
  /* Link to older string with same hash index. To limit the size of this
   * array to 64K, this link is maintained only for the last 32K strings.
   * An index in this array is thus a window index modulo 32K.
   */

  this.head = null;   /* Heads of the hash chains or NIL. */

  this.ins_h = 0;       /* hash index of string to be inserted */
  this.hash_size = 0;   /* number of elements in hash table */
  this.hash_bits = 0;   /* log2(hash_size) */
  this.hash_mask = 0;   /* hash_size-1 */

  this.hash_shift = 0;
  /* Number of bits by which ins_h must be shifted at each input
   * step. It must be such that after MIN_MATCH steps, the oldest
   * byte no longer takes part in the hash key, that is:
   *   hash_shift * MIN_MATCH >= hash_bits
   */

  this.block_start = 0;
  /* Window position at the beginning of the current output block. Gets
   * negative when the window is moved backwards.
   */

  this.match_length = 0;      /* length of best match */
  this.prev_match = 0;        /* previous match */
  this.match_available = 0;   /* set if previous match exists */
  this.strstart = 0;          /* start of string to insert */
  this.match_start = 0;       /* start of matching string */
  this.lookahead = 0;         /* number of valid bytes ahead in window */

  this.prev_length = 0;
  /* Length of the best match at previous step. Matches not greater than this
   * are discarded. This is used in the lazy match evaluation.
   */

  this.max_chain_length = 0;
  /* To speed up deflation, hash chains are never searched beyond this
   * length.  A higher limit improves compression ratio but degrades the
   * speed.
   */

  this.max_lazy_match = 0;
  /* Attempt to find a better match only when the current match is strictly
   * smaller than this value. This mechanism is used only for compression
   * levels >= 4.
   */
  // That's alias to max_lazy_match, don't use directly
  //this.max_insert_length = 0;
  /* Insert new strings in the hash table only if the match length is not
   * greater than this length. This saves time but degrades compression.
   * max_insert_length is used only for compression levels <= 3.
   */

  this.level = 0;     /* compression level (1..9) */
  this.strategy = 0;  /* favor or force Huffman coding*/

  this.good_match = 0;
  /* Use a faster search when the previous match is longer than this */

  this.nice_match = 0; /* Stop searching when current match exceeds this */

              /* used by trees.c: */

  /* Didn't use ct_data typedef below to suppress compiler warning */

  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */

  // Use flat array of DOUBLE size, with interleaved fata,
  // because JS does not support effective
  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
  this.dyn_dtree  = new utils.Buf16((2*D_CODES+1) * 2);
  this.bl_tree    = new utils.Buf16((2*BL_CODES+1) * 2);
  zero(this.dyn_ltree);
  zero(this.dyn_dtree);
  zero(this.bl_tree);

  this.l_desc   = null;         /* desc. for literal tree */
  this.d_desc   = null;         /* desc. for distance tree */
  this.bl_desc  = null;         /* desc. for bit length tree */

  //ush bl_count[MAX_BITS+1];
  this.bl_count = new utils.Buf16(MAX_BITS+1);
  /* number of codes at each bit length for an optimal tree */

  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
  this.heap = new utils.Buf16(2*L_CODES+1);  /* heap used to build the Huffman trees */
  zero(this.heap);

  this.heap_len = 0;               /* number of elements in the heap */
  this.heap_max = 0;               /* element of largest frequency */
  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
   * The same heap array is used to build all trees.
   */

  this.depth = new utils.Buf16(2*L_CODES+1); //uch depth[2*L_CODES+1];
  zero(this.depth);
  /* Depth of each subtree used as tie breaker for trees of equal frequency
   */

  this.l_buf = 0;          /* buffer index for literals or lengths */

  this.lit_bufsize = 0;
  /* Size of match buffer for literals/lengths.  There are 4 reasons for
   * limiting lit_bufsize to 64K:
   *   - frequencies can be kept in 16 bit counters
   *   - if compression is not successful for the first block, all input
   *     data is still in the window so we can still emit a stored block even
   *     when input comes from standard input.  (This can also be done for
   *     all blocks if lit_bufsize is not greater than 32K.)
   *   - if compression is not successful for a file smaller than 64K, we can
   *     even emit a stored file instead of a stored block (saving 5 bytes).
   *     This is applicable only for zip (not gzip or zlib).
   *   - creating new Huffman trees less frequently may not provide fast
   *     adaptation to changes in the input data statistics. (Take for
   *     example a binary file with poorly compressible code followed by
   *     a highly compressible string table.) Smaller buffer sizes give
   *     fast adaptation but have of course the overhead of transmitting
   *     trees more frequently.
   *   - I can't count above 4
   */

  this.last_lit = 0;      /* running index in l_buf */

  this.d_buf = 0;
  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
   * the same number of elements. To use different lengths, an extra flag
   * array would be necessary.
   */

  this.opt_len = 0;       /* bit length of current block with optimal trees */
  this.static_len = 0;    /* bit length of current block with static trees */
  this.matches = 0;       /* number of string matches in current block */
  this.insert = 0;        /* bytes at end of window left to insert */


  this.bi_buf = 0;
  /* Output buffer. bits are inserted starting at the bottom (least
   * significant bits).
   */
  this.bi_valid = 0;
  /* Number of valid bits in bi_buf.  All bits above the last valid bit
   * are always zero.
   */

  // Used for window memory init. We safely ignore it for JS. That makes
  // sense only for pointers and memory check tools.
  //this.high_water = 0;
  /* High water mark offset in window for initialized bytes -- bytes above
   * this are set to zero in order to avoid memory check warnings when
   * longest match routines access bytes past the input.  This is then
   * updated to the new high water mark.
   */
}


function deflateResetKeep(strm) {
  var s;

  if (!strm || !strm.state) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.total_in = strm.total_out = 0;
  strm.data_type = Z_UNKNOWN;

  s = strm.state;
  s.pending = 0;
  s.pending_out = 0;

  if (s.wrap < 0) {
    s.wrap = -s.wrap;
    /* was made negative by deflate(..., Z_FINISH); */
  }
  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
  strm.adler = (s.wrap === 2) ?
    0  // crc32(0, Z_NULL, 0)
  :
    1; // adler32(0, Z_NULL, 0)
  s.last_flush = Z_NO_FLUSH;
  trees._tr_init(s);
  return Z_OK;
}


function deflateReset(strm) {
  var ret = deflateResetKeep(strm);
  if (ret === Z_OK) {
    lm_init(strm.state);
  }
  return ret;
}


function deflateSetHeader(strm, head) {
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
  strm.state.gzhead = head;
  return Z_OK;
}


function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
  if (!strm) { // === Z_NULL
    return Z_STREAM_ERROR;
  }
  var wrap = 1;

  if (level === Z_DEFAULT_COMPRESSION) {
    level = 6;
  }

  if (windowBits < 0) { /* suppress zlib wrapper */
    wrap = 0;
    windowBits = -windowBits;
  }

  else if (windowBits > 15) {
    wrap = 2;           /* write gzip wrapper instead */
    windowBits -= 16;
  }


  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
    strategy < 0 || strategy > Z_FIXED) {
    return err(strm, Z_STREAM_ERROR);
  }


  if (windowBits === 8) {
    windowBits = 9;
  }
  /* until 256-byte window bug fixed */

  var s = new DeflateState();

  strm.state = s;
  s.strm = strm;

  s.wrap = wrap;
  s.gzhead = null;
  s.w_bits = windowBits;
  s.w_size = 1 << s.w_bits;
  s.w_mask = s.w_size - 1;

  s.hash_bits = memLevel + 7;
  s.hash_size = 1 << s.hash_bits;
  s.hash_mask = s.hash_size - 1;
  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);

  s.window = new utils.Buf8(s.w_size * 2);
  s.head = new utils.Buf16(s.hash_size);
  s.prev = new utils.Buf16(s.w_size);

  // Don't need mem init magic for JS.
  //s.high_water = 0;  /* nothing written to s->window yet */

  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */

  s.pending_buf_size = s.lit_bufsize * 4;
  s.pending_buf = new utils.Buf8(s.pending_buf_size);

  s.d_buf = s.lit_bufsize >> 1;
  s.l_buf = (1 + 2) * s.lit_bufsize;

  s.level = level;
  s.strategy = strategy;
  s.method = method;

  return deflateReset(strm);
}

function deflateInit(strm, level) {
  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
}


function deflate(strm, flush) {
  var old_flush, s;
  var beg, val; // for gzip header write only

  if (!strm || !strm.state ||
    flush > Z_BLOCK || flush < 0) {
    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
  }

  s = strm.state;

  if (!strm.output ||
      (!strm.input && strm.avail_in !== 0) ||
      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
  }

  s.strm = strm; /* just in case */
  old_flush = s.last_flush;
  s.last_flush = flush;

  /* Write the header */
  if (s.status === INIT_STATE) {

    if (s.wrap === 2) { // GZIP header
      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
      put_byte(s, 31);
      put_byte(s, 139);
      put_byte(s, 8);
      if (!s.gzhead) { // s->gzhead == Z_NULL
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, OS_CODE);
        s.status = BUSY_STATE;
      }
      else {
        put_byte(s, (s.gzhead.text ? 1 : 0) +
                    (s.gzhead.hcrc ? 2 : 0) +
                    (!s.gzhead.extra ? 0 : 4) +
                    (!s.gzhead.name ? 0 : 8) +
                    (!s.gzhead.comment ? 0 : 16)
                );
        put_byte(s, s.gzhead.time & 0xff);
        put_byte(s, (s.gzhead.time >> 8) & 0xff);
        put_byte(s, (s.gzhead.time >> 16) & 0xff);
        put_byte(s, (s.gzhead.time >> 24) & 0xff);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, s.gzhead.os & 0xff);
        if (s.gzhead.extra && s.gzhead.extra.length) {
          put_byte(s, s.gzhead.extra.length & 0xff);
          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
        }
        if (s.gzhead.hcrc) {
          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
        }
        s.gzindex = 0;
        s.status = EXTRA_STATE;
      }
    }
    else // DEFLATE header
    {
      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
      var level_flags = -1;

      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
        level_flags = 0;
      } else if (s.level < 6) {
        level_flags = 1;
      } else if (s.level === 6) {
        level_flags = 2;
      } else {
        level_flags = 3;
      }
      header |= (level_flags << 6);
      if (s.strstart !== 0) { header |= PRESET_DICT; }
      header += 31 - (header % 31);

      s.status = BUSY_STATE;
      putShortMSB(s, header);

      /* Save the adler32 of the preset dictionary: */
      if (s.strstart !== 0) {
        putShortMSB(s, strm.adler >>> 16);
        putShortMSB(s, strm.adler & 0xffff);
      }
      strm.adler = 1; // adler32(0L, Z_NULL, 0);
    }
  }

//#ifdef GZIP
  if (s.status === EXTRA_STATE) {
    if (s.gzhead.extra/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */

      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            break;
          }
        }
        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
        s.gzindex++;
      }
      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (s.gzindex === s.gzhead.extra.length) {
        s.gzindex = 0;
        s.status = NAME_STATE;
      }
    }
    else {
      s.status = NAME_STATE;
    }
  }
  if (s.status === NAME_STATE) {
    if (s.gzhead.name/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.name.length) {
          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.gzindex = 0;
        s.status = COMMENT_STATE;
      }
    }
    else {
      s.status = COMMENT_STATE;
    }
  }
  if (s.status === COMMENT_STATE) {
    if (s.gzhead.comment/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.comment.length) {
          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.status = HCRC_STATE;
      }
    }
    else {
      s.status = HCRC_STATE;
    }
  }
  if (s.status === HCRC_STATE) {
    if (s.gzhead.hcrc) {
      if (s.pending + 2 > s.pending_buf_size) {
        flush_pending(strm);
      }
      if (s.pending + 2 <= s.pending_buf_size) {
        put_byte(s, strm.adler & 0xff);
        put_byte(s, (strm.adler >> 8) & 0xff);
        strm.adler = 0; //crc32(0L, Z_NULL, 0);
        s.status = BUSY_STATE;
      }
    }
    else {
      s.status = BUSY_STATE;
    }
  }
//#endif

  /* Flush as much pending output as possible */
  if (s.pending !== 0) {
    flush_pending(strm);
    if (strm.avail_out === 0) {
      /* Since avail_out is 0, deflate will be called again with
       * more output space, but possibly with both pending and
       * avail_in equal to zero. There won't be anything to do,
       * but this is not an error situation so make sure we
       * return OK instead of BUF_ERROR at next call of deflate:
       */
      s.last_flush = -1;
      return Z_OK;
    }

    /* Make sure there is something to do and avoid duplicate consecutive
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
    flush !== Z_FINISH) {
    return err(strm, Z_BUF_ERROR);
  }

  /* User must not provide more input after the first FINISH: */
  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
    return err(strm, Z_BUF_ERROR);
  }

  /* Start a new block or continue the current one.
   */
  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
        configuration_table[s.level].func(s, flush));

    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
      s.status = FINISH_STATE;
    }
    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
      if (strm.avail_out === 0) {
        s.last_flush = -1;
        /* avoid BUF_ERROR next call, see above */
      }
      return Z_OK;
      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
       * of deflate should use the same flush parameter to make sure
       * that the flush is complete. So we don't have to output an
       * empty block here, this will be done at next call. This also
       * ensures that for a very small output buffer, we emit at most
       * one empty block.
       */
    }
    if (bstate === BS_BLOCK_DONE) {
      if (flush === Z_PARTIAL_FLUSH) {
        trees._tr_align(s);
      }
      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */

        trees._tr_stored_block(s, 0, 0, false);
        /* For a full flush, this empty block will be recognized
         * as a special marker by inflate_sync().
         */
        if (flush === Z_FULL_FLUSH) {
          /*** CLEAR_HASH(s); ***/             /* forget history */
          zero(s.head); // Fill with NIL (= 0);

          if (s.lookahead === 0) {
            s.strstart = 0;
            s.block_start = 0;
            s.insert = 0;
          }
        }
      }
      flush_pending(strm);
      if (strm.avail_out === 0) {
        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
        return Z_OK;
      }
    }
  }
  //Assert(strm->avail_out > 0, "bug2");
  //if (strm.avail_out <= 0) { throw new Error("bug2");}

  if (flush !== Z_FINISH) { return Z_OK; }
  if (s.wrap <= 0) { return Z_STREAM_END; }

  /* Write the trailer */
  if (s.wrap === 2) {
    put_byte(s, strm.adler & 0xff);
    put_byte(s, (strm.adler >> 8) & 0xff);
    put_byte(s, (strm.adler >> 16) & 0xff);
    put_byte(s, (strm.adler >> 24) & 0xff);
    put_byte(s, strm.total_in & 0xff);
    put_byte(s, (strm.total_in >> 8) & 0xff);
    put_byte(s, (strm.total_in >> 16) & 0xff);
    put_byte(s, (strm.total_in >> 24) & 0xff);
  }
  else
  {
    putShortMSB(s, strm.adler >>> 16);
    putShortMSB(s, strm.adler & 0xffff);
  }

  flush_pending(strm);
  /* If avail_out is zero, the application will call deflate again
   * to flush the rest.
   */
  if (s.wrap > 0) { s.wrap = -s.wrap; }
  /* write the trailer only once! */
  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
}

function deflateEnd(strm) {
  var status;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  status = strm.state.status;
  if (status !== INIT_STATE &&
    status !== EXTRA_STATE &&
    status !== NAME_STATE &&
    status !== COMMENT_STATE &&
    status !== HCRC_STATE &&
    status !== BUSY_STATE &&
    status !== FINISH_STATE
  ) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.state = null;

  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
}

/* =========================================================================
 * Copy the source state to the destination state
 */
//function deflateCopy(dest, source) {
//
//}

exports.deflateInit = deflateInit;
exports.deflateInit2 = deflateInit2;
exports.deflateReset = deflateReset;
exports.deflateResetKeep = deflateResetKeep;
exports.deflateSetHeader = deflateSetHeader;
exports.deflate = deflate;
exports.deflateEnd = deflateEnd;
exports.deflateInfo = 'pako deflate (from Nodeca project)';

/* Not implemented
exports.deflateBound = deflateBound;
exports.deflateCopy = deflateCopy;
exports.deflateSetDictionary = deflateSetDictionary;
exports.deflateParams = deflateParams;
exports.deflatePending = deflatePending;
exports.deflatePrime = deflatePrime;
exports.deflateTune = deflateTune;
*/

},{"../utils/common":164,"./adler32":165,"./crc32":167,"./messages":172,"./trees":173}],169:[function(require,module,exports){
'use strict';

// See state defs from inflate.js
var BAD = 30;       /* got a data error -- remain here until reset */
var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */

/*
   Decode literal, length, and distance codes and write out the resulting
   literal and match bytes until either not enough input or output is
   available, an end-of-block is encountered, or a data error is encountered.
   When large enough input and output buffers are supplied to inflate(), for
   example, a 16K input buffer and a 64K output buffer, more than 95% of the
   inflate execution time is spent in this routine.

   Entry assumptions:

        state.mode === LEN
        strm.avail_in >= 6
        strm.avail_out >= 258
        start >= strm.avail_out
        state.bits < 8

   On return, state.mode is one of:

        LEN -- ran out of enough output space or enough available input
        TYPE -- reached end of block code, inflate() to interpret next block
        BAD -- error in block data

   Notes:

    - The maximum input bits used by a length/distance pair is 15 bits for the
      length code, 5 bits for the length extra, 15 bits for the distance code,
      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
      Therefore if strm.avail_in >= 6, then there is enough input to avoid
      checking for available input while decoding.

    - The maximum bytes that a single length/distance pair can output is 258
      bytes, which is the maximum length that can be coded.  inflate_fast()
      requires strm.avail_out >= 258 for each loop to avoid checking for
      output space.
 */
module.exports = function inflate_fast(strm, start) {
  var state;
  var _in;                    /* local strm.input */
  var last;                   /* have enough input while in < last */
  var _out;                   /* local strm.output */
  var beg;                    /* inflate()'s initial strm.output */
  var end;                    /* while out < end, enough space available */
//#ifdef INFLATE_STRICT
  var dmax;                   /* maximum distance from zlib header */
//#endif
  var wsize;                  /* window size or zero if not using window */
  var whave;                  /* valid bytes in the window */
  var wnext;                  /* window write index */
  // Use `s_window` instead `window`, avoid conflict with instrumentation tools
  var s_window;               /* allocated sliding window, if wsize != 0 */
  var hold;                   /* local strm.hold */
  var bits;                   /* local strm.bits */
  var lcode;                  /* local strm.lencode */
  var dcode;                  /* local strm.distcode */
  var lmask;                  /* mask for first level of length codes */
  var dmask;                  /* mask for first level of distance codes */
  var here;                   /* retrieved table entry */
  var op;                     /* code bits, operation, extra bits, or */
                              /*  window position, window bytes to copy */
  var len;                    /* match length, unused bytes */
  var dist;                   /* match distance */
  var from;                   /* where to copy match from */
  var from_source;


  var input, output; // JS specific, because we have no pointers

  /* copy state to local variables */
  state = strm.state;
  //here = state.here;
  _in = strm.next_in;
  input = strm.input;
  last = _in + (strm.avail_in - 5);
  _out = strm.next_out;
  output = strm.output;
  beg = _out - (start - strm.avail_out);
  end = _out + (strm.avail_out - 257);
//#ifdef INFLATE_STRICT
  dmax = state.dmax;
//#endif
  wsize = state.wsize;
  whave = state.whave;
  wnext = state.wnext;
  s_window = state.window;
  hold = state.hold;
  bits = state.bits;
  lcode = state.lencode;
  dcode = state.distcode;
  lmask = (1 << state.lenbits) - 1;
  dmask = (1 << state.distbits) - 1;


  /* decode literals and length/distances until end-of-block or not enough
     input data or output space */

  top:
  do {
    if (bits < 15) {
      hold += input[_in++] << bits;
      bits += 8;
      hold += input[_in++] << bits;
      bits += 8;
    }

    here = lcode[hold & lmask];

    dolen:
    for (;;) { // Goto emulation
      op = here >>> 24/*here.bits*/;
      hold >>>= op;
      bits -= op;
      op = (here >>> 16) & 0xff/*here.op*/;
      if (op === 0) {                          /* literal */
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        output[_out++] = here & 0xffff/*here.val*/;
      }
      else if (op & 16) {                     /* length base */
        len = here & 0xffff/*here.val*/;
        op &= 15;                           /* number of extra bits */
        if (op) {
          if (bits < op) {
            hold += input[_in++] << bits;
            bits += 8;
          }
          len += hold & ((1 << op) - 1);
          hold >>>= op;
          bits -= op;
        }
        //Tracevv((stderr, "inflate:         length %u\n", len));
        if (bits < 15) {
          hold += input[_in++] << bits;
          bits += 8;
          hold += input[_in++] << bits;
          bits += 8;
        }
        here = dcode[hold & dmask];

        dodist:
        for (;;) { // goto emulation
          op = here >>> 24/*here.bits*/;
          hold >>>= op;
          bits -= op;
          op = (here >>> 16) & 0xff/*here.op*/;

          if (op & 16) {                      /* distance base */
            dist = here & 0xffff/*here.val*/;
            op &= 15;                       /* number of extra bits */
            if (bits < op) {
              hold += input[_in++] << bits;
              bits += 8;
              if (bits < op) {
                hold += input[_in++] << bits;
                bits += 8;
              }
            }
            dist += hold & ((1 << op) - 1);
//#ifdef INFLATE_STRICT
            if (dist > dmax) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break top;
            }
//#endif
            hold >>>= op;
            bits -= op;
            //Tracevv((stderr, "inflate:         distance %u\n", dist));
            op = _out - beg;                /* max distance in output */
            if (dist > op) {                /* see if copy from window */
              op = dist - op;               /* distance back in window */
              if (op > whave) {
                if (state.sane) {
                  strm.msg = 'invalid distance too far back';
                  state.mode = BAD;
                  break top;
                }

// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//                if (len <= op - whave) {
//                  do {
//                    output[_out++] = 0;
//                  } while (--len);
//                  continue top;
//                }
//                len -= op - whave;
//                do {
//                  output[_out++] = 0;
//                } while (--op > whave);
//                if (op === 0) {
//                  from = _out - dist;
//                  do {
//                    output[_out++] = output[from++];
//                  } while (--len);
//                  continue top;
//                }
//#endif
              }
              from = 0; // window index
              from_source = s_window;
              if (wnext === 0) {           /* very common case */
                from += wsize - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              else if (wnext < op) {      /* wrap around window */
                from += wsize + wnext - op;
                op -= wnext;
                if (op < len) {         /* some from end of window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = 0;
                  if (wnext < len) {  /* some from start of window */
                    op = wnext;
                    len -= op;
                    do {
                      output[_out++] = s_window[from++];
                    } while (--op);
                    from = _out - dist;      /* rest from output */
                    from_source = output;
                  }
                }
              }
              else {                      /* contiguous in window */
                from += wnext - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              while (len > 2) {
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                len -= 3;
              }
              if (len) {
                output[_out++] = from_source[from++];
                if (len > 1) {
                  output[_out++] = from_source[from++];
                }
              }
            }
            else {
              from = _out - dist;          /* copy direct from output */
              do {                        /* minimum length is three */
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                len -= 3;
              } while (len > 2);
              if (len) {
                output[_out++] = output[from++];
                if (len > 1) {
                  output[_out++] = output[from++];
                }
              }
            }
          }
          else if ((op & 64) === 0) {          /* 2nd level distance code */
            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
            continue dodist;
          }
          else {
            strm.msg = 'invalid distance code';
            state.mode = BAD;
            break top;
          }

          break; // need to emulate goto via "continue"
        }
      }
      else if ((op & 64) === 0) {              /* 2nd level length code */
        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
        continue dolen;
      }
      else if (op & 32) {                     /* end-of-block */
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.mode = TYPE;
        break top;
      }
      else {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break top;
      }

      break; // need to emulate goto via "continue"
    }
  } while (_in < last && _out < end);

  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
  len = bits >> 3;
  _in -= len;
  bits -= len << 3;
  hold &= (1 << bits) - 1;

  /* update state and return */
  strm.next_in = _in;
  strm.next_out = _out;
  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
  state.hold = hold;
  state.bits = bits;
  return;
};

},{}],170:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');
var adler32 = require('./adler32');
var crc32   = require('./crc32');
var inflate_fast = require('./inffast');
var inflate_table = require('./inftrees');

var CODES = 0;
var LENS = 1;
var DISTS = 2;

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
//var Z_NO_FLUSH      = 0;
//var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
//var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;

/* The deflate compression method */
var Z_DEFLATED  = 8;


/* STATES ====================================================================*/
/* ===========================================================================*/


var    HEAD = 1;       /* i: waiting for magic header */
var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
var    TIME = 3;       /* i: waiting for modification time (gzip) */
var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
var    NAME = 7;       /* i: waiting for end of file name (gzip) */
var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
var    HCRC = 9;       /* i: waiting for header crc (gzip) */
var    DICTID = 10;    /* i: waiting for dictionary check value */
var    DICT = 11;      /* waiting for inflateSetDictionary() call */
var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
var        STORED = 14;    /* i: waiting for stored size (length and complement) */
var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
var        LENLENS = 18;   /* i: waiting for code length code lengths */
var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
var            LEN = 21;       /* i: waiting for length/lit/eob code */
var            LENEXT = 22;    /* i: waiting for length extra bits */
var            DIST = 23;      /* i: waiting for distance code */
var            DISTEXT = 24;   /* i: waiting for distance extra bits */
var            MATCH = 25;     /* o: waiting for output space to copy string */
var            LIT = 26;       /* o: waiting for output space to write literal */
var    CHECK = 27;     /* i: waiting for 32-bit check value */
var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
var    DONE = 29;      /* finished check, done -- remain here until reset */
var    BAD = 30;       /* got a data error -- remain here until reset */
var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */

/* ===========================================================================*/



var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);

var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_WBITS = MAX_WBITS;


function ZSWAP32(q) {
  return  (((q >>> 24) & 0xff) +
          ((q >>> 8) & 0xff00) +
          ((q & 0xff00) << 8) +
          ((q & 0xff) << 24));
}


function InflateState() {
  this.mode = 0;             /* current inflate mode */
  this.last = false;          /* true if processing last block */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.havedict = false;      /* true if dictionary provided */
  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
  this.check = 0;             /* protected copy of check value */
  this.total = 0;             /* protected copy of output count */
  // TODO: may be {}
  this.head = null;           /* where to save gzip header information */

  /* sliding window */
  this.wbits = 0;             /* log base 2 of requested window size */
  this.wsize = 0;             /* window size or zero if not using window */
  this.whave = 0;             /* valid bytes in the window */
  this.wnext = 0;             /* window write index */
  this.window = null;         /* allocated sliding window, if needed */

  /* bit accumulator */
  this.hold = 0;              /* input bit accumulator */
  this.bits = 0;              /* number of bits in "in" */

  /* for string and stored block copying */
  this.length = 0;            /* literal or length of data to copy */
  this.offset = 0;            /* distance back to copy string from */

  /* for table and code decoding */
  this.extra = 0;             /* extra bits needed */

  /* fixed and dynamic code tables */
  this.lencode = null;          /* starting table for length/literal codes */
  this.distcode = null;         /* starting table for distance codes */
  this.lenbits = 0;           /* index bits for lencode */
  this.distbits = 0;          /* index bits for distcode */

  /* dynamic table building */
  this.ncode = 0;             /* number of code length code lengths */
  this.nlen = 0;              /* number of length code lengths */
  this.ndist = 0;             /* number of distance code lengths */
  this.have = 0;              /* number of code lengths in lens[] */
  this.next = null;              /* next available space in codes[] */

  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
  this.work = new utils.Buf16(288); /* work area for code table building */

  /*
   because we don't have pointers in js, we use lencode and distcode directly
   as buffers so we don't need codes
  */
  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
  this.sane = 0;                   /* if false, allow invalid distance too far */
  this.back = 0;                   /* bits back of last unprocessed length/lit */
  this.was = 0;                    /* initial length of match */
}

function inflateResetKeep(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  strm.total_in = strm.total_out = state.total = 0;
  strm.msg = ''; /*Z_NULL*/
  if (state.wrap) {       /* to support ill-conceived Java test suite */
    strm.adler = state.wrap & 1;
  }
  state.mode = HEAD;
  state.last = 0;
  state.havedict = 0;
  state.dmax = 32768;
  state.head = null/*Z_NULL*/;
  state.hold = 0;
  state.bits = 0;
  //state.lencode = state.distcode = state.next = state.codes;
  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);

  state.sane = 1;
  state.back = -1;
  //Tracev((stderr, "inflate: reset\n"));
  return Z_OK;
}

function inflateReset(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  state.wsize = 0;
  state.whave = 0;
  state.wnext = 0;
  return inflateResetKeep(strm);

}

function inflateReset2(strm, windowBits) {
  var wrap;
  var state;

  /* get the state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;

  /* extract wrap request from windowBits parameter */
  if (windowBits < 0) {
    wrap = 0;
    windowBits = -windowBits;
  }
  else {
    wrap = (windowBits >> 4) + 1;
    if (windowBits < 48) {
      windowBits &= 15;
    }
  }

  /* set number of window bits, free window if different */
  if (windowBits && (windowBits < 8 || windowBits > 15)) {
    return Z_STREAM_ERROR;
  }
  if (state.window !== null && state.wbits !== windowBits) {
    state.window = null;
  }

  /* update state and reset the rest of it */
  state.wrap = wrap;
  state.wbits = windowBits;
  return inflateReset(strm);
}

function inflateInit2(strm, windowBits) {
  var ret;
  var state;

  if (!strm) { return Z_STREAM_ERROR; }
  //strm.msg = Z_NULL;                 /* in case we return an error */

  state = new InflateState();

  //if (state === Z_NULL) return Z_MEM_ERROR;
  //Tracev((stderr, "inflate: allocated\n"));
  strm.state = state;
  state.window = null/*Z_NULL*/;
  ret = inflateReset2(strm, windowBits);
  if (ret !== Z_OK) {
    strm.state = null/*Z_NULL*/;
  }
  return ret;
}

function inflateInit(strm) {
  return inflateInit2(strm, DEF_WBITS);
}


/*
 Return state with length and distance decoding tables and index sizes set to
 fixed code decoding.  Normally this returns fixed tables from inffixed.h.
 If BUILDFIXED is defined, then instead this routine builds the tables the
 first time it's called, and returns those tables the first time and
 thereafter.  This reduces the size of the code by about 2K bytes, in
 exchange for a little execution time.  However, BUILDFIXED should not be
 used for threaded applications, since the rewriting of the tables and virgin
 may not be thread-safe.
 */
var virgin = true;

var lenfix, distfix; // We have no pointers in JS, so keep tables separate

function fixedtables(state) {
  /* build fixed huffman tables if first call (may not be thread safe) */
  if (virgin) {
    var sym;

    lenfix = new utils.Buf32(512);
    distfix = new utils.Buf32(32);

    /* literal/length table */
    sym = 0;
    while (sym < 144) { state.lens[sym++] = 8; }
    while (sym < 256) { state.lens[sym++] = 9; }
    while (sym < 280) { state.lens[sym++] = 7; }
    while (sym < 288) { state.lens[sym++] = 8; }

    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, {bits: 9});

    /* distance table */
    sym = 0;
    while (sym < 32) { state.lens[sym++] = 5; }

    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, {bits: 5});

    /* do this just once */
    virgin = false;
  }

  state.lencode = lenfix;
  state.lenbits = 9;
  state.distcode = distfix;
  state.distbits = 5;
}


/*
 Update the window with the last wsize (normally 32K) bytes written before
 returning.  If window does not exist yet, create it.  This is only called
 when a window is already in use, or when output has been written during this
 inflate call, but the end of the deflate stream has not been reached yet.
 It is also called to create a window for dictionary data when a dictionary
 is loaded.

 Providing output buffers larger than 32K to inflate() should provide a speed
 advantage, since only the last 32K of output is copied to the sliding window
 upon return from inflate(), and since all distances after the first 32K of
 output will fall in the output data, making match copies simpler and faster.
 The advantage may be dependent on the size of the processor's data caches.
 */
function updatewindow(strm, src, end, copy) {
  var dist;
  var state = strm.state;

  /* if it hasn't been done already, allocate space for the window */
  if (state.window === null) {
    state.wsize = 1 << state.wbits;
    state.wnext = 0;
    state.whave = 0;

    state.window = new utils.Buf8(state.wsize);
  }

  /* copy state->wsize or less output bytes into the circular window */
  if (copy >= state.wsize) {
    utils.arraySet(state.window,src, end - state.wsize, state.wsize, 0);
    state.wnext = 0;
    state.whave = state.wsize;
  }
  else {
    dist = state.wsize - state.wnext;
    if (dist > copy) {
      dist = copy;
    }
    //zmemcpy(state->window + state->wnext, end - copy, dist);
    utils.arraySet(state.window,src, end - copy, dist, state.wnext);
    copy -= dist;
    if (copy) {
      //zmemcpy(state->window, end - copy, copy);
      utils.arraySet(state.window,src, end - copy, copy, 0);
      state.wnext = copy;
      state.whave = state.wsize;
    }
    else {
      state.wnext += dist;
      if (state.wnext === state.wsize) { state.wnext = 0; }
      if (state.whave < state.wsize) { state.whave += dist; }
    }
  }
  return 0;
}

function inflate(strm, flush) {
  var state;
  var input, output;          // input/output buffers
  var next;                   /* next input INDEX */
  var put;                    /* next output INDEX */
  var have, left;             /* available input and output */
  var hold;                   /* bit buffer */
  var bits;                   /* bits in bit buffer */
  var _in, _out;              /* save starting available input and output */
  var copy;                   /* number of stored or match bytes to copy */
  var from;                   /* where to copy match bytes from */
  var from_source;
  var here = 0;               /* current decoding table entry */
  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
  //var last;                   /* parent table entry */
  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
  var len;                    /* length to copy for repeats, bits to drop */
  var ret;                    /* return code */
  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
  var opts;

  var n; // temporary var for NEED_BITS

  var order = /* permutation of code lengths */
    [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15];


  if (!strm || !strm.state || !strm.output ||
      (!strm.input && strm.avail_in !== 0)) {
    return Z_STREAM_ERROR;
  }

  state = strm.state;
  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */


  //--- LOAD() ---
  put = strm.next_out;
  output = strm.output;
  left = strm.avail_out;
  next = strm.next_in;
  input = strm.input;
  have = strm.avail_in;
  hold = state.hold;
  bits = state.bits;
  //---

  _in = have;
  _out = left;
  ret = Z_OK;

  inf_leave: // goto emulation
  for (;;) {
    switch (state.mode) {
    case HEAD:
      if (state.wrap === 0) {
        state.mode = TYPEDO;
        break;
      }
      //=== NEEDBITS(16);
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
        state.check = 0/*crc32(0L, Z_NULL, 0)*/;
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//

        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = FLAGS;
        break;
      }
      state.flags = 0;           /* expect zlib header */
      if (state.head) {
        state.head.done = false;
      }
      if (!(state.wrap & 1) ||   /* check if zlib header allowed */
        (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
        strm.msg = 'incorrect header check';
        state.mode = BAD;
        break;
      }
      if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
        strm.msg = 'unknown compression method';
        state.mode = BAD;
        break;
      }
      //--- DROPBITS(4) ---//
      hold >>>= 4;
      bits -= 4;
      //---//
      len = (hold & 0x0f)/*BITS(4)*/ + 8;
      if (state.wbits === 0) {
        state.wbits = len;
      }
      else if (len > state.wbits) {
        strm.msg = 'invalid window size';
        state.mode = BAD;
        break;
      }
      state.dmax = 1 << len;
      //Tracev((stderr, "inflate:   zlib header ok\n"));
      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
      state.mode = hold & 0x200 ? DICTID : TYPE;
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      break;
    case FLAGS:
      //=== NEEDBITS(16); */
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.flags = hold;
      if ((state.flags & 0xff) !== Z_DEFLATED) {
        strm.msg = 'unknown compression method';
        state.mode = BAD;
        break;
      }
      if (state.flags & 0xe000) {
        strm.msg = 'unknown header flags set';
        state.mode = BAD;
        break;
      }
      if (state.head) {
        state.head.text = ((hold >> 8) & 1);
      }
      if (state.flags & 0x0200) {
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = TIME;
      /* falls through */
    case TIME:
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if (state.head) {
        state.head.time = hold;
      }
      if (state.flags & 0x0200) {
        //=== CRC4(state.check, hold)
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        hbuf[2] = (hold >>> 16) & 0xff;
        hbuf[3] = (hold >>> 24) & 0xff;
        state.check = crc32(state.check, hbuf, 4, 0);
        //===
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = OS;
      /* falls through */
    case OS:
      //=== NEEDBITS(16); */
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if (state.head) {
        state.head.xflags = (hold & 0xff);
        state.head.os = (hold >> 8);
      }
      if (state.flags & 0x0200) {
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = EXLEN;
      /* falls through */
    case EXLEN:
      if (state.flags & 0x0400) {
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.length = hold;
        if (state.head) {
          state.head.extra_len = hold;
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
      }
      else if (state.head) {
        state.head.extra = null/*Z_NULL*/;
      }
      state.mode = EXTRA;
      /* falls through */
    case EXTRA:
      if (state.flags & 0x0400) {
        copy = state.length;
        if (copy > have) { copy = have; }
        if (copy) {
          if (state.head) {
            len = state.head.extra_len - state.length;
            if (!state.head.extra) {
              // Use untyped array for more conveniend processing later
              state.head.extra = new Array(state.head.extra_len);
            }
            utils.arraySet(
              state.head.extra,
              input,
              next,
              // extra field is limited to 65536 bytes
              // - no need for additional size check
              copy,
              /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
              len
            );
            //zmemcpy(state.head.extra + len, next,
            //        len + copy > state.head.extra_max ?
            //        state.head.extra_max - len : copy);
          }
          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          state.length -= copy;
        }
        if (state.length) { break inf_leave; }
      }
      state.length = 0;
      state.mode = NAME;
      /* falls through */
    case NAME:
      if (state.flags & 0x0800) {
        if (have === 0) { break inf_leave; }
        copy = 0;
        do {
          // TODO: 2 or 1 bytes?
          len = input[next + copy++];
          /* use constant limit because in js we should not preallocate memory */
          if (state.head && len &&
              (state.length < 65536 /*state.head.name_max*/)) {
            state.head.name += String.fromCharCode(len);
          }
        } while (len && copy < have);

        if (state.flags & 0x0200) {
          state.check = crc32(state.check, input, copy, next);
        }
        have -= copy;
        next += copy;
        if (len) { break inf_leave; }
      }
      else if (state.head) {
        state.head.name = null;
      }
      state.length = 0;
      state.mode = COMMENT;
      /* falls through */
    case COMMENT:
      if (state.flags & 0x1000) {
        if (have === 0) { break inf_leave; }
        copy = 0;
        do {
          len = input[next + copy++];
          /* use constant limit because in js we should not preallocate memory */
          if (state.head && len &&
              (state.length < 65536 /*state.head.comm_max*/)) {
            state.head.comment += String.fromCharCode(len);
          }
        } while (len && copy < have);
        if (state.flags & 0x0200) {
          state.check = crc32(state.check, input, copy, next);
        }
        have -= copy;
        next += copy;
        if (len) { break inf_leave; }
      }
      else if (state.head) {
        state.head.comment = null;
      }
      state.mode = HCRC;
      /* falls through */
    case HCRC:
      if (state.flags & 0x0200) {
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (hold !== (state.check & 0xffff)) {
          strm.msg = 'header crc mismatch';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
      }
      if (state.head) {
        state.head.hcrc = ((state.flags >> 9) & 1);
        state.head.done = true;
      }
      strm.adler = state.check = 0 /*crc32(0L, Z_NULL, 0)*/;
      state.mode = TYPE;
      break;
    case DICTID:
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      strm.adler = state.check = ZSWAP32(hold);
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = DICT;
      /* falls through */
    case DICT:
      if (state.havedict === 0) {
        //--- RESTORE() ---
        strm.next_out = put;
        strm.avail_out = left;
        strm.next_in = next;
        strm.avail_in = have;
        state.hold = hold;
        state.bits = bits;
        //---
        return Z_NEED_DICT;
      }
      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
      state.mode = TYPE;
      /* falls through */
    case TYPE:
      if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case TYPEDO:
      if (state.last) {
        //--- BYTEBITS() ---//
        hold >>>= bits & 7;
        bits -= bits & 7;
        //---//
        state.mode = CHECK;
        break;
      }
      //=== NEEDBITS(3); */
      while (bits < 3) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.last = (hold & 0x01)/*BITS(1)*/;
      //--- DROPBITS(1) ---//
      hold >>>= 1;
      bits -= 1;
      //---//

      switch ((hold & 0x03)/*BITS(2)*/) {
      case 0:                             /* stored block */
        //Tracev((stderr, "inflate:     stored block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = STORED;
        break;
      case 1:                             /* fixed block */
        fixedtables(state);
        //Tracev((stderr, "inflate:     fixed codes block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = LEN_;             /* decode codes */
        if (flush === Z_TREES) {
          //--- DROPBITS(2) ---//
          hold >>>= 2;
          bits -= 2;
          //---//
          break inf_leave;
        }
        break;
      case 2:                             /* dynamic block */
        //Tracev((stderr, "inflate:     dynamic codes block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = TABLE;
        break;
      case 3:
        strm.msg = 'invalid block type';
        state.mode = BAD;
      }
      //--- DROPBITS(2) ---//
      hold >>>= 2;
      bits -= 2;
      //---//
      break;
    case STORED:
      //--- BYTEBITS() ---// /* go to byte boundary */
      hold >>>= bits & 7;
      bits -= bits & 7;
      //---//
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
        strm.msg = 'invalid stored block lengths';
        state.mode = BAD;
        break;
      }
      state.length = hold & 0xffff;
      //Tracev((stderr, "inflate:       stored length %u\n",
      //        state.length));
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = COPY_;
      if (flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case COPY_:
      state.mode = COPY;
      /* falls through */
    case COPY:
      copy = state.length;
      if (copy) {
        if (copy > have) { copy = have; }
        if (copy > left) { copy = left; }
        if (copy === 0) { break inf_leave; }
        //--- zmemcpy(put, next, copy); ---
        utils.arraySet(output, input, next, copy, put);
        //---//
        have -= copy;
        next += copy;
        left -= copy;
        put += copy;
        state.length -= copy;
        break;
      }
      //Tracev((stderr, "inflate:       stored end\n"));
      state.mode = TYPE;
      break;
    case TABLE:
      //=== NEEDBITS(14); */
      while (bits < 14) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
      //--- DROPBITS(5) ---//
      hold >>>= 5;
      bits -= 5;
      //---//
      state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
      //--- DROPBITS(5) ---//
      hold >>>= 5;
      bits -= 5;
      //---//
      state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
      //--- DROPBITS(4) ---//
      hold >>>= 4;
      bits -= 4;
      //---//
//#ifndef PKZIP_BUG_WORKAROUND
      if (state.nlen > 286 || state.ndist > 30) {
        strm.msg = 'too many length or distance symbols';
        state.mode = BAD;
        break;
      }
//#endif
      //Tracev((stderr, "inflate:       table sizes ok\n"));
      state.have = 0;
      state.mode = LENLENS;
      /* falls through */
    case LENLENS:
      while (state.have < state.ncode) {
        //=== NEEDBITS(3);
        while (bits < 3) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
        //--- DROPBITS(3) ---//
        hold >>>= 3;
        bits -= 3;
        //---//
      }
      while (state.have < 19) {
        state.lens[order[state.have++]] = 0;
      }
      // We have separate tables & no pointers. 2 commented lines below not needed.
      //state.next = state.codes;
      //state.lencode = state.next;
      // Switch to use dynamic table
      state.lencode = state.lendyn;
      state.lenbits = 7;

      opts = {bits: state.lenbits};
      ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
      state.lenbits = opts.bits;

      if (ret) {
        strm.msg = 'invalid code lengths set';
        state.mode = BAD;
        break;
      }
      //Tracev((stderr, "inflate:       code lengths ok\n"));
      state.have = 0;
      state.mode = CODELENS;
      /* falls through */
    case CODELENS:
      while (state.have < state.nlen + state.ndist) {
        for (;;) {
          here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if (here_val < 16) {
          //--- DROPBITS(here.bits) ---//
          hold >>>= here_bits;
          bits -= here_bits;
          //---//
          state.lens[state.have++] = here_val;
        }
        else {
          if (here_val === 16) {
            //=== NEEDBITS(here.bits + 2);
            n = here_bits + 2;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            if (state.have === 0) {
              strm.msg = 'invalid bit length repeat';
              state.mode = BAD;
              break;
            }
            len = state.lens[state.have - 1];
            copy = 3 + (hold & 0x03);//BITS(2);
            //--- DROPBITS(2) ---//
            hold >>>= 2;
            bits -= 2;
            //---//
          }
          else if (here_val === 17) {
            //=== NEEDBITS(here.bits + 3);
            n = here_bits + 3;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            len = 0;
            copy = 3 + (hold & 0x07);//BITS(3);
            //--- DROPBITS(3) ---//
            hold >>>= 3;
            bits -= 3;
            //---//
          }
          else {
            //=== NEEDBITS(here.bits + 7);
            n = here_bits + 7;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            len = 0;
            copy = 11 + (hold & 0x7f);//BITS(7);
            //--- DROPBITS(7) ---//
            hold >>>= 7;
            bits -= 7;
            //---//
          }
          if (state.have + copy > state.nlen + state.ndist) {
            strm.msg = 'invalid bit length repeat';
            state.mode = BAD;
            break;
          }
          while (copy--) {
            state.lens[state.have++] = len;
          }
        }
      }

      /* handle error breaks in while */
      if (state.mode === BAD) { break; }

      /* check for end-of-block code (better have one) */
      if (state.lens[256] === 0) {
        strm.msg = 'invalid code -- missing end-of-block';
        state.mode = BAD;
        break;
      }

      /* build code tables -- note: do not change the lenbits or distbits
         values here (9 and 6) without reading the comments in inftrees.h
         concerning the ENOUGH constants, which depend on those values */
      state.lenbits = 9;

      opts = {bits: state.lenbits};
      ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
      // We have separate tables & no pointers. 2 commented lines below not needed.
      // state.next_index = opts.table_index;
      state.lenbits = opts.bits;
      // state.lencode = state.next;

      if (ret) {
        strm.msg = 'invalid literal/lengths set';
        state.mode = BAD;
        break;
      }

      state.distbits = 6;
      //state.distcode.copy(state.codes);
      // Switch to use dynamic table
      state.distcode = state.distdyn;
      opts = {bits: state.distbits};
      ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
      // We have separate tables & no pointers. 2 commented lines below not needed.
      // state.next_index = opts.table_index;
      state.distbits = opts.bits;
      // state.distcode = state.next;

      if (ret) {
        strm.msg = 'invalid distances set';
        state.mode = BAD;
        break;
      }
      //Tracev((stderr, 'inflate:       codes ok\n'));
      state.mode = LEN_;
      if (flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case LEN_:
      state.mode = LEN;
      /* falls through */
    case LEN:
      if (have >= 6 && left >= 258) {
        //--- RESTORE() ---
        strm.next_out = put;
        strm.avail_out = left;
        strm.next_in = next;
        strm.avail_in = have;
        state.hold = hold;
        state.bits = bits;
        //---
        inflate_fast(strm, _out);
        //--- LOAD() ---
        put = strm.next_out;
        output = strm.output;
        left = strm.avail_out;
        next = strm.next_in;
        input = strm.input;
        have = strm.avail_in;
        hold = state.hold;
        bits = state.bits;
        //---

        if (state.mode === TYPE) {
          state.back = -1;
        }
        break;
      }
      state.back = 0;
      for (;;) {
        here = state.lencode[hold & ((1 << state.lenbits) -1)];  /*BITS(state.lenbits)*/
        here_bits = here >>> 24;
        here_op = (here >>> 16) & 0xff;
        here_val = here & 0xffff;

        if (here_bits <= bits) { break; }
        //--- PULLBYTE() ---//
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
        //---//
      }
      if (here_op && (here_op & 0xf0) === 0) {
        last_bits = here_bits;
        last_op = here_op;
        last_val = here_val;
        for (;;) {
          here = state.lencode[last_val +
                  ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)];
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((last_bits + here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        //--- DROPBITS(last.bits) ---//
        hold >>>= last_bits;
        bits -= last_bits;
        //---//
        state.back += last_bits;
      }
      //--- DROPBITS(here.bits) ---//
      hold >>>= here_bits;
      bits -= here_bits;
      //---//
      state.back += here_bits;
      state.length = here_val;
      if (here_op === 0) {
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        state.mode = LIT;
        break;
      }
      if (here_op & 32) {
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.back = -1;
        state.mode = TYPE;
        break;
      }
      if (here_op & 64) {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break;
      }
      state.extra = here_op & 15;
      state.mode = LENEXT;
      /* falls through */
    case LENEXT:
      if (state.extra) {
        //=== NEEDBITS(state.extra);
        n = state.extra;
        while (bits < n) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.length += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/;
        //--- DROPBITS(state.extra) ---//
        hold >>>= state.extra;
        bits -= state.extra;
        //---//
        state.back += state.extra;
      }
      //Tracevv((stderr, "inflate:         length %u\n", state.length));
      state.was = state.length;
      state.mode = DIST;
      /* falls through */
    case DIST:
      for (;;) {
        here = state.distcode[hold & ((1 << state.distbits) -1)];/*BITS(state.distbits)*/
        here_bits = here >>> 24;
        here_op = (here >>> 16) & 0xff;
        here_val = here & 0xffff;

        if ((here_bits) <= bits) { break; }
        //--- PULLBYTE() ---//
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
        //---//
      }
      if ((here_op & 0xf0) === 0) {
        last_bits = here_bits;
        last_op = here_op;
        last_val = here_val;
        for (;;) {
          here = state.distcode[last_val +
                  ((hold & ((1 << (last_bits + last_op)) -1))/*BITS(last.bits + last.op)*/ >> last_bits)];
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((last_bits + here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        //--- DROPBITS(last.bits) ---//
        hold >>>= last_bits;
        bits -= last_bits;
        //---//
        state.back += last_bits;
      }
      //--- DROPBITS(here.bits) ---//
      hold >>>= here_bits;
      bits -= here_bits;
      //---//
      state.back += here_bits;
      if (here_op & 64) {
        strm.msg = 'invalid distance code';
        state.mode = BAD;
        break;
      }
      state.offset = here_val;
      state.extra = (here_op) & 15;
      state.mode = DISTEXT;
      /* falls through */
    case DISTEXT:
      if (state.extra) {
        //=== NEEDBITS(state.extra);
        n = state.extra;
        while (bits < n) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.offset += hold & ((1 << state.extra) -1)/*BITS(state.extra)*/;
        //--- DROPBITS(state.extra) ---//
        hold >>>= state.extra;
        bits -= state.extra;
        //---//
        state.back += state.extra;
      }
//#ifdef INFLATE_STRICT
      if (state.offset > state.dmax) {
        strm.msg = 'invalid distance too far back';
        state.mode = BAD;
        break;
      }
//#endif
      //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
      state.mode = MATCH;
      /* falls through */
    case MATCH:
      if (left === 0) { break inf_leave; }
      copy = _out - left;
      if (state.offset > copy) {         /* copy from window */
        copy = state.offset - copy;
        if (copy > state.whave) {
          if (state.sane) {
            strm.msg = 'invalid distance too far back';
            state.mode = BAD;
            break;
          }
// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//          Trace((stderr, "inflate.c too far\n"));
//          copy -= state.whave;
//          if (copy > state.length) { copy = state.length; }
//          if (copy > left) { copy = left; }
//          left -= copy;
//          state.length -= copy;
//          do {
//            output[put++] = 0;
//          } while (--copy);
//          if (state.length === 0) { state.mode = LEN; }
//          break;
//#endif
        }
        if (copy > state.wnext) {
          copy -= state.wnext;
          from = state.wsize - copy;
        }
        else {
          from = state.wnext - copy;
        }
        if (copy > state.length) { copy = state.length; }
        from_source = state.window;
      }
      else {                              /* copy from output */
        from_source = output;
        from = put - state.offset;
        copy = state.length;
      }
      if (copy > left) { copy = left; }
      left -= copy;
      state.length -= copy;
      do {
        output[put++] = from_source[from++];
      } while (--copy);
      if (state.length === 0) { state.mode = LEN; }
      break;
    case LIT:
      if (left === 0) { break inf_leave; }
      output[put++] = state.length;
      left--;
      state.mode = LEN;
      break;
    case CHECK:
      if (state.wrap) {
        //=== NEEDBITS(32);
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          // Use '|' insdead of '+' to make sure that result is signed
          hold |= input[next++] << bits;
          bits += 8;
        }
        //===//
        _out -= left;
        strm.total_out += _out;
        state.total += _out;
        if (_out) {
          strm.adler = state.check =
              /*UPDATE(state.check, put - _out, _out);*/
              (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));

        }
        _out = left;
        // NB: crc32 stored as signed 32-bit int, ZSWAP32 returns signed too
        if ((state.flags ? hold : ZSWAP32(hold)) !== state.check) {
          strm.msg = 'incorrect data check';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        //Tracev((stderr, "inflate:   check matches trailer\n"));
      }
      state.mode = LENGTH;
      /* falls through */
    case LENGTH:
      if (state.wrap && state.flags) {
        //=== NEEDBITS(32);
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (hold !== (state.total & 0xffffffff)) {
          strm.msg = 'incorrect length check';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        //Tracev((stderr, "inflate:   length matches trailer\n"));
      }
      state.mode = DONE;
      /* falls through */
    case DONE:
      ret = Z_STREAM_END;
      break inf_leave;
    case BAD:
      ret = Z_DATA_ERROR;
      break inf_leave;
    case MEM:
      return Z_MEM_ERROR;
    case SYNC:
      /* falls through */
    default:
      return Z_STREAM_ERROR;
    }
  }

  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"

  /*
     Return from inflate(), updating the total counts and the check value.
     If there was no progress during the inflate() call, return a buffer
     error.  Call updatewindow() to create and/or update the window state.
     Note: a memory error from inflate() is non-recoverable.
   */

  //--- RESTORE() ---
  strm.next_out = put;
  strm.avail_out = left;
  strm.next_in = next;
  strm.avail_in = have;
  state.hold = hold;
  state.bits = bits;
  //---

  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
                      (state.mode < CHECK || flush !== Z_FINISH))) {
    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
      state.mode = MEM;
      return Z_MEM_ERROR;
    }
  }
  _in -= strm.avail_in;
  _out -= strm.avail_out;
  strm.total_in += _in;
  strm.total_out += _out;
  state.total += _out;
  if (state.wrap && _out) {
    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
  }
  strm.data_type = state.bits + (state.last ? 64 : 0) +
                    (state.mode === TYPE ? 128 : 0) +
                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
    ret = Z_BUF_ERROR;
  }
  return ret;
}

function inflateEnd(strm) {

  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
    return Z_STREAM_ERROR;
  }

  var state = strm.state;
  if (state.window) {
    state.window = null;
  }
  strm.state = null;
  return Z_OK;
}

function inflateGetHeader(strm, head) {
  var state;

  /* check state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }

  /* save header structure */
  state.head = head;
  head.done = false;
  return Z_OK;
}


exports.inflateReset = inflateReset;
exports.inflateReset2 = inflateReset2;
exports.inflateResetKeep = inflateResetKeep;
exports.inflateInit = inflateInit;
exports.inflateInit2 = inflateInit2;
exports.inflate = inflate;
exports.inflateEnd = inflateEnd;
exports.inflateGetHeader = inflateGetHeader;
exports.inflateInfo = 'pako inflate (from Nodeca project)';

/* Not implemented
exports.inflateCopy = inflateCopy;
exports.inflateGetDictionary = inflateGetDictionary;
exports.inflateMark = inflateMark;
exports.inflatePrime = inflatePrime;
exports.inflateSetDictionary = inflateSetDictionary;
exports.inflateSync = inflateSync;
exports.inflateSyncPoint = inflateSyncPoint;
exports.inflateUndermine = inflateUndermine;
*/

},{"../utils/common":164,"./adler32":165,"./crc32":167,"./inffast":169,"./inftrees":171}],171:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');

var MAXBITS = 15;
var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);

var CODES = 0;
var LENS = 1;
var DISTS = 2;

var lbase = [ /* Length codes 257..285 base */
  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
];

var lext = [ /* Length codes 257..285 extra */
  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
];

var dbase = [ /* Distance codes 0..29 base */
  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
  8193, 12289, 16385, 24577, 0, 0
];

var dext = [ /* Distance codes 0..29 extra */
  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
  28, 28, 29, 29, 64, 64
];

module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
{
  var bits = opts.bits;
      //here = opts.here; /* table entry for duplication */

  var len = 0;               /* a code's length in bits */
  var sym = 0;               /* index of code symbols */
  var min = 0, max = 0;          /* minimum and maximum code lengths */
  var root = 0;              /* number of index bits for root table */
  var curr = 0;              /* number of index bits for current table */
  var drop = 0;              /* code bits to drop for sub-table */
  var left = 0;                   /* number of prefix codes available */
  var used = 0;              /* code entries in table used */
  var huff = 0;              /* Huffman code */
  var incr;              /* for incrementing code, index */
  var fill;              /* index for replicating entries */
  var low;               /* low bits for current root entry */
  var mask;              /* mask for low root bits */
  var next;             /* next available space in table */
  var base = null;     /* base value table to use */
  var base_index = 0;
//  var shoextra;    /* extra bits table to use */
  var end;                    /* use base and extra for symbol > end */
  var count = new utils.Buf16(MAXBITS+1); //[MAXBITS+1];    /* number of codes of each length */
  var offs = new utils.Buf16(MAXBITS+1); //[MAXBITS+1];     /* offsets in table for each length */
  var extra = null;
  var extra_index = 0;

  var here_bits, here_op, here_val;

  /*
   Process a set of code lengths to create a canonical Huffman code.  The
   code lengths are lens[0..codes-1].  Each length corresponds to the
   symbols 0..codes-1.  The Huffman code is generated by first sorting the
   symbols by length from short to long, and retaining the symbol order
   for codes with equal lengths.  Then the code starts with all zero bits
   for the first code of the shortest length, and the codes are integer
   increments for the same length, and zeros are appended as the length
   increases.  For the deflate format, these bits are stored backwards
   from their more natural integer increment ordering, and so when the
   decoding tables are built in the large loop below, the integer codes
   are incremented backwards.

   This routine assumes, but does not check, that all of the entries in
   lens[] are in the range 0..MAXBITS.  The caller must assure this.
   1..MAXBITS is interpreted as that code length.  zero means that that
   symbol does not occur in this code.

   The codes are sorted by computing a count of codes for each length,
   creating from that a table of starting indices for each length in the
   sorted table, and then entering the symbols in order in the sorted
   table.  The sorted table is work[], with that space being provided by
   the caller.

   The length counts are used for other purposes as well, i.e. finding
   the minimum and maximum length codes, determining if there are any
   codes at all, checking for a valid set of lengths, and looking ahead
   at length counts to determine sub-table sizes when building the
   decoding tables.
   */

  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
  for (len = 0; len <= MAXBITS; len++) {
    count[len] = 0;
  }
  for (sym = 0; sym < codes; sym++) {
    count[lens[lens_index + sym]]++;
  }

  /* bound code lengths, force root to be within code lengths */
  root = bits;
  for (max = MAXBITS; max >= 1; max--) {
    if (count[max] !== 0) { break; }
  }
  if (root > max) {
    root = max;
  }
  if (max === 0) {                     /* no symbols to code at all */
    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;


    //table.op[opts.table_index] = 64;
    //table.bits[opts.table_index] = 1;
    //table.val[opts.table_index++] = 0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;

    opts.bits = 1;
    return 0;     /* no symbols, but wait for decoding to report error */
  }
  for (min = 1; min < max; min++) {
    if (count[min] !== 0) { break; }
  }
  if (root < min) {
    root = min;
  }

  /* check for an over-subscribed or incomplete set of lengths */
  left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= count[len];
    if (left < 0) {
      return -1;
    }        /* over-subscribed */
  }
  if (left > 0 && (type === CODES || max !== 1)) {
    return -1;                      /* incomplete set */
  }

  /* generate offsets into symbol table for each length for sorting */
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++) {
    offs[len + 1] = offs[len] + count[len];
  }

  /* sort symbols by length, by symbol order within each length */
  for (sym = 0; sym < codes; sym++) {
    if (lens[lens_index + sym] !== 0) {
      work[offs[lens[lens_index + sym]]++] = sym;
    }
  }

  /*
   Create and fill in decoding tables.  In this loop, the table being
   filled is at next and has curr index bits.  The code being used is huff
   with length len.  That code is converted to an index by dropping drop
   bits off of the bottom.  For codes where len is less than drop + curr,
   those top drop + curr - len bits are incremented through all values to
   fill the table with replicated entries.

   root is the number of index bits for the root table.  When len exceeds
   root, sub-tables are created pointed to by the root entry with an index
   of the low root bits of huff.  This is saved in low to check for when a
   new sub-table should be started.  drop is zero when the root table is
   being filled, and drop is root when sub-tables are being filled.

   When a new sub-table is needed, it is necessary to look ahead in the
   code lengths to determine what size sub-table is needed.  The length
   counts are used for this, and so count[] is decremented as codes are
   entered in the tables.

   used keeps track of how many table entries have been allocated from the
   provided *table space.  It is checked for LENS and DIST tables against
   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
   the initial root table size constants.  See the comments in inftrees.h
   for more information.

   sym increments through all symbols, and the loop terminates when
   all codes of length max, i.e. all codes, have been processed.  This
   routine permits incomplete codes, so another loop after this one fills
   in the rest of the decoding tables with invalid code markers.
   */

  /* set up for code type */
  // poor man optimization - use if-else instead of switch,
  // to avoid deopts in old v8
  if (type === CODES) {
    base = extra = work;    /* dummy value--not used */
    end = 19;

  } else if (type === LENS) {
    base = lbase;
    base_index -= 257;
    extra = lext;
    extra_index -= 257;
    end = 256;

  } else {                    /* DISTS */
    base = dbase;
    extra = dext;
    end = -1;
  }

  /* initialize opts for loop */
  huff = 0;                   /* starting code */
  sym = 0;                    /* starting code symbol */
  len = min;                  /* starting code length */
  next = table_index;              /* current table to fill in */
  curr = root;                /* current table index bits */
  drop = 0;                   /* current bits to drop from code for index */
  low = -1;                   /* trigger new sub-table when len > root */
  used = 1 << root;          /* use root table entries */
  mask = used - 1;            /* mask for comparing low */

  /* check available table space */
  if ((type === LENS && used > ENOUGH_LENS) ||
    (type === DISTS && used > ENOUGH_DISTS)) {
    return 1;
  }

  var i=0;
  /* process all codes and make table entries */
  for (;;) {
    i++;
    /* create table entry */
    here_bits = len - drop;
    if (work[sym] < end) {
      here_op = 0;
      here_val = work[sym];
    }
    else if (work[sym] > end) {
      here_op = extra[extra_index + work[sym]];
      here_val = base[base_index + work[sym]];
    }
    else {
      here_op = 32 + 64;         /* end of block */
      here_val = 0;
    }

    /* replicate for those indices with low len bits equal to huff */
    incr = 1 << (len - drop);
    fill = 1 << curr;
    min = fill;                 /* save offset to next table */
    do {
      fill -= incr;
      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
    } while (fill !== 0);

    /* backwards increment the len-bit code huff */
    incr = 1 << (len - 1);
    while (huff & incr) {
      incr >>= 1;
    }
    if (incr !== 0) {
      huff &= incr - 1;
      huff += incr;
    } else {
      huff = 0;
    }

    /* go to next symbol, update count, len */
    sym++;
    if (--count[len] === 0) {
      if (len === max) { break; }
      len = lens[lens_index + work[sym]];
    }

    /* create new sub-table if needed */
    if (len > root && (huff & mask) !== low) {
      /* if first time, transition to sub-tables */
      if (drop === 0) {
        drop = root;
      }

      /* increment past last table */
      next += min;            /* here min is 1 << curr */

      /* determine length of next table */
      curr = len - drop;
      left = 1 << curr;
      while (curr + drop < max) {
        left -= count[curr + drop];
        if (left <= 0) { break; }
        curr++;
        left <<= 1;
      }

      /* check for enough space */
      used += 1 << curr;
      if ((type === LENS && used > ENOUGH_LENS) ||
        (type === DISTS && used > ENOUGH_DISTS)) {
        return 1;
      }

      /* point entry in root table to sub-table */
      low = huff & mask;
      /*table.op[low] = curr;
      table.bits[low] = root;
      table.val[low] = next - opts.table_index;*/
      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
    }
  }

  /* fill in remaining table entry if code is incomplete (guaranteed to have
   at most one remaining entry, since if the code is incomplete, the
   maximum code length that was allowed to get this far is one bit) */
  if (huff !== 0) {
    //table.op[next + huff] = 64;            /* invalid code marker */
    //table.bits[next + huff] = len - drop;
    //table.val[next + huff] = 0;
    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
  }

  /* set return parameters */
  //opts.table_index += used;
  opts.bits = root;
  return 0;
};

},{"../utils/common":164}],172:[function(require,module,exports){
'use strict';

module.exports = {
  '2':    'need dictionary',     /* Z_NEED_DICT       2  */
  '1':    'stream end',          /* Z_STREAM_END      1  */
  '0':    '',                    /* Z_OK              0  */
  '-1':   'file error',          /* Z_ERRNO         (-1) */
  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
};

},{}],173:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');

/* Public constants ==========================================================*/
/* ===========================================================================*/


//var Z_FILTERED          = 1;
//var Z_HUFFMAN_ONLY      = 2;
//var Z_RLE               = 3;
var Z_FIXED               = 4;
//var Z_DEFAULT_STRATEGY  = 0;

/* Possible values of the data_type field (though see inflate()) */
var Z_BINARY              = 0;
var Z_TEXT                = 1;
//var Z_ASCII             = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;

/*============================================================================*/


function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }

// From zutil.h

var STORED_BLOCK = 0;
var STATIC_TREES = 1;
var DYN_TREES    = 2;
/* The three kinds of block type */

var MIN_MATCH    = 3;
var MAX_MATCH    = 258;
/* The minimum and maximum match lengths */

// From deflate.h
/* ===========================================================================
 * Internal compression state.
 */

var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */

var LITERALS      = 256;
/* number of literal bytes 0..255 */

var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */

var D_CODES       = 30;
/* number of distance codes */

var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */

var HEAP_SIZE     = 2*L_CODES + 1;
/* maximum heap size */

var MAX_BITS      = 15;
/* All codes must not exceed MAX_BITS bits */

var Buf_size      = 16;
/* size of bit buffer in bi_buf */


/* ===========================================================================
 * Constants
 */

var MAX_BL_BITS = 7;
/* Bit length codes must not exceed MAX_BL_BITS bits */

var END_BLOCK   = 256;
/* end of block literal code */

var REP_3_6     = 16;
/* repeat previous bit length 3-6 times (2 bits of repeat count) */

var REPZ_3_10   = 17;
/* repeat a zero length 3-10 times  (3 bits of repeat count) */

var REPZ_11_138 = 18;
/* repeat a zero length 11-138 times  (7 bits of repeat count) */

var extra_lbits =   /* extra bits for each length code */
  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];

var extra_dbits =   /* extra bits for each distance code */
  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];

var extra_blbits =  /* extra bits for each bit length code */
  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];

var bl_order =
  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
/* The lengths of the bit length codes are sent in order of decreasing
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

/* ===========================================================================
 * Local data. These are initialized only once.
 */

// We pre-fill arrays with 0 to avoid uninitialized gaps

var DIST_CODE_LEN = 512; /* see definition of array dist_code below */

// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1
var static_ltree  = new Array((L_CODES+2) * 2);
zero(static_ltree);
/* The static literal tree. Since the bit lengths are imposed, there is no
 * need for the L_CODES extra codes used during heap construction. However
 * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
 * below).
 */

var static_dtree  = new Array(D_CODES * 2);
zero(static_dtree);
/* The static distance tree. (Actually a trivial tree since all codes use
 * 5 bits.)
 */

var _dist_code    = new Array(DIST_CODE_LEN);
zero(_dist_code);
/* Distance codes. The first 256 values correspond to the distances
 * 3 .. 258, the last 256 values correspond to the top 8 bits of
 * the 15 bit distances.
 */

var _length_code  = new Array(MAX_MATCH-MIN_MATCH+1);
zero(_length_code);
/* length code for each normalized match length (0 == MIN_MATCH) */

var base_length   = new Array(LENGTH_CODES);
zero(base_length);
/* First normalized length for each code (0 = MIN_MATCH) */

var base_dist     = new Array(D_CODES);
zero(base_dist);
/* First normalized distance for each code (0 = distance of 1) */


var StaticTreeDesc = function (static_tree, extra_bits, extra_base, elems, max_length) {

  this.static_tree  = static_tree;  /* static tree or NULL */
  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
  this.extra_base   = extra_base;   /* base index for extra_bits */
  this.elems        = elems;        /* max number of elements in the tree */
  this.max_length   = max_length;   /* max bit length for the codes */

  // show if `static_tree` has data or dummy - needed for monomorphic objects
  this.has_stree    = static_tree && static_tree.length;
};


var static_l_desc;
var static_d_desc;
var static_bl_desc;


var TreeDesc = function(dyn_tree, stat_desc) {
  this.dyn_tree = dyn_tree;     /* the dynamic tree */
  this.max_code = 0;            /* largest code with non zero frequency */
  this.stat_desc = stat_desc;   /* the corresponding static tree */
};



function d_code(dist) {
  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
}


/* ===========================================================================
 * Output a short LSB first on the stream.
 * IN assertion: there is enough room in pendingBuf.
 */
function put_short (s, w) {
//    put_byte(s, (uch)((w) & 0xff));
//    put_byte(s, (uch)((ush)(w) >> 8));
  s.pending_buf[s.pending++] = (w) & 0xff;
  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
}


/* ===========================================================================
 * Send a value on a given number of bits.
 * IN assertion: length <= 16 and value fits in length bits.
 */
function send_bits(s, value, length) {
  if (s.bi_valid > (Buf_size - length)) {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    put_short(s, s.bi_buf);
    s.bi_buf = value >> (Buf_size - s.bi_valid);
    s.bi_valid += length - Buf_size;
  } else {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    s.bi_valid += length;
  }
}


function send_code(s, c, tree) {
  send_bits(s, tree[c*2]/*.Code*/, tree[c*2 + 1]/*.Len*/);
}


/* ===========================================================================
 * Reverse the first len bits of a code, using straightforward code (a faster
 * method would use a table)
 * IN assertion: 1 <= len <= 15
 */
function bi_reverse(code, len) {
  var res = 0;
  do {
    res |= code & 1;
    code >>>= 1;
    res <<= 1;
  } while (--len > 0);
  return res >>> 1;
}


/* ===========================================================================
 * Flush the bit buffer, keeping at most 7 bits in it.
 */
function bi_flush(s) {
  if (s.bi_valid === 16) {
    put_short(s, s.bi_buf);
    s.bi_buf = 0;
    s.bi_valid = 0;

  } else if (s.bi_valid >= 8) {
    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
    s.bi_buf >>= 8;
    s.bi_valid -= 8;
  }
}


/* ===========================================================================
 * Compute the optimal bit lengths for a tree and update the total bit length
 * for the current block.
 * IN assertion: the fields freq and dad are set, heap[heap_max] and
 *    above are the tree nodes sorted by increasing frequency.
 * OUT assertions: the field len is set to the optimal bit length, the
 *     array bl_count contains the frequencies for each bit length.
 *     The length opt_len is updated; static_len is also updated if stree is
 *     not null.
 */
function gen_bitlen(s, desc)
//    deflate_state *s;
//    tree_desc *desc;    /* the tree descriptor */
{
  var tree            = desc.dyn_tree;
  var max_code        = desc.max_code;
  var stree           = desc.stat_desc.static_tree;
  var has_stree       = desc.stat_desc.has_stree;
  var extra           = desc.stat_desc.extra_bits;
  var base            = desc.stat_desc.extra_base;
  var max_length      = desc.stat_desc.max_length;
  var h;              /* heap index */
  var n, m;           /* iterate over the tree elements */
  var bits;           /* bit length */
  var xbits;          /* extra bits */
  var f;              /* frequency */
  var overflow = 0;   /* number of elements with bit length too large */

  for (bits = 0; bits <= MAX_BITS; bits++) {
    s.bl_count[bits] = 0;
  }

  /* In a first pass, compute the optimal bit lengths (which may
   * overflow in the case of the bit length tree).
   */
  tree[s.heap[s.heap_max]*2 + 1]/*.Len*/ = 0; /* root of the heap */

  for (h = s.heap_max+1; h < HEAP_SIZE; h++) {
    n = s.heap[h];
    bits = tree[tree[n*2 +1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
    if (bits > max_length) {
      bits = max_length;
      overflow++;
    }
    tree[n*2 + 1]/*.Len*/ = bits;
    /* We overwrite tree[n].Dad which is no longer needed */

    if (n > max_code) { continue; } /* not a leaf node */

    s.bl_count[bits]++;
    xbits = 0;
    if (n >= base) {
      xbits = extra[n-base];
    }
    f = tree[n * 2]/*.Freq*/;
    s.opt_len += f * (bits + xbits);
    if (has_stree) {
      s.static_len += f * (stree[n*2 + 1]/*.Len*/ + xbits);
    }
  }
  if (overflow === 0) { return; }

  // Trace((stderr,"\nbit length overflow\n"));
  /* This happens for example on obj2 and pic of the Calgary corpus */

  /* Find the first bit length which could increase: */
  do {
    bits = max_length-1;
    while (s.bl_count[bits] === 0) { bits--; }
    s.bl_count[bits]--;      /* move one leaf down the tree */
    s.bl_count[bits+1] += 2; /* move one overflow item as its brother */
    s.bl_count[max_length]--;
    /* The brother of the overflow item also moves one step up,
     * but this does not affect bl_count[max_length]
     */
    overflow -= 2;
  } while (overflow > 0);

  /* Now recompute all bit lengths, scanning in increasing frequency.
   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
   * lengths instead of fixing only the wrong ones. This idea is taken
   * from 'ar' written by Haruhiko Okumura.)
   */
  for (bits = max_length; bits !== 0; bits--) {
    n = s.bl_count[bits];
    while (n !== 0) {
      m = s.heap[--h];
      if (m > max_code) { continue; }
      if (tree[m*2 + 1]/*.Len*/ !== bits) {
        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
        s.opt_len += (bits - tree[m*2 + 1]/*.Len*/)*tree[m*2]/*.Freq*/;
        tree[m*2 + 1]/*.Len*/ = bits;
      }
      n--;
    }
  }
}


/* ===========================================================================
 * Generate the codes for a given tree and bit counts (which need not be
 * optimal).
 * IN assertion: the array bl_count contains the bit length statistics for
 * the given tree and the field len is set for all tree elements.
 * OUT assertion: the field code is set for all tree elements of non
 *     zero code length.
 */
function gen_codes(tree, max_code, bl_count)
//    ct_data *tree;             /* the tree to decorate */
//    int max_code;              /* largest code with non zero frequency */
//    ushf *bl_count;            /* number of codes at each bit length */
{
  var next_code = new Array(MAX_BITS+1); /* next code value for each bit length */
  var code = 0;              /* running code value */
  var bits;                  /* bit index */
  var n;                     /* code index */

  /* The distribution counts are first used to generate the code values
   * without bit reversal.
   */
  for (bits = 1; bits <= MAX_BITS; bits++) {
    next_code[bits] = code = (code + bl_count[bits-1]) << 1;
  }
  /* Check that the bit counts in bl_count are consistent. The last code
   * must be all ones.
   */
  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
  //        "inconsistent bit counts");
  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));

  for (n = 0;  n <= max_code; n++) {
    var len = tree[n*2 + 1]/*.Len*/;
    if (len === 0) { continue; }
    /* Now reverse the bits */
    tree[n*2]/*.Code*/ = bi_reverse(next_code[len]++, len);

    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
  }
}


/* ===========================================================================
 * Initialize the various 'constant' tables.
 */
function tr_static_init() {
  var n;        /* iterates over tree elements */
  var bits;     /* bit counter */
  var length;   /* length value */
  var code;     /* code value */
  var dist;     /* distance index */
  var bl_count = new Array(MAX_BITS+1);
  /* number of codes at each bit length for an optimal tree */

  // do check in _tr_init()
  //if (static_init_done) return;

  /* For some embedded targets, global variables are not initialized: */
/*#ifdef NO_INIT_GLOBAL_POINTERS
  static_l_desc.static_tree = static_ltree;
  static_l_desc.extra_bits = extra_lbits;
  static_d_desc.static_tree = static_dtree;
  static_d_desc.extra_bits = extra_dbits;
  static_bl_desc.extra_bits = extra_blbits;
#endif*/

  /* Initialize the mapping length (0..255) -> length code (0..28) */
  length = 0;
  for (code = 0; code < LENGTH_CODES-1; code++) {
    base_length[code] = length;
    for (n = 0; n < (1<<extra_lbits[code]); n++) {
      _length_code[length++] = code;
    }
  }
  //Assert (length == 256, "tr_static_init: length != 256");
  /* Note that the length 255 (match length 258) can be represented
   * in two different ways: code 284 + 5 bits or code 285, so we
   * overwrite length_code[255] to use the best encoding:
   */
  _length_code[length-1] = code;

  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
  dist = 0;
  for (code = 0 ; code < 16; code++) {
    base_dist[code] = dist;
    for (n = 0; n < (1<<extra_dbits[code]); n++) {
      _dist_code[dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: dist != 256");
  dist >>= 7; /* from now on, all distances are divided by 128 */
  for (; code < D_CODES; code++) {
    base_dist[code] = dist << 7;
    for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
      _dist_code[256 + dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: 256+dist != 512");

  /* Construct the codes of the static literal tree */
  for (bits = 0; bits <= MAX_BITS; bits++) {
    bl_count[bits] = 0;
  }

  n = 0;
  while (n <= 143) {
    static_ltree[n*2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  while (n <= 255) {
    static_ltree[n*2 + 1]/*.Len*/ = 9;
    n++;
    bl_count[9]++;
  }
  while (n <= 279) {
    static_ltree[n*2 + 1]/*.Len*/ = 7;
    n++;
    bl_count[7]++;
  }
  while (n <= 287) {
    static_ltree[n*2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  /* Codes 286 and 287 do not exist, but we must include them in the
   * tree construction to get a canonical Huffman tree (longest code
   * all ones)
   */
  gen_codes(static_ltree, L_CODES+1, bl_count);

  /* The static distance tree is trivial: */
  for (n = 0; n < D_CODES; n++) {
    static_dtree[n*2 + 1]/*.Len*/ = 5;
    static_dtree[n*2]/*.Code*/ = bi_reverse(n, 5);
  }

  // Now data ready and we can init static trees
  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS);
  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
  static_bl_desc =new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);

  //static_init_done = true;
}


/* ===========================================================================
 * Initialize a new block.
 */
function init_block(s) {
  var n; /* iterates over tree elements */

  /* Initialize the trees. */
  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n*2]/*.Freq*/ = 0; }
  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n*2]/*.Freq*/ = 0; }
  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n*2]/*.Freq*/ = 0; }

  s.dyn_ltree[END_BLOCK*2]/*.Freq*/ = 1;
  s.opt_len = s.static_len = 0;
  s.last_lit = s.matches = 0;
}


/* ===========================================================================
 * Flush the bit buffer and align the output on a byte boundary
 */
function bi_windup(s)
{
  if (s.bi_valid > 8) {
    put_short(s, s.bi_buf);
  } else if (s.bi_valid > 0) {
    //put_byte(s, (Byte)s->bi_buf);
    s.pending_buf[s.pending++] = s.bi_buf;
  }
  s.bi_buf = 0;
  s.bi_valid = 0;
}

/* ===========================================================================
 * Copy a stored block, storing first the length and its
 * one's complement if requested.
 */
function copy_block(s, buf, len, header)
//DeflateState *s;
//charf    *buf;    /* the input data */
//unsigned len;     /* its length */
//int      header;  /* true if block header must be written */
{
  bi_windup(s);        /* align on byte boundary */

  if (header) {
    put_short(s, len);
    put_short(s, ~len);
  }
//  while (len--) {
//    put_byte(s, *buf++);
//  }
  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
  s.pending += len;
}

/* ===========================================================================
 * Compares to subtrees, using the tree depth as tie breaker when
 * the subtrees have equal frequency. This minimizes the worst case length.
 */
function smaller(tree, n, m, depth) {
  var _n2 = n*2;
  var _m2 = m*2;
  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
}

/* ===========================================================================
 * Restore the heap property by moving down the tree starting at node k,
 * exchanging a node with the smallest of its two sons if necessary, stopping
 * when the heap property is re-established (each father smaller than its
 * two sons).
 */
function pqdownheap(s, tree, k)
//    deflate_state *s;
//    ct_data *tree;  /* the tree to restore */
//    int k;               /* node to move down */
{
  var v = s.heap[k];
  var j = k << 1;  /* left son of k */
  while (j <= s.heap_len) {
    /* Set j to the smallest of the two sons: */
    if (j < s.heap_len &&
      smaller(tree, s.heap[j+1], s.heap[j], s.depth)) {
      j++;
    }
    /* Exit if v is smaller than both sons */
    if (smaller(tree, v, s.heap[j], s.depth)) { break; }

    /* Exchange v with the smallest son */
    s.heap[k] = s.heap[j];
    k = j;

    /* And continue down the tree, setting j to the left son of k */
    j <<= 1;
  }
  s.heap[k] = v;
}


// inlined manually
// var SMALLEST = 1;

/* ===========================================================================
 * Send the block data compressed using the given Huffman trees
 */
function compress_block(s, ltree, dtree)
//    deflate_state *s;
//    const ct_data *ltree; /* literal tree */
//    const ct_data *dtree; /* distance tree */
{
  var dist;           /* distance of matched string */
  var lc;             /* match length or unmatched char (if dist == 0) */
  var lx = 0;         /* running index in l_buf */
  var code;           /* the code to send */
  var extra;          /* number of extra bits to send */

  if (s.last_lit !== 0) {
    do {
      dist = (s.pending_buf[s.d_buf + lx*2] << 8) | (s.pending_buf[s.d_buf + lx*2 + 1]);
      lc = s.pending_buf[s.l_buf + lx];
      lx++;

      if (dist === 0) {
        send_code(s, lc, ltree); /* send a literal byte */
        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
      } else {
        /* Here, lc is the match length - MIN_MATCH */
        code = _length_code[lc];
        send_code(s, code+LITERALS+1, ltree); /* send the length code */
        extra = extra_lbits[code];
        if (extra !== 0) {
          lc -= base_length[code];
          send_bits(s, lc, extra);       /* send the extra length bits */
        }
        dist--; /* dist is now the match distance - 1 */
        code = d_code(dist);
        //Assert (code < D_CODES, "bad d_code");

        send_code(s, code, dtree);       /* send the distance code */
        extra = extra_dbits[code];
        if (extra !== 0) {
          dist -= base_dist[code];
          send_bits(s, dist, extra);   /* send the extra distance bits */
        }
      } /* literal or match pair ? */

      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
      //       "pendingBuf overflow");

    } while (lx < s.last_lit);
  }

  send_code(s, END_BLOCK, ltree);
}


/* ===========================================================================
 * Construct one Huffman tree and assigns the code bit strings and lengths.
 * Update the total bit length for the current block.
 * IN assertion: the field freq is set for all tree elements.
 * OUT assertions: the fields len and code are set to the optimal bit length
 *     and corresponding code. The length opt_len is updated; static_len is
 *     also updated if stree is not null. The field max_code is set.
 */
function build_tree(s, desc)
//    deflate_state *s;
//    tree_desc *desc; /* the tree descriptor */
{
  var tree     = desc.dyn_tree;
  var stree    = desc.stat_desc.static_tree;
  var has_stree = desc.stat_desc.has_stree;
  var elems    = desc.stat_desc.elems;
  var n, m;          /* iterate over heap elements */
  var max_code = -1; /* largest code with non zero frequency */
  var node;          /* new node being created */

  /* Construct the initial heap, with least frequent element in
   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
   * heap[0] is not used.
   */
  s.heap_len = 0;
  s.heap_max = HEAP_SIZE;

  for (n = 0; n < elems; n++) {
    if (tree[n * 2]/*.Freq*/ !== 0) {
      s.heap[++s.heap_len] = max_code = n;
      s.depth[n] = 0;

    } else {
      tree[n*2 + 1]/*.Len*/ = 0;
    }
  }

  /* The pkzip format requires that at least one distance code exists,
   * and that at least one bit should be sent even if there is only one
   * possible code. So to avoid special checks later on we force at least
   * two codes of non zero frequency.
   */
  while (s.heap_len < 2) {
    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
    tree[node * 2]/*.Freq*/ = 1;
    s.depth[node] = 0;
    s.opt_len--;

    if (has_stree) {
      s.static_len -= stree[node*2 + 1]/*.Len*/;
    }
    /* node is 0 or 1 so it does not have extra bits */
  }
  desc.max_code = max_code;

  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
   * establish sub-heaps of increasing lengths:
   */
  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }

  /* Construct the Huffman tree by repeatedly combining the least two
   * frequent nodes.
   */
  node = elems;              /* next internal node of the tree */
  do {
    //pqremove(s, tree, n);  /* n = node of least frequency */
    /*** pqremove ***/
    n = s.heap[1/*SMALLEST*/];
    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
    pqdownheap(s, tree, 1/*SMALLEST*/);
    /***/

    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */

    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
    s.heap[--s.heap_max] = m;

    /* Create a new node father of n and m */
    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
    tree[n*2 + 1]/*.Dad*/ = tree[m*2 + 1]/*.Dad*/ = node;

    /* and insert the new node in the heap */
    s.heap[1/*SMALLEST*/] = node++;
    pqdownheap(s, tree, 1/*SMALLEST*/);

  } while (s.heap_len >= 2);

  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];

  /* At this point, the fields freq and dad are set. We can now
   * generate the bit lengths.
   */
  gen_bitlen(s, desc);

  /* The field len is now set, we can generate the bit codes */
  gen_codes(tree, max_code, s.bl_count);
}


/* ===========================================================================
 * Scan a literal or distance tree to determine the frequencies of the codes
 * in the bit length tree.
 */
function scan_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree;   /* the tree to be scanned */
//    int max_code;    /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }
  tree[(max_code+1)*2 + 1]/*.Len*/ = 0xffff; /* guard */

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n+1)*2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      s.bl_tree[curlen * 2]/*.Freq*/ += count;

    } else if (curlen !== 0) {

      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
      s.bl_tree[REP_3_6*2]/*.Freq*/++;

    } else if (count <= 10) {
      s.bl_tree[REPZ_3_10*2]/*.Freq*/++;

    } else {
      s.bl_tree[REPZ_11_138*2]/*.Freq*/++;
    }

    count = 0;
    prevlen = curlen;

    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Send a literal or distance tree in compressed form, using the codes in
 * bl_tree.
 */
function send_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree; /* the tree to be scanned */
//    int max_code;       /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0*2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  /* tree[max_code+1].Len = -1; */  /* guard already set */
  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n+1)*2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);

    } else if (curlen !== 0) {
      if (curlen !== prevlen) {
        send_code(s, curlen, s.bl_tree);
        count--;
      }
      //Assert(count >= 3 && count <= 6, " 3_6?");
      send_code(s, REP_3_6, s.bl_tree);
      send_bits(s, count-3, 2);

    } else if (count <= 10) {
      send_code(s, REPZ_3_10, s.bl_tree);
      send_bits(s, count-3, 3);

    } else {
      send_code(s, REPZ_11_138, s.bl_tree);
      send_bits(s, count-11, 7);
    }

    count = 0;
    prevlen = curlen;
    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Construct the Huffman tree for the bit lengths and return the index in
 * bl_order of the last bit length code to send.
 */
function build_bl_tree(s) {
  var max_blindex;  /* index of last bit length code of non zero freq */

  /* Determine the bit length frequencies for literal and distance trees */
  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);

  /* Build the bit length tree: */
  build_tree(s, s.bl_desc);
  /* opt_len now includes the length of the tree representations, except
   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
   */

  /* Determine the number of bit length codes to send. The pkzip format
   * requires that at least 4 bit length codes be sent. (appnote.txt says
   * 3 but the actual value used is 4.)
   */
  for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
    if (s.bl_tree[bl_order[max_blindex]*2 + 1]/*.Len*/ !== 0) {
      break;
    }
  }
  /* Update opt_len to include the bit length tree and counts */
  s.opt_len += 3*(max_blindex+1) + 5+5+4;
  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
  //        s->opt_len, s->static_len));

  return max_blindex;
}


/* ===========================================================================
 * Send the header for a block using dynamic Huffman trees: the counts, the
 * lengths of the bit length codes, the literal tree and the distance tree.
 * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
 */
function send_all_trees(s, lcodes, dcodes, blcodes)
//    deflate_state *s;
//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
{
  var rank;                    /* index in bl_order */

  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
  //        "too many codes");
  //Tracev((stderr, "\nbl counts: "));
  send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
  send_bits(s, dcodes-1,   5);
  send_bits(s, blcodes-4,  4); /* not -3 as stated in appnote.txt */
  for (rank = 0; rank < blcodes; rank++) {
    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
    send_bits(s, s.bl_tree[bl_order[rank]*2 + 1]/*.Len*/, 3);
  }
  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_ltree, lcodes-1); /* literal tree */
  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_dtree, dcodes-1); /* distance tree */
  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}


/* ===========================================================================
 * Check if the data type is TEXT or BINARY, using the following algorithm:
 * - TEXT if the two conditions below are satisfied:
 *    a) There are no non-portable control characters belonging to the
 *       "black list" (0..6, 14..25, 28..31).
 *    b) There is at least one printable character belonging to the
 *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
 * - BINARY otherwise.
 * - The following partially-portable control characters form a
 *   "gray list" that is ignored in this detection algorithm:
 *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
 * IN assertion: the fields Freq of dyn_ltree are set.
 */
function detect_data_type(s) {
  /* black_mask is the bit mask of black-listed bytes
   * set bits 0..6, 14..25, and 28..31
   * 0xf3ffc07f = binary 11110011111111111100000001111111
   */
  var black_mask = 0xf3ffc07f;
  var n;

  /* Check for non-textual ("black-listed") bytes. */
  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
    if ((black_mask & 1) && (s.dyn_ltree[n*2]/*.Freq*/ !== 0)) {
      return Z_BINARY;
    }
  }

  /* Check for textual ("white-listed") bytes. */
  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
    return Z_TEXT;
  }
  for (n = 32; n < LITERALS; n++) {
    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
      return Z_TEXT;
    }
  }

  /* There are no "black-listed" or "white-listed" bytes:
   * this stream either is empty or has tolerated ("gray-listed") bytes only.
   */
  return Z_BINARY;
}


var static_init_done = false;

/* ===========================================================================
 * Initialize the tree data structures for a new zlib stream.
 */
function _tr_init(s)
{

  if (!static_init_done) {
    tr_static_init();
    static_init_done = true;
  }

  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);

  s.bi_buf = 0;
  s.bi_valid = 0;

  /* Initialize the first block of the first file: */
  init_block(s);
}


/* ===========================================================================
 * Send a stored block
 */
function _tr_stored_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  send_bits(s, (STORED_BLOCK<<1)+(last ? 1 : 0), 3);    /* send block type */
  copy_block(s, buf, stored_len, true); /* with header */
}


/* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
 */
function _tr_align(s) {
  send_bits(s, STATIC_TREES<<1, 3);
  send_code(s, END_BLOCK, static_ltree);
  bi_flush(s);
}


/* ===========================================================================
 * Determine the best encoding for the current block: dynamic trees, static
 * trees or store, and output the encoded block to the zip file.
 */
function _tr_flush_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block, or NULL if too old */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
  var max_blindex = 0;        /* index of last bit length code of non zero freq */

  /* Build the Huffman trees unless a stored block is forced */
  if (s.level > 0) {

    /* Check if the file is binary or text */
    if (s.strm.data_type === Z_UNKNOWN) {
      s.strm.data_type = detect_data_type(s);
    }

    /* Construct the literal and distance trees */
    build_tree(s, s.l_desc);
    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));

    build_tree(s, s.d_desc);
    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));
    /* At this point, opt_len and static_len are the total bit lengths of
     * the compressed block data, excluding the tree representations.
     */

    /* Build the bit length tree for the above two trees, and get the index
     * in bl_order of the last bit length code to send.
     */
    max_blindex = build_bl_tree(s);

    /* Determine the best encoding. Compute the block lengths in bytes. */
    opt_lenb = (s.opt_len+3+7) >>> 3;
    static_lenb = (s.static_len+3+7) >>> 3;

    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
    //        s->last_lit));

    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }

  } else {
    // Assert(buf != (char*)0, "lost buf");
    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
  }

  if ((stored_len+4 <= opt_lenb) && (buf !== -1)) {
    /* 4: two words for the lengths */

    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
     * Otherwise we can't have processed more than WSIZE input bytes since
     * the last block flush, because compression would have been
     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
     * transform a block into a stored block.
     */
    _tr_stored_block(s, buf, stored_len, last);

  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {

    send_bits(s, (STATIC_TREES<<1) + (last ? 1 : 0), 3);
    compress_block(s, static_ltree, static_dtree);

  } else {
    send_bits(s, (DYN_TREES<<1) + (last ? 1 : 0), 3);
    send_all_trees(s, s.l_desc.max_code+1, s.d_desc.max_code+1, max_blindex+1);
    compress_block(s, s.dyn_ltree, s.dyn_dtree);
  }
  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
  /* The above check is made mod 2^32, for files larger than 512 MB
   * and uLong implemented on 32 bits.
   */
  init_block(s);

  if (last) {
    bi_windup(s);
  }
  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
  //       s->compressed_len-7*last));
}

/* ===========================================================================
 * Save the match info and tally the frequency counts. Return true if
 * the current block must be flushed.
 */
function _tr_tally(s, dist, lc)
//    deflate_state *s;
//    unsigned dist;  /* distance of matched string */
//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
{
  //var out_length, in_length, dcode;

  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;

  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
  s.last_lit++;

  if (dist === 0) {
    /* lc is the unmatched char */
    s.dyn_ltree[lc*2]/*.Freq*/++;
  } else {
    s.matches++;
    /* Here, lc is the match length - MIN_MATCH */
    dist--;             /* dist = match distance - 1 */
    //Assert((ush)dist < (ush)MAX_DIST(s) &&
    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");

    s.dyn_ltree[(_length_code[lc]+LITERALS+1) * 2]/*.Freq*/++;
    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
  }

// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility

//#ifdef TRUNCATE_BLOCK
//  /* Try to guess if it is profitable to stop the current block here */
//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
//    /* Compute an upper bound for the compressed length */
//    out_length = s.last_lit*8;
//    in_length = s.strstart - s.block_start;
//
//    for (dcode = 0; dcode < D_CODES; dcode++) {
//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
//    }
//    out_length >>>= 3;
//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
//    //       s->last_lit, in_length, out_length,
//    //       100L - out_length*100L/in_length));
//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
//      return true;
//    }
//  }
//#endif

  return (s.last_lit === s.lit_bufsize-1);
  /* We avoid equality with lit_bufsize because of wraparound at 64K
   * on 16 bit machines and because stored blocks are restricted to
   * 64K-1 bytes.
   */
}

exports._tr_init  = _tr_init;
exports._tr_stored_block = _tr_stored_block;
exports._tr_flush_block  = _tr_flush_block;
exports._tr_tally = _tr_tally;
exports._tr_align = _tr_align;

},{"../utils/common":164}],174:[function(require,module,exports){
'use strict';


function ZStream() {
  /* next input byte */
  this.input = null; // JS specific, because we have no pointers
  this.next_in = 0;
  /* number of bytes available at input */
  this.avail_in = 0;
  /* total number of input bytes read so far */
  this.total_in = 0;
  /* next output byte should be put there */
  this.output = null; // JS specific, because we have no pointers
  this.next_out = 0;
  /* remaining free space at output */
  this.avail_out = 0;
  /* total number of bytes output so far */
  this.total_out = 0;
  /* last error message, NULL if no error */
  this.msg = ''/*Z_NULL*/;
  /* not visible by applications */
  this.state = null;
  /* best guess about the data type: binary or text */
  this.data_type = 2/*Z_UNKNOWN*/;
  /* adler32 value of the uncompressed data */
  this.adler = 0;
}

module.exports = ZStream;

},{}],175:[function(require,module,exports){
(function (process,Buffer){
var msg = require('pako/lib/zlib/messages');
var zstream = require('pako/lib/zlib/zstream');
var zlib_deflate = require('pako/lib/zlib/deflate.js');
var zlib_inflate = require('pako/lib/zlib/inflate.js');
var constants = require('pako/lib/zlib/constants');

for (var key in constants) {
  exports[key] = constants[key];
}

// zlib modes
exports.NONE = 0;
exports.DEFLATE = 1;
exports.INFLATE = 2;
exports.GZIP = 3;
exports.GUNZIP = 4;
exports.DEFLATERAW = 5;
exports.INFLATERAW = 6;
exports.UNZIP = 7;

/**
 * Emulate Node's zlib C++ layer for use by the JS layer in index.js
 */
function Zlib(mode) {
  if (mode < exports.DEFLATE || mode > exports.UNZIP)
    throw new TypeError("Bad argument");
    
  this.mode = mode;
  this.init_done = false;
  this.write_in_progress = false;
  this.pending_close = false;
  this.windowBits = 0;
  this.level = 0;
  this.memLevel = 0;
  this.strategy = 0;
  this.dictionary = null;
}

Zlib.prototype.init = function(windowBits, level, memLevel, strategy, dictionary) {
  this.windowBits = windowBits;
  this.level = level;
  this.memLevel = memLevel;
  this.strategy = strategy;
  // dictionary not supported.
  
  if (this.mode === exports.GZIP || this.mode === exports.GUNZIP)
    this.windowBits += 16;
    
  if (this.mode === exports.UNZIP)
    this.windowBits += 32;
    
  if (this.mode === exports.DEFLATERAW || this.mode === exports.INFLATERAW)
    this.windowBits = -this.windowBits;
    
  this.strm = new zstream();
  
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.GZIP:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflateInit2(
        this.strm,
        this.level,
        exports.Z_DEFLATED,
        this.windowBits,
        this.memLevel,
        this.strategy
      );
      break;
    case exports.INFLATE:
    case exports.GUNZIP:
    case exports.INFLATERAW:
    case exports.UNZIP:
      var status  = zlib_inflate.inflateInit2(
        this.strm,
        this.windowBits
      );
      break;
    default:
      throw new Error("Unknown mode " + this.mode);
  }
  
  if (status !== exports.Z_OK) {
    this._error(status);
    return;
  }
  
  this.write_in_progress = false;
  this.init_done = true;
};

Zlib.prototype.params = function() {
  throw new Error("deflateParams Not supported");
};

Zlib.prototype._writeCheck = function() {
  if (!this.init_done)
    throw new Error("write before init");
    
  if (this.mode === exports.NONE)
    throw new Error("already finalized");
    
  if (this.write_in_progress)
    throw new Error("write already in progress");
    
  if (this.pending_close)
    throw new Error("close is pending");
};

Zlib.prototype.write = function(flush, input, in_off, in_len, out, out_off, out_len) {    
  this._writeCheck();
  this.write_in_progress = true;
  
  var self = this;
  process.nextTick(function() {
    self.write_in_progress = false;
    var res = self._write(flush, input, in_off, in_len, out, out_off, out_len);
    self.callback(res[0], res[1]);
    
    if (self.pending_close)
      self.close();
  });
  
  return this;
};

// set method for Node buffers, used by pako
function bufferSet(data, offset) {
  for (var i = 0; i < data.length; i++) {
    this[offset + i] = data[i];
  }
}

Zlib.prototype.writeSync = function(flush, input, in_off, in_len, out, out_off, out_len) {
  this._writeCheck();
  return this._write(flush, input, in_off, in_len, out, out_off, out_len);
};

Zlib.prototype._write = function(flush, input, in_off, in_len, out, out_off, out_len) {
  this.write_in_progress = true;
  
  if (flush !== exports.Z_NO_FLUSH &&
      flush !== exports.Z_PARTIAL_FLUSH &&
      flush !== exports.Z_SYNC_FLUSH &&
      flush !== exports.Z_FULL_FLUSH &&
      flush !== exports.Z_FINISH &&
      flush !== exports.Z_BLOCK) {
    throw new Error("Invalid flush value");
  }
  
  if (input == null) {
    input = new Buffer(0);
    in_len = 0;
    in_off = 0;
  }
  
  if (out._set)
    out.set = out._set;
  else
    out.set = bufferSet;
  
  var strm = this.strm;
  strm.avail_in = in_len;
  strm.input = input;
  strm.next_in = in_off;
  strm.avail_out = out_len;
  strm.output = out;
  strm.next_out = out_off;
  
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.GZIP:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflate(strm, flush);
      break;
    case exports.UNZIP:
    case exports.INFLATE:
    case exports.GUNZIP:
    case exports.INFLATERAW:
      var status = zlib_inflate.inflate(strm, flush);
      break;
    default:
      throw new Error("Unknown mode " + this.mode);
  }
  
  if (status !== exports.Z_STREAM_END && status !== exports.Z_OK) {
    this._error(status);
  }
  
  this.write_in_progress = false;
  return [strm.avail_in, strm.avail_out];
};

Zlib.prototype.close = function() {
  if (this.write_in_progress) {
    this.pending_close = true;
    return;
  }
  
  this.pending_close = false;
  
  if (this.mode === exports.DEFLATE || this.mode === exports.GZIP || this.mode === exports.DEFLATERAW) {
    zlib_deflate.deflateEnd(this.strm);
  } else {
    zlib_inflate.inflateEnd(this.strm);
  }
  
  this.mode = exports.NONE;
};

Zlib.prototype.reset = function() {
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflateReset(this.strm);
      break;
    case exports.INFLATE:
    case exports.INFLATERAW:
      var status = zlib_inflate.inflateReset(this.strm);
      break;
  }
  
  if (status !== exports.Z_OK) {
    this._error(status);
  }
};

Zlib.prototype._error = function(status) {
  this.onerror(msg[status] + ': ' + this.strm.msg, status);
  
  this.write_in_progress = false;
  if (this.pending_close)
    this.close();
};

exports.Zlib = Zlib;

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":381,"buffer":177,"pako/lib/zlib/constants":166,"pako/lib/zlib/deflate.js":168,"pako/lib/zlib/inflate.js":170,"pako/lib/zlib/messages":172,"pako/lib/zlib/zstream":174}],176:[function(require,module,exports){
(function (process,Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Transform = require('_stream_transform');

var binding = require('./binding');
var util = require('util');
var assert = require('assert').ok;

// zlib doesn't provide these, so kludge them in following the same
// const naming scheme zlib uses.
binding.Z_MIN_WINDOWBITS = 8;
binding.Z_MAX_WINDOWBITS = 15;
binding.Z_DEFAULT_WINDOWBITS = 15;

// fewer than 64 bytes per chunk is stupid.
// technically it could work with as few as 8, but even 64 bytes
// is absurdly low.  Usually a MB or more is best.
binding.Z_MIN_CHUNK = 64;
binding.Z_MAX_CHUNK = Infinity;
binding.Z_DEFAULT_CHUNK = (16 * 1024);

binding.Z_MIN_MEMLEVEL = 1;
binding.Z_MAX_MEMLEVEL = 9;
binding.Z_DEFAULT_MEMLEVEL = 8;

binding.Z_MIN_LEVEL = -1;
binding.Z_MAX_LEVEL = 9;
binding.Z_DEFAULT_LEVEL = binding.Z_DEFAULT_COMPRESSION;

// expose all the zlib constants
Object.keys(binding).forEach(function(k) {
  if (k.match(/^Z/)) exports[k] = binding[k];
});

// translation table for return codes.
exports.codes = {
  Z_OK: binding.Z_OK,
  Z_STREAM_END: binding.Z_STREAM_END,
  Z_NEED_DICT: binding.Z_NEED_DICT,
  Z_ERRNO: binding.Z_ERRNO,
  Z_STREAM_ERROR: binding.Z_STREAM_ERROR,
  Z_DATA_ERROR: binding.Z_DATA_ERROR,
  Z_MEM_ERROR: binding.Z_MEM_ERROR,
  Z_BUF_ERROR: binding.Z_BUF_ERROR,
  Z_VERSION_ERROR: binding.Z_VERSION_ERROR
};

Object.keys(exports.codes).forEach(function(k) {
  exports.codes[exports.codes[k]] = k;
});

exports.Deflate = Deflate;
exports.Inflate = Inflate;
exports.Gzip = Gzip;
exports.Gunzip = Gunzip;
exports.DeflateRaw = DeflateRaw;
exports.InflateRaw = InflateRaw;
exports.Unzip = Unzip;

exports.createDeflate = function(o) {
  return new Deflate(o);
};

exports.createInflate = function(o) {
  return new Inflate(o);
};

exports.createDeflateRaw = function(o) {
  return new DeflateRaw(o);
};

exports.createInflateRaw = function(o) {
  return new InflateRaw(o);
};

exports.createGzip = function(o) {
  return new Gzip(o);
};

exports.createGunzip = function(o) {
  return new Gunzip(o);
};

exports.createUnzip = function(o) {
  return new Unzip(o);
};


// Convenience methods.
// compress/decompress a string or buffer in one step.
exports.deflate = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Deflate(opts), buffer, callback);
};

exports.deflateSync = function(buffer, opts) {
  return zlibBufferSync(new Deflate(opts), buffer);
};

exports.gzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Gzip(opts), buffer, callback);
};

exports.gzipSync = function(buffer, opts) {
  return zlibBufferSync(new Gzip(opts), buffer);
};

exports.deflateRaw = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new DeflateRaw(opts), buffer, callback);
};

exports.deflateRawSync = function(buffer, opts) {
  return zlibBufferSync(new DeflateRaw(opts), buffer);
};

exports.unzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Unzip(opts), buffer, callback);
};

exports.unzipSync = function(buffer, opts) {
  return zlibBufferSync(new Unzip(opts), buffer);
};

exports.inflate = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Inflate(opts), buffer, callback);
};

exports.inflateSync = function(buffer, opts) {
  return zlibBufferSync(new Inflate(opts), buffer);
};

exports.gunzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Gunzip(opts), buffer, callback);
};

exports.gunzipSync = function(buffer, opts) {
  return zlibBufferSync(new Gunzip(opts), buffer);
};

exports.inflateRaw = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new InflateRaw(opts), buffer, callback);
};

exports.inflateRawSync = function(buffer, opts) {
  return zlibBufferSync(new InflateRaw(opts), buffer);
};

function zlibBuffer(engine, buffer, callback) {
  var buffers = [];
  var nread = 0;

  engine.on('error', onError);
  engine.on('end', onEnd);

  engine.end(buffer);
  flow();

  function flow() {
    var chunk;
    while (null !== (chunk = engine.read())) {
      buffers.push(chunk);
      nread += chunk.length;
    }
    engine.once('readable', flow);
  }

  function onError(err) {
    engine.removeListener('end', onEnd);
    engine.removeListener('readable', flow);
    callback(err);
  }

  function onEnd() {
    var buf = Buffer.concat(buffers, nread);
    buffers = [];
    callback(null, buf);
    engine.close();
  }
}

function zlibBufferSync(engine, buffer) {
  if (typeof buffer === 'string')
    buffer = new Buffer(buffer);
  if (!Buffer.isBuffer(buffer))
    throw new TypeError('Not a string or buffer');

  var flushFlag = binding.Z_FINISH;

  return engine._processChunk(buffer, flushFlag);
}

// generic zlib
// minimal 2-byte header
function Deflate(opts) {
  if (!(this instanceof Deflate)) return new Deflate(opts);
  Zlib.call(this, opts, binding.DEFLATE);
}

function Inflate(opts) {
  if (!(this instanceof Inflate)) return new Inflate(opts);
  Zlib.call(this, opts, binding.INFLATE);
}



// gzip - bigger header, same deflate compression
function Gzip(opts) {
  if (!(this instanceof Gzip)) return new Gzip(opts);
  Zlib.call(this, opts, binding.GZIP);
}

function Gunzip(opts) {
  if (!(this instanceof Gunzip)) return new Gunzip(opts);
  Zlib.call(this, opts, binding.GUNZIP);
}



// raw - no header
function DeflateRaw(opts) {
  if (!(this instanceof DeflateRaw)) return new DeflateRaw(opts);
  Zlib.call(this, opts, binding.DEFLATERAW);
}

function InflateRaw(opts) {
  if (!(this instanceof InflateRaw)) return new InflateRaw(opts);
  Zlib.call(this, opts, binding.INFLATERAW);
}


// auto-detect header.
function Unzip(opts) {
  if (!(this instanceof Unzip)) return new Unzip(opts);
  Zlib.call(this, opts, binding.UNZIP);
}


// the Zlib class they all inherit from
// This thing manages the queue of requests, and returns
// true or false if there is anything in the queue when
// you call the .write() method.

function Zlib(opts, mode) {
  this._opts = opts = opts || {};
  this._chunkSize = opts.chunkSize || exports.Z_DEFAULT_CHUNK;

  Transform.call(this, opts);

  if (opts.flush) {
    if (opts.flush !== binding.Z_NO_FLUSH &&
        opts.flush !== binding.Z_PARTIAL_FLUSH &&
        opts.flush !== binding.Z_SYNC_FLUSH &&
        opts.flush !== binding.Z_FULL_FLUSH &&
        opts.flush !== binding.Z_FINISH &&
        opts.flush !== binding.Z_BLOCK) {
      throw new Error('Invalid flush flag: ' + opts.flush);
    }
  }
  this._flushFlag = opts.flush || binding.Z_NO_FLUSH;

  if (opts.chunkSize) {
    if (opts.chunkSize < exports.Z_MIN_CHUNK ||
        opts.chunkSize > exports.Z_MAX_CHUNK) {
      throw new Error('Invalid chunk size: ' + opts.chunkSize);
    }
  }

  if (opts.windowBits) {
    if (opts.windowBits < exports.Z_MIN_WINDOWBITS ||
        opts.windowBits > exports.Z_MAX_WINDOWBITS) {
      throw new Error('Invalid windowBits: ' + opts.windowBits);
    }
  }

  if (opts.level) {
    if (opts.level < exports.Z_MIN_LEVEL ||
        opts.level > exports.Z_MAX_LEVEL) {
      throw new Error('Invalid compression level: ' + opts.level);
    }
  }

  if (opts.memLevel) {
    if (opts.memLevel < exports.Z_MIN_MEMLEVEL ||
        opts.memLevel > exports.Z_MAX_MEMLEVEL) {
      throw new Error('Invalid memLevel: ' + opts.memLevel);
    }
  }

  if (opts.strategy) {
    if (opts.strategy != exports.Z_FILTERED &&
        opts.strategy != exports.Z_HUFFMAN_ONLY &&
        opts.strategy != exports.Z_RLE &&
        opts.strategy != exports.Z_FIXED &&
        opts.strategy != exports.Z_DEFAULT_STRATEGY) {
      throw new Error('Invalid strategy: ' + opts.strategy);
    }
  }

  if (opts.dictionary) {
    if (!Buffer.isBuffer(opts.dictionary)) {
      throw new Error('Invalid dictionary: it should be a Buffer instance');
    }
  }

  this._binding = new binding.Zlib(mode);

  var self = this;
  this._hadError = false;
  this._binding.onerror = function(message, errno) {
    // there is no way to cleanly recover.
    // continuing only obscures problems.
    self._binding = null;
    self._hadError = true;

    var error = new Error(message);
    error.errno = errno;
    error.code = exports.codes[errno];
    self.emit('error', error);
  };

  var level = exports.Z_DEFAULT_COMPRESSION;
  if (typeof opts.level === 'number') level = opts.level;

  var strategy = exports.Z_DEFAULT_STRATEGY;
  if (typeof opts.strategy === 'number') strategy = opts.strategy;

  this._binding.init(opts.windowBits || exports.Z_DEFAULT_WINDOWBITS,
                     level,
                     opts.memLevel || exports.Z_DEFAULT_MEMLEVEL,
                     strategy,
                     opts.dictionary);

  this._buffer = new Buffer(this._chunkSize);
  this._offset = 0;
  this._closed = false;
  this._level = level;
  this._strategy = strategy;

  this.once('end', this.close);
}

util.inherits(Zlib, Transform);

Zlib.prototype.params = function(level, strategy, callback) {
  if (level < exports.Z_MIN_LEVEL ||
      level > exports.Z_MAX_LEVEL) {
    throw new RangeError('Invalid compression level: ' + level);
  }
  if (strategy != exports.Z_FILTERED &&
      strategy != exports.Z_HUFFMAN_ONLY &&
      strategy != exports.Z_RLE &&
      strategy != exports.Z_FIXED &&
      strategy != exports.Z_DEFAULT_STRATEGY) {
    throw new TypeError('Invalid strategy: ' + strategy);
  }

  if (this._level !== level || this._strategy !== strategy) {
    var self = this;
    this.flush(binding.Z_SYNC_FLUSH, function() {
      self._binding.params(level, strategy);
      if (!self._hadError) {
        self._level = level;
        self._strategy = strategy;
        if (callback) callback();
      }
    });
  } else {
    process.nextTick(callback);
  }
};

Zlib.prototype.reset = function() {
  return this._binding.reset();
};

// This is the _flush function called by the transform class,
// internally, when the last chunk has been written.
Zlib.prototype._flush = function(callback) {
  this._transform(new Buffer(0), '', callback);
};

Zlib.prototype.flush = function(kind, callback) {
  var ws = this._writableState;

  if (typeof kind === 'function' || (kind === void 0 && !callback)) {
    callback = kind;
    kind = binding.Z_FULL_FLUSH;
  }

  if (ws.ended) {
    if (callback)
      process.nextTick(callback);
  } else if (ws.ending) {
    if (callback)
      this.once('end', callback);
  } else if (ws.needDrain) {
    var self = this;
    this.once('drain', function() {
      self.flush(callback);
    });
  } else {
    this._flushFlag = kind;
    this.write(new Buffer(0), '', callback);
  }
};

Zlib.prototype.close = function(callback) {
  if (callback)
    process.nextTick(callback);

  if (this._closed)
    return;

  this._closed = true;

  this._binding.close();

  var self = this;
  process.nextTick(function() {
    self.emit('close');
  });
};

Zlib.prototype._transform = function(chunk, encoding, cb) {
  var flushFlag;
  var ws = this._writableState;
  var ending = ws.ending || ws.ended;
  var last = ending && (!chunk || ws.length === chunk.length);

  if (!chunk === null && !Buffer.isBuffer(chunk))
    return cb(new Error('invalid input'));

  // If it's the last chunk, or a final flush, we use the Z_FINISH flush flag.
  // If it's explicitly flushing at some other time, then we use
  // Z_FULL_FLUSH. Otherwise, use Z_NO_FLUSH for maximum compression
  // goodness.
  if (last)
    flushFlag = binding.Z_FINISH;
  else {
    flushFlag = this._flushFlag;
    // once we've flushed the last of the queue, stop flushing and
    // go back to the normal behavior.
    if (chunk.length >= ws.length) {
      this._flushFlag = this._opts.flush || binding.Z_NO_FLUSH;
    }
  }

  var self = this;
  this._processChunk(chunk, flushFlag, cb);
};

Zlib.prototype._processChunk = function(chunk, flushFlag, cb) {
  var availInBefore = chunk && chunk.length;
  var availOutBefore = this._chunkSize - this._offset;
  var inOff = 0;

  var self = this;

  var async = typeof cb === 'function';

  if (!async) {
    var buffers = [];
    var nread = 0;

    var error;
    this.on('error', function(er) {
      error = er;
    });

    do {
      var res = this._binding.writeSync(flushFlag,
                                        chunk, // in
                                        inOff, // in_off
                                        availInBefore, // in_len
                                        this._buffer, // out
                                        this._offset, //out_off
                                        availOutBefore); // out_len
    } while (!this._hadError && callback(res[0], res[1]));

    if (this._hadError) {
      throw error;
    }

    var buf = Buffer.concat(buffers, nread);
    this.close();

    return buf;
  }

  var req = this._binding.write(flushFlag,
                                chunk, // in
                                inOff, // in_off
                                availInBefore, // in_len
                                this._buffer, // out
                                this._offset, //out_off
                                availOutBefore); // out_len

  req.buffer = chunk;
  req.callback = callback;

  function callback(availInAfter, availOutAfter) {
    if (self._hadError)
      return;

    var have = availOutBefore - availOutAfter;
    assert(have >= 0, 'have should not go down');

    if (have > 0) {
      var out = self._buffer.slice(self._offset, self._offset + have);
      self._offset += have;
      // serve some output to the consumer.
      if (async) {
        self.push(out);
      } else {
        buffers.push(out);
        nread += out.length;
      }
    }

    // exhausted the output buffer, or used all the input create a new one.
    if (availOutAfter === 0 || self._offset >= self._chunkSize) {
      availOutBefore = self._chunkSize;
      self._offset = 0;
      self._buffer = new Buffer(self._chunkSize);
    }

    if (availOutAfter === 0) {
      // Not actually done.  Need to reprocess.
      // Also, update the availInBefore to the availInAfter value,
      // so that if we have to hit it a third (fourth, etc.) time,
      // it'll have the correct byte counts.
      inOff += (availInBefore - availInAfter);
      availInBefore = availInAfter;

      if (!async)
        return true;

      var newReq = self._binding.write(flushFlag,
                                       chunk,
                                       inOff,
                                       availInBefore,
                                       self._buffer,
                                       self._offset,
                                       self._chunkSize);
      newReq.callback = callback; // this same function
      newReq.buffer = chunk;
      return;
    }

    if (!async)
      return false;

    // finished with the chunk.
    cb();
  }
};

util.inherits(Deflate, Zlib);
util.inherits(Inflate, Zlib);
util.inherits(Gzip, Zlib);
util.inherits(Gunzip, Zlib);
util.inherits(DeflateRaw, Zlib);
util.inherits(InflateRaw, Zlib);
util.inherits(Unzip, Zlib);

}).call(this,require('_process'),require("buffer").Buffer)
},{"./binding":175,"_process":381,"_stream_transform":397,"assert":162,"buffer":177,"util":410}],177:[function(require,module,exports){
(function (global){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var isArray = require('isarray')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192 // not used by this implementation

var rootParent = {}

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Due to various browser bugs, sometimes the Object implementation will be used even
 * when the browser supports typed arrays.
 *
 * Note:
 *
 *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
 *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *     incorrect length in some situations.

 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
 * get the Object implementation, which is slower but behaves correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
  ? global.TYPED_ARRAY_SUPPORT
  : typedArraySupport()

function typedArraySupport () {
  try {
    var arr = new Uint8Array(1)
    arr.foo = function () { return 42 }
    return arr.foo() === 42 && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
}

function kMaxLength () {
  return Buffer.TYPED_ARRAY_SUPPORT
    ? 0x7fffffff
    : 0x3fffffff
}

/**
 * Class: Buffer
 * =============
 *
 * The Buffer constructor returns instances of `Uint8Array` that are augmented
 * with function properties for all the node `Buffer` API functions. We use
 * `Uint8Array` so that square bracket notation works as expected -- it returns
 * a single octet.
 *
 * By augmenting the instances, we can avoid modifying the `Uint8Array`
 * prototype.
 */
function Buffer (arg) {
  if (!(this instanceof Buffer)) {
    // Avoid going through an ArgumentsAdaptorTrampoline in the common case.
    if (arguments.length > 1) return new Buffer(arg, arguments[1])
    return new Buffer(arg)
  }

  if (!Buffer.TYPED_ARRAY_SUPPORT) {
    this.length = 0
    this.parent = undefined
  }

  // Common case.
  if (typeof arg === 'number') {
    return fromNumber(this, arg)
  }

  // Slightly less common case.
  if (typeof arg === 'string') {
    return fromString(this, arg, arguments.length > 1 ? arguments[1] : 'utf8')
  }

  // Unusual.
  return fromObject(this, arg)
}

function fromNumber (that, length) {
  that = allocate(that, length < 0 ? 0 : checked(length) | 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < length; i++) {
      that[i] = 0
    }
  }
  return that
}

function fromString (that, string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') encoding = 'utf8'

  // Assumption: byteLength() return value is always < kMaxLength.
  var length = byteLength(string, encoding) | 0
  that = allocate(that, length)

  that.write(string, encoding)
  return that
}

function fromObject (that, object) {
  if (Buffer.isBuffer(object)) return fromBuffer(that, object)

  if (isArray(object)) return fromArray(that, object)

  if (object == null) {
    throw new TypeError('must start with number, buffer, array or string')
  }

  if (typeof ArrayBuffer !== 'undefined') {
    if (object.buffer instanceof ArrayBuffer) {
      return fromTypedArray(that, object)
    }
    if (object instanceof ArrayBuffer) {
      return fromArrayBuffer(that, object)
    }
  }

  if (object.length) return fromArrayLike(that, object)

  return fromJsonObject(that, object)
}

function fromBuffer (that, buffer) {
  var length = checked(buffer.length) | 0
  that = allocate(that, length)
  buffer.copy(that, 0, 0, length)
  return that
}

function fromArray (that, array) {
  var length = checked(array.length) | 0
  that = allocate(that, length)
  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

// Duplicate of fromArray() to keep fromArray() monomorphic.
function fromTypedArray (that, array) {
  var length = checked(array.length) | 0
  that = allocate(that, length)
  // Truncating the elements is probably not what people expect from typed
  // arrays with BYTES_PER_ELEMENT > 1 but it's compatible with the behavior
  // of the old Buffer constructor.
  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

function fromArrayBuffer (that, array) {
  array.byteLength // this throws if `array` is not a valid ArrayBuffer

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = new Uint8Array(array)
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    that = fromTypedArray(that, new Uint8Array(array))
  }
  return that
}

function fromArrayLike (that, array) {
  var length = checked(array.length) | 0
  that = allocate(that, length)
  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

// Deserialize { type: 'Buffer', data: [1,2,3,...] } into a Buffer object.
// Returns a zero-length buffer for inputs that don't conform to the spec.
function fromJsonObject (that, object) {
  var array
  var length = 0

  if (object.type === 'Buffer' && isArray(object.data)) {
    array = object.data
    length = checked(array.length) | 0
  }
  that = allocate(that, length)

  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

if (Buffer.TYPED_ARRAY_SUPPORT) {
  Buffer.prototype.__proto__ = Uint8Array.prototype
  Buffer.__proto__ = Uint8Array
} else {
  // pre-set for values that may exist in the future
  Buffer.prototype.length = undefined
  Buffer.prototype.parent = undefined
}

function allocate (that, length) {
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = new Uint8Array(length)
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    that.length = length
  }

  var fromPool = length !== 0 && length <= Buffer.poolSize >>> 1
  if (fromPool) that.parent = rootParent

  return that
}

function checked (length) {
  // Note: cannot use `length < kMaxLength` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= kMaxLength()) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (subject, encoding) {
  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)

  var buf = new Buffer(subject, encoding)
  delete buf.parent
  return buf
}

Buffer.isBuffer = function isBuffer (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function compare (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError('Arguments must be Buffers')
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  var i = 0
  var len = Math.min(x, y)
  while (i < len) {
    if (a[i] !== b[i]) break

    ++i
  }

  if (i !== len) {
    x = a[i]
    y = b[i]
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'binary':
    case 'base64':
    case 'raw':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')

  if (list.length === 0) {
    return new Buffer(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; i++) {
      length += list[i].length
    }
  }

  var buf = new Buffer(length)
  var pos = 0
  for (i = 0; i < list.length; i++) {
    var item = list[i]
    item.copy(buf, pos)
    pos += item.length
  }
  return buf
}

function byteLength (string, encoding) {
  if (typeof string !== 'string') string = '' + string

  var len = string.length
  if (len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'binary':
      // Deprecated
      case 'raw':
      case 'raws':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) return utf8ToBytes(string).length // assume utf8
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  start = start | 0
  end = end === undefined || end === Infinity ? this.length : end | 0

  if (!encoding) encoding = 'utf8'
  if (start < 0) start = 0
  if (end > this.length) end = this.length
  if (end <= start) return ''

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'binary':
        return binarySlice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// Even though this property is private, it shouldn't be removed because it is
// used by `is-buffer` to detect buffer instances in Safari 5-7.
Buffer.prototype._isBuffer = true

Buffer.prototype.toString = function toString () {
  var length = this.length | 0
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max) str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return 0
  return Buffer.compare(this, b)
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
  byteOffset >>= 0

  if (this.length === 0) return -1
  if (byteOffset >= this.length) return -1

  // Negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)

  if (typeof val === 'string') {
    if (val.length === 0) return -1 // special case: looking for empty string always fails
    return String.prototype.indexOf.call(this, val, byteOffset)
  }
  if (Buffer.isBuffer(val)) {
    return arrayIndexOf(this, val, byteOffset)
  }
  if (typeof val === 'number') {
    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
    }
    return arrayIndexOf(this, [ val ], byteOffset)
  }

  function arrayIndexOf (arr, val, byteOffset) {
    var foundIndex = -1
    for (var i = 0; byteOffset + i < arr.length; i++) {
      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
      } else {
        foundIndex = -1
      }
    }
    return -1
  }

  throw new TypeError('val must be string, number or Buffer')
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new Error('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; i++) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(parsed)) throw new Error('Invalid hex string')
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function binaryWrite (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset | 0
    if (isFinite(length)) {
      length = length | 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  // legacy write(string, encoding, offset, length) - remove in v0.13
  } else {
    var swap = encoding
    encoding = offset
    offset = length | 0
    length = swap
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'binary':
        return binaryWrite(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
      : (firstByte > 0xBF) ? 2
      : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function binarySlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; i++) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    newBuf = this.subarray(start, end)
    newBuf.__proto__ = Buffer.prototype
  } else {
    var sliceLen = end - start
    newBuf = new Buffer(sliceLen, undefined)
    for (var i = 0; i < sliceLen; i++) {
      newBuf[i] = this[i + start]
    }
  }

  if (newBuf.length) newBuf.parent = this.parent || this

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('value is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = (value & 0xff)
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = value < 0 ? 1 : 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = value < 0 ? 1 : 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (value > max || value < min) throw new RangeError('value is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('index out of range')
  if (offset < 0) throw new RangeError('index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start
  var i

  if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (i = len - 1; i >= 0; i--) {
      target[i + targetStart] = this[i + start]
    }
  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    // ascending copy from start
    for (i = 0; i < len; i++) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, start + len),
      targetStart
    )
  }

  return len
}

// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function fill (value, start, end) {
  if (!value) value = 0
  if (!start) start = 0
  if (!end) end = this.length

  if (end < start) throw new RangeError('end < start')

  // Fill 0 bytes; we're done
  if (end === start) return
  if (this.length === 0) return

  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')

  var i
  if (typeof value === 'number') {
    for (i = start; i < end; i++) {
      this[i] = value
    }
  } else {
    var bytes = utf8ToBytes(value.toString())
    var len = bytes.length
    for (i = start; i < end; i++) {
      this[i] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; i++) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; i++) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"base64-js":178,"ieee754":179,"isarray":180}],178:[function(require,module,exports){
;(function (exports) {
  'use strict'

  var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'

  var Arr = (typeof Uint8Array !== 'undefined')
    ? Uint8Array
    : Array

  var PLUS = '+'.charCodeAt(0)
  var SLASH = '/'.charCodeAt(0)
  var NUMBER = '0'.charCodeAt(0)
  var LOWER = 'a'.charCodeAt(0)
  var UPPER = 'A'.charCodeAt(0)
  var PLUS_URL_SAFE = '-'.charCodeAt(0)
  var SLASH_URL_SAFE = '_'.charCodeAt(0)

  function decode (elt) {
    var code = elt.charCodeAt(0)
    if (code === PLUS || code === PLUS_URL_SAFE) return 62 // '+'
    if (code === SLASH || code === SLASH_URL_SAFE) return 63 // '/'
    if (code < NUMBER) return -1 // no match
    if (code < NUMBER + 10) return code - NUMBER + 26 + 26
    if (code < UPPER + 26) return code - UPPER
    if (code < LOWER + 26) return code - LOWER + 26
  }

  function b64ToByteArray (b64) {
    var i, j, l, tmp, placeHolders, arr

    if (b64.length % 4 > 0) {
      throw new Error('Invalid string. Length must be a multiple of 4')
    }

    // the number of equal signs (place holders)
    // if there are two placeholders, than the two characters before it
    // represent one byte
    // if there is only one, then the three characters before it represent 2 bytes
    // this is just a cheap hack to not do indexOf twice
    var len = b64.length
    placeHolders = b64.charAt(len - 2) === '=' ? 2 : b64.charAt(len - 1) === '=' ? 1 : 0

    // base64 is 4/3 + up to two characters of the original data
    arr = new Arr(b64.length * 3 / 4 - placeHolders)

    // if there are placeholders, only get up to the last complete 4 chars
    l = placeHolders > 0 ? b64.length - 4 : b64.length

    var L = 0

    function push (v) {
      arr[L++] = v
    }

    for (i = 0, j = 0; i < l; i += 4, j += 3) {
      tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
      push((tmp & 0xFF0000) >> 16)
      push((tmp & 0xFF00) >> 8)
      push(tmp & 0xFF)
    }

    if (placeHolders === 2) {
      tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
      push(tmp & 0xFF)
    } else if (placeHolders === 1) {
      tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
      push((tmp >> 8) & 0xFF)
      push(tmp & 0xFF)
    }

    return arr
  }

  function uint8ToBase64 (uint8) {
    var i
    var extraBytes = uint8.length % 3 // if we have 1 byte left, pad 2 bytes
    var output = ''
    var temp, length

    function encode (num) {
      return lookup.charAt(num)
    }

    function tripletToBase64 (num) {
      return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
    }

    // go through the array every three bytes, we'll deal with trailing stuff later
    for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
      temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
      output += tripletToBase64(temp)
    }

    // pad the end with zeros, but make sure to not forget the extra bytes
    switch (extraBytes) {
      case 1:
        temp = uint8[uint8.length - 1]
        output += encode(temp >> 2)
        output += encode((temp << 4) & 0x3F)
        output += '=='
        break
      case 2:
        temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
        output += encode(temp >> 10)
        output += encode((temp >> 4) & 0x3F)
        output += encode((temp << 2) & 0x3F)
        output += '='
        break
      default:
        break
    }

    return output
  }

  exports.toByteArray = b64ToByteArray
  exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))

},{}],179:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],180:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],181:[function(require,module,exports){
(function (global){
/*global window, global*/
var util = require("util")
var assert = require("assert")
var now = require("date-now")

var slice = Array.prototype.slice
var console
var times = {}

if (typeof global !== "undefined" && global.console) {
    console = global.console
} else if (typeof window !== "undefined" && window.console) {
    console = window.console
} else {
    console = {}
}

var functions = [
    [log, "log"],
    [info, "info"],
    [warn, "warn"],
    [error, "error"],
    [time, "time"],
    [timeEnd, "timeEnd"],
    [trace, "trace"],
    [dir, "dir"],
    [consoleAssert, "assert"]
]

for (var i = 0; i < functions.length; i++) {
    var tuple = functions[i]
    var f = tuple[0]
    var name = tuple[1]

    if (!console[name]) {
        console[name] = f
    }
}

module.exports = console

function log() {}

function info() {
    console.log.apply(console, arguments)
}

function warn() {
    console.log.apply(console, arguments)
}

function error() {
    console.warn.apply(console, arguments)
}

function time(label) {
    times[label] = now()
}

function timeEnd(label) {
    var time = times[label]
    if (!time) {
        throw new Error("No such label: " + label)
    }

    var duration = now() - time
    console.log(label + ": " + duration + "ms")
}

function trace() {
    var err = new Error()
    err.name = "Trace"
    err.message = util.format.apply(null, arguments)
    console.error(err.stack)
}

function dir(object) {
    console.log(util.inspect(object) + "\n")
}

function consoleAssert(expression) {
    if (!expression) {
        var arr = slice.call(arguments, 1)
        assert.ok(false, util.format.apply(null, arr))
    }
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"assert":162,"date-now":182,"util":410}],182:[function(require,module,exports){
module.exports = now

function now() {
    return new Date().getTime()
}

},{}],183:[function(require,module,exports){
'use strict'

exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes')
exports.createHash = exports.Hash = require('create-hash')
exports.createHmac = exports.Hmac = require('create-hmac')

var hashes = ['sha1', 'sha224', 'sha256', 'sha384', 'sha512', 'md5', 'rmd160'].concat(Object.keys(require('browserify-sign/algos')))
exports.getHashes = function () {
  return hashes
}

var p = require('pbkdf2')
exports.pbkdf2 = p.pbkdf2
exports.pbkdf2Sync = p.pbkdf2Sync

var aes = require('browserify-cipher')
;[
  'Cipher',
  'createCipher',
  'Cipheriv',
  'createCipheriv',
  'Decipher',
  'createDecipher',
  'Decipheriv',
  'createDecipheriv',
  'getCiphers',
  'listCiphers'
].forEach(function (key) {
  exports[key] = aes[key]
})

var dh = require('diffie-hellman')
;[
  'DiffieHellmanGroup',
  'createDiffieHellmanGroup',
  'getDiffieHellman',
  'createDiffieHellman',
  'DiffieHellman'
].forEach(function (key) {
  exports[key] = dh[key]
})

var sign = require('browserify-sign')
;[
  'createSign',
  'Sign',
  'createVerify',
  'Verify'
].forEach(function (key) {
  exports[key] = sign[key]
})

exports.createECDH = require('create-ecdh')

var publicEncrypt = require('public-encrypt')

;[
  'publicEncrypt',
  'privateEncrypt',
  'publicDecrypt',
  'privateDecrypt'
].forEach(function (key) {
  exports[key] = publicEncrypt[key]
})

// the least I can do is make error messages for the rest of the node.js/crypto api.
;[
  'createCredentials'
].forEach(function (name) {
  exports[name] = function () {
    throw new Error([
      'sorry, ' + name + ' is not implemented yet',
      'we accept pull requests',
      'https://github.com/crypto-browserify/crypto-browserify'
    ].join('\n'))
  }
})

},{"browserify-cipher":184,"browserify-sign":214,"browserify-sign/algos":213,"create-ecdh":281,"create-hash":307,"create-hmac":320,"diffie-hellman":321,"pbkdf2":328,"public-encrypt":329,"randombytes":374}],184:[function(require,module,exports){
var ebtk = require('evp_bytestokey')
var aes = require('browserify-aes/browser')
var DES = require('browserify-des')
var desModes = require('browserify-des/modes')
var aesModes = require('browserify-aes/modes')
function createCipher (suite, password) {
  var keyLen, ivLen
  suite = suite.toLowerCase()
  if (aesModes[suite]) {
    keyLen = aesModes[suite].key
    ivLen = aesModes[suite].iv
  } else if (desModes[suite]) {
    keyLen = desModes[suite].key * 8
    ivLen = desModes[suite].iv
  } else {
    throw new TypeError('invalid suite type')
  }
  var keys = ebtk(password, false, keyLen, ivLen)
  return createCipheriv(suite, keys.key, keys.iv)
}
function createDecipher (suite, password) {
  var keyLen, ivLen
  suite = suite.toLowerCase()
  if (aesModes[suite]) {
    keyLen = aesModes[suite].key
    ivLen = aesModes[suite].iv
  } else if (desModes[suite]) {
    keyLen = desModes[suite].key * 8
    ivLen = desModes[suite].iv
  } else {
    throw new TypeError('invalid suite type')
  }
  var keys = ebtk(password, false, keyLen, ivLen)
  return createDecipheriv(suite, keys.key, keys.iv)
}

function createCipheriv (suite, key, iv) {
  suite = suite.toLowerCase()
  if (aesModes[suite]) {
    return aes.createCipheriv(suite, key, iv)
  } else if (desModes[suite]) {
    return new DES({
      key: key,
      iv: iv,
      mode: suite
    })
  } else {
    throw new TypeError('invalid suite type')
  }
}
function createDecipheriv (suite, key, iv) {
  suite = suite.toLowerCase()
  if (aesModes[suite]) {
    return aes.createDecipheriv(suite, key, iv)
  } else if (desModes[suite]) {
    return new DES({
      key: key,
      iv: iv,
      mode: suite,
      decrypt: true
    })
  } else {
    throw new TypeError('invalid suite type')
  }
}
exports.createCipher = exports.Cipher = createCipher
exports.createCipheriv = exports.Cipheriv = createCipheriv
exports.createDecipher = exports.Decipher = createDecipher
exports.createDecipheriv = exports.Decipheriv = createDecipheriv
function getCiphers () {
  return Object.keys(desModes).concat(aes.getCiphers())
}
exports.listCiphers = exports.getCiphers = getCiphers

},{"browserify-aes/browser":187,"browserify-aes/modes":191,"browserify-des":202,"browserify-des/modes":203,"evp_bytestokey":212}],185:[function(require,module,exports){
(function (Buffer){
// based on the aes implimentation in triple sec
// https://github.com/keybase/triplesec

// which is in turn based on the one from crypto-js
// https://code.google.com/p/crypto-js/

var uint_max = Math.pow(2, 32)
function fixup_uint32 (x) {
  var ret, x_pos
  ret = x > uint_max || x < 0 ? (x_pos = Math.abs(x) % uint_max, x < 0 ? uint_max - x_pos : x_pos) : x
  return ret
}
function scrub_vec (v) {
  for (var i = 0; i < v.length; v++) {
    v[i] = 0
  }
  return false
}

function Global () {
  this.SBOX = []
  this.INV_SBOX = []
  this.SUB_MIX = [[], [], [], []]
  this.INV_SUB_MIX = [[], [], [], []]
  this.init()
  this.RCON = [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36]
}

Global.prototype.init = function () {
  var d, i, sx, t, x, x2, x4, x8, xi, _i
  d = (function () {
    var _i, _results
    _results = []
    for (i = _i = 0; _i < 256; i = ++_i) {
      if (i < 128) {
        _results.push(i << 1)
      } else {
        _results.push((i << 1) ^ 0x11b)
      }
    }
    return _results
  })()
  x = 0
  xi = 0
  for (i = _i = 0; _i < 256; i = ++_i) {
    sx = xi ^ (xi << 1) ^ (xi << 2) ^ (xi << 3) ^ (xi << 4)
    sx = (sx >>> 8) ^ (sx & 0xff) ^ 0x63
    this.SBOX[x] = sx
    this.INV_SBOX[sx] = x
    x2 = d[x]
    x4 = d[x2]
    x8 = d[x4]
    t = (d[sx] * 0x101) ^ (sx * 0x1010100)
    this.SUB_MIX[0][x] = (t << 24) | (t >>> 8)
    this.SUB_MIX[1][x] = (t << 16) | (t >>> 16)
    this.SUB_MIX[2][x] = (t << 8) | (t >>> 24)
    this.SUB_MIX[3][x] = t
    t = (x8 * 0x1010101) ^ (x4 * 0x10001) ^ (x2 * 0x101) ^ (x * 0x1010100)
    this.INV_SUB_MIX[0][sx] = (t << 24) | (t >>> 8)
    this.INV_SUB_MIX[1][sx] = (t << 16) | (t >>> 16)
    this.INV_SUB_MIX[2][sx] = (t << 8) | (t >>> 24)
    this.INV_SUB_MIX[3][sx] = t
    if (x === 0) {
      x = xi = 1
    } else {
      x = x2 ^ d[d[d[x8 ^ x2]]]
      xi ^= d[d[xi]]
    }
  }
  return true
}

var G = new Global()

AES.blockSize = 4 * 4

AES.prototype.blockSize = AES.blockSize

AES.keySize = 256 / 8

AES.prototype.keySize = AES.keySize

function bufferToArray (buf) {
  var len = buf.length / 4
  var out = new Array(len)
  var i = -1
  while (++i < len) {
    out[i] = buf.readUInt32BE(i * 4)
  }
  return out
}
function AES (key) {
  this._key = bufferToArray(key)
  this._doReset()
}

AES.prototype._doReset = function () {
  var invKsRow, keySize, keyWords, ksRow, ksRows, t
  keyWords = this._key
  keySize = keyWords.length
  this._nRounds = keySize + 6
  ksRows = (this._nRounds + 1) * 4
  this._keySchedule = []
  for (ksRow = 0; ksRow < ksRows; ksRow++) {
    this._keySchedule[ksRow] = ksRow < keySize ? keyWords[ksRow] : (t = this._keySchedule[ksRow - 1], (ksRow % keySize) === 0 ? (t = (t << 8) | (t >>> 24), t = (G.SBOX[t >>> 24] << 24) | (G.SBOX[(t >>> 16) & 0xff] << 16) | (G.SBOX[(t >>> 8) & 0xff] << 8) | G.SBOX[t & 0xff], t ^= G.RCON[(ksRow / keySize) | 0] << 24) : keySize > 6 && ksRow % keySize === 4 ? t = (G.SBOX[t >>> 24] << 24) | (G.SBOX[(t >>> 16) & 0xff] << 16) | (G.SBOX[(t >>> 8) & 0xff] << 8) | G.SBOX[t & 0xff] : void 0, this._keySchedule[ksRow - keySize] ^ t)
  }
  this._invKeySchedule = []
  for (invKsRow = 0; invKsRow < ksRows; invKsRow++) {
    ksRow = ksRows - invKsRow
    t = this._keySchedule[ksRow - (invKsRow % 4 ? 0 : 4)]
    this._invKeySchedule[invKsRow] = invKsRow < 4 || ksRow <= 4 ? t : G.INV_SUB_MIX[0][G.SBOX[t >>> 24]] ^ G.INV_SUB_MIX[1][G.SBOX[(t >>> 16) & 0xff]] ^ G.INV_SUB_MIX[2][G.SBOX[(t >>> 8) & 0xff]] ^ G.INV_SUB_MIX[3][G.SBOX[t & 0xff]]
  }
  return true
}

AES.prototype.encryptBlock = function (M) {
  M = bufferToArray(new Buffer(M))
  var out = this._doCryptBlock(M, this._keySchedule, G.SUB_MIX, G.SBOX)
  var buf = new Buffer(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[1], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[3], 12)
  return buf
}

AES.prototype.decryptBlock = function (M) {
  M = bufferToArray(new Buffer(M))
  var temp = [M[3], M[1]]
  M[1] = temp[0]
  M[3] = temp[1]
  var out = this._doCryptBlock(M, this._invKeySchedule, G.INV_SUB_MIX, G.INV_SBOX)
  var buf = new Buffer(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[3], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[1], 12)
  return buf
}

AES.prototype.scrub = function () {
  scrub_vec(this._keySchedule)
  scrub_vec(this._invKeySchedule)
  scrub_vec(this._key)
}

AES.prototype._doCryptBlock = function (M, keySchedule, SUB_MIX, SBOX) {
  var ksRow, s0, s1, s2, s3, t0, t1, t2, t3

  s0 = M[0] ^ keySchedule[0]
  s1 = M[1] ^ keySchedule[1]
  s2 = M[2] ^ keySchedule[2]
  s3 = M[3] ^ keySchedule[3]
  ksRow = 4
  for (var round = 1; round < this._nRounds; round++) {
    t0 = SUB_MIX[0][s0 >>> 24] ^ SUB_MIX[1][(s1 >>> 16) & 0xff] ^ SUB_MIX[2][(s2 >>> 8) & 0xff] ^ SUB_MIX[3][s3 & 0xff] ^ keySchedule[ksRow++]
    t1 = SUB_MIX[0][s1 >>> 24] ^ SUB_MIX[1][(s2 >>> 16) & 0xff] ^ SUB_MIX[2][(s3 >>> 8) & 0xff] ^ SUB_MIX[3][s0 & 0xff] ^ keySchedule[ksRow++]
    t2 = SUB_MIX[0][s2 >>> 24] ^ SUB_MIX[1][(s3 >>> 16) & 0xff] ^ SUB_MIX[2][(s0 >>> 8) & 0xff] ^ SUB_MIX[3][s1 & 0xff] ^ keySchedule[ksRow++]
    t3 = SUB_MIX[0][s3 >>> 24] ^ SUB_MIX[1][(s0 >>> 16) & 0xff] ^ SUB_MIX[2][(s1 >>> 8) & 0xff] ^ SUB_MIX[3][s2 & 0xff] ^ keySchedule[ksRow++]
    s0 = t0
    s1 = t1
    s2 = t2
    s3 = t3
  }
  t0 = ((SBOX[s0 >>> 24] << 24) | (SBOX[(s1 >>> 16) & 0xff] << 16) | (SBOX[(s2 >>> 8) & 0xff] << 8) | SBOX[s3 & 0xff]) ^ keySchedule[ksRow++]
  t1 = ((SBOX[s1 >>> 24] << 24) | (SBOX[(s2 >>> 16) & 0xff] << 16) | (SBOX[(s3 >>> 8) & 0xff] << 8) | SBOX[s0 & 0xff]) ^ keySchedule[ksRow++]
  t2 = ((SBOX[s2 >>> 24] << 24) | (SBOX[(s3 >>> 16) & 0xff] << 16) | (SBOX[(s0 >>> 8) & 0xff] << 8) | SBOX[s1 & 0xff]) ^ keySchedule[ksRow++]
  t3 = ((SBOX[s3 >>> 24] << 24) | (SBOX[(s0 >>> 16) & 0xff] << 16) | (SBOX[(s1 >>> 8) & 0xff] << 8) | SBOX[s2 & 0xff]) ^ keySchedule[ksRow++]
  return [
    fixup_uint32(t0),
    fixup_uint32(t1),
    fixup_uint32(t2),
    fixup_uint32(t3)
  ]
}

exports.AES = AES

}).call(this,require("buffer").Buffer)
},{"buffer":177}],186:[function(require,module,exports){
(function (Buffer){
var aes = require('./aes')
var Transform = require('cipher-base')
var inherits = require('inherits')
var GHASH = require('./ghash')
var xor = require('buffer-xor')
inherits(StreamCipher, Transform)
module.exports = StreamCipher

function StreamCipher (mode, key, iv, decrypt) {
  if (!(this instanceof StreamCipher)) {
    return new StreamCipher(mode, key, iv)
  }
  Transform.call(this)
  this._finID = Buffer.concat([iv, new Buffer([0, 0, 0, 1])])
  iv = Buffer.concat([iv, new Buffer([0, 0, 0, 2])])
  this._cipher = new aes.AES(key)
  this._prev = new Buffer(iv.length)
  this._cache = new Buffer('')
  this._secCache = new Buffer('')
  this._decrypt = decrypt
  this._alen = 0
  this._len = 0
  iv.copy(this._prev)
  this._mode = mode
  var h = new Buffer(4)
  h.fill(0)
  this._ghash = new GHASH(this._cipher.encryptBlock(h))
  this._authTag = null
  this._called = false
}
StreamCipher.prototype._update = function (chunk) {
  if (!this._called && this._alen) {
    var rump = 16 - (this._alen % 16)
    if (rump < 16) {
      rump = new Buffer(rump)
      rump.fill(0)
      this._ghash.update(rump)
    }
  }
  this._called = true
  var out = this._mode.encrypt(this, chunk)
  if (this._decrypt) {
    this._ghash.update(chunk)
  } else {
    this._ghash.update(out)
  }
  this._len += chunk.length
  return out
}
StreamCipher.prototype._final = function () {
  if (this._decrypt && !this._authTag) {
    throw new Error('Unsupported state or unable to authenticate data')
  }
  var tag = xor(this._ghash.final(this._alen * 8, this._len * 8), this._cipher.encryptBlock(this._finID))
  if (this._decrypt) {
    if (xorTest(tag, this._authTag)) {
      throw new Error('Unsupported state or unable to authenticate data')
    }
  } else {
    this._authTag = tag
  }
  this._cipher.scrub()
}
StreamCipher.prototype.getAuthTag = function getAuthTag () {
  if (!this._decrypt && Buffer.isBuffer(this._authTag)) {
    return this._authTag
  } else {
    throw new Error('Attempting to get auth tag in unsupported state')
  }
}
StreamCipher.prototype.setAuthTag = function setAuthTag (tag) {
  if (this._decrypt) {
    this._authTag = tag
  } else {
    throw new Error('Attempting to set auth tag in unsupported state')
  }
}
StreamCipher.prototype.setAAD = function setAAD (buf) {
  if (!this._called) {
    this._ghash.update(buf)
    this._alen += buf.length
  } else {
    throw new Error('Attempting to set AAD in unsupported state')
  }
}
function xorTest (a, b) {
  var out = 0
  if (a.length !== b.length) {
    out++
  }
  var len = Math.min(a.length, b.length)
  var i = -1
  while (++i < len) {
    out += (a[i] ^ b[i])
  }
  return out
}

}).call(this,require("buffer").Buffer)
},{"./aes":185,"./ghash":190,"buffer":177,"buffer-xor":199,"cipher-base":200,"inherits":377}],187:[function(require,module,exports){
var ciphers = require('./encrypter')
exports.createCipher = exports.Cipher = ciphers.createCipher
exports.createCipheriv = exports.Cipheriv = ciphers.createCipheriv
var deciphers = require('./decrypter')
exports.createDecipher = exports.Decipher = deciphers.createDecipher
exports.createDecipheriv = exports.Decipheriv = deciphers.createDecipheriv
var modes = require('./modes')
function getCiphers () {
  return Object.keys(modes)
}
exports.listCiphers = exports.getCiphers = getCiphers

},{"./decrypter":188,"./encrypter":189,"./modes":191}],188:[function(require,module,exports){
(function (Buffer){
var aes = require('./aes')
var Transform = require('cipher-base')
var inherits = require('inherits')
var modes = require('./modes')
var StreamCipher = require('./streamCipher')
var AuthCipher = require('./authCipher')
var ebtk = require('evp_bytestokey')

inherits(Decipher, Transform)
function Decipher (mode, key, iv) {
  if (!(this instanceof Decipher)) {
    return new Decipher(mode, key, iv)
  }
  Transform.call(this)
  this._cache = new Splitter()
  this._last = void 0
  this._cipher = new aes.AES(key)
  this._prev = new Buffer(iv.length)
  iv.copy(this._prev)
  this._mode = mode
  this._autopadding = true
}
Decipher.prototype._update = function (data) {
  this._cache.add(data)
  var chunk
  var thing
  var out = []
  while ((chunk = this._cache.get(this._autopadding))) {
    thing = this._mode.decrypt(this, chunk)
    out.push(thing)
  }
  return Buffer.concat(out)
}
Decipher.prototype._final = function () {
  var chunk = this._cache.flush()
  if (this._autopadding) {
    return unpad(this._mode.decrypt(this, chunk))
  } else if (chunk) {
    throw new Error('data not multiple of block length')
  }
}
Decipher.prototype.setAutoPadding = function (setTo) {
  this._autopadding = !!setTo
  return this
}
function Splitter () {
  if (!(this instanceof Splitter)) {
    return new Splitter()
  }
  this.cache = new Buffer('')
}
Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data])
}

Splitter.prototype.get = function (autoPadding) {
  var out
  if (autoPadding) {
    if (this.cache.length > 16) {
      out = this.cache.slice(0, 16)
      this.cache = this.cache.slice(16)
      return out
    }
  } else {
    if (this.cache.length >= 16) {
      out = this.cache.slice(0, 16)
      this.cache = this.cache.slice(16)
      return out
    }
  }
  return null
}
Splitter.prototype.flush = function () {
  if (this.cache.length) {
    return this.cache
  }
}
function unpad (last) {
  var padded = last[15]
  var i = -1
  while (++i < padded) {
    if (last[(i + (16 - padded))] !== padded) {
      throw new Error('unable to decrypt data')
    }
  }
  if (padded === 16) {
    return
  }
  return last.slice(0, 16 - padded)
}

var modelist = {
  ECB: require('./modes/ecb'),
  CBC: require('./modes/cbc'),
  CFB: require('./modes/cfb'),
  CFB8: require('./modes/cfb8'),
  CFB1: require('./modes/cfb1'),
  OFB: require('./modes/ofb'),
  CTR: require('./modes/ctr'),
  GCM: require('./modes/ctr')
}

function createDecipheriv (suite, password, iv) {
  var config = modes[suite.toLowerCase()]
  if (!config) {
    throw new TypeError('invalid suite type')
  }
  if (typeof iv === 'string') {
    iv = new Buffer(iv)
  }
  if (typeof password === 'string') {
    password = new Buffer(password)
  }
  if (password.length !== config.key / 8) {
    throw new TypeError('invalid key length ' + password.length)
  }
  if (iv.length !== config.iv) {
    throw new TypeError('invalid iv length ' + iv.length)
  }
  if (config.type === 'stream') {
    return new StreamCipher(modelist[config.mode], password, iv, true)
  } else if (config.type === 'auth') {
    return new AuthCipher(modelist[config.mode], password, iv, true)
  }
  return new Decipher(modelist[config.mode], password, iv)
}

function createDecipher (suite, password) {
  var config = modes[suite.toLowerCase()]
  if (!config) {
    throw new TypeError('invalid suite type')
  }
  var keys = ebtk(password, false, config.key, config.iv)
  return createDecipheriv(suite, keys.key, keys.iv)
}
exports.createDecipher = createDecipher
exports.createDecipheriv = createDecipheriv

}).call(this,require("buffer").Buffer)
},{"./aes":185,"./authCipher":186,"./modes":191,"./modes/cbc":192,"./modes/cfb":193,"./modes/cfb1":194,"./modes/cfb8":195,"./modes/ctr":196,"./modes/ecb":197,"./modes/ofb":198,"./streamCipher":201,"buffer":177,"cipher-base":200,"evp_bytestokey":212,"inherits":377}],189:[function(require,module,exports){
(function (Buffer){
var aes = require('./aes')
var Transform = require('cipher-base')
var inherits = require('inherits')
var modes = require('./modes')
var ebtk = require('evp_bytestokey')
var StreamCipher = require('./streamCipher')
var AuthCipher = require('./authCipher')
inherits(Cipher, Transform)
function Cipher (mode, key, iv) {
  if (!(this instanceof Cipher)) {
    return new Cipher(mode, key, iv)
  }
  Transform.call(this)
  this._cache = new Splitter()
  this._cipher = new aes.AES(key)
  this._prev = new Buffer(iv.length)
  iv.copy(this._prev)
  this._mode = mode
  this._autopadding = true
}
Cipher.prototype._update = function (data) {
  this._cache.add(data)
  var chunk
  var thing
  var out = []
  while ((chunk = this._cache.get())) {
    thing = this._mode.encrypt(this, chunk)
    out.push(thing)
  }
  return Buffer.concat(out)
}
Cipher.prototype._final = function () {
  var chunk = this._cache.flush()
  if (this._autopadding) {
    chunk = this._mode.encrypt(this, chunk)
    this._cipher.scrub()
    return chunk
  } else if (chunk.toString('hex') !== '10101010101010101010101010101010') {
    this._cipher.scrub()
    throw new Error('data not multiple of block length')
  }
}
Cipher.prototype.setAutoPadding = function (setTo) {
  this._autopadding = !!setTo
  return this
}

function Splitter () {
  if (!(this instanceof Splitter)) {
    return new Splitter()
  }
  this.cache = new Buffer('')
}
Splitter.prototype.add = function (data) {
  this.cache = Buffer.concat([this.cache, data])
}

Splitter.prototype.get = function () {
  if (this.cache.length > 15) {
    var out = this.cache.slice(0, 16)
    this.cache = this.cache.slice(16)
    return out
  }
  return null
}
Splitter.prototype.flush = function () {
  var len = 16 - this.cache.length
  var padBuff = new Buffer(len)

  var i = -1
  while (++i < len) {
    padBuff.writeUInt8(len, i)
  }
  var out = Buffer.concat([this.cache, padBuff])
  return out
}
var modelist = {
  ECB: require('./modes/ecb'),
  CBC: require('./modes/cbc'),
  CFB: require('./modes/cfb'),
  CFB8: require('./modes/cfb8'),
  CFB1: require('./modes/cfb1'),
  OFB: require('./modes/ofb'),
  CTR: require('./modes/ctr'),
  GCM: require('./modes/ctr')
}

function createCipheriv (suite, password, iv) {
  var config = modes[suite.toLowerCase()]
  if (!config) {
    throw new TypeError('invalid suite type')
  }
  if (typeof iv === 'string') {
    iv = new Buffer(iv)
  }
  if (typeof password === 'string') {
    password = new Buffer(password)
  }
  if (password.length !== config.key / 8) {
    throw new TypeError('invalid key length ' + password.length)
  }
  if (iv.length !== config.iv) {
    throw new TypeError('invalid iv length ' + iv.length)
  }
  if (config.type === 'stream') {
    return new StreamCipher(modelist[config.mode], password, iv)
  } else if (config.type === 'auth') {
    return new AuthCipher(modelist[config.mode], password, iv)
  }
  return new Cipher(modelist[config.mode], password, iv)
}
function createCipher (suite, password) {
  var config = modes[suite.toLowerCase()]
  if (!config) {
    throw new TypeError('invalid suite type')
  }
  var keys = ebtk(password, false, config.key, config.iv)
  return createCipheriv(suite, keys.key, keys.iv)
}

exports.createCipheriv = createCipheriv
exports.createCipher = createCipher

}).call(this,require("buffer").Buffer)
},{"./aes":185,"./authCipher":186,"./modes":191,"./modes/cbc":192,"./modes/cfb":193,"./modes/cfb1":194,"./modes/cfb8":195,"./modes/ctr":196,"./modes/ecb":197,"./modes/ofb":198,"./streamCipher":201,"buffer":177,"cipher-base":200,"evp_bytestokey":212,"inherits":377}],190:[function(require,module,exports){
(function (Buffer){
var zeros = new Buffer(16)
zeros.fill(0)
module.exports = GHASH
function GHASH (key) {
  this.h = key
  this.state = new Buffer(16)
  this.state.fill(0)
  this.cache = new Buffer('')
}
// from http://bitwiseshiftleft.github.io/sjcl/doc/symbols/src/core_gcm.js.html
// by Juho Vähä-Herttua
GHASH.prototype.ghash = function (block) {
  var i = -1
  while (++i < block.length) {
    this.state[i] ^= block[i]
  }
  this._multiply()
}

GHASH.prototype._multiply = function () {
  var Vi = toArray(this.h)
  var Zi = [0, 0, 0, 0]
  var j, xi, lsb_Vi
  var i = -1
  while (++i < 128) {
    xi = (this.state[~~(i / 8)] & (1 << (7 - i % 8))) !== 0
    if (xi) {
      // Z_i+1 = Z_i ^ V_i
      Zi = xor(Zi, Vi)
    }

    // Store the value of LSB(V_i)
    lsb_Vi = (Vi[3] & 1) !== 0

    // V_i+1 = V_i >> 1
    for (j = 3; j > 0; j--) {
      Vi[j] = (Vi[j] >>> 1) | ((Vi[j - 1] & 1) << 31)
    }
    Vi[0] = Vi[0] >>> 1

    // If LSB(V_i) is 1, V_i+1 = (V_i >> 1) ^ R
    if (lsb_Vi) {
      Vi[0] = Vi[0] ^ (0xe1 << 24)
    }
  }
  this.state = fromArray(Zi)
}
GHASH.prototype.update = function (buf) {
  this.cache = Buffer.concat([this.cache, buf])
  var chunk
  while (this.cache.length >= 16) {
    chunk = this.cache.slice(0, 16)
    this.cache = this.cache.slice(16)
    this.ghash(chunk)
  }
}
GHASH.prototype.final = function (abl, bl) {
  if (this.cache.length) {
    this.ghash(Buffer.concat([this.cache, zeros], 16))
  }
  this.ghash(fromArray([
    0, abl,
    0, bl
  ]))
  return this.state
}

function toArray (buf) {
  return [
    buf.readUInt32BE(0),
    buf.readUInt32BE(4),
    buf.readUInt32BE(8),
    buf.readUInt32BE(12)
  ]
}
function fromArray (out) {
  out = out.map(fixup_uint32)
  var buf = new Buffer(16)
  buf.writeUInt32BE(out[0], 0)
  buf.writeUInt32BE(out[1], 4)
  buf.writeUInt32BE(out[2], 8)
  buf.writeUInt32BE(out[3], 12)
  return buf
}
var uint_max = Math.pow(2, 32)
function fixup_uint32 (x) {
  var ret, x_pos
  ret = x > uint_max || x < 0 ? (x_pos = Math.abs(x) % uint_max, x < 0 ? uint_max - x_pos : x_pos) : x
  return ret
}
function xor (a, b) {
  return [
    a[0] ^ b[0],
    a[1] ^ b[1],
    a[2] ^ b[2],
    a[3] ^ b[3]
  ]
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],191:[function(require,module,exports){
exports['aes-128-ecb'] = {
  cipher: 'AES',
  key: 128,
  iv: 0,
  mode: 'ECB',
  type: 'block'
}
exports['aes-192-ecb'] = {
  cipher: 'AES',
  key: 192,
  iv: 0,
  mode: 'ECB',
  type: 'block'
}
exports['aes-256-ecb'] = {
  cipher: 'AES',
  key: 256,
  iv: 0,
  mode: 'ECB',
  type: 'block'
}
exports['aes-128-cbc'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CBC',
  type: 'block'
}
exports['aes-192-cbc'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CBC',
  type: 'block'
}
exports['aes-256-cbc'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CBC',
  type: 'block'
}
exports['aes128'] = exports['aes-128-cbc']
exports['aes192'] = exports['aes-192-cbc']
exports['aes256'] = exports['aes-256-cbc']
exports['aes-128-cfb'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CFB',
  type: 'stream'
}
exports['aes-192-cfb'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CFB',
  type: 'stream'
}
exports['aes-256-cfb'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CFB',
  type: 'stream'
}
exports['aes-128-cfb8'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CFB8',
  type: 'stream'
}
exports['aes-192-cfb8'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CFB8',
  type: 'stream'
}
exports['aes-256-cfb8'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CFB8',
  type: 'stream'
}
exports['aes-128-cfb1'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CFB1',
  type: 'stream'
}
exports['aes-192-cfb1'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CFB1',
  type: 'stream'
}
exports['aes-256-cfb1'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CFB1',
  type: 'stream'
}
exports['aes-128-ofb'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'OFB',
  type: 'stream'
}
exports['aes-192-ofb'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'OFB',
  type: 'stream'
}
exports['aes-256-ofb'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'OFB',
  type: 'stream'
}
exports['aes-128-ctr'] = {
  cipher: 'AES',
  key: 128,
  iv: 16,
  mode: 'CTR',
  type: 'stream'
}
exports['aes-192-ctr'] = {
  cipher: 'AES',
  key: 192,
  iv: 16,
  mode: 'CTR',
  type: 'stream'
}
exports['aes-256-ctr'] = {
  cipher: 'AES',
  key: 256,
  iv: 16,
  mode: 'CTR',
  type: 'stream'
}
exports['aes-128-gcm'] = {
  cipher: 'AES',
  key: 128,
  iv: 12,
  mode: 'GCM',
  type: 'auth'
}
exports['aes-192-gcm'] = {
  cipher: 'AES',
  key: 192,
  iv: 12,
  mode: 'GCM',
  type: 'auth'
}
exports['aes-256-gcm'] = {
  cipher: 'AES',
  key: 256,
  iv: 12,
  mode: 'GCM',
  type: 'auth'
}

},{}],192:[function(require,module,exports){
var xor = require('buffer-xor')

exports.encrypt = function (self, block) {
  var data = xor(block, self._prev)

  self._prev = self._cipher.encryptBlock(data)
  return self._prev
}

exports.decrypt = function (self, block) {
  var pad = self._prev

  self._prev = block
  var out = self._cipher.decryptBlock(block)

  return xor(out, pad)
}

},{"buffer-xor":199}],193:[function(require,module,exports){
(function (Buffer){
var xor = require('buffer-xor')

exports.encrypt = function (self, data, decrypt) {
  var out = new Buffer('')
  var len

  while (data.length) {
    if (self._cache.length === 0) {
      self._cache = self._cipher.encryptBlock(self._prev)
      self._prev = new Buffer('')
    }

    if (self._cache.length <= data.length) {
      len = self._cache.length
      out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)])
      data = data.slice(len)
    } else {
      out = Buffer.concat([out, encryptStart(self, data, decrypt)])
      break
    }
  }

  return out
}
function encryptStart (self, data, decrypt) {
  var len = data.length
  var out = xor(data, self._cache)
  self._cache = self._cache.slice(len)
  self._prev = Buffer.concat([self._prev, decrypt ? data : out])
  return out
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"buffer-xor":199}],194:[function(require,module,exports){
(function (Buffer){
function encryptByte (self, byteParam, decrypt) {
  var pad
  var i = -1
  var len = 8
  var out = 0
  var bit, value
  while (++i < len) {
    pad = self._cipher.encryptBlock(self._prev)
    bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0
    value = pad[0] ^ bit
    out += ((value & 0x80) >> (i % 8))
    self._prev = shiftIn(self._prev, decrypt ? bit : value)
  }
  return out
}
exports.encrypt = function (self, chunk, decrypt) {
  var len = chunk.length
  var out = new Buffer(len)
  var i = -1
  while (++i < len) {
    out[i] = encryptByte(self, chunk[i], decrypt)
  }
  return out
}
function shiftIn (buffer, value) {
  var len = buffer.length
  var i = -1
  var out = new Buffer(buffer.length)
  buffer = Buffer.concat([buffer, new Buffer([value])])
  while (++i < len) {
    out[i] = buffer[i] << 1 | buffer[i + 1] >> (7)
  }
  return out
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],195:[function(require,module,exports){
(function (Buffer){
function encryptByte (self, byteParam, decrypt) {
  var pad = self._cipher.encryptBlock(self._prev)
  var out = pad[0] ^ byteParam
  self._prev = Buffer.concat([self._prev.slice(1), new Buffer([decrypt ? byteParam : out])])
  return out
}
exports.encrypt = function (self, chunk, decrypt) {
  var len = chunk.length
  var out = new Buffer(len)
  var i = -1
  while (++i < len) {
    out[i] = encryptByte(self, chunk[i], decrypt)
  }
  return out
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],196:[function(require,module,exports){
(function (Buffer){
var xor = require('buffer-xor')

function incr32 (iv) {
  var len = iv.length
  var item
  while (len--) {
    item = iv.readUInt8(len)
    if (item === 255) {
      iv.writeUInt8(0, len)
    } else {
      item++
      iv.writeUInt8(item, len)
      break
    }
  }
}

function getBlock (self) {
  var out = self._cipher.encryptBlock(self._prev)
  incr32(self._prev)
  return out
}

exports.encrypt = function (self, chunk) {
  while (self._cache.length < chunk.length) {
    self._cache = Buffer.concat([self._cache, getBlock(self)])
  }
  var pad = self._cache.slice(0, chunk.length)
  self._cache = self._cache.slice(chunk.length)
  return xor(chunk, pad)
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"buffer-xor":199}],197:[function(require,module,exports){
exports.encrypt = function (self, block) {
  return self._cipher.encryptBlock(block)
}
exports.decrypt = function (self, block) {
  return self._cipher.decryptBlock(block)
}

},{}],198:[function(require,module,exports){
(function (Buffer){
var xor = require('buffer-xor')

function getBlock (self) {
  self._prev = self._cipher.encryptBlock(self._prev)
  return self._prev
}

exports.encrypt = function (self, chunk) {
  while (self._cache.length < chunk.length) {
    self._cache = Buffer.concat([self._cache, getBlock(self)])
  }

  var pad = self._cache.slice(0, chunk.length)
  self._cache = self._cache.slice(chunk.length)
  return xor(chunk, pad)
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"buffer-xor":199}],199:[function(require,module,exports){
(function (Buffer){
module.exports = function xor (a, b) {
  var length = Math.min(a.length, b.length)
  var buffer = new Buffer(length)

  for (var i = 0; i < length; ++i) {
    buffer[i] = a[i] ^ b[i]
  }

  return buffer
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],200:[function(require,module,exports){
arguments[4][17][0].apply(exports,arguments)
},{"buffer":177,"dup":17,"inherits":377,"stream":399,"string_decoder":406}],201:[function(require,module,exports){
(function (Buffer){
var aes = require('./aes')
var Transform = require('cipher-base')
var inherits = require('inherits')

inherits(StreamCipher, Transform)
module.exports = StreamCipher
function StreamCipher (mode, key, iv, decrypt) {
  if (!(this instanceof StreamCipher)) {
    return new StreamCipher(mode, key, iv)
  }
  Transform.call(this)
  this._cipher = new aes.AES(key)
  this._prev = new Buffer(iv.length)
  this._cache = new Buffer('')
  this._secCache = new Buffer('')
  this._decrypt = decrypt
  iv.copy(this._prev)
  this._mode = mode
}
StreamCipher.prototype._update = function (chunk) {
  return this._mode.encrypt(this, chunk, this._decrypt)
}
StreamCipher.prototype._final = function () {
  this._cipher.scrub()
}

}).call(this,require("buffer").Buffer)
},{"./aes":185,"buffer":177,"cipher-base":200,"inherits":377}],202:[function(require,module,exports){
(function (Buffer){
var CipherBase = require('cipher-base')
var des = require('des.js')
var inherits = require('inherits')

var modes = {
  'des-ede3-cbc': des.CBC.instantiate(des.EDE),
  'des-ede3': des.EDE,
  'des-ede-cbc': des.CBC.instantiate(des.EDE),
  'des-ede': des.EDE,
  'des-cbc': des.CBC.instantiate(des.DES),
  'des-ecb': des.DES
}
modes.des = modes['des-cbc']
modes.des3 = modes['des-ede3-cbc']
module.exports = DES
inherits(DES, CipherBase)
function DES (opts) {
  CipherBase.call(this)
  var modeName = opts.mode.toLowerCase()
  var mode = modes[modeName]
  var type
  if (opts.decrypt) {
    type = 'decrypt'
  } else {
    type = 'encrypt'
  }
  var key = opts.key
  if (modeName === 'des-ede' || modeName === 'des-ede-cbc') {
    key = Buffer.concat([key, key.slice(0, 8)])
  }
  var iv = opts.iv
  this._des = mode.create({
    key: key,
    iv: iv,
    type: type
  })
}
DES.prototype._update = function (data) {
  return new Buffer(this._des.update(data))
}
DES.prototype._final = function () {
  return new Buffer(this._des.final())
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"cipher-base":204,"des.js":205,"inherits":377}],203:[function(require,module,exports){
exports['des-ecb'] = {
  key: 8,
  iv: 0
}
exports['des-cbc'] = exports.des = {
  key: 8,
  iv: 8
}
exports['des-ede3-cbc'] = exports.des3 = {
  key: 24,
  iv: 8
}
exports['des-ede3'] = {
  key: 24,
  iv: 0
}
exports['des-ede-cbc'] = {
  key: 16,
  iv: 8
}
exports['des-ede'] = {
  key: 16,
  iv: 0
}

},{}],204:[function(require,module,exports){
arguments[4][17][0].apply(exports,arguments)
},{"buffer":177,"dup":17,"inherits":377,"stream":399,"string_decoder":406}],205:[function(require,module,exports){
'use strict';

exports.utils = require('./des/utils');
exports.Cipher = require('./des/cipher');
exports.DES = require('./des/des');
exports.CBC = require('./des/cbc');
exports.EDE = require('./des/ede');

},{"./des/cbc":206,"./des/cipher":207,"./des/des":208,"./des/ede":209,"./des/utils":210}],206:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var proto = {};

function CBCState(iv) {
  assert.equal(iv.length, 8, 'Invalid IV length');

  this.iv = new Array(8);
  for (var i = 0; i < this.iv.length; i++)
    this.iv[i] = iv[i];
}

function instantiate(Base) {
  function CBC(options) {
    Base.call(this, options);
    this._cbcInit();
  }
  inherits(CBC, Base);

  var keys = Object.keys(proto);
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    CBC.prototype[key] = proto[key];
  }

  CBC.create = function create(options) {
    return new CBC(options);
  };

  return CBC;
}

exports.instantiate = instantiate;

proto._cbcInit = function _cbcInit() {
  var state = new CBCState(this.options.iv);
  this._cbcState = state;
};

proto._update = function _update(inp, inOff, out, outOff) {
  var state = this._cbcState;
  var superProto = this.constructor.super_.prototype;

  var iv = state.iv;
  if (this.type === 'encrypt') {
    for (var i = 0; i < this.blockSize; i++)
      iv[i] ^= inp[inOff + i];

    superProto._update.call(this, iv, 0, out, outOff);

    for (var i = 0; i < this.blockSize; i++)
      iv[i] = out[outOff + i];
  } else {
    superProto._update.call(this, inp, inOff, out, outOff);

    for (var i = 0; i < this.blockSize; i++)
      out[outOff + i] ^= iv[i];

    for (var i = 0; i < this.blockSize; i++)
      iv[i] = inp[inOff + i];
  }
};

},{"inherits":377,"minimalistic-assert":211}],207:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');

function Cipher(options) {
  this.options = options;

  this.type = this.options.type;
  this.blockSize = 8;
  this._init();

  this.buffer = new Array(this.blockSize);
  this.bufferOff = 0;
}
module.exports = Cipher;

Cipher.prototype._init = function _init() {
  // Might be overrided
};

Cipher.prototype.update = function update(data) {
  if (data.length === 0)
    return [];

  if (this.type === 'decrypt')
    return this._updateDecrypt(data);
  else
    return this._updateEncrypt(data);
};

Cipher.prototype._buffer = function _buffer(data, off) {
  // Append data to buffer
  var min = Math.min(this.buffer.length - this.bufferOff, data.length - off);
  for (var i = 0; i < min; i++)
    this.buffer[this.bufferOff + i] = data[off + i];
  this.bufferOff += min;

  // Shift next
  return min;
};

Cipher.prototype._flushBuffer = function _flushBuffer(out, off) {
  this._update(this.buffer, 0, out, off);
  this.bufferOff = 0;
  return this.blockSize;
};

Cipher.prototype._updateEncrypt = function _updateEncrypt(data) {
  var inputOff = 0;
  var outputOff = 0;

  var count = ((this.bufferOff + data.length) / this.blockSize) | 0;
  var out = new Array(count * this.blockSize);

  if (this.bufferOff !== 0) {
    inputOff += this._buffer(data, inputOff);

    if (this.bufferOff === this.buffer.length)
      outputOff += this._flushBuffer(out, outputOff);
  }

  // Write blocks
  var max = data.length - ((data.length - inputOff) % this.blockSize);
  for (; inputOff < max; inputOff += this.blockSize) {
    this._update(data, inputOff, out, outputOff);
    outputOff += this.blockSize;
  }

  // Queue rest
  for (; inputOff < data.length; inputOff++, this.bufferOff++)
    this.buffer[this.bufferOff] = data[inputOff];

  return out;
};

Cipher.prototype._updateDecrypt = function _updateDecrypt(data) {
  var inputOff = 0;
  var outputOff = 0;

  var count = Math.ceil((this.bufferOff + data.length) / this.blockSize) - 1;
  var out = new Array(count * this.blockSize);

  // TODO(indutny): optimize it, this is far from optimal
  for (; count > 0; count--) {
    inputOff += this._buffer(data, inputOff);
    outputOff += this._flushBuffer(out, outputOff);
  }

  // Buffer rest of the input
  inputOff += this._buffer(data, inputOff);

  return out;
};

Cipher.prototype.final = function final(buffer) {
  var first;
  if (buffer)
    first = this.update(buffer);

  var last;
  if (this.type === 'encrypt')
    last = this._finalEncrypt();
  else
    last = this._finalDecrypt();

  if (first)
    return first.concat(last);
  else
    return last;
};

Cipher.prototype._pad = function _pad(buffer, off) {
  if (off === 0)
    return false;

  while (off < buffer.length)
    buffer[off++] = 0;

  return true;
};

Cipher.prototype._finalEncrypt = function _finalEncrypt() {
  if (!this._pad(this.buffer, this.bufferOff))
    return [];

  var out = new Array(this.blockSize);
  this._update(this.buffer, 0, out, 0);
  return out;
};

Cipher.prototype._unpad = function _unpad(buffer) {
  return buffer;
};

Cipher.prototype._finalDecrypt = function _finalDecrypt() {
  assert.equal(this.bufferOff, this.blockSize, 'Not enough data to decrypt');
  var out = new Array(this.blockSize);
  this._flushBuffer(out, 0);

  return this._unpad(out);
};

},{"minimalistic-assert":211}],208:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var des = require('../des');
var utils = des.utils;
var Cipher = des.Cipher;

function DESState() {
  this.tmp = new Array(2);
  this.keys = null;
}

function DES(options) {
  Cipher.call(this, options);

  var state = new DESState();
  this._desState = state;

  this.deriveKeys(state, options.key);
}
inherits(DES, Cipher);
module.exports = DES;

DES.create = function create(options) {
  return new DES(options);
};

var shiftTable = [
  1, 1, 2, 2, 2, 2, 2, 2,
  1, 2, 2, 2, 2, 2, 2, 1
];

DES.prototype.deriveKeys = function deriveKeys(state, key) {
  state.keys = new Array(16 * 2);

  assert.equal(key.length, this.blockSize, 'Invalid key length');

  var kL = utils.readUInt32BE(key, 0);
  var kR = utils.readUInt32BE(key, 4);

  utils.pc1(kL, kR, state.tmp, 0);
  kL = state.tmp[0];
  kR = state.tmp[1];
  for (var i = 0; i < state.keys.length; i += 2) {
    var shift = shiftTable[i >>> 1];
    kL = utils.r28shl(kL, shift);
    kR = utils.r28shl(kR, shift);
    utils.pc2(kL, kR, state.keys, i);
  }
};

DES.prototype._update = function _update(inp, inOff, out, outOff) {
  var state = this._desState;

  var l = utils.readUInt32BE(inp, inOff);
  var r = utils.readUInt32BE(inp, inOff + 4);

  // Initial Permutation
  utils.ip(l, r, state.tmp, 0);
  l = state.tmp[0];
  r = state.tmp[1];

  if (this.type === 'encrypt')
    this._encrypt(state, l, r, state.tmp, 0);
  else
    this._decrypt(state, l, r, state.tmp, 0);

  l = state.tmp[0];
  r = state.tmp[1];

  utils.writeUInt32BE(out, l, outOff);
  utils.writeUInt32BE(out, r, outOff + 4);
};

DES.prototype._pad = function _pad(buffer, off) {
  var value = buffer.length - off;
  for (var i = off; i < buffer.length; i++)
    buffer[i] = value;

  return true;
};

DES.prototype._unpad = function _unpad(buffer) {
  var pad = buffer[buffer.length - 1];
  for (var i = buffer.length - pad; i < buffer.length; i++)
    assert.equal(buffer[i], pad);

  return buffer.slice(0, buffer.length - pad);
};

DES.prototype._encrypt = function _encrypt(state, lStart, rStart, out, off) {
  var l = lStart;
  var r = rStart;

  // Apply f() x16 times
  for (var i = 0; i < state.keys.length; i += 2) {
    var keyL = state.keys[i];
    var keyR = state.keys[i + 1];

    // f(r, k)
    utils.expand(r, state.tmp, 0);

    keyL ^= state.tmp[0];
    keyR ^= state.tmp[1];
    var s = utils.substitute(keyL, keyR);
    var f = utils.permute(s);

    var t = r;
    r = (l ^ f) >>> 0;
    l = t;
  }

  // Reverse Initial Permutation
  utils.rip(r, l, out, off);
};

DES.prototype._decrypt = function _decrypt(state, lStart, rStart, out, off) {
  var l = rStart;
  var r = lStart;

  // Apply f() x16 times
  for (var i = state.keys.length - 2; i >= 0; i -= 2) {
    var keyL = state.keys[i];
    var keyR = state.keys[i + 1];

    // f(r, k)
    utils.expand(l, state.tmp, 0);

    keyL ^= state.tmp[0];
    keyR ^= state.tmp[1];
    var s = utils.substitute(keyL, keyR);
    var f = utils.permute(s);

    var t = l;
    l = (r ^ f) >>> 0;
    r = t;
  }

  // Reverse Initial Permutation
  utils.rip(l, r, out, off);
};

},{"../des":205,"inherits":377,"minimalistic-assert":211}],209:[function(require,module,exports){
'use strict';

var assert = require('minimalistic-assert');
var inherits = require('inherits');

var des = require('../des');
var Cipher = des.Cipher;
var DES = des.DES;

function EDEState(type, key) {
  assert.equal(key.length, 24, 'Invalid key length');

  var k1 = key.slice(0, 8);
  var k2 = key.slice(8, 16);
  var k3 = key.slice(16, 24);

  if (type === 'encrypt') {
    this.ciphers = [
      DES.create({ type: 'encrypt', key: k1 }),
      DES.create({ type: 'decrypt', key: k2 }),
      DES.create({ type: 'encrypt', key: k3 })
    ];
  } else {
    this.ciphers = [
      DES.create({ type: 'decrypt', key: k3 }),
      DES.create({ type: 'encrypt', key: k2 }),
      DES.create({ type: 'decrypt', key: k1 })
    ];
  }
}

function EDE(options) {
  Cipher.call(this, options);

  var state = new EDEState(this.type, this.options.key);
  this._edeState = state;
}
inherits(EDE, Cipher);

module.exports = EDE;

EDE.create = function create(options) {
  return new EDE(options);
};

EDE.prototype._update = function _update(inp, inOff, out, outOff) {
  var state = this._edeState;

  state.ciphers[0]._update(inp, inOff, out, outOff);
  state.ciphers[1]._update(out, outOff, out, outOff);
  state.ciphers[2]._update(out, outOff, out, outOff);
};

EDE.prototype._pad = DES.prototype._pad;
EDE.prototype._unpad = DES.prototype._unpad;

},{"../des":205,"inherits":377,"minimalistic-assert":211}],210:[function(require,module,exports){
'use strict';

exports.readUInt32BE = function readUInt32BE(bytes, off) {
  var res =  (bytes[0 + off] << 24) |
             (bytes[1 + off] << 16) |
             (bytes[2 + off] << 8) |
             bytes[3 + off];
  return res >>> 0;
};

exports.writeUInt32BE = function writeUInt32BE(bytes, value, off) {
  bytes[0 + off] = value >>> 24;
  bytes[1 + off] = (value >>> 16) & 0xff;
  bytes[2 + off] = (value >>> 8) & 0xff;
  bytes[3 + off] = value & 0xff;
};

exports.ip = function ip(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  for (var i = 6; i >= 0; i -= 2) {
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inR >>> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inL >>> (j + i)) & 1;
    }
  }

  for (var i = 6; i >= 0; i -= 2) {
    for (var j = 1; j <= 25; j += 8) {
      outR <<= 1;
      outR |= (inR >>> (j + i)) & 1;
    }
    for (var j = 1; j <= 25; j += 8) {
      outR <<= 1;
      outR |= (inL >>> (j + i)) & 1;
    }
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.rip = function rip(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  for (var i = 0; i < 4; i++) {
    for (var j = 24; j >= 0; j -= 8) {
      outL <<= 1;
      outL |= (inR >>> (j + i)) & 1;
      outL <<= 1;
      outL |= (inL >>> (j + i)) & 1;
    }
  }
  for (var i = 4; i < 8; i++) {
    for (var j = 24; j >= 0; j -= 8) {
      outR <<= 1;
      outR |= (inR >>> (j + i)) & 1;
      outR <<= 1;
      outR |= (inL >>> (j + i)) & 1;
    }
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.pc1 = function pc1(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  // 7, 15, 23, 31, 39, 47, 55, 63
  // 6, 14, 22, 30, 39, 47, 55, 63
  // 5, 13, 21, 29, 39, 47, 55, 63
  // 4, 12, 20, 28
  for (var i = 7; i >= 5; i--) {
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inR >> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outL <<= 1;
      outL |= (inL >> (j + i)) & 1;
    }
  }
  for (var j = 0; j <= 24; j += 8) {
    outL <<= 1;
    outL |= (inR >> (j + i)) & 1;
  }

  // 1, 9, 17, 25, 33, 41, 49, 57
  // 2, 10, 18, 26, 34, 42, 50, 58
  // 3, 11, 19, 27, 35, 43, 51, 59
  // 36, 44, 52, 60
  for (var i = 1; i <= 3; i++) {
    for (var j = 0; j <= 24; j += 8) {
      outR <<= 1;
      outR |= (inR >> (j + i)) & 1;
    }
    for (var j = 0; j <= 24; j += 8) {
      outR <<= 1;
      outR |= (inL >> (j + i)) & 1;
    }
  }
  for (var j = 0; j <= 24; j += 8) {
    outR <<= 1;
    outR |= (inL >> (j + i)) & 1;
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.r28shl = function r28shl(num, shift) {
  return ((num << shift) & 0xfffffff) | (num >>> (28 - shift));
};

var pc2table = [
  // inL => outL
  14, 11, 17, 4, 27, 23, 25, 0,
  13, 22, 7, 18, 5, 9, 16, 24,
  2, 20, 12, 21, 1, 8, 15, 26,

  // inR => outR
  15, 4, 25, 19, 9, 1, 26, 16,
  5, 11, 23, 8, 12, 7, 17, 0,
  22, 3, 10, 14, 6, 20, 27, 24
];

exports.pc2 = function pc2(inL, inR, out, off) {
  var outL = 0;
  var outR = 0;

  var len = pc2table.length >>> 1;
  for (var i = 0; i < len; i++) {
    outL <<= 1;
    outL |= (inL >>> pc2table[i]) & 0x1;
  }
  for (var i = len; i < pc2table.length; i++) {
    outR <<= 1;
    outR |= (inR >>> pc2table[i]) & 0x1;
  }

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

exports.expand = function expand(r, out, off) {
  var outL = 0;
  var outR = 0;

  outL = ((r & 1) << 5) | (r >>> 27);
  for (var i = 23; i >= 15; i -= 4) {
    outL <<= 6;
    outL |= (r >>> i) & 0x3f;
  }
  for (var i = 11; i >= 3; i -= 4) {
    outR |= (r >>> i) & 0x3f;
    outR <<= 6;
  }
  outR |= ((r & 0x1f) << 1) | (r >>> 31);

  out[off + 0] = outL >>> 0;
  out[off + 1] = outR >>> 0;
};

var sTable = [
  14, 0, 4, 15, 13, 7, 1, 4, 2, 14, 15, 2, 11, 13, 8, 1,
  3, 10, 10, 6, 6, 12, 12, 11, 5, 9, 9, 5, 0, 3, 7, 8,
  4, 15, 1, 12, 14, 8, 8, 2, 13, 4, 6, 9, 2, 1, 11, 7,
  15, 5, 12, 11, 9, 3, 7, 14, 3, 10, 10, 0, 5, 6, 0, 13,

  15, 3, 1, 13, 8, 4, 14, 7, 6, 15, 11, 2, 3, 8, 4, 14,
  9, 12, 7, 0, 2, 1, 13, 10, 12, 6, 0, 9, 5, 11, 10, 5,
  0, 13, 14, 8, 7, 10, 11, 1, 10, 3, 4, 15, 13, 4, 1, 2,
  5, 11, 8, 6, 12, 7, 6, 12, 9, 0, 3, 5, 2, 14, 15, 9,

  10, 13, 0, 7, 9, 0, 14, 9, 6, 3, 3, 4, 15, 6, 5, 10,
  1, 2, 13, 8, 12, 5, 7, 14, 11, 12, 4, 11, 2, 15, 8, 1,
  13, 1, 6, 10, 4, 13, 9, 0, 8, 6, 15, 9, 3, 8, 0, 7,
  11, 4, 1, 15, 2, 14, 12, 3, 5, 11, 10, 5, 14, 2, 7, 12,

  7, 13, 13, 8, 14, 11, 3, 5, 0, 6, 6, 15, 9, 0, 10, 3,
  1, 4, 2, 7, 8, 2, 5, 12, 11, 1, 12, 10, 4, 14, 15, 9,
  10, 3, 6, 15, 9, 0, 0, 6, 12, 10, 11, 1, 7, 13, 13, 8,
  15, 9, 1, 4, 3, 5, 14, 11, 5, 12, 2, 7, 8, 2, 4, 14,

  2, 14, 12, 11, 4, 2, 1, 12, 7, 4, 10, 7, 11, 13, 6, 1,
  8, 5, 5, 0, 3, 15, 15, 10, 13, 3, 0, 9, 14, 8, 9, 6,
  4, 11, 2, 8, 1, 12, 11, 7, 10, 1, 13, 14, 7, 2, 8, 13,
  15, 6, 9, 15, 12, 0, 5, 9, 6, 10, 3, 4, 0, 5, 14, 3,

  12, 10, 1, 15, 10, 4, 15, 2, 9, 7, 2, 12, 6, 9, 8, 5,
  0, 6, 13, 1, 3, 13, 4, 14, 14, 0, 7, 11, 5, 3, 11, 8,
  9, 4, 14, 3, 15, 2, 5, 12, 2, 9, 8, 5, 12, 15, 3, 10,
  7, 11, 0, 14, 4, 1, 10, 7, 1, 6, 13, 0, 11, 8, 6, 13,

  4, 13, 11, 0, 2, 11, 14, 7, 15, 4, 0, 9, 8, 1, 13, 10,
  3, 14, 12, 3, 9, 5, 7, 12, 5, 2, 10, 15, 6, 8, 1, 6,
  1, 6, 4, 11, 11, 13, 13, 8, 12, 1, 3, 4, 7, 10, 14, 7,
  10, 9, 15, 5, 6, 0, 8, 15, 0, 14, 5, 2, 9, 3, 2, 12,

  13, 1, 2, 15, 8, 13, 4, 8, 6, 10, 15, 3, 11, 7, 1, 4,
  10, 12, 9, 5, 3, 6, 14, 11, 5, 0, 0, 14, 12, 9, 7, 2,
  7, 2, 11, 1, 4, 14, 1, 7, 9, 4, 12, 10, 14, 8, 2, 13,
  0, 15, 6, 12, 10, 9, 13, 0, 15, 3, 3, 5, 5, 6, 8, 11
];

exports.substitute = function substitute(inL, inR) {
  var out = 0;
  for (var i = 0; i < 4; i++) {
    var b = (inL >>> (18 - i * 6)) & 0x3f;
    var sb = sTable[i * 0x40 + b];

    out <<= 4;
    out |= sb;
  }
  for (var i = 0; i < 4; i++) {
    var b = (inR >>> (18 - i * 6)) & 0x3f;
    var sb = sTable[4 * 0x40 + i * 0x40 + b];

    out <<= 4;
    out |= sb;
  }
  return out >>> 0;
};

var permuteTable = [
  16, 25, 12, 11, 3, 20, 4, 15, 31, 17, 9, 6, 27, 14, 1, 22,
  30, 24, 8, 18, 0, 5, 29, 23, 13, 19, 2, 26, 10, 21, 28, 7
];

exports.permute = function permute(num) {
  var out = 0;
  for (var i = 0; i < permuteTable.length; i++) {
    out <<= 1;
    out |= (num >>> permuteTable[i]) & 0x1;
  }
  return out >>> 0;
};

exports.padSplit = function padSplit(num, size, group) {
  var str = num.toString(2);
  while (str.length < size)
    str = '0' + str;

  var out = [];
  for (var i = 0; i < size; i += group)
    out.push(str.slice(i, i + group));
  return out.join(' ');
};

},{}],211:[function(require,module,exports){
module.exports = assert;

function assert(val, msg) {
  if (!val)
    throw new Error(msg || 'Assertion failed');
}

assert.equal = function assertEqual(l, r, msg) {
  if (l != r)
    throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r));
};

},{}],212:[function(require,module,exports){
(function (Buffer){
var md5 = require('create-hash/md5')
module.exports = EVP_BytesToKey
function EVP_BytesToKey (password, salt, keyLen, ivLen) {
  if (!Buffer.isBuffer(password)) {
    password = new Buffer(password, 'binary')
  }
  if (salt && !Buffer.isBuffer(salt)) {
    salt = new Buffer(salt, 'binary')
  }
  keyLen = keyLen / 8
  ivLen = ivLen || 0
  var ki = 0
  var ii = 0
  var key = new Buffer(keyLen)
  var iv = new Buffer(ivLen)
  var addmd = 0
  var md_buf
  var i
  var bufs = []
  while (true) {
    if (addmd++ > 0) {
      bufs.push(md_buf)
    }
    bufs.push(password)
    if (salt) {
      bufs.push(salt)
    }
    md_buf = md5(Buffer.concat(bufs))
    bufs = []
    i = 0
    if (keyLen > 0) {
      while (true) {
        if (keyLen === 0) {
          break
        }
        if (i === md_buf.length) {
          break
        }
        key[ki++] = md_buf[i]
        keyLen--
        i++
      }
    }
    if (ivLen > 0 && i !== md_buf.length) {
      while (true) {
        if (ivLen === 0) {
          break
        }
        if (i === md_buf.length) {
          break
        }
        iv[ii++] = md_buf[i]
        ivLen--
        i++
      }
    }
    if (keyLen === 0 && ivLen === 0) {
      break
    }
  }
  for (i = 0; i < md_buf.length; i++) {
    md_buf[i] = 0
  }
  return {
    key: key,
    iv: iv
  }
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"create-hash/md5":309}],213:[function(require,module,exports){
(function (Buffer){
'use strict'
exports['RSA-SHA224'] = exports.sha224WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha224',
  id: new Buffer('302d300d06096086480165030402040500041c', 'hex')
}
exports['RSA-SHA256'] = exports.sha256WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha256',
  id: new Buffer('3031300d060960864801650304020105000420', 'hex')
}
exports['RSA-SHA384'] = exports.sha384WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha384',
  id: new Buffer('3041300d060960864801650304020205000430', 'hex')
}
exports['RSA-SHA512'] = exports.sha512WithRSAEncryption = {
  sign: 'rsa',
  hash: 'sha512',
  id: new Buffer('3051300d060960864801650304020305000440', 'hex')
}
exports['RSA-SHA1'] = {
  sign: 'rsa',
  hash: 'sha1',
  id: new Buffer('3021300906052b0e03021a05000414', 'hex')
}
exports['ecdsa-with-SHA1'] = {
  sign: 'ecdsa',
  hash: 'sha1',
  id: new Buffer('', 'hex')
}

exports.DSA = exports['DSA-SHA1'] = exports['DSA-SHA'] = {
  sign: 'dsa',
  hash: 'sha1',
  id: new Buffer('', 'hex')
}
exports['DSA-SHA224'] = exports['DSA-WITH-SHA224'] = {
  sign: 'dsa',
  hash: 'sha224',
  id: new Buffer('', 'hex')
}
exports['DSA-SHA256'] = exports['DSA-WITH-SHA256'] = {
  sign: 'dsa',
  hash: 'sha256',
  id: new Buffer('', 'hex')
}
exports['DSA-SHA384'] = exports['DSA-WITH-SHA384'] = {
  sign: 'dsa',
  hash: 'sha384',
  id: new Buffer('', 'hex')
}
exports['DSA-SHA512'] = exports['DSA-WITH-SHA512'] = {
  sign: 'dsa',
  hash: 'sha512',
  id: new Buffer('', 'hex')
}
exports['DSA-RIPEMD160'] = {
  sign: 'dsa',
  hash: 'rmd160',
  id: new Buffer('', 'hex')
}
exports['RSA-RIPEMD160'] = exports.ripemd160WithRSA = {
  sign: 'rsa',
  hash: 'rmd160',
  id: new Buffer('3021300906052b2403020105000414', 'hex')
}
exports['RSA-MD5'] = exports.md5WithRSAEncryption = {
  sign: 'rsa',
  hash: 'md5',
  id: new Buffer('3020300c06082a864886f70d020505000410', 'hex')
}

}).call(this,require("buffer").Buffer)
},{"buffer":177}],214:[function(require,module,exports){
(function (Buffer){
var _algos = require('./algos')
var createHash = require('create-hash')
var inherits = require('inherits')
var sign = require('./sign')
var stream = require('stream')
var verify = require('./verify')

var algos = {}
Object.keys(_algos).forEach(function (key) {
  algos[key] = algos[key.toLowerCase()] = _algos[key]
})

function Sign (algorithm) {
  stream.Writable.call(this)

  var data = algos[algorithm]
  if (!data) {
    throw new Error('Unknown message digest')
  }

  this._hashType = data.hash
  this._hash = createHash(data.hash)
  this._tag = data.id
  this._signType = data.sign
}
inherits(Sign, stream.Writable)

Sign.prototype._write = function _write (data, _, done) {
  this._hash.update(data)
  done()
}

Sign.prototype.update = function update (data, enc) {
  if (typeof data === 'string') {
    data = new Buffer(data, enc)
  }

  this._hash.update(data)
  return this
}

Sign.prototype.sign = function signMethod (key, enc) {
  this.end()
  var hash = this._hash.digest()
  var sig = sign(Buffer.concat([this._tag, hash]), key, this._hashType, this._signType)

  return enc ? sig.toString(enc) : sig
}

function Verify (algorithm) {
  stream.Writable.call(this)

  var data = algos[algorithm]
  if (!data) {
    throw new Error('Unknown message digest')
  }

  this._hash = createHash(data.hash)
  this._tag = data.id
  this._signType = data.sign
}
inherits(Verify, stream.Writable)

Verify.prototype._write = function _write (data, _, done) {
  this._hash.update(data)

  done()
}

Verify.prototype.update = function update (data, enc) {
  if (typeof data === 'string') {
    data = new Buffer(data, enc)
  }

  this._hash.update(data)
  return this
}

Verify.prototype.verify = function verifyMethod (key, sig, enc) {
  if (typeof sig === 'string') {
    sig = new Buffer(sig, enc)
  }

  this.end()
  var hash = this._hash.digest()

  return verify(sig, Buffer.concat([this._tag, hash]), key, this._signType)
}

function createSign (algorithm) {
  return new Sign(algorithm)
}

function createVerify (algorithm) {
  return new Verify(algorithm)
}

module.exports = {
  Sign: createSign,
  Verify: createVerify,
  createSign: createSign,
  createVerify: createVerify
}

}).call(this,require("buffer").Buffer)
},{"./algos":213,"./sign":279,"./verify":280,"buffer":177,"create-hash":307,"inherits":377,"stream":399}],215:[function(require,module,exports){
'use strict'
exports['1.3.132.0.10'] = 'secp256k1'

exports['1.3.132.0.33'] = 'p224'

exports['1.2.840.10045.3.1.1'] = 'p192'

exports['1.2.840.10045.3.1.7'] = 'p256'

exports['1.3.132.0.34'] = 'p384'

exports['1.3.132.0.35'] = 'p521'

},{}],216:[function(require,module,exports){
(function (module, exports) {
  'use strict';

  // Utils
  function assert (val, msg) {
    if (!val) throw new Error(msg || 'Assertion failed');
  }

  // Could use `inherits` module, but don't want to move from single file
  // architecture yet.
  function inherits (ctor, superCtor) {
    ctor.super_ = superCtor;
    var TempCtor = function () {};
    TempCtor.prototype = superCtor.prototype;
    ctor.prototype = new TempCtor();
    ctor.prototype.constructor = ctor;
  }

  // BN

  function BN (number, base, endian) {
    // May be `new BN(bn)` ?
    if (number !== null &&
      typeof number === 'object' &&
      Array.isArray(number.words)) {
      return number;
    }

    this.negative = 0;
    this.words = null;
    this.length = 0;

    // Reduction context
    this.red = null;

    if (number !== null) {
      if (base === 'le' || base === 'be') {
        endian = base;
        base = 10;
      }

      this._init(number || 0, base || 10, endian || 'be');
    }
  }
  if (typeof module === 'object') {
    module.exports = BN;
  } else {
    exports.BN = BN;
  }

  BN.BN = BN;
  BN.wordSize = 26;

  BN.max = function max (left, right) {
    if (left.cmp(right) > 0) return left;
    return right;
  };

  BN.min = function min (left, right) {
    if (left.cmp(right) < 0) return left;
    return right;
  };

  BN.prototype._init = function init (number, base, endian) {
    if (typeof number === 'number') {
      return this._initNumber(number, base, endian);
    }

    if (typeof number === 'object') {
      return this._initArray(number, base, endian);
    }

    if (base === 'hex') {
      base = 16;
    }
    assert(base === (base | 0) && base >= 2 && base <= 36);

    number = number.toString().replace(/\s+/g, '');
    var start = 0;
    if (number[0] === '-') {
      start++;
    }

    if (base === 16) {
      this._parseHex(number, start);
    } else {
      this._parseBase(number, base, start);
    }

    if (number[0] === '-') {
      this.negative = 1;
    }

    this.strip();

    if (endian !== 'le') return;

    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initNumber = function _initNumber (number, base, endian) {
    if (number < 0) {
      this.negative = 1;
      number = -number;
    }
    if (number < 0x4000000) {
      this.words = [ number & 0x3ffffff ];
      this.length = 1;
    } else if (number < 0x10000000000000) {
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff
      ];
      this.length = 2;
    } else {
      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff,
        1
      ];
      this.length = 3;
    }

    if (endian !== 'le') return;

    // Reverse the bytes
    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initArray = function _initArray (number, base, endian) {
    // Perhaps a Uint8Array
    assert(typeof number.length === 'number');
    if (number.length <= 0) {
      this.words = [ 0 ];
      this.length = 1;
      return this;
    }

    this.length = Math.ceil(number.length / 3);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    var off = 0;
    if (endian === 'be') {
      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    } else if (endian === 'le') {
      for (i = 0, j = 0; i < number.length; i += 3) {
        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    }
    return this.strip();
  };

  function parseHex (str, start, end) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r <<= 4;

      // 'a' - 'f'
      if (c >= 49 && c <= 54) {
        r |= c - 49 + 0xa;

      // 'A' - 'F'
      } else if (c >= 17 && c <= 22) {
        r |= c - 17 + 0xa;

      // '0' - '9'
      } else {
        r |= c & 0xf;
      }
    }
    return r;
  }

  BN.prototype._parseHex = function _parseHex (number, start) {
    // Create possibly bigger array to ensure that it fits the number
    this.length = Math.ceil((number.length - start) / 6);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    // Scan 24-bit chunks and add them to the number
    var off = 0;
    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
      w = parseHex(number, i, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
      off += 24;
      if (off >= 26) {
        off -= 26;
        j++;
      }
    }
    if (i + 6 !== start) {
      w = parseHex(number, start, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
    }
    this.strip();
  };

  function parseBase (str, start, end, mul) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r *= mul;

      // 'a'
      if (c >= 49) {
        r += c - 49 + 0xa;

      // 'A'
      } else if (c >= 17) {
        r += c - 17 + 0xa;

      // '0' - '9'
      } else {
        r += c;
      }
    }
    return r;
  }

  BN.prototype._parseBase = function _parseBase (number, base, start) {
    // Initialize as zero
    this.words = [ 0 ];
    this.length = 1;

    // Find length of limb in base
    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
      limbLen++;
    }
    limbLen--;
    limbPow = (limbPow / base) | 0;

    var total = number.length - start;
    var mod = total % limbLen;
    var end = Math.min(total, total - mod) + start;

    var word = 0;
    for (var i = start; i < end; i += limbLen) {
      word = parseBase(number, i, i + limbLen, base);

      this.imuln(limbPow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }

    if (mod !== 0) {
      var pow = 1;
      word = parseBase(number, i, number.length, base);

      for (i = 0; i < mod; i++) {
        pow *= base;
      }

      this.imuln(pow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }
  };

  BN.prototype.copy = function copy (dest) {
    dest.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      dest.words[i] = this.words[i];
    }
    dest.length = this.length;
    dest.negative = this.negative;
    dest.red = this.red;
  };

  BN.prototype.clone = function clone () {
    var r = new BN(null);
    this.copy(r);
    return r;
  };

  // Remove leading `0` from `this`
  BN.prototype.strip = function strip () {
    while (this.length > 1 && this.words[this.length - 1] === 0) {
      this.length--;
    }
    return this._normSign();
  };

  BN.prototype._normSign = function _normSign () {
    // -0 = 0
    if (this.length === 1 && this.words[0] === 0) {
      this.negative = 0;
    }
    return this;
  };

  BN.prototype.inspect = function inspect () {
    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
  };

  /*

  var zeros = [];
  var groupSizes = [];
  var groupBases = [];

  var s = '';
  var i = -1;
  while (++i < BN.wordSize) {
    zeros[i] = s;
    s += '0';
  }
  groupSizes[0] = 0;
  groupSizes[1] = 0;
  groupBases[0] = 0;
  groupBases[1] = 0;
  var base = 2 - 1;
  while (++base < 36 + 1) {
    var groupSize = 0;
    var groupBase = 1;
    while (groupBase < (1 << BN.wordSize) / base) {
      groupBase *= base;
      groupSize += 1;
    }
    groupSizes[base] = groupSize;
    groupBases[base] = groupBase;
  }

  */

  var zeros = [
    '',
    '0',
    '00',
    '000',
    '0000',
    '00000',
    '000000',
    '0000000',
    '00000000',
    '000000000',
    '0000000000',
    '00000000000',
    '000000000000',
    '0000000000000',
    '00000000000000',
    '000000000000000',
    '0000000000000000',
    '00000000000000000',
    '000000000000000000',
    '0000000000000000000',
    '00000000000000000000',
    '000000000000000000000',
    '0000000000000000000000',
    '00000000000000000000000',
    '000000000000000000000000',
    '0000000000000000000000000'
  ];

  var groupSizes = [
    0, 0,
    25, 16, 12, 11, 10, 9, 8,
    8, 7, 7, 7, 7, 6, 6,
    6, 6, 6, 6, 6, 5, 5,
    5, 5, 5, 5, 5, 5, 5,
    5, 5, 5, 5, 5, 5, 5
  ];

  var groupBases = [
    0, 0,
    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
  ];

  BN.prototype.toString = function toString (base, padding) {
    base = base || 10;
    padding = padding | 0 || 1;

    var out;
    if (base === 16 || base === 'hex') {
      out = '';
      var off = 0;
      var carry = 0;
      for (var i = 0; i < this.length; i++) {
        var w = this.words[i];
        var word = (((w << off) | carry) & 0xffffff).toString(16);
        carry = (w >>> (24 - off)) & 0xffffff;
        if (carry !== 0 || i !== this.length - 1) {
          out = zeros[6 - word.length] + word + out;
        } else {
          out = word + out;
        }
        off += 2;
        if (off >= 26) {
          off -= 26;
          i--;
        }
      }
      if (carry !== 0) {
        out = carry.toString(16) + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    if (base === (base | 0) && base >= 2 && base <= 36) {
      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
      var groupSize = groupSizes[base];
      // var groupBase = Math.pow(base, groupSize);
      var groupBase = groupBases[base];
      out = '';
      var c = this.clone();
      c.negative = 0;
      while (!c.isZero()) {
        var r = c.modn(groupBase).toString(base);
        c = c.idivn(groupBase);

        if (!c.isZero()) {
          out = zeros[groupSize - r.length] + r + out;
        } else {
          out = r + out;
        }
      }
      if (this.isZero()) {
        out = '0' + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    assert(false, 'Base should be between 2 and 36');
  };

  BN.prototype.toNumber = function toNumber () {
    assert(this.bitLength() <= 53, 'Number can only safely store up to 53 bits');
    return parseInt(this.toString(), 10);
  };

  BN.prototype.toJSON = function toJSON () {
    return this.toString(16);
  };

  BN.prototype.toArray = function toArray (endian, length) {
    var byteLength = this.byteLength();
    var reqLength = length || Math.max(1, byteLength);
    assert(byteLength <= reqLength, 'byte array longer than desired length');
    assert(reqLength > 0, 'Requested array length <= 0');

    this.strip();
    var littleEndian = endian === 'le';
    var res = new Array(reqLength);

    var b, i;
    var q = this.clone();
    if (!littleEndian) {
      // Assume big-endian
      for (i = 0; i < reqLength - byteLength; i++) {
        res[i] = 0;
      }

      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[reqLength - i - 1] = b;
      }
    } else {
      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[i] = b;
      }

      for (; i < reqLength; i++) {
        res[i] = 0;
      }
    }

    return res;
  };

  if (Math.clz32) {
    BN.prototype._countBits = function _countBits (w) {
      return 32 - Math.clz32(w);
    };
  } else {
    BN.prototype._countBits = function _countBits (w) {
      var t = w;
      var r = 0;
      if (t >= 0x1000) {
        r += 13;
        t >>>= 13;
      }
      if (t >= 0x40) {
        r += 7;
        t >>>= 7;
      }
      if (t >= 0x8) {
        r += 4;
        t >>>= 4;
      }
      if (t >= 0x02) {
        r += 2;
        t >>>= 2;
      }
      return r + t;
    };
  }

  BN.prototype._zeroBits = function _zeroBits (w) {
    // Short-cut
    if (w === 0) return 26;

    var t = w;
    var r = 0;
    if ((t & 0x1fff) === 0) {
      r += 13;
      t >>>= 13;
    }
    if ((t & 0x7f) === 0) {
      r += 7;
      t >>>= 7;
    }
    if ((t & 0xf) === 0) {
      r += 4;
      t >>>= 4;
    }
    if ((t & 0x3) === 0) {
      r += 2;
      t >>>= 2;
    }
    if ((t & 0x1) === 0) {
      r++;
    }
    return r;
  };

  // Return number of used bits in a BN
  BN.prototype.bitLength = function bitLength () {
    var w = this.words[this.length - 1];
    var hi = this._countBits(w);
    return (this.length - 1) * 26 + hi;
  };

  function toBitArray (num) {
    var w = new Array(num.bitLength());

    for (var bit = 0; bit < w.length; bit++) {
      var off = (bit / 26) | 0;
      var wbit = bit % 26;

      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
    }

    return w;
  }

  // Number of trailing zero bits
  BN.prototype.zeroBits = function zeroBits () {
    if (this.isZero()) return 0;

    var r = 0;
    for (var i = 0; i < this.length; i++) {
      var b = this._zeroBits(this.words[i]);
      r += b;
      if (b !== 26) break;
    }
    return r;
  };

  BN.prototype.byteLength = function byteLength () {
    return Math.ceil(this.bitLength() / 8);
  };

  BN.prototype.isNeg = function isNeg () {
    return this.negative !== 0;
  };

  // Return negative clone of `this`
  BN.prototype.neg = function neg () {
    return this.clone().ineg();
  };

  BN.prototype.ineg = function ineg () {
    if (!this.isZero()) {
      this.negative ^= 1;
    }

    return this;
  };

  // Or `num` with `this` in-place
  BN.prototype.iuor = function iuor (num) {
    while (this.length < num.length) {
      this.words[this.length++] = 0;
    }

    for (var i = 0; i < num.length; i++) {
      this.words[i] = this.words[i] | num.words[i];
    }

    return this.strip();
  };

  BN.prototype.ior = function ior (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuor(num);
  };

  // Or `num` with `this`
  BN.prototype.or = function or (num) {
    if (this.length > num.length) return this.clone().ior(num);
    return num.clone().ior(this);
  };

  BN.prototype.uor = function uor (num) {
    if (this.length > num.length) return this.clone().iuor(num);
    return num.clone().iuor(this);
  };

  // And `num` with `this` in-place
  BN.prototype.iuand = function iuand (num) {
    // b = min-length(num, this)
    var b;
    if (this.length > num.length) {
      b = num;
    } else {
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = this.words[i] & num.words[i];
    }

    this.length = b.length;

    return this.strip();
  };

  BN.prototype.iand = function iand (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuand(num);
  };

  // And `num` with `this`
  BN.prototype.and = function and (num) {
    if (this.length > num.length) return this.clone().iand(num);
    return num.clone().iand(this);
  };

  BN.prototype.uand = function uand (num) {
    if (this.length > num.length) return this.clone().iuand(num);
    return num.clone().iuand(this);
  };

  // Xor `num` with `this` in-place
  BN.prototype.iuxor = function iuxor (num) {
    // a.length > b.length
    var a;
    var b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = a.words[i] ^ b.words[i];
    }

    if (this !== a) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = a.length;

    return this.strip();
  };

  BN.prototype.ixor = function ixor (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuxor(num);
  };

  // Xor `num` with `this`
  BN.prototype.xor = function xor (num) {
    if (this.length > num.length) return this.clone().ixor(num);
    return num.clone().ixor(this);
  };

  BN.prototype.uxor = function uxor (num) {
    if (this.length > num.length) return this.clone().iuxor(num);
    return num.clone().iuxor(this);
  };

  // Not ``this`` with ``width`` bitwidth
  BN.prototype.inotn = function inotn (width) {
    assert(typeof width === 'number' && width >= 0);

    var bytesNeeded = Math.ceil(width / 26) | 0;
    var bitsLeft = width % 26;

    // Extend the buffer with leading zeroes
    while (this.length < bytesNeeded) {
      this.words[this.length++] = 0;
    }

    if (bitsLeft > 0) {
      bytesNeeded--;
    }

    // Handle complete words
    for (var i = 0; i < bytesNeeded; i++) {
      this.words[i] = ~this.words[i] & 0x3ffffff;
    }

    // Handle the residue
    if (bitsLeft > 0) {
      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
    }

    // And remove leading zeroes
    return this.strip();
  };

  BN.prototype.notn = function notn (width) {
    return this.clone().inotn(width);
  };

  // Set `bit` of `this`
  BN.prototype.setn = function setn (bit, val) {
    assert(typeof bit === 'number' && bit >= 0);

    var off = (bit / 26) | 0;
    var wbit = bit % 26;

    while (this.length <= off) {
      this.words[this.length++] = 0;
    }

    if (val) {
      this.words[off] = this.words[off] | (1 << wbit);
    } else {
      this.words[off] = this.words[off] & ~(1 << wbit);
    }

    return this.strip();
  };

  // Add `num` to `this` in-place
  BN.prototype.iadd = function iadd (num) {
    var r;

    // negative + positive
    if (this.negative !== 0 && num.negative === 0) {
      this.negative = 0;
      r = this.isub(num);
      this.negative ^= 1;
      return this._normSign();

    // positive + negative
    } else if (this.negative === 0 && num.negative !== 0) {
      num.negative = 0;
      r = this.isub(num);
      num.negative = 1;
      return r._normSign();
    }

    // a.length > b.length
    var a, b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }

    this.length = a.length;
    if (carry !== 0) {
      this.words[this.length] = carry;
      this.length++;
    // Copy the rest of the words
    } else if (a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    return this;
  };

  // Add `num` to `this`
  BN.prototype.add = function add (num) {
    var res;
    if (num.negative !== 0 && this.negative === 0) {
      num.negative = 0;
      res = this.sub(num);
      num.negative ^= 1;
      return res;
    } else if (num.negative === 0 && this.negative !== 0) {
      this.negative = 0;
      res = num.sub(this);
      this.negative = 1;
      return res;
    }

    if (this.length > num.length) return this.clone().iadd(num);

    return num.clone().iadd(this);
  };

  // Subtract `num` from `this` in-place
  BN.prototype.isub = function isub (num) {
    // this - (-num) = this + num
    if (num.negative !== 0) {
      num.negative = 0;
      var r = this.iadd(num);
      num.negative = 1;
      return r._normSign();

    // -this - num = -(this + num)
    } else if (this.negative !== 0) {
      this.negative = 0;
      this.iadd(num);
      this.negative = 1;
      return this._normSign();
    }

    // At this point both numbers are positive
    var cmp = this.cmp(num);

    // Optimization - zeroify
    if (cmp === 0) {
      this.negative = 0;
      this.length = 1;
      this.words[0] = 0;
      return this;
    }

    // a > b
    var a, b;
    if (cmp > 0) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }

    // Copy rest of the words
    if (carry === 0 && i < a.length && a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = Math.max(this.length, i);

    if (a !== this) {
      this.negative = 1;
    }

    return this.strip();
  };

  // Subtract `num` from `this`
  BN.prototype.sub = function sub (num) {
    return this.clone().isub(num);
  };

  function smallMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    var len = (self.length + num.length) | 0;
    out.length = len;
    len = (len - 1) | 0;

    // Peel one iteration (compiler can't do it, because of code complexity)
    var a = self.words[0] | 0;
    var b = num.words[0] | 0;
    var r = a * b;

    var lo = r & 0x3ffffff;
    var carry = (r / 0x4000000) | 0;
    out.words[0] = lo;

    for (var k = 1; k < len; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = carry >>> 26;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = (k - j) | 0;
        a = self.words[i] | 0;
        b = num.words[j] | 0;
        r = a * b + rword;
        ncarry += (r / 0x4000000) | 0;
        rword = r & 0x3ffffff;
      }
      out.words[k] = rword | 0;
      carry = ncarry | 0;
    }
    if (carry !== 0) {
      out.words[k] = carry | 0;
    } else {
      out.length--;
    }

    return out.strip();
  }

  // TODO(indutny): it may be reasonable to omit it for users who don't need
  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
  // multiplication (like elliptic secp256k1).
  var comb10MulTo = function comb10MulTo (self, num, out) {
    var a = self.words;
    var b = num.words;
    var o = out.words;
    var c = 0;
    var lo;
    var mid;
    var hi;
    var a0 = a[0] | 0;
    var al0 = a0 & 0x1fff;
    var ah0 = a0 >>> 13;
    var a1 = a[1] | 0;
    var al1 = a1 & 0x1fff;
    var ah1 = a1 >>> 13;
    var a2 = a[2] | 0;
    var al2 = a2 & 0x1fff;
    var ah2 = a2 >>> 13;
    var a3 = a[3] | 0;
    var al3 = a3 & 0x1fff;
    var ah3 = a3 >>> 13;
    var a4 = a[4] | 0;
    var al4 = a4 & 0x1fff;
    var ah4 = a4 >>> 13;
    var a5 = a[5] | 0;
    var al5 = a5 & 0x1fff;
    var ah5 = a5 >>> 13;
    var a6 = a[6] | 0;
    var al6 = a6 & 0x1fff;
    var ah6 = a6 >>> 13;
    var a7 = a[7] | 0;
    var al7 = a7 & 0x1fff;
    var ah7 = a7 >>> 13;
    var a8 = a[8] | 0;
    var al8 = a8 & 0x1fff;
    var ah8 = a8 >>> 13;
    var a9 = a[9] | 0;
    var al9 = a9 & 0x1fff;
    var ah9 = a9 >>> 13;
    var b0 = b[0] | 0;
    var bl0 = b0 & 0x1fff;
    var bh0 = b0 >>> 13;
    var b1 = b[1] | 0;
    var bl1 = b1 & 0x1fff;
    var bh1 = b1 >>> 13;
    var b2 = b[2] | 0;
    var bl2 = b2 & 0x1fff;
    var bh2 = b2 >>> 13;
    var b3 = b[3] | 0;
    var bl3 = b3 & 0x1fff;
    var bh3 = b3 >>> 13;
    var b4 = b[4] | 0;
    var bl4 = b4 & 0x1fff;
    var bh4 = b4 >>> 13;
    var b5 = b[5] | 0;
    var bl5 = b5 & 0x1fff;
    var bh5 = b5 >>> 13;
    var b6 = b[6] | 0;
    var bl6 = b6 & 0x1fff;
    var bh6 = b6 >>> 13;
    var b7 = b[7] | 0;
    var bl7 = b7 & 0x1fff;
    var bh7 = b7 >>> 13;
    var b8 = b[8] | 0;
    var bl8 = b8 & 0x1fff;
    var bh8 = b8 >>> 13;
    var b9 = b[9] | 0;
    var bl9 = b9 & 0x1fff;
    var bh9 = b9 >>> 13;

    out.negative = self.negative ^ num.negative;
    out.length = 19;
    /* k = 0 */
    lo = Math.imul(al0, bl0);
    mid = Math.imul(al0, bh0);
    mid += Math.imul(ah0, bl0);
    hi = Math.imul(ah0, bh0);
    var w0 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w0 >>> 26);
    w0 &= 0x3ffffff;
    /* k = 1 */
    lo = Math.imul(al1, bl0);
    mid = Math.imul(al1, bh0);
    mid += Math.imul(ah1, bl0);
    hi = Math.imul(ah1, bh0);
    lo += Math.imul(al0, bl1);
    mid += Math.imul(al0, bh1);
    mid += Math.imul(ah0, bl1);
    hi += Math.imul(ah0, bh1);
    var w1 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w1 >>> 26);
    w1 &= 0x3ffffff;
    /* k = 2 */
    lo = Math.imul(al2, bl0);
    mid = Math.imul(al2, bh0);
    mid += Math.imul(ah2, bl0);
    hi = Math.imul(ah2, bh0);
    lo += Math.imul(al1, bl1);
    mid += Math.imul(al1, bh1);
    mid += Math.imul(ah1, bl1);
    hi += Math.imul(ah1, bh1);
    lo += Math.imul(al0, bl2);
    mid += Math.imul(al0, bh2);
    mid += Math.imul(ah0, bl2);
    hi += Math.imul(ah0, bh2);
    var w2 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w2 >>> 26);
    w2 &= 0x3ffffff;
    /* k = 3 */
    lo = Math.imul(al3, bl0);
    mid = Math.imul(al3, bh0);
    mid += Math.imul(ah3, bl0);
    hi = Math.imul(ah3, bh0);
    lo += Math.imul(al2, bl1);
    mid += Math.imul(al2, bh1);
    mid += Math.imul(ah2, bl1);
    hi += Math.imul(ah2, bh1);
    lo += Math.imul(al1, bl2);
    mid += Math.imul(al1, bh2);
    mid += Math.imul(ah1, bl2);
    hi += Math.imul(ah1, bh2);
    lo += Math.imul(al0, bl3);
    mid += Math.imul(al0, bh3);
    mid += Math.imul(ah0, bl3);
    hi += Math.imul(ah0, bh3);
    var w3 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w3 >>> 26);
    w3 &= 0x3ffffff;
    /* k = 4 */
    lo = Math.imul(al4, bl0);
    mid = Math.imul(al4, bh0);
    mid += Math.imul(ah4, bl0);
    hi = Math.imul(ah4, bh0);
    lo += Math.imul(al3, bl1);
    mid += Math.imul(al3, bh1);
    mid += Math.imul(ah3, bl1);
    hi += Math.imul(ah3, bh1);
    lo += Math.imul(al2, bl2);
    mid += Math.imul(al2, bh2);
    mid += Math.imul(ah2, bl2);
    hi += Math.imul(ah2, bh2);
    lo += Math.imul(al1, bl3);
    mid += Math.imul(al1, bh3);
    mid += Math.imul(ah1, bl3);
    hi += Math.imul(ah1, bh3);
    lo += Math.imul(al0, bl4);
    mid += Math.imul(al0, bh4);
    mid += Math.imul(ah0, bl4);
    hi += Math.imul(ah0, bh4);
    var w4 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w4 >>> 26);
    w4 &= 0x3ffffff;
    /* k = 5 */
    lo = Math.imul(al5, bl0);
    mid = Math.imul(al5, bh0);
    mid += Math.imul(ah5, bl0);
    hi = Math.imul(ah5, bh0);
    lo += Math.imul(al4, bl1);
    mid += Math.imul(al4, bh1);
    mid += Math.imul(ah4, bl1);
    hi += Math.imul(ah4, bh1);
    lo += Math.imul(al3, bl2);
    mid += Math.imul(al3, bh2);
    mid += Math.imul(ah3, bl2);
    hi += Math.imul(ah3, bh2);
    lo += Math.imul(al2, bl3);
    mid += Math.imul(al2, bh3);
    mid += Math.imul(ah2, bl3);
    hi += Math.imul(ah2, bh3);
    lo += Math.imul(al1, bl4);
    mid += Math.imul(al1, bh4);
    mid += Math.imul(ah1, bl4);
    hi += Math.imul(ah1, bh4);
    lo += Math.imul(al0, bl5);
    mid += Math.imul(al0, bh5);
    mid += Math.imul(ah0, bl5);
    hi += Math.imul(ah0, bh5);
    var w5 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w5 >>> 26);
    w5 &= 0x3ffffff;
    /* k = 6 */
    lo = Math.imul(al6, bl0);
    mid = Math.imul(al6, bh0);
    mid += Math.imul(ah6, bl0);
    hi = Math.imul(ah6, bh0);
    lo += Math.imul(al5, bl1);
    mid += Math.imul(al5, bh1);
    mid += Math.imul(ah5, bl1);
    hi += Math.imul(ah5, bh1);
    lo += Math.imul(al4, bl2);
    mid += Math.imul(al4, bh2);
    mid += Math.imul(ah4, bl2);
    hi += Math.imul(ah4, bh2);
    lo += Math.imul(al3, bl3);
    mid += Math.imul(al3, bh3);
    mid += Math.imul(ah3, bl3);
    hi += Math.imul(ah3, bh3);
    lo += Math.imul(al2, bl4);
    mid += Math.imul(al2, bh4);
    mid += Math.imul(ah2, bl4);
    hi += Math.imul(ah2, bh4);
    lo += Math.imul(al1, bl5);
    mid += Math.imul(al1, bh5);
    mid += Math.imul(ah1, bl5);
    hi += Math.imul(ah1, bh5);
    lo += Math.imul(al0, bl6);
    mid += Math.imul(al0, bh6);
    mid += Math.imul(ah0, bl6);
    hi += Math.imul(ah0, bh6);
    var w6 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w6 >>> 26);
    w6 &= 0x3ffffff;
    /* k = 7 */
    lo = Math.imul(al7, bl0);
    mid = Math.imul(al7, bh0);
    mid += Math.imul(ah7, bl0);
    hi = Math.imul(ah7, bh0);
    lo += Math.imul(al6, bl1);
    mid += Math.imul(al6, bh1);
    mid += Math.imul(ah6, bl1);
    hi += Math.imul(ah6, bh1);
    lo += Math.imul(al5, bl2);
    mid += Math.imul(al5, bh2);
    mid += Math.imul(ah5, bl2);
    hi += Math.imul(ah5, bh2);
    lo += Math.imul(al4, bl3);
    mid += Math.imul(al4, bh3);
    mid += Math.imul(ah4, bl3);
    hi += Math.imul(ah4, bh3);
    lo += Math.imul(al3, bl4);
    mid += Math.imul(al3, bh4);
    mid += Math.imul(ah3, bl4);
    hi += Math.imul(ah3, bh4);
    lo += Math.imul(al2, bl5);
    mid += Math.imul(al2, bh5);
    mid += Math.imul(ah2, bl5);
    hi += Math.imul(ah2, bh5);
    lo += Math.imul(al1, bl6);
    mid += Math.imul(al1, bh6);
    mid += Math.imul(ah1, bl6);
    hi += Math.imul(ah1, bh6);
    lo += Math.imul(al0, bl7);
    mid += Math.imul(al0, bh7);
    mid += Math.imul(ah0, bl7);
    hi += Math.imul(ah0, bh7);
    var w7 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w7 >>> 26);
    w7 &= 0x3ffffff;
    /* k = 8 */
    lo = Math.imul(al8, bl0);
    mid = Math.imul(al8, bh0);
    mid += Math.imul(ah8, bl0);
    hi = Math.imul(ah8, bh0);
    lo += Math.imul(al7, bl1);
    mid += Math.imul(al7, bh1);
    mid += Math.imul(ah7, bl1);
    hi += Math.imul(ah7, bh1);
    lo += Math.imul(al6, bl2);
    mid += Math.imul(al6, bh2);
    mid += Math.imul(ah6, bl2);
    hi += Math.imul(ah6, bh2);
    lo += Math.imul(al5, bl3);
    mid += Math.imul(al5, bh3);
    mid += Math.imul(ah5, bl3);
    hi += Math.imul(ah5, bh3);
    lo += Math.imul(al4, bl4);
    mid += Math.imul(al4, bh4);
    mid += Math.imul(ah4, bl4);
    hi += Math.imul(ah4, bh4);
    lo += Math.imul(al3, bl5);
    mid += Math.imul(al3, bh5);
    mid += Math.imul(ah3, bl5);
    hi += Math.imul(ah3, bh5);
    lo += Math.imul(al2, bl6);
    mid += Math.imul(al2, bh6);
    mid += Math.imul(ah2, bl6);
    hi += Math.imul(ah2, bh6);
    lo += Math.imul(al1, bl7);
    mid += Math.imul(al1, bh7);
    mid += Math.imul(ah1, bl7);
    hi += Math.imul(ah1, bh7);
    lo += Math.imul(al0, bl8);
    mid += Math.imul(al0, bh8);
    mid += Math.imul(ah0, bl8);
    hi += Math.imul(ah0, bh8);
    var w8 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w8 >>> 26);
    w8 &= 0x3ffffff;
    /* k = 9 */
    lo = Math.imul(al9, bl0);
    mid = Math.imul(al9, bh0);
    mid += Math.imul(ah9, bl0);
    hi = Math.imul(ah9, bh0);
    lo += Math.imul(al8, bl1);
    mid += Math.imul(al8, bh1);
    mid += Math.imul(ah8, bl1);
    hi += Math.imul(ah8, bh1);
    lo += Math.imul(al7, bl2);
    mid += Math.imul(al7, bh2);
    mid += Math.imul(ah7, bl2);
    hi += Math.imul(ah7, bh2);
    lo += Math.imul(al6, bl3);
    mid += Math.imul(al6, bh3);
    mid += Math.imul(ah6, bl3);
    hi += Math.imul(ah6, bh3);
    lo += Math.imul(al5, bl4);
    mid += Math.imul(al5, bh4);
    mid += Math.imul(ah5, bl4);
    hi += Math.imul(ah5, bh4);
    lo += Math.imul(al4, bl5);
    mid += Math.imul(al4, bh5);
    mid += Math.imul(ah4, bl5);
    hi += Math.imul(ah4, bh5);
    lo += Math.imul(al3, bl6);
    mid += Math.imul(al3, bh6);
    mid += Math.imul(ah3, bl6);
    hi += Math.imul(ah3, bh6);
    lo += Math.imul(al2, bl7);
    mid += Math.imul(al2, bh7);
    mid += Math.imul(ah2, bl7);
    hi += Math.imul(ah2, bh7);
    lo += Math.imul(al1, bl8);
    mid += Math.imul(al1, bh8);
    mid += Math.imul(ah1, bl8);
    hi += Math.imul(ah1, bh8);
    lo += Math.imul(al0, bl9);
    mid += Math.imul(al0, bh9);
    mid += Math.imul(ah0, bl9);
    hi += Math.imul(ah0, bh9);
    var w9 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w9 >>> 26);
    w9 &= 0x3ffffff;
    /* k = 10 */
    lo = Math.imul(al9, bl1);
    mid = Math.imul(al9, bh1);
    mid += Math.imul(ah9, bl1);
    hi = Math.imul(ah9, bh1);
    lo += Math.imul(al8, bl2);
    mid += Math.imul(al8, bh2);
    mid += Math.imul(ah8, bl2);
    hi += Math.imul(ah8, bh2);
    lo += Math.imul(al7, bl3);
    mid += Math.imul(al7, bh3);
    mid += Math.imul(ah7, bl3);
    hi += Math.imul(ah7, bh3);
    lo += Math.imul(al6, bl4);
    mid += Math.imul(al6, bh4);
    mid += Math.imul(ah6, bl4);
    hi += Math.imul(ah6, bh4);
    lo += Math.imul(al5, bl5);
    mid += Math.imul(al5, bh5);
    mid += Math.imul(ah5, bl5);
    hi += Math.imul(ah5, bh5);
    lo += Math.imul(al4, bl6);
    mid += Math.imul(al4, bh6);
    mid += Math.imul(ah4, bl6);
    hi += Math.imul(ah4, bh6);
    lo += Math.imul(al3, bl7);
    mid += Math.imul(al3, bh7);
    mid += Math.imul(ah3, bl7);
    hi += Math.imul(ah3, bh7);
    lo += Math.imul(al2, bl8);
    mid += Math.imul(al2, bh8);
    mid += Math.imul(ah2, bl8);
    hi += Math.imul(ah2, bh8);
    lo += Math.imul(al1, bl9);
    mid += Math.imul(al1, bh9);
    mid += Math.imul(ah1, bl9);
    hi += Math.imul(ah1, bh9);
    var w10 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w10 >>> 26);
    w10 &= 0x3ffffff;
    /* k = 11 */
    lo = Math.imul(al9, bl2);
    mid = Math.imul(al9, bh2);
    mid += Math.imul(ah9, bl2);
    hi = Math.imul(ah9, bh2);
    lo += Math.imul(al8, bl3);
    mid += Math.imul(al8, bh3);
    mid += Math.imul(ah8, bl3);
    hi += Math.imul(ah8, bh3);
    lo += Math.imul(al7, bl4);
    mid += Math.imul(al7, bh4);
    mid += Math.imul(ah7, bl4);
    hi += Math.imul(ah7, bh4);
    lo += Math.imul(al6, bl5);
    mid += Math.imul(al6, bh5);
    mid += Math.imul(ah6, bl5);
    hi += Math.imul(ah6, bh5);
    lo += Math.imul(al5, bl6);
    mid += Math.imul(al5, bh6);
    mid += Math.imul(ah5, bl6);
    hi += Math.imul(ah5, bh6);
    lo += Math.imul(al4, bl7);
    mid += Math.imul(al4, bh7);
    mid += Math.imul(ah4, bl7);
    hi += Math.imul(ah4, bh7);
    lo += Math.imul(al3, bl8);
    mid += Math.imul(al3, bh8);
    mid += Math.imul(ah3, bl8);
    hi += Math.imul(ah3, bh8);
    lo += Math.imul(al2, bl9);
    mid += Math.imul(al2, bh9);
    mid += Math.imul(ah2, bl9);
    hi += Math.imul(ah2, bh9);
    var w11 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w11 >>> 26);
    w11 &= 0x3ffffff;
    /* k = 12 */
    lo = Math.imul(al9, bl3);
    mid = Math.imul(al9, bh3);
    mid += Math.imul(ah9, bl3);
    hi = Math.imul(ah9, bh3);
    lo += Math.imul(al8, bl4);
    mid += Math.imul(al8, bh4);
    mid += Math.imul(ah8, bl4);
    hi += Math.imul(ah8, bh4);
    lo += Math.imul(al7, bl5);
    mid += Math.imul(al7, bh5);
    mid += Math.imul(ah7, bl5);
    hi += Math.imul(ah7, bh5);
    lo += Math.imul(al6, bl6);
    mid += Math.imul(al6, bh6);
    mid += Math.imul(ah6, bl6);
    hi += Math.imul(ah6, bh6);
    lo += Math.imul(al5, bl7);
    mid += Math.imul(al5, bh7);
    mid += Math.imul(ah5, bl7);
    hi += Math.imul(ah5, bh7);
    lo += Math.imul(al4, bl8);
    mid += Math.imul(al4, bh8);
    mid += Math.imul(ah4, bl8);
    hi += Math.imul(ah4, bh8);
    lo += Math.imul(al3, bl9);
    mid += Math.imul(al3, bh9);
    mid += Math.imul(ah3, bl9);
    hi += Math.imul(ah3, bh9);
    var w12 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w12 >>> 26);
    w12 &= 0x3ffffff;
    /* k = 13 */
    lo = Math.imul(al9, bl4);
    mid = Math.imul(al9, bh4);
    mid += Math.imul(ah9, bl4);
    hi = Math.imul(ah9, bh4);
    lo += Math.imul(al8, bl5);
    mid += Math.imul(al8, bh5);
    mid += Math.imul(ah8, bl5);
    hi += Math.imul(ah8, bh5);
    lo += Math.imul(al7, bl6);
    mid += Math.imul(al7, bh6);
    mid += Math.imul(ah7, bl6);
    hi += Math.imul(ah7, bh6);
    lo += Math.imul(al6, bl7);
    mid += Math.imul(al6, bh7);
    mid += Math.imul(ah6, bl7);
    hi += Math.imul(ah6, bh7);
    lo += Math.imul(al5, bl8);
    mid += Math.imul(al5, bh8);
    mid += Math.imul(ah5, bl8);
    hi += Math.imul(ah5, bh8);
    lo += Math.imul(al4, bl9);
    mid += Math.imul(al4, bh9);
    mid += Math.imul(ah4, bl9);
    hi += Math.imul(ah4, bh9);
    var w13 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w13 >>> 26);
    w13 &= 0x3ffffff;
    /* k = 14 */
    lo = Math.imul(al9, bl5);
    mid = Math.imul(al9, bh5);
    mid += Math.imul(ah9, bl5);
    hi = Math.imul(ah9, bh5);
    lo += Math.imul(al8, bl6);
    mid += Math.imul(al8, bh6);
    mid += Math.imul(ah8, bl6);
    hi += Math.imul(ah8, bh6);
    lo += Math.imul(al7, bl7);
    mid += Math.imul(al7, bh7);
    mid += Math.imul(ah7, bl7);
    hi += Math.imul(ah7, bh7);
    lo += Math.imul(al6, bl8);
    mid += Math.imul(al6, bh8);
    mid += Math.imul(ah6, bl8);
    hi += Math.imul(ah6, bh8);
    lo += Math.imul(al5, bl9);
    mid += Math.imul(al5, bh9);
    mid += Math.imul(ah5, bl9);
    hi += Math.imul(ah5, bh9);
    var w14 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w14 >>> 26);
    w14 &= 0x3ffffff;
    /* k = 15 */
    lo = Math.imul(al9, bl6);
    mid = Math.imul(al9, bh6);
    mid += Math.imul(ah9, bl6);
    hi = Math.imul(ah9, bh6);
    lo += Math.imul(al8, bl7);
    mid += Math.imul(al8, bh7);
    mid += Math.imul(ah8, bl7);
    hi += Math.imul(ah8, bh7);
    lo += Math.imul(al7, bl8);
    mid += Math.imul(al7, bh8);
    mid += Math.imul(ah7, bl8);
    hi += Math.imul(ah7, bh8);
    lo += Math.imul(al6, bl9);
    mid += Math.imul(al6, bh9);
    mid += Math.imul(ah6, bl9);
    hi += Math.imul(ah6, bh9);
    var w15 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w15 >>> 26);
    w15 &= 0x3ffffff;
    /* k = 16 */
    lo = Math.imul(al9, bl7);
    mid = Math.imul(al9, bh7);
    mid += Math.imul(ah9, bl7);
    hi = Math.imul(ah9, bh7);
    lo += Math.imul(al8, bl8);
    mid += Math.imul(al8, bh8);
    mid += Math.imul(ah8, bl8);
    hi += Math.imul(ah8, bh8);
    lo += Math.imul(al7, bl9);
    mid += Math.imul(al7, bh9);
    mid += Math.imul(ah7, bl9);
    hi += Math.imul(ah7, bh9);
    var w16 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w16 >>> 26);
    w16 &= 0x3ffffff;
    /* k = 17 */
    lo = Math.imul(al9, bl8);
    mid = Math.imul(al9, bh8);
    mid += Math.imul(ah9, bl8);
    hi = Math.imul(ah9, bh8);
    lo += Math.imul(al8, bl9);
    mid += Math.imul(al8, bh9);
    mid += Math.imul(ah8, bl9);
    hi += Math.imul(ah8, bh9);
    var w17 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w17 >>> 26);
    w17 &= 0x3ffffff;
    /* k = 18 */
    lo = Math.imul(al9, bl9);
    mid = Math.imul(al9, bh9);
    mid += Math.imul(ah9, bl9);
    hi = Math.imul(ah9, bh9);
    var w18 = c + lo + ((mid & 0x1fff) << 13);
    c = hi + (mid >>> 13) + (w18 >>> 26);
    w18 &= 0x3ffffff;
    o[0] = w0;
    o[1] = w1;
    o[2] = w2;
    o[3] = w3;
    o[4] = w4;
    o[5] = w5;
    o[6] = w6;
    o[7] = w7;
    o[8] = w8;
    o[9] = w9;
    o[10] = w10;
    o[11] = w11;
    o[12] = w12;
    o[13] = w13;
    o[14] = w14;
    o[15] = w15;
    o[16] = w16;
    o[17] = w17;
    o[18] = w18;
    if (c !== 0) {
      o[19] = c;
      out.length++;
    }
    return out;
  };

  // Polyfill comb
  if (!Math.imul) {
    comb10MulTo = smallMulTo;
  }

  function bigMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    out.length = self.length + num.length;

    var carry = 0;
    var hncarry = 0;
    for (var k = 0; k < out.length - 1; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = hncarry;
      hncarry = 0;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = k - j;
        var a = self.words[i] | 0;
        var b = num.words[j] | 0;
        var r = a * b;

        var lo = r & 0x3ffffff;
        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
        lo = (lo + rword) | 0;
        rword = lo & 0x3ffffff;
        ncarry = (ncarry + (lo >>> 26)) | 0;

        hncarry += ncarry >>> 26;
        ncarry &= 0x3ffffff;
      }
      out.words[k] = rword;
      carry = ncarry;
      ncarry = hncarry;
    }
    if (carry !== 0) {
      out.words[k] = carry;
    } else {
      out.length--;
    }

    return out.strip();
  }

  function jumboMulTo (self, num, out) {
    var fftm = new FFTM();
    return fftm.mulp(self, num, out);
  }

  BN.prototype.mulTo = function mulTo (num, out) {
    var res;
    var len = this.length + num.length;
    if (this.length === 10 && num.length === 10) {
      res = comb10MulTo(this, num, out);
    } else if (len < 63) {
      res = smallMulTo(this, num, out);
    } else if (len < 1024) {
      res = bigMulTo(this, num, out);
    } else {
      res = jumboMulTo(this, num, out);
    }

    return res;
  };

  // Cooley-Tukey algorithm for FFT
  // slightly revisited to rely on looping instead of recursion

  function FFTM (x, y) {
    this.x = x;
    this.y = y;
  }

  FFTM.prototype.makeRBT = function makeRBT (N) {
    var t = new Array(N);
    var l = BN.prototype._countBits(N) - 1;
    for (var i = 0; i < N; i++) {
      t[i] = this.revBin(i, l, N);
    }

    return t;
  };

  // Returns binary-reversed representation of `x`
  FFTM.prototype.revBin = function revBin (x, l, N) {
    if (x === 0 || x === N - 1) return x;

    var rb = 0;
    for (var i = 0; i < l; i++) {
      rb |= (x & 1) << (l - i - 1);
      x >>= 1;
    }

    return rb;
  };

  // Performs "tweedling" phase, therefore 'emulating'
  // behaviour of the recursive algorithm
  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
    for (var i = 0; i < N; i++) {
      rtws[i] = rws[rbt[i]];
      itws[i] = iws[rbt[i]];
    }
  };

  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
    this.permute(rbt, rws, iws, rtws, itws, N);

    for (var s = 1; s < N; s <<= 1) {
      var l = s << 1;

      var rtwdf = Math.cos(2 * Math.PI / l);
      var itwdf = Math.sin(2 * Math.PI / l);

      for (var p = 0; p < N; p += l) {
        var rtwdf_ = rtwdf;
        var itwdf_ = itwdf;

        for (var j = 0; j < s; j++) {
          var re = rtws[p + j];
          var ie = itws[p + j];

          var ro = rtws[p + j + s];
          var io = itws[p + j + s];

          var rx = rtwdf_ * ro - itwdf_ * io;

          io = rtwdf_ * io + itwdf_ * ro;
          ro = rx;

          rtws[p + j] = re + ro;
          itws[p + j] = ie + io;

          rtws[p + j + s] = re - ro;
          itws[p + j + s] = ie - io;

          /* jshint maxdepth : false */
          if (j !== l) {
            rx = rtwdf * rtwdf_ - itwdf * itwdf_;

            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
            rtwdf_ = rx;
          }
        }
      }
    }
  };

  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
    var N = Math.max(m, n) | 1;
    var odd = N & 1;
    var i = 0;
    for (N = N / 2 | 0; N; N = N >>> 1) {
      i++;
    }

    return 1 << i + 1 + odd;
  };

  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
    if (N <= 1) return;

    for (var i = 0; i < N / 2; i++) {
      var t = rws[i];

      rws[i] = rws[N - i - 1];
      rws[N - i - 1] = t;

      t = iws[i];

      iws[i] = -iws[N - i - 1];
      iws[N - i - 1] = -t;
    }
  };

  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
    var carry = 0;
    for (var i = 0; i < N / 2; i++) {
      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
        Math.round(ws[2 * i] / N) +
        carry;

      ws[i] = w & 0x3ffffff;

      if (w < 0x4000000) {
        carry = 0;
      } else {
        carry = w / 0x4000000 | 0;
      }
    }

    return ws;
  };

  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
    var carry = 0;
    for (var i = 0; i < len; i++) {
      carry = carry + (ws[i] | 0);

      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
    }

    // Pad with zeroes
    for (i = 2 * len; i < N; ++i) {
      rws[i] = 0;
    }

    assert(carry === 0);
    assert((carry & ~0x1fff) === 0);
  };

  FFTM.prototype.stub = function stub (N) {
    var ph = new Array(N);
    for (var i = 0; i < N; i++) {
      ph[i] = 0;
    }

    return ph;
  };

  FFTM.prototype.mulp = function mulp (x, y, out) {
    var N = 2 * this.guessLen13b(x.length, y.length);

    var rbt = this.makeRBT(N);

    var _ = this.stub(N);

    var rws = new Array(N);
    var rwst = new Array(N);
    var iwst = new Array(N);

    var nrws = new Array(N);
    var nrwst = new Array(N);
    var niwst = new Array(N);

    var rmws = out.words;
    rmws.length = N;

    this.convert13b(x.words, x.length, rws, N);
    this.convert13b(y.words, y.length, nrws, N);

    this.transform(rws, _, rwst, iwst, N, rbt);
    this.transform(nrws, _, nrwst, niwst, N, rbt);

    for (var i = 0; i < N; i++) {
      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
      rwst[i] = rx;
    }

    this.conjugate(rwst, iwst, N);
    this.transform(rwst, iwst, rmws, _, N, rbt);
    this.conjugate(rmws, _, N);
    this.normalize13b(rmws, N);

    out.negative = x.negative ^ y.negative;
    out.length = x.length + y.length;
    return out.strip();
  };

  // Multiply `this` by `num`
  BN.prototype.mul = function mul (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return this.mulTo(num, out);
  };

  // Multiply employing FFT
  BN.prototype.mulf = function mulf (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return jumboMulTo(this, num, out);
  };

  // In-place Multiplication
  BN.prototype.imul = function imul (num) {
    return this.clone().mulTo(num, this);
  };

  BN.prototype.imuln = function imuln (num) {
    assert(typeof num === 'number');

    // Carry
    var carry = 0;
    for (var i = 0; i < this.length; i++) {
      var w = (this.words[i] | 0) * num;
      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
      carry >>= 26;
      carry += (w / 0x4000000) | 0;
      // NOTE: lo is 27bit maximum
      carry += lo >>> 26;
      this.words[i] = lo & 0x3ffffff;
    }

    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }

    return this;
  };

  BN.prototype.muln = function muln (num) {
    return this.clone().imuln(num);
  };

  // `this` * `this`
  BN.prototype.sqr = function sqr () {
    return this.mul(this);
  };

  // `this` * `this` in-place
  BN.prototype.isqr = function isqr () {
    return this.imul(this.clone());
  };

  // Math.pow(`this`, `num`)
  BN.prototype.pow = function pow (num) {
    var w = toBitArray(num);
    if (w.length === 0) return new BN(1);

    // Skip leading zeroes
    var res = this;
    for (var i = 0; i < w.length; i++, res = res.sqr()) {
      if (w[i] !== 0) break;
    }

    if (++i < w.length) {
      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
        if (w[i] === 0) continue;

        res = res.mul(q);
      }
    }

    return res;
  };

  // Shift-left in-place
  BN.prototype.iushln = function iushln (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;
    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
    var i;

    if (r !== 0) {
      var carry = 0;

      for (i = 0; i < this.length; i++) {
        var newCarry = this.words[i] & carryMask;
        var c = ((this.words[i] | 0) - newCarry) << r;
        this.words[i] = c | carry;
        carry = newCarry >>> (26 - r);
      }

      if (carry) {
        this.words[i] = carry;
        this.length++;
      }
    }

    if (s !== 0) {
      for (i = this.length - 1; i >= 0; i--) {
        this.words[i + s] = this.words[i];
      }

      for (i = 0; i < s; i++) {
        this.words[i] = 0;
      }

      this.length += s;
    }

    return this.strip();
  };

  BN.prototype.ishln = function ishln (bits) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushln(bits);
  };

  // Shift-right in-place
  // NOTE: `hint` is a lowest bit before trailing zeroes
  // NOTE: if `extended` is present - it will be filled with destroyed bits
  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
    assert(typeof bits === 'number' && bits >= 0);
    var h;
    if (hint) {
      h = (hint - (hint % 26)) / 26;
    } else {
      h = 0;
    }

    var r = bits % 26;
    var s = Math.min((bits - r) / 26, this.length);
    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
    var maskedWords = extended;

    h -= s;
    h = Math.max(0, h);

    // Extended mode, copy masked part
    if (maskedWords) {
      for (var i = 0; i < s; i++) {
        maskedWords.words[i] = this.words[i];
      }
      maskedWords.length = s;
    }

    if (s === 0) {
      // No-op, we should not move anything at all
    } else if (this.length > s) {
      this.length -= s;
      for (i = 0; i < this.length; i++) {
        this.words[i] = this.words[i + s];
      }
    } else {
      this.words[0] = 0;
      this.length = 1;
    }

    var carry = 0;
    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
      var word = this.words[i] | 0;
      this.words[i] = (carry << (26 - r)) | (word >>> r);
      carry = word & mask;
    }

    // Push carried bits as a mask
    if (maskedWords && carry !== 0) {
      maskedWords.words[maskedWords.length++] = carry;
    }

    if (this.length === 0) {
      this.words[0] = 0;
      this.length = 1;
    }

    return this.strip();
  };

  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushrn(bits, hint, extended);
  };

  // Shift-left
  BN.prototype.shln = function shln (bits) {
    return this.clone().ishln(bits);
  };

  BN.prototype.ushln = function ushln (bits) {
    return this.clone().iushln(bits);
  };

  // Shift-right
  BN.prototype.shrn = function shrn (bits) {
    return this.clone().ishrn(bits);
  };

  BN.prototype.ushrn = function ushrn (bits) {
    return this.clone().iushrn(bits);
  };

  // Test if n bit is set
  BN.prototype.testn = function testn (bit) {
    assert(typeof bit === 'number' && bit >= 0);
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) return false;

    // Check bit and return
    var w = this.words[s];

    return !!(w & q);
  };

  // Return only lowers bits of number (in-place)
  BN.prototype.imaskn = function imaskn (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;

    assert(this.negative === 0, 'imaskn works only with positive numbers');

    if (r !== 0) {
      s++;
    }
    this.length = Math.min(s, this.length);

    if (r !== 0) {
      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
      this.words[this.length - 1] &= mask;
    }

    return this.strip();
  };

  // Return only lowers bits of number
  BN.prototype.maskn = function maskn (bits) {
    return this.clone().imaskn(bits);
  };

  // Add plain number `num` to `this`
  BN.prototype.iaddn = function iaddn (num) {
    assert(typeof num === 'number');
    if (num < 0) return this.isubn(-num);

    // Possible sign change
    if (this.negative !== 0) {
      if (this.length === 1 && (this.words[0] | 0) < num) {
        this.words[0] = num - (this.words[0] | 0);
        this.negative = 0;
        return this;
      }

      this.negative = 0;
      this.isubn(num);
      this.negative = 1;
      return this;
    }

    // Add without checks
    return this._iaddn(num);
  };

  BN.prototype._iaddn = function _iaddn (num) {
    this.words[0] += num;

    // Carry
    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
      this.words[i] -= 0x4000000;
      if (i === this.length - 1) {
        this.words[i + 1] = 1;
      } else {
        this.words[i + 1]++;
      }
    }
    this.length = Math.max(this.length, i + 1);

    return this;
  };

  // Subtract plain number `num` from `this`
  BN.prototype.isubn = function isubn (num) {
    assert(typeof num === 'number');
    if (num < 0) return this.iaddn(-num);

    if (this.negative !== 0) {
      this.negative = 0;
      this.iaddn(num);
      this.negative = 1;
      return this;
    }

    this.words[0] -= num;

    if (this.length === 1 && this.words[0] < 0) {
      this.words[0] = -this.words[0];
      this.negative = 1;
    } else {
      // Carry
      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
        this.words[i] += 0x4000000;
        this.words[i + 1] -= 1;
      }
    }

    return this.strip();
  };

  BN.prototype.addn = function addn (num) {
    return this.clone().iaddn(num);
  };

  BN.prototype.subn = function subn (num) {
    return this.clone().isubn(num);
  };

  BN.prototype.iabs = function iabs () {
    this.negative = 0;

    return this;
  };

  BN.prototype.abs = function abs () {
    return this.clone().iabs();
  };

  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
    // Bigger storage is needed
    var len = num.length + shift;
    var i;
    if (this.words.length < len) {
      var t = new Array(len);
      for (i = 0; i < this.length; i++) {
        t[i] = this.words[i];
      }
      this.words = t;
    } else {
      i = this.length;
    }

    // Zeroify rest
    this.length = Math.max(this.length, len);
    for (; i < this.length; i++) {
      this.words[i] = 0;
    }

    var w;
    var carry = 0;
    for (i = 0; i < num.length; i++) {
      w = (this.words[i + shift] | 0) + carry;
      var right = (num.words[i] | 0) * mul;
      w -= right & 0x3ffffff;
      carry = (w >> 26) - ((right / 0x4000000) | 0);
      this.words[i + shift] = w & 0x3ffffff;
    }
    for (; i < this.length - shift; i++) {
      w = (this.words[i + shift] | 0) + carry;
      carry = w >> 26;
      this.words[i + shift] = w & 0x3ffffff;
    }

    if (carry === 0) return this.strip();

    // Subtraction overflow
    assert(carry === -1);
    carry = 0;
    for (i = 0; i < this.length; i++) {
      w = -(this.words[i] | 0) + carry;
      carry = w >> 26;
      this.words[i] = w & 0x3ffffff;
    }
    this.negative = 1;

    return this.strip();
  };

  BN.prototype._wordDiv = function _wordDiv (num, mode) {
    var shift = this.length - num.length;

    var a = this.clone();
    var b = num;

    // Normalize
    var bhi = b.words[b.length - 1] | 0;
    var bhiBits = this._countBits(bhi);
    shift = 26 - bhiBits;
    if (shift !== 0) {
      b = b.ushln(shift);
      a.iushln(shift);
      bhi = b.words[b.length - 1] | 0;
    }

    // Initialize quotient
    var m = a.length - b.length;
    var q;

    if (mode !== 'mod') {
      q = new BN(null);
      q.length = m + 1;
      q.words = new Array(q.length);
      for (var i = 0; i < q.length; i++) {
        q.words[i] = 0;
      }
    }

    var diff = a.clone()._ishlnsubmul(b, 1, m);
    if (diff.negative === 0) {
      a = diff;
      if (q) {
        q.words[m] = 1;
      }
    }

    for (var j = m - 1; j >= 0; j--) {
      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
        (a.words[b.length + j - 1] | 0);

      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
      // (0x7ffffff)
      qj = Math.min((qj / bhi) | 0, 0x3ffffff);

      a._ishlnsubmul(b, qj, j);
      while (a.negative !== 0) {
        qj--;
        a.negative = 0;
        a._ishlnsubmul(b, 1, j);
        if (!a.isZero()) {
          a.negative ^= 1;
        }
      }
      if (q) {
        q.words[j] = qj;
      }
    }
    if (q) {
      q.strip();
    }
    a.strip();

    // Denormalize
    if (mode !== 'div' && shift !== 0) {
      a.iushrn(shift);
    }

    return { div: q || null, mod: a };
  };

  BN.prototype.divmod = function divmod (num, mode, positive) {
    assert(!num.isZero());

    var div, mod, res;
    if (this.negative !== 0 && num.negative === 0) {
      res = this.neg().divmod(num, mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.iadd(num);
        }
      }

      return {
        div: div,
        mod: mod
      };
    }

    if (this.negative === 0 && num.negative !== 0) {
      res = this.divmod(num.neg(), mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      return { div: div, mod: res.mod };
    }

    if ((this.negative & num.negative) !== 0) {
      res = this.neg().divmod(num.neg(), mode);

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.isub(num);
        }
      }

      return {
        div: res.div,
        mod: mod
      };
    }

    // Both numbers are positive at this point

    // Strip both numbers to approximate shift value
    if (num.length > this.length || this.cmp(num) < 0) {
      return { div: new BN(0), mod: this };
    }

    // Very short reduction
    if (num.length === 1) {
      if (mode === 'div') {
        return { div: this.divn(num.words[0]), mod: null };
      }

      if (mode === 'mod') {
        return { div: null, mod: new BN(this.modn(num.words[0])) };
      }

      return {
        div: this.divn(num.words[0]),
        mod: new BN(this.modn(num.words[0]))
      };
    }

    return this._wordDiv(num, mode);
  };

  // Find `this` / `num`
  BN.prototype.div = function div (num) {
    return this.divmod(num, 'div', false).div;
  };

  // Find `this` % `num`
  BN.prototype.mod = function mod (num) {
    return this.divmod(num, 'mod', false).mod;
  };

  BN.prototype.umod = function umod (num) {
    return this.divmod(num, 'mod', true).mod;
  };

  // Find Round(`this` / `num`)
  BN.prototype.divRound = function divRound (num) {
    var dm = this.divmod(num);

    // Fast case - exact division
    if (dm.mod.isZero()) return dm.div;

    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;

    var half = num.ushrn(1);
    var r2 = num.andln(1);
    var cmp = mod.cmp(half);

    // Round down
    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;

    // Round up
    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
  };

  BN.prototype.modn = function modn (num) {
    assert(num <= 0x3ffffff);
    var p = (1 << 26) % num;

    var acc = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      acc = (p * acc + (this.words[i] | 0)) % num;
    }

    return acc;
  };

  // In-place division by number
  BN.prototype.idivn = function idivn (num) {
    assert(num <= 0x3ffffff);

    var carry = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var w = (this.words[i] | 0) + carry * 0x4000000;
      this.words[i] = (w / num) | 0;
      carry = w % num;
    }

    return this.strip();
  };

  BN.prototype.divn = function divn (num) {
    return this.clone().idivn(num);
  };

  BN.prototype.egcd = function egcd (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var x = this;
    var y = p.clone();

    if (x.negative !== 0) {
      x = x.umod(p);
    } else {
      x = x.clone();
    }

    // A * x + B * y = x
    var A = new BN(1);
    var B = new BN(0);

    // C * x + D * y = y
    var C = new BN(0);
    var D = new BN(1);

    var g = 0;

    while (x.isEven() && y.isEven()) {
      x.iushrn(1);
      y.iushrn(1);
      ++g;
    }

    var yp = y.clone();
    var xp = x.clone();

    while (!x.isZero()) {
      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        x.iushrn(i);
        while (i-- > 0) {
          if (A.isOdd() || B.isOdd()) {
            A.iadd(yp);
            B.isub(xp);
          }

          A.iushrn(1);
          B.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        y.iushrn(j);
        while (j-- > 0) {
          if (C.isOdd() || D.isOdd()) {
            C.iadd(yp);
            D.isub(xp);
          }

          C.iushrn(1);
          D.iushrn(1);
        }
      }

      if (x.cmp(y) >= 0) {
        x.isub(y);
        A.isub(C);
        B.isub(D);
      } else {
        y.isub(x);
        C.isub(A);
        D.isub(B);
      }
    }

    return {
      a: C,
      b: D,
      gcd: y.iushln(g)
    };
  };

  // This is reduced incarnation of the binary EEA
  // above, designated to invert members of the
  // _prime_ fields F(p) at a maximal speed
  BN.prototype._invmp = function _invmp (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var a = this;
    var b = p.clone();

    if (a.negative !== 0) {
      a = a.umod(p);
    } else {
      a = a.clone();
    }

    var x1 = new BN(1);
    var x2 = new BN(0);

    var delta = b.clone();

    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        a.iushrn(i);
        while (i-- > 0) {
          if (x1.isOdd()) {
            x1.iadd(delta);
          }

          x1.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        b.iushrn(j);
        while (j-- > 0) {
          if (x2.isOdd()) {
            x2.iadd(delta);
          }

          x2.iushrn(1);
        }
      }

      if (a.cmp(b) >= 0) {
        a.isub(b);
        x1.isub(x2);
      } else {
        b.isub(a);
        x2.isub(x1);
      }
    }

    var res;
    if (a.cmpn(1) === 0) {
      res = x1;
    } else {
      res = x2;
    }

    if (res.cmpn(0) < 0) {
      res.iadd(p);
    }

    return res;
  };

  BN.prototype.gcd = function gcd (num) {
    if (this.isZero()) return num.clone();
    if (num.isZero()) return this.clone();

    var a = this.clone();
    var b = num.clone();
    a.negative = 0;
    b.negative = 0;

    // Remove common factor of two
    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
      a.iushrn(1);
      b.iushrn(1);
    }

    do {
      while (a.isEven()) {
        a.iushrn(1);
      }
      while (b.isEven()) {
        b.iushrn(1);
      }

      var r = a.cmp(b);
      if (r < 0) {
        // Swap `a` and `b` to make `a` always bigger than `b`
        var t = a;
        a = b;
        b = t;
      } else if (r === 0 || b.cmpn(1) === 0) {
        break;
      }

      a.isub(b);
    } while (true);

    return b.iushln(shift);
  };

  // Invert number in the field F(num)
  BN.prototype.invm = function invm (num) {
    return this.egcd(num).a.umod(num);
  };

  BN.prototype.isEven = function isEven () {
    return (this.words[0] & 1) === 0;
  };

  BN.prototype.isOdd = function isOdd () {
    return (this.words[0] & 1) === 1;
  };

  // And first word and num
  BN.prototype.andln = function andln (num) {
    return this.words[0] & num;
  };

  // Increment at the bit position in-line
  BN.prototype.bincn = function bincn (bit) {
    assert(typeof bit === 'number');
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) {
      for (var i = this.length; i < s + 1; i++) {
        this.words[i] = 0;
      }
      this.words[s] |= q;
      this.length = s + 1;
      return this;
    }

    // Add bit and propagate, if needed
    var carry = q;
    for (i = s; carry !== 0 && i < this.length; i++) {
      var w = this.words[i] | 0;
      w += carry;
      carry = w >>> 26;
      w &= 0x3ffffff;
      this.words[i] = w;
    }
    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }
    return this;
  };

  BN.prototype.isZero = function isZero () {
    return this.length === 1 && this.words[0] === 0;
  };

  BN.prototype.cmpn = function cmpn (num) {
    var negative = num < 0;

    if (this.negative !== 0 && !negative) return -1;
    if (this.negative === 0 && negative) return 1;

    this.strip();

    var res;
    if (this.length > 1) {
      res = 1;
    } else {
      if (negative) {
        num = -num;
      }

      assert(num <= 0x3ffffff, 'Number is too big');

      var w = this.words[0] | 0;
      res = w === num ? 0 : w < num ? -1 : 1;
    }
    if (this.negative !== 0) {
      res = -res;
    }
    return res;
  };

  // Compare two numbers and return:
  // 1 - if `this` > `num`
  // 0 - if `this` == `num`
  // -1 - if `this` < `num`
  BN.prototype.cmp = function cmp (num) {
    if (this.negative !== 0 && num.negative === 0) return -1;
    if (this.negative === 0 && num.negative !== 0) return 1;

    var res = this.ucmp(num);
    if (this.negative !== 0) return -res;

    return res;
  };

  // Unsigned comparison
  BN.prototype.ucmp = function ucmp (num) {
    // At this point both numbers have the same sign
    if (this.length > num.length) return 1;
    if (this.length < num.length) return -1;

    var res = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var a = this.words[i] | 0;
      var b = num.words[i] | 0;

      if (a === b) continue;
      if (a < b) {
        res = -1;
      } else if (a > b) {
        res = 1;
      }
      break;
    }
    return res;
  };

  //
  // A reduce context, could be using montgomery or something better, depending
  // on the `m` itself.
  //
  BN.red = function red (num) {
    return new Red(num);
  };

  BN.prototype.toRed = function toRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    assert(this.negative === 0, 'red works only with positives');
    return ctx.convertTo(this)._forceRed(ctx);
  };

  BN.prototype.fromRed = function fromRed () {
    assert(this.red, 'fromRed works only with numbers in reduction context');
    return this.red.convertFrom(this);
  };

  BN.prototype._forceRed = function _forceRed (ctx) {
    this.red = ctx;
    return this;
  };

  BN.prototype.forceRed = function forceRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    return this._forceRed(ctx);
  };

  BN.prototype.redAdd = function redAdd (num) {
    assert(this.red, 'redAdd works only with red numbers');
    return this.red.add(this, num);
  };

  BN.prototype.redIAdd = function redIAdd (num) {
    assert(this.red, 'redIAdd works only with red numbers');
    return this.red.iadd(this, num);
  };

  BN.prototype.redSub = function redSub (num) {
    assert(this.red, 'redSub works only with red numbers');
    return this.red.sub(this, num);
  };

  BN.prototype.redISub = function redISub (num) {
    assert(this.red, 'redISub works only with red numbers');
    return this.red.isub(this, num);
  };

  BN.prototype.redShl = function redShl (num) {
    assert(this.red, 'redShl works only with red numbers');
    return this.red.ushl(this, num);
  };

  BN.prototype.redMul = function redMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.mul(this, num);
  };

  BN.prototype.redIMul = function redIMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.imul(this, num);
  };

  BN.prototype.redSqr = function redSqr () {
    assert(this.red, 'redSqr works only with red numbers');
    this.red._verify1(this);
    return this.red.sqr(this);
  };

  BN.prototype.redISqr = function redISqr () {
    assert(this.red, 'redISqr works only with red numbers');
    this.red._verify1(this);
    return this.red.isqr(this);
  };

  // Square root over p
  BN.prototype.redSqrt = function redSqrt () {
    assert(this.red, 'redSqrt works only with red numbers');
    this.red._verify1(this);
    return this.red.sqrt(this);
  };

  BN.prototype.redInvm = function redInvm () {
    assert(this.red, 'redInvm works only with red numbers');
    this.red._verify1(this);
    return this.red.invm(this);
  };

  // Return negative clone of `this` % `red modulo`
  BN.prototype.redNeg = function redNeg () {
    assert(this.red, 'redNeg works only with red numbers');
    this.red._verify1(this);
    return this.red.neg(this);
  };

  BN.prototype.redPow = function redPow (num) {
    assert(this.red && !num.red, 'redPow(normalNum)');
    this.red._verify1(this);
    return this.red.pow(this, num);
  };

  // Prime numbers with efficient reduction
  var primes = {
    k256: null,
    p224: null,
    p192: null,
    p25519: null
  };

  // Pseudo-Mersenne prime
  function MPrime (name, p) {
    // P = 2 ^ N - K
    this.name = name;
    this.p = new BN(p, 16);
    this.n = this.p.bitLength();
    this.k = new BN(1).iushln(this.n).isub(this.p);

    this.tmp = this._tmp();
  }

  MPrime.prototype._tmp = function _tmp () {
    var tmp = new BN(null);
    tmp.words = new Array(Math.ceil(this.n / 13));
    return tmp;
  };

  MPrime.prototype.ireduce = function ireduce (num) {
    // Assumes that `num` is less than `P^2`
    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
    var r = num;
    var rlen;

    do {
      this.split(r, this.tmp);
      r = this.imulK(r);
      r = r.iadd(this.tmp);
      rlen = r.bitLength();
    } while (rlen > this.n);

    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
    if (cmp === 0) {
      r.words[0] = 0;
      r.length = 1;
    } else if (cmp > 0) {
      r.isub(this.p);
    } else {
      r.strip();
    }

    return r;
  };

  MPrime.prototype.split = function split (input, out) {
    input.iushrn(this.n, 0, out);
  };

  MPrime.prototype.imulK = function imulK (num) {
    return num.imul(this.k);
  };

  function K256 () {
    MPrime.call(
      this,
      'k256',
      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
  }
  inherits(K256, MPrime);

  K256.prototype.split = function split (input, output) {
    // 256 = 9 * 26 + 22
    var mask = 0x3fffff;

    var outLen = Math.min(input.length, 9);
    for (var i = 0; i < outLen; i++) {
      output.words[i] = input.words[i];
    }
    output.length = outLen;

    if (input.length <= 9) {
      input.words[0] = 0;
      input.length = 1;
      return;
    }

    // Shift by 9 limbs
    var prev = input.words[9];
    output.words[output.length++] = prev & mask;

    for (i = 10; i < input.length; i++) {
      var next = input.words[i] | 0;
      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
      prev = next;
    }
    input.words[i - 10] = prev >>> 22;
    input.length -= 9;
  };

  K256.prototype.imulK = function imulK (num) {
    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
    num.words[num.length] = 0;
    num.words[num.length + 1] = 0;
    num.length += 2;

    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
    var lo = 0;
    for (var i = 0; i < num.length; i++) {
      var w = num.words[i] | 0;
      lo += w * 0x3d1;
      num.words[i] = lo & 0x3ffffff;
      lo = w * 0x40 + ((lo / 0x4000000) | 0);
    }

    // Fast length reduction
    if (num.words[num.length - 1] === 0) {
      num.length--;
      if (num.words[num.length - 1] === 0) {
        num.length--;
      }
    }
    return num;
  };

  function P224 () {
    MPrime.call(
      this,
      'p224',
      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
  }
  inherits(P224, MPrime);

  function P192 () {
    MPrime.call(
      this,
      'p192',
      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
  }
  inherits(P192, MPrime);

  function P25519 () {
    // 2 ^ 255 - 19
    MPrime.call(
      this,
      '25519',
      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
  }
  inherits(P25519, MPrime);

  P25519.prototype.imulK = function imulK (num) {
    // K = 0x13
    var carry = 0;
    for (var i = 0; i < num.length; i++) {
      var hi = (num.words[i] | 0) * 0x13 + carry;
      var lo = hi & 0x3ffffff;
      hi >>>= 26;

      num.words[i] = lo;
      carry = hi;
    }
    if (carry !== 0) {
      num.words[num.length++] = carry;
    }
    return num;
  };

  // Exported mostly for testing purposes, use plain name instead
  BN._prime = function prime (name) {
    // Cached version of prime
    if (primes[name]) return primes[name];

    var prime;
    if (name === 'k256') {
      prime = new K256();
    } else if (name === 'p224') {
      prime = new P224();
    } else if (name === 'p192') {
      prime = new P192();
    } else if (name === 'p25519') {
      prime = new P25519();
    } else {
      throw new Error('Unknown prime ' + name);
    }
    primes[name] = prime;

    return prime;
  };

  //
  // Base reduction engine
  //
  function Red (m) {
    if (typeof m === 'string') {
      var prime = BN._prime(m);
      this.m = prime.p;
      this.prime = prime;
    } else {
      this.m = m;
      this.prime = null;
    }
  }

  Red.prototype._verify1 = function _verify1 (a) {
    assert(a.negative === 0, 'red works only with positives');
    assert(a.red, 'red works only with red numbers');
  };

  Red.prototype._verify2 = function _verify2 (a, b) {
    assert((a.negative | b.negative) === 0, 'red works only with positives');
    assert(a.red && a.red === b.red,
      'red works only with red numbers');
  };

  Red.prototype.imod = function imod (a) {
    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
    return a.umod(this.m)._forceRed(this);
  };

  Red.prototype.neg = function neg (a) {
    if (a.isZero()) {
      return a.clone();
    }

    return this.m.sub(a)._forceRed(this);
  };

  Red.prototype.add = function add (a, b) {
    this._verify2(a, b);

    var res = a.add(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.iadd = function iadd (a, b) {
    this._verify2(a, b);

    var res = a.iadd(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res;
  };

  Red.prototype.sub = function sub (a, b) {
    this._verify2(a, b);

    var res = a.sub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.isub = function isub (a, b) {
    this._verify2(a, b);

    var res = a.isub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res;
  };

  Red.prototype.shl = function shl (a, num) {
    this._verify1(a);
    return this.imod(a.ushln(num));
  };

  Red.prototype.imul = function imul (a, b) {
    this._verify2(a, b);
    return this.imod(a.imul(b));
  };

  Red.prototype.mul = function mul (a, b) {
    this._verify2(a, b);
    return this.imod(a.mul(b));
  };

  Red.prototype.isqr = function isqr (a) {
    return this.imul(a, a.clone());
  };

  Red.prototype.sqr = function sqr (a) {
    return this.mul(a, a);
  };

  Red.prototype.sqrt = function sqrt (a) {
    if (a.isZero()) return a.clone();

    var mod3 = this.m.andln(3);
    assert(mod3 % 2 === 1);

    // Fast case
    if (mod3 === 3) {
      var pow = this.m.add(new BN(1)).iushrn(2);
      return this.pow(a, pow);
    }

    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
    //
    // Find Q and S, that Q * 2 ^ S = (P - 1)
    var q = this.m.subn(1);
    var s = 0;
    while (!q.isZero() && q.andln(1) === 0) {
      s++;
      q.iushrn(1);
    }
    assert(!q.isZero());

    var one = new BN(1).toRed(this);
    var nOne = one.redNeg();

    // Find quadratic non-residue
    // NOTE: Max is such because of generalized Riemann hypothesis.
    var lpow = this.m.subn(1).iushrn(1);
    var z = this.m.bitLength();
    z = new BN(2 * z * z).toRed(this);

    while (this.pow(z, lpow).cmp(nOne) !== 0) {
      z.redIAdd(nOne);
    }

    var c = this.pow(z, q);
    var r = this.pow(a, q.addn(1).iushrn(1));
    var t = this.pow(a, q);
    var m = s;
    while (t.cmp(one) !== 0) {
      var tmp = t;
      for (var i = 0; tmp.cmp(one) !== 0; i++) {
        tmp = tmp.redSqr();
      }
      assert(i < m);
      var b = this.pow(c, new BN(1).iushln(m - i - 1));

      r = r.redMul(b);
      c = b.redSqr();
      t = t.redMul(c);
      m = i;
    }

    return r;
  };

  Red.prototype.invm = function invm (a) {
    var inv = a._invmp(this.m);
    if (inv.negative !== 0) {
      inv.negative = 0;
      return this.imod(inv).redNeg();
    } else {
      return this.imod(inv);
    }
  };

  Red.prototype.pow = function pow (a, num) {
    if (num.isZero()) return new BN(1);
    if (num.cmpn(1) === 0) return a.clone();

    var windowSize = 4;
    var wnd = new Array(1 << windowSize);
    wnd[0] = new BN(1).toRed(this);
    wnd[1] = a;
    for (var i = 2; i < wnd.length; i++) {
      wnd[i] = this.mul(wnd[i - 1], a);
    }

    var res = wnd[0];
    var current = 0;
    var currentLen = 0;
    var start = num.bitLength() % 26;
    if (start === 0) {
      start = 26;
    }

    for (i = num.length - 1; i >= 0; i--) {
      var word = num.words[i];
      for (var j = start - 1; j >= 0; j--) {
        var bit = (word >> j) & 1;
        if (res !== wnd[0]) {
          res = this.sqr(res);
        }

        if (bit === 0 && current === 0) {
          currentLen = 0;
          continue;
        }

        current <<= 1;
        current |= bit;
        currentLen++;
        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;

        res = this.mul(res, wnd[current]);
        currentLen = 0;
        current = 0;
      }
      start = 26;
    }

    return res;
  };

  Red.prototype.convertTo = function convertTo (num) {
    var r = num.umod(this.m);

    return r === num ? r.clone() : r;
  };

  Red.prototype.convertFrom = function convertFrom (num) {
    var res = num.clone();
    res.red = null;
    return res;
  };

  //
  // Montgomery method engine
  //

  BN.mont = function mont (num) {
    return new Mont(num);
  };

  function Mont (m) {
    Red.call(this, m);

    this.shift = this.m.bitLength();
    if (this.shift % 26 !== 0) {
      this.shift += 26 - (this.shift % 26);
    }

    this.r = new BN(1).iushln(this.shift);
    this.r2 = this.imod(this.r.sqr());
    this.rinv = this.r._invmp(this.m);

    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
    this.minv = this.minv.umod(this.r);
    this.minv = this.r.sub(this.minv);
  }
  inherits(Mont, Red);

  Mont.prototype.convertTo = function convertTo (num) {
    return this.imod(num.ushln(this.shift));
  };

  Mont.prototype.convertFrom = function convertFrom (num) {
    var r = this.imod(num.mul(this.rinv));
    r.red = null;
    return r;
  };

  Mont.prototype.imul = function imul (a, b) {
    if (a.isZero() || b.isZero()) {
      a.words[0] = 0;
      a.length = 1;
      return a;
    }

    var t = a.imul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;

    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.mul = function mul (a, b) {
    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);

    var t = a.mul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;
    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.invm = function invm (a) {
    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
    var res = this.imod(a._invmp(this.m).mul(this.r2));
    return res._forceRed(this);
  };
})(typeof module === 'undefined' || module, this);

},{}],217:[function(require,module,exports){
(function (Buffer){
var bn = require('bn.js');
var randomBytes = require('randombytes');
module.exports = crt;
function blind(priv) {
  var r = getr(priv);
  var blinder = r.toRed(bn.mont(priv.modulus))
  .redPow(new bn(priv.publicExponent)).fromRed();
  return {
    blinder: blinder,
    unblinder:r.invm(priv.modulus)
  };
}
function crt(msg, priv) {
  var blinds = blind(priv);
  var len = priv.modulus.byteLength();
  var mod = bn.mont(priv.modulus);
  var blinded = new bn(msg).mul(blinds.blinder).umod(priv.modulus);
  var c1 = blinded.toRed(bn.mont(priv.prime1));
  var c2 = blinded.toRed(bn.mont(priv.prime2));
  var qinv = priv.coefficient;
  var p = priv.prime1;
  var q = priv.prime2;
  var m1 = c1.redPow(priv.exponent1);
  var m2 = c2.redPow(priv.exponent2);
  m1 = m1.fromRed();
  m2 = m2.fromRed();
  var h = m1.isub(m2).imul(qinv).umod(p);
  h.imul(q);
  m2.iadd(h);
  return new Buffer(m2.imul(blinds.unblinder).umod(priv.modulus).toArray(false, len));
}
crt.getr = getr;
function getr(priv) {
  var len = priv.modulus.byteLength();
  var r = new bn(randomBytes(len));
  while (r.cmp(priv.modulus) >=  0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)) {
    r = new bn(randomBytes(len));
  }
  return r;
}

}).call(this,require("buffer").Buffer)
},{"bn.js":216,"buffer":177,"randombytes":374}],218:[function(require,module,exports){
'use strict';

var elliptic = exports;

elliptic.version = require('../package.json').version;
elliptic.utils = require('./elliptic/utils');
elliptic.rand = require('brorand');
elliptic.hmacDRBG = require('./elliptic/hmac-drbg');
elliptic.curve = require('./elliptic/curve');
elliptic.curves = require('./elliptic/curves');

// Protocols
elliptic.ec = require('./elliptic/ec');
elliptic.eddsa = require('./elliptic/eddsa');

},{"../package.json":241,"./elliptic/curve":221,"./elliptic/curves":224,"./elliptic/ec":225,"./elliptic/eddsa":228,"./elliptic/hmac-drbg":231,"./elliptic/utils":233,"brorand":234}],219:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var elliptic = require('../../elliptic');
var utils = elliptic.utils;
var getNAF = utils.getNAF;
var getJSF = utils.getJSF;
var assert = utils.assert;

function BaseCurve(type, conf) {
  this.type = type;
  this.p = new BN(conf.p, 16);

  // Use Montgomery, when there is no fast reduction for the prime
  this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p);

  // Useful for many curves
  this.zero = new BN(0).toRed(this.red);
  this.one = new BN(1).toRed(this.red);
  this.two = new BN(2).toRed(this.red);

  // Curve configuration, optional
  this.n = conf.n && new BN(conf.n, 16);
  this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed);

  // Temporary arrays
  this._wnafT1 = new Array(4);
  this._wnafT2 = new Array(4);
  this._wnafT3 = new Array(4);
  this._wnafT4 = new Array(4);
}
module.exports = BaseCurve;

BaseCurve.prototype.point = function point() {
  throw new Error('Not implemented');
};

BaseCurve.prototype.validate = function validate() {
  throw new Error('Not implemented');
};

BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) {
  assert(p.precomputed);
  var doubles = p._getDoubles();

  var naf = getNAF(k, 1);
  var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1);
  I /= 3;

  // Translate into more windowed form
  var repr = [];
  for (var j = 0; j < naf.length; j += doubles.step) {
    var nafW = 0;
    for (var k = j + doubles.step - 1; k >= j; k--)
      nafW = (nafW << 1) + naf[k];
    repr.push(nafW);
  }

  var a = this.jpoint(null, null, null);
  var b = this.jpoint(null, null, null);
  for (var i = I; i > 0; i--) {
    for (var j = 0; j < repr.length; j++) {
      var nafW = repr[j];
      if (nafW === i)
        b = b.mixedAdd(doubles.points[j]);
      else if (nafW === -i)
        b = b.mixedAdd(doubles.points[j].neg());
    }
    a = a.add(b);
  }
  return a.toP();
};

BaseCurve.prototype._wnafMul = function _wnafMul(p, k) {
  var w = 4;

  // Precompute window
  var nafPoints = p._getNAFPoints(w);
  w = nafPoints.wnd;
  var wnd = nafPoints.points;

  // Get NAF form
  var naf = getNAF(k, w);

  // Add `this`*(N+1) for every w-NAF index
  var acc = this.jpoint(null, null, null);
  for (var i = naf.length - 1; i >= 0; i--) {
    // Count zeroes
    for (var k = 0; i >= 0 && naf[i] === 0; i--)
      k++;
    if (i >= 0)
      k++;
    acc = acc.dblp(k);

    if (i < 0)
      break;
    var z = naf[i];
    assert(z !== 0);
    if (p.type === 'affine') {
      // J +- P
      if (z > 0)
        acc = acc.mixedAdd(wnd[(z - 1) >> 1]);
      else
        acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg());
    } else {
      // J +- J
      if (z > 0)
        acc = acc.add(wnd[(z - 1) >> 1]);
      else
        acc = acc.add(wnd[(-z - 1) >> 1].neg());
    }
  }
  return p.type === 'affine' ? acc.toP() : acc;
};

BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW,
                                                       points,
                                                       coeffs,
                                                       len) {
  var wndWidth = this._wnafT1;
  var wnd = this._wnafT2;
  var naf = this._wnafT3;

  // Fill all arrays
  var max = 0;
  for (var i = 0; i < len; i++) {
    var p = points[i];
    var nafPoints = p._getNAFPoints(defW);
    wndWidth[i] = nafPoints.wnd;
    wnd[i] = nafPoints.points;
  }

  // Comb small window NAFs
  for (var i = len - 1; i >= 1; i -= 2) {
    var a = i - 1;
    var b = i;
    if (wndWidth[a] !== 1 || wndWidth[b] !== 1) {
      naf[a] = getNAF(coeffs[a], wndWidth[a]);
      naf[b] = getNAF(coeffs[b], wndWidth[b]);
      max = Math.max(naf[a].length, max);
      max = Math.max(naf[b].length, max);
      continue;
    }

    var comb = [
      points[a], /* 1 */
      null, /* 3 */
      null, /* 5 */
      points[b] /* 7 */
    ];

    // Try to avoid Projective points, if possible
    if (points[a].y.cmp(points[b].y) === 0) {
      comb[1] = points[a].add(points[b]);
      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
    } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) {
      comb[1] = points[a].toJ().mixedAdd(points[b]);
      comb[2] = points[a].add(points[b].neg());
    } else {
      comb[1] = points[a].toJ().mixedAdd(points[b]);
      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
    }

    var index = [
      -3, /* -1 -1 */
      -1, /* -1 0 */
      -5, /* -1 1 */
      -7, /* 0 -1 */
      0, /* 0 0 */
      7, /* 0 1 */
      5, /* 1 -1 */
      1, /* 1 0 */
      3  /* 1 1 */
    ];

    var jsf = getJSF(coeffs[a], coeffs[b]);
    max = Math.max(jsf[0].length, max);
    naf[a] = new Array(max);
    naf[b] = new Array(max);
    for (var j = 0; j < max; j++) {
      var ja = jsf[0][j] | 0;
      var jb = jsf[1][j] | 0;

      naf[a][j] = index[(ja + 1) * 3 + (jb + 1)];
      naf[b][j] = 0;
      wnd[a] = comb;
    }
  }

  var acc = this.jpoint(null, null, null);
  var tmp = this._wnafT4;
  for (var i = max; i >= 0; i--) {
    var k = 0;

    while (i >= 0) {
      var zero = true;
      for (var j = 0; j < len; j++) {
        tmp[j] = naf[j][i] | 0;
        if (tmp[j] !== 0)
          zero = false;
      }
      if (!zero)
        break;
      k++;
      i--;
    }
    if (i >= 0)
      k++;
    acc = acc.dblp(k);
    if (i < 0)
      break;

    for (var j = 0; j < len; j++) {
      var z = tmp[j];
      var p;
      if (z === 0)
        continue;
      else if (z > 0)
        p = wnd[j][(z - 1) >> 1];
      else if (z < 0)
        p = wnd[j][(-z - 1) >> 1].neg();

      if (p.type === 'affine')
        acc = acc.mixedAdd(p);
      else
        acc = acc.add(p);
    }
  }
  // Zeroify references
  for (var i = 0; i < len; i++)
    wnd[i] = null;
  return acc.toP();
};

function BasePoint(curve, type) {
  this.curve = curve;
  this.type = type;
  this.precomputed = null;
}
BaseCurve.BasePoint = BasePoint;

BasePoint.prototype.eq = function eq(/*other*/) {
  throw new Error('Not implemented');
};

BasePoint.prototype.validate = function validate() {
  return this.curve.validate(this);
};

BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
  bytes = utils.toArray(bytes, enc);

  var len = this.p.byteLength();
  if (bytes[0] === 0x04 && bytes.length - 1 === 2 * len) {
    return this.point(bytes.slice(1, 1 + len),
                      bytes.slice(1 + len, 1 + 2 * len));
  } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) &&
              bytes.length - 1 === len) {
    return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03);
  }
  throw new Error('Unknown point format');
};

BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) {
  return this.encode(enc, true);
};

BasePoint.prototype._encode = function _encode(compact) {
  var len = this.curve.p.byteLength();
  var x = this.getX().toArray('be', len);

  if (compact)
    return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x);

  return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ;
};

BasePoint.prototype.encode = function encode(enc, compact) {
  return utils.encode(this._encode(compact), enc);
};

BasePoint.prototype.precompute = function precompute(power) {
  if (this.precomputed)
    return this;

  var precomputed = {
    doubles: null,
    naf: null,
    beta: null
  };
  precomputed.naf = this._getNAFPoints(8);
  precomputed.doubles = this._getDoubles(4, power);
  precomputed.beta = this._getBeta();
  this.precomputed = precomputed;

  return this;
};

BasePoint.prototype._hasDoubles = function _hasDoubles(k) {
  if (!this.precomputed)
    return false;

  var doubles = this.precomputed.doubles;
  if (!doubles)
    return false;

  return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step);
};

BasePoint.prototype._getDoubles = function _getDoubles(step, power) {
  if (this.precomputed && this.precomputed.doubles)
    return this.precomputed.doubles;

  var doubles = [ this ];
  var acc = this;
  for (var i = 0; i < power; i += step) {
    for (var j = 0; j < step; j++)
      acc = acc.dbl();
    doubles.push(acc);
  }
  return {
    step: step,
    points: doubles
  };
};

BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) {
  if (this.precomputed && this.precomputed.naf)
    return this.precomputed.naf;

  var res = [ this ];
  var max = (1 << wnd) - 1;
  var dbl = max === 1 ? null : this.dbl();
  for (var i = 1; i < max; i++)
    res[i] = res[i - 1].add(dbl);
  return {
    wnd: wnd,
    points: res
  };
};

BasePoint.prototype._getBeta = function _getBeta() {
  return null;
};

BasePoint.prototype.dblp = function dblp(k) {
  var r = this;
  for (var i = 0; i < k; i++)
    r = r.dbl();
  return r;
};

},{"../../elliptic":218,"bn.js":216}],220:[function(require,module,exports){
'use strict';

var curve = require('../curve');
var elliptic = require('../../elliptic');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = curve.base;

var assert = elliptic.utils.assert;

function EdwardsCurve(conf) {
  // NOTE: Important as we are creating point in Base.call()
  this.twisted = (conf.a | 0) !== 1;
  this.mOneA = this.twisted && (conf.a | 0) === -1;
  this.extended = this.mOneA;

  Base.call(this, 'edwards', conf);

  this.a = new BN(conf.a, 16).umod(this.red.m);
  this.a = this.a.toRed(this.red);
  this.c = new BN(conf.c, 16).toRed(this.red);
  this.c2 = this.c.redSqr();
  this.d = new BN(conf.d, 16).toRed(this.red);
  this.dd = this.d.redAdd(this.d);

  assert(!this.twisted || this.c.fromRed().cmpn(1) === 0);
  this.oneC = (conf.c | 0) === 1;
}
inherits(EdwardsCurve, Base);
module.exports = EdwardsCurve;

EdwardsCurve.prototype._mulA = function _mulA(num) {
  if (this.mOneA)
    return num.redNeg();
  else
    return this.a.redMul(num);
};

EdwardsCurve.prototype._mulC = function _mulC(num) {
  if (this.oneC)
    return num;
  else
    return this.c.redMul(num);
};

// Just for compatibility with Short curve
EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) {
  return this.point(x, y, z, t);
};

EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) {
  x = new BN(x, 16);
  if (!x.red)
    x = x.toRed(this.red);

  var x2 = x.redSqr();
  var rhs = this.c2.redSub(this.a.redMul(x2));
  var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2));

  var y = rhs.redMul(lhs.redInvm()).redSqrt();
  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y);
};

EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) {
  y = new BN(y, 16);
  if (!y.red)
    y = y.toRed(this.red);

  // x^2 = (y^2 - 1) / (d y^2 + 1)
  var y2 = y.redSqr();
  var lhs = y2.redSub(this.one);
  var rhs = y2.redMul(this.d).redAdd(this.one);
  var x2 = lhs.redMul(rhs.redInvm());

  if (x2.cmp(this.zero) === 0) {
    if (odd)
      throw new Error('invalid point');
    else
      return this.point(this.zero, y);
  }

  var x = x2.redSqrt();
  if (x.redSqr().redSub(x2).cmp(this.zero) !== 0)
    throw new Error('invalid point');

  if (x.isOdd() !== odd)
    x = x.redNeg();

  return this.point(x, y);
};

EdwardsCurve.prototype.validate = function validate(point) {
  if (point.isInfinity())
    return true;

  // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2)
  point.normalize();

  var x2 = point.x.redSqr();
  var y2 = point.y.redSqr();
  var lhs = x2.redMul(this.a).redAdd(y2);
  var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2)));

  return lhs.cmp(rhs) === 0;
};

function Point(curve, x, y, z, t) {
  Base.BasePoint.call(this, curve, 'projective');
  if (x === null && y === null && z === null) {
    this.x = this.curve.zero;
    this.y = this.curve.one;
    this.z = this.curve.one;
    this.t = this.curve.zero;
    this.zOne = true;
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    this.z = z ? new BN(z, 16) : this.curve.one;
    this.t = t && new BN(t, 16);
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.y.red)
      this.y = this.y.toRed(this.curve.red);
    if (!this.z.red)
      this.z = this.z.toRed(this.curve.red);
    if (this.t && !this.t.red)
      this.t = this.t.toRed(this.curve.red);
    this.zOne = this.z === this.curve.one;

    // Use extended coordinates
    if (this.curve.extended && !this.t) {
      this.t = this.x.redMul(this.y);
      if (!this.zOne)
        this.t = this.t.redMul(this.z.redInvm());
    }
  }
}
inherits(Point, Base.BasePoint);

EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

EdwardsCurve.prototype.point = function point(x, y, z, t) {
  return new Point(this, x, y, z, t);
};

Point.fromJSON = function fromJSON(curve, obj) {
  return new Point(curve, obj[0], obj[1], obj[2]);
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' y: ' + this.y.fromRed().toString(16, 2) +
      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.x.cmpn(0) === 0 &&
         this.y.cmp(this.z) === 0;
};

Point.prototype._extDbl = function _extDbl() {
  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
  //     #doubling-dbl-2008-hwcd
  // 4M + 4S

  // A = X1^2
  var a = this.x.redSqr();
  // B = Y1^2
  var b = this.y.redSqr();
  // C = 2 * Z1^2
  var c = this.z.redSqr();
  c = c.redIAdd(c);
  // D = a * A
  var d = this.curve._mulA(a);
  // E = (X1 + Y1)^2 - A - B
  var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b);
  // G = D + B
  var g = d.redAdd(b);
  // F = G - C
  var f = g.redSub(c);
  // H = D - B
  var h = d.redSub(b);
  // X3 = E * F
  var nx = e.redMul(f);
  // Y3 = G * H
  var ny = g.redMul(h);
  // T3 = E * H
  var nt = e.redMul(h);
  // Z3 = F * G
  var nz = f.redMul(g);
  return this.curve.point(nx, ny, nz, nt);
};

Point.prototype._projDbl = function _projDbl() {
  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
  //     #doubling-dbl-2008-bbjlp
  //     #doubling-dbl-2007-bl
  // and others
  // Generally 3M + 4S or 2M + 4S

  // B = (X1 + Y1)^2
  var b = this.x.redAdd(this.y).redSqr();
  // C = X1^2
  var c = this.x.redSqr();
  // D = Y1^2
  var d = this.y.redSqr();

  var nx;
  var ny;
  var nz;
  if (this.curve.twisted) {
    // E = a * C
    var e = this.curve._mulA(c);
    // F = E + D
    var f = e.redAdd(d);
    if (this.zOne) {
      // X3 = (B - C - D) * (F - 2)
      nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two));
      // Y3 = F * (E - D)
      ny = f.redMul(e.redSub(d));
      // Z3 = F^2 - 2 * F
      nz = f.redSqr().redSub(f).redSub(f);
    } else {
      // H = Z1^2
      var h = this.z.redSqr();
      // J = F - 2 * H
      var j = f.redSub(h).redISub(h);
      // X3 = (B-C-D)*J
      nx = b.redSub(c).redISub(d).redMul(j);
      // Y3 = F * (E - D)
      ny = f.redMul(e.redSub(d));
      // Z3 = F * J
      nz = f.redMul(j);
    }
  } else {
    // E = C + D
    var e = c.redAdd(d);
    // H = (c * Z1)^2
    var h = this.curve._mulC(this.c.redMul(this.z)).redSqr();
    // J = E - 2 * H
    var j = e.redSub(h).redSub(h);
    // X3 = c * (B - E) * J
    nx = this.curve._mulC(b.redISub(e)).redMul(j);
    // Y3 = c * E * (C - D)
    ny = this.curve._mulC(e).redMul(c.redISub(d));
    // Z3 = E * J
    nz = e.redMul(j);
  }
  return this.curve.point(nx, ny, nz);
};

Point.prototype.dbl = function dbl() {
  if (this.isInfinity())
    return this;

  // Double in extended coordinates
  if (this.curve.extended)
    return this._extDbl();
  else
    return this._projDbl();
};

Point.prototype._extAdd = function _extAdd(p) {
  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
  //     #addition-add-2008-hwcd-3
  // 8M

  // A = (Y1 - X1) * (Y2 - X2)
  var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x));
  // B = (Y1 + X1) * (Y2 + X2)
  var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x));
  // C = T1 * k * T2
  var c = this.t.redMul(this.curve.dd).redMul(p.t);
  // D = Z1 * 2 * Z2
  var d = this.z.redMul(p.z.redAdd(p.z));
  // E = B - A
  var e = b.redSub(a);
  // F = D - C
  var f = d.redSub(c);
  // G = D + C
  var g = d.redAdd(c);
  // H = B + A
  var h = b.redAdd(a);
  // X3 = E * F
  var nx = e.redMul(f);
  // Y3 = G * H
  var ny = g.redMul(h);
  // T3 = E * H
  var nt = e.redMul(h);
  // Z3 = F * G
  var nz = f.redMul(g);
  return this.curve.point(nx, ny, nz, nt);
};

Point.prototype._projAdd = function _projAdd(p) {
  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
  //     #addition-add-2008-bbjlp
  //     #addition-add-2007-bl
  // 10M + 1S

  // A = Z1 * Z2
  var a = this.z.redMul(p.z);
  // B = A^2
  var b = a.redSqr();
  // C = X1 * X2
  var c = this.x.redMul(p.x);
  // D = Y1 * Y2
  var d = this.y.redMul(p.y);
  // E = d * C * D
  var e = this.curve.d.redMul(c).redMul(d);
  // F = B - E
  var f = b.redSub(e);
  // G = B + E
  var g = b.redAdd(e);
  // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D)
  var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d);
  var nx = a.redMul(f).redMul(tmp);
  var ny;
  var nz;
  if (this.curve.twisted) {
    // Y3 = A * G * (D - a * C)
    ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c)));
    // Z3 = F * G
    nz = f.redMul(g);
  } else {
    // Y3 = A * G * (D - C)
    ny = a.redMul(g).redMul(d.redSub(c));
    // Z3 = c * F * G
    nz = this.curve._mulC(f).redMul(g);
  }
  return this.curve.point(nx, ny, nz);
};

Point.prototype.add = function add(p) {
  if (this.isInfinity())
    return p;
  if (p.isInfinity())
    return this;

  if (this.curve.extended)
    return this._extAdd(p);
  else
    return this._projAdd(p);
};

Point.prototype.mul = function mul(k) {
  if (this._hasDoubles(k))
    return this.curve._fixedNafMul(this, k);
  else
    return this.curve._wnafMul(this, k);
};

Point.prototype.mulAdd = function mulAdd(k1, p, k2) {
  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2);
};

Point.prototype.normalize = function normalize() {
  if (this.zOne)
    return this;

  // Normalize coordinates
  var zi = this.z.redInvm();
  this.x = this.x.redMul(zi);
  this.y = this.y.redMul(zi);
  if (this.t)
    this.t = this.t.redMul(zi);
  this.z = this.curve.one;
  this.zOne = true;
  return this;
};

Point.prototype.neg = function neg() {
  return this.curve.point(this.x.redNeg(),
                          this.y,
                          this.z,
                          this.t && this.t.redNeg());
};

Point.prototype.getX = function getX() {
  this.normalize();
  return this.x.fromRed();
};

Point.prototype.getY = function getY() {
  this.normalize();
  return this.y.fromRed();
};

Point.prototype.eq = function eq(other) {
  return this === other ||
         this.getX().cmp(other.getX()) === 0 &&
         this.getY().cmp(other.getY()) === 0;
};

// Compatibility with BaseCurve
Point.prototype.toP = Point.prototype.normalize;
Point.prototype.mixedAdd = Point.prototype.add;

},{"../../elliptic":218,"../curve":221,"bn.js":216,"inherits":377}],221:[function(require,module,exports){
'use strict';

var curve = exports;

curve.base = require('./base');
curve.short = require('./short');
curve.mont = require('./mont');
curve.edwards = require('./edwards');

},{"./base":219,"./edwards":220,"./mont":222,"./short":223}],222:[function(require,module,exports){
'use strict';

var curve = require('../curve');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = curve.base;

var elliptic = require('../../elliptic');
var utils = elliptic.utils;

function MontCurve(conf) {
  Base.call(this, 'mont', conf);

  this.a = new BN(conf.a, 16).toRed(this.red);
  this.b = new BN(conf.b, 16).toRed(this.red);
  this.i4 = new BN(4).toRed(this.red).redInvm();
  this.two = new BN(2).toRed(this.red);
  this.a24 = this.i4.redMul(this.a.redAdd(this.two));
}
inherits(MontCurve, Base);
module.exports = MontCurve;

MontCurve.prototype.validate = function validate(point) {
  var x = point.normalize().x;
  var x2 = x.redSqr();
  var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x);
  var y = rhs.redSqrt();

  return y.redSqr().cmp(rhs) === 0;
};

function Point(curve, x, z) {
  Base.BasePoint.call(this, curve, 'projective');
  if (x === null && z === null) {
    this.x = this.curve.one;
    this.z = this.curve.zero;
  } else {
    this.x = new BN(x, 16);
    this.z = new BN(z, 16);
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.z.red)
      this.z = this.z.toRed(this.curve.red);
  }
}
inherits(Point, Base.BasePoint);

MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
  return this.point(utils.toArray(bytes, enc), 1);
};

MontCurve.prototype.point = function point(x, z) {
  return new Point(this, x, z);
};

MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
  return Point.fromJSON(this, obj);
};

Point.prototype.precompute = function precompute() {
  // No-op
};

Point.prototype._encode = function _encode() {
  return this.getX().toArray('be', this.curve.p.byteLength());
};

Point.fromJSON = function fromJSON(curve, obj) {
  return new Point(curve, obj[0], obj[1] || curve.one);
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.z.cmpn(0) === 0;
};

Point.prototype.dbl = function dbl() {
  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3
  // 2M + 2S + 4A

  // A = X1 + Z1
  var a = this.x.redAdd(this.z);
  // AA = A^2
  var aa = a.redSqr();
  // B = X1 - Z1
  var b = this.x.redSub(this.z);
  // BB = B^2
  var bb = b.redSqr();
  // C = AA - BB
  var c = aa.redSub(bb);
  // X3 = AA * BB
  var nx = aa.redMul(bb);
  // Z3 = C * (BB + A24 * C)
  var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c)));
  return this.curve.point(nx, nz);
};

Point.prototype.add = function add() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.diffAdd = function diffAdd(p, diff) {
  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3
  // 4M + 2S + 6A

  // A = X2 + Z2
  var a = this.x.redAdd(this.z);
  // B = X2 - Z2
  var b = this.x.redSub(this.z);
  // C = X3 + Z3
  var c = p.x.redAdd(p.z);
  // D = X3 - Z3
  var d = p.x.redSub(p.z);
  // DA = D * A
  var da = d.redMul(a);
  // CB = C * B
  var cb = c.redMul(b);
  // X5 = Z1 * (DA + CB)^2
  var nx = diff.z.redMul(da.redAdd(cb).redSqr());
  // Z5 = X1 * (DA - CB)^2
  var nz = diff.x.redMul(da.redISub(cb).redSqr());
  return this.curve.point(nx, nz);
};

Point.prototype.mul = function mul(k) {
  var t = k.clone();
  var a = this; // (N / 2) * Q + Q
  var b = this.curve.point(null, null); // (N / 2) * Q
  var c = this; // Q

  for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1))
    bits.push(t.andln(1));

  for (var i = bits.length - 1; i >= 0; i--) {
    if (bits[i] === 0) {
      // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q
      a = a.diffAdd(b, c);
      // N * Q = 2 * ((N / 2) * Q + Q))
      b = b.dbl();
    } else {
      // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q)
      b = a.diffAdd(b, c);
      // N * Q + Q = 2 * ((N / 2) * Q + Q)
      a = a.dbl();
    }
  }
  return b;
};

Point.prototype.mulAdd = function mulAdd() {
  throw new Error('Not supported on Montgomery curve');
};

Point.prototype.eq = function eq(other) {
  return this.getX().cmp(other.getX()) === 0;
};

Point.prototype.normalize = function normalize() {
  this.x = this.x.redMul(this.z.redInvm());
  this.z = this.curve.one;
  return this;
};

Point.prototype.getX = function getX() {
  // Normalize coordinates
  this.normalize();

  return this.x.fromRed();
};

},{"../../elliptic":218,"../curve":221,"bn.js":216,"inherits":377}],223:[function(require,module,exports){
'use strict';

var curve = require('../curve');
var elliptic = require('../../elliptic');
var BN = require('bn.js');
var inherits = require('inherits');
var Base = curve.base;

var assert = elliptic.utils.assert;

function ShortCurve(conf) {
  Base.call(this, 'short', conf);

  this.a = new BN(conf.a, 16).toRed(this.red);
  this.b = new BN(conf.b, 16).toRed(this.red);
  this.tinv = this.two.redInvm();

  this.zeroA = this.a.fromRed().cmpn(0) === 0;
  this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0;

  // If the curve is endomorphic, precalculate beta and lambda
  this.endo = this._getEndomorphism(conf);
  this._endoWnafT1 = new Array(4);
  this._endoWnafT2 = new Array(4);
}
inherits(ShortCurve, Base);
module.exports = ShortCurve;

ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) {
  // No efficient endomorphism
  if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1)
    return;

  // Compute beta and lambda, that lambda * P = (beta * Px; Py)
  var beta;
  var lambda;
  if (conf.beta) {
    beta = new BN(conf.beta, 16).toRed(this.red);
  } else {
    var betas = this._getEndoRoots(this.p);
    // Choose the smallest beta
    beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1];
    beta = beta.toRed(this.red);
  }
  if (conf.lambda) {
    lambda = new BN(conf.lambda, 16);
  } else {
    // Choose the lambda that is matching selected beta
    var lambdas = this._getEndoRoots(this.n);
    if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) {
      lambda = lambdas[0];
    } else {
      lambda = lambdas[1];
      assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0);
    }
  }

  // Get basis vectors, used for balanced length-two representation
  var basis;
  if (conf.basis) {
    basis = conf.basis.map(function(vec) {
      return {
        a: new BN(vec.a, 16),
        b: new BN(vec.b, 16)
      };
    });
  } else {
    basis = this._getEndoBasis(lambda);
  }

  return {
    beta: beta,
    lambda: lambda,
    basis: basis
  };
};

ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) {
  // Find roots of for x^2 + x + 1 in F
  // Root = (-1 +- Sqrt(-3)) / 2
  //
  var red = num === this.p ? this.red : BN.mont(num);
  var tinv = new BN(2).toRed(red).redInvm();
  var ntinv = tinv.redNeg();

  var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv);

  var l1 = ntinv.redAdd(s).fromRed();
  var l2 = ntinv.redSub(s).fromRed();
  return [ l1, l2 ];
};

ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) {
  // aprxSqrt >= sqrt(this.n)
  var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2));

  // 3.74
  // Run EGCD, until r(L + 1) < aprxSqrt
  var u = lambda;
  var v = this.n.clone();
  var x1 = new BN(1);
  var y1 = new BN(0);
  var x2 = new BN(0);
  var y2 = new BN(1);

  // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n)
  var a0;
  var b0;
  // First vector
  var a1;
  var b1;
  // Second vector
  var a2;
  var b2;

  var prevR;
  var i = 0;
  var r;
  var x;
  while (u.cmpn(0) !== 0) {
    var q = v.div(u);
    r = v.sub(q.mul(u));
    x = x2.sub(q.mul(x1));
    var y = y2.sub(q.mul(y1));

    if (!a1 && r.cmp(aprxSqrt) < 0) {
      a0 = prevR.neg();
      b0 = x1;
      a1 = r.neg();
      b1 = x;
    } else if (a1 && ++i === 2) {
      break;
    }
    prevR = r;

    v = u;
    u = r;
    x2 = x1;
    x1 = x;
    y2 = y1;
    y1 = y;
  }
  a2 = r.neg();
  b2 = x;

  var len1 = a1.sqr().add(b1.sqr());
  var len2 = a2.sqr().add(b2.sqr());
  if (len2.cmp(len1) >= 0) {
    a2 = a0;
    b2 = b0;
  }

  // Normalize signs
  if (a1.negative) {
    a1 = a1.neg();
    b1 = b1.neg();
  }
  if (a2.negative) {
    a2 = a2.neg();
    b2 = b2.neg();
  }

  return [
    { a: a1, b: b1 },
    { a: a2, b: b2 }
  ];
};

ShortCurve.prototype._endoSplit = function _endoSplit(k) {
  var basis = this.endo.basis;
  var v1 = basis[0];
  var v2 = basis[1];

  var c1 = v2.b.mul(k).divRound(this.n);
  var c2 = v1.b.neg().mul(k).divRound(this.n);

  var p1 = c1.mul(v1.a);
  var p2 = c2.mul(v2.a);
  var q1 = c1.mul(v1.b);
  var q2 = c2.mul(v2.b);

  // Calculate answer
  var k1 = k.sub(p1).sub(p2);
  var k2 = q1.add(q2).neg();
  return { k1: k1, k2: k2 };
};

ShortCurve.prototype.pointFromX = function pointFromX(x, odd) {
  x = new BN(x, 16);
  if (!x.red)
    x = x.toRed(this.red);

  var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b);
  var y = y2.redSqrt();

  // XXX Is there any way to tell if the number is odd without converting it
  // to non-red form?
  var isOdd = y.fromRed().isOdd();
  if (odd && !isOdd || !odd && isOdd)
    y = y.redNeg();

  return this.point(x, y);
};

ShortCurve.prototype.validate = function validate(point) {
  if (point.inf)
    return true;

  var x = point.x;
  var y = point.y;

  var ax = this.a.redMul(x);
  var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b);
  return y.redSqr().redISub(rhs).cmpn(0) === 0;
};

ShortCurve.prototype._endoWnafMulAdd =
    function _endoWnafMulAdd(points, coeffs) {
  var npoints = this._endoWnafT1;
  var ncoeffs = this._endoWnafT2;
  for (var i = 0; i < points.length; i++) {
    var split = this._endoSplit(coeffs[i]);
    var p = points[i];
    var beta = p._getBeta();

    if (split.k1.negative) {
      split.k1.ineg();
      p = p.neg(true);
    }
    if (split.k2.negative) {
      split.k2.ineg();
      beta = beta.neg(true);
    }

    npoints[i * 2] = p;
    npoints[i * 2 + 1] = beta;
    ncoeffs[i * 2] = split.k1;
    ncoeffs[i * 2 + 1] = split.k2;
  }
  var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2);

  // Clean-up references to points and coefficients
  for (var j = 0; j < i * 2; j++) {
    npoints[j] = null;
    ncoeffs[j] = null;
  }
  return res;
};

function Point(curve, x, y, isRed) {
  Base.BasePoint.call(this, curve, 'affine');
  if (x === null && y === null) {
    this.x = null;
    this.y = null;
    this.inf = true;
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    // Force redgomery representation when loading from JSON
    if (isRed) {
      this.x.forceRed(this.curve.red);
      this.y.forceRed(this.curve.red);
    }
    if (!this.x.red)
      this.x = this.x.toRed(this.curve.red);
    if (!this.y.red)
      this.y = this.y.toRed(this.curve.red);
    this.inf = false;
  }
}
inherits(Point, Base.BasePoint);

ShortCurve.prototype.point = function point(x, y, isRed) {
  return new Point(this, x, y, isRed);
};

ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) {
  return Point.fromJSON(this, obj, red);
};

Point.prototype._getBeta = function _getBeta() {
  if (!this.curve.endo)
    return;

  var pre = this.precomputed;
  if (pre && pre.beta)
    return pre.beta;

  var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y);
  if (pre) {
    var curve = this.curve;
    var endoMul = function(p) {
      return curve.point(p.x.redMul(curve.endo.beta), p.y);
    };
    pre.beta = beta;
    beta.precomputed = {
      beta: null,
      naf: pre.naf && {
        wnd: pre.naf.wnd,
        points: pre.naf.points.map(endoMul)
      },
      doubles: pre.doubles && {
        step: pre.doubles.step,
        points: pre.doubles.points.map(endoMul)
      }
    };
  }
  return beta;
};

Point.prototype.toJSON = function toJSON() {
  if (!this.precomputed)
    return [ this.x, this.y ];

  return [ this.x, this.y, this.precomputed && {
    doubles: this.precomputed.doubles && {
      step: this.precomputed.doubles.step,
      points: this.precomputed.doubles.points.slice(1)
    },
    naf: this.precomputed.naf && {
      wnd: this.precomputed.naf.wnd,
      points: this.precomputed.naf.points.slice(1)
    }
  } ];
};

Point.fromJSON = function fromJSON(curve, obj, red) {
  if (typeof obj === 'string')
    obj = JSON.parse(obj);
  var res = curve.point(obj[0], obj[1], red);
  if (!obj[2])
    return res;

  function obj2point(obj) {
    return curve.point(obj[0], obj[1], red);
  }

  var pre = obj[2];
  res.precomputed = {
    beta: null,
    doubles: pre.doubles && {
      step: pre.doubles.step,
      points: [ res ].concat(pre.doubles.points.map(obj2point))
    },
    naf: pre.naf && {
      wnd: pre.naf.wnd,
      points: [ res ].concat(pre.naf.points.map(obj2point))
    }
  };
  return res;
};

Point.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC Point Infinity>';
  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
      ' y: ' + this.y.fromRed().toString(16, 2) + '>';
};

Point.prototype.isInfinity = function isInfinity() {
  return this.inf;
};

Point.prototype.add = function add(p) {
  // O + P = P
  if (this.inf)
    return p;

  // P + O = P
  if (p.inf)
    return this;

  // P + P = 2P
  if (this.eq(p))
    return this.dbl();

  // P + (-P) = O
  if (this.neg().eq(p))
    return this.curve.point(null, null);

  // P + Q = O
  if (this.x.cmp(p.x) === 0)
    return this.curve.point(null, null);

  var c = this.y.redSub(p.y);
  if (c.cmpn(0) !== 0)
    c = c.redMul(this.x.redSub(p.x).redInvm());
  var nx = c.redSqr().redISub(this.x).redISub(p.x);
  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
  return this.curve.point(nx, ny);
};

Point.prototype.dbl = function dbl() {
  if (this.inf)
    return this;

  // 2P = O
  var ys1 = this.y.redAdd(this.y);
  if (ys1.cmpn(0) === 0)
    return this.curve.point(null, null);

  var a = this.curve.a;

  var x2 = this.x.redSqr();
  var dyinv = ys1.redInvm();
  var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv);

  var nx = c.redSqr().redISub(this.x.redAdd(this.x));
  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
  return this.curve.point(nx, ny);
};

Point.prototype.getX = function getX() {
  return this.x.fromRed();
};

Point.prototype.getY = function getY() {
  return this.y.fromRed();
};

Point.prototype.mul = function mul(k) {
  k = new BN(k, 16);

  if (this._hasDoubles(k))
    return this.curve._fixedNafMul(this, k);
  else if (this.curve.endo)
    return this.curve._endoWnafMulAdd([ this ], [ k ]);
  else
    return this.curve._wnafMul(this, k);
};

Point.prototype.mulAdd = function mulAdd(k1, p2, k2) {
  var points = [ this, p2 ];
  var coeffs = [ k1, k2 ];
  if (this.curve.endo)
    return this.curve._endoWnafMulAdd(points, coeffs);
  else
    return this.curve._wnafMulAdd(1, points, coeffs, 2);
};

Point.prototype.eq = function eq(p) {
  return this === p ||
         this.inf === p.inf &&
             (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0);
};

Point.prototype.neg = function neg(_precompute) {
  if (this.inf)
    return this;

  var res = this.curve.point(this.x, this.y.redNeg());
  if (_precompute && this.precomputed) {
    var pre = this.precomputed;
    var negate = function(p) {
      return p.neg();
    };
    res.precomputed = {
      naf: pre.naf && {
        wnd: pre.naf.wnd,
        points: pre.naf.points.map(negate)
      },
      doubles: pre.doubles && {
        step: pre.doubles.step,
        points: pre.doubles.points.map(negate)
      }
    };
  }
  return res;
};

Point.prototype.toJ = function toJ() {
  if (this.inf)
    return this.curve.jpoint(null, null, null);

  var res = this.curve.jpoint(this.x, this.y, this.curve.one);
  return res;
};

function JPoint(curve, x, y, z) {
  Base.BasePoint.call(this, curve, 'jacobian');
  if (x === null && y === null && z === null) {
    this.x = this.curve.one;
    this.y = this.curve.one;
    this.z = new BN(0);
  } else {
    this.x = new BN(x, 16);
    this.y = new BN(y, 16);
    this.z = new BN(z, 16);
  }
  if (!this.x.red)
    this.x = this.x.toRed(this.curve.red);
  if (!this.y.red)
    this.y = this.y.toRed(this.curve.red);
  if (!this.z.red)
    this.z = this.z.toRed(this.curve.red);

  this.zOne = this.z === this.curve.one;
}
inherits(JPoint, Base.BasePoint);

ShortCurve.prototype.jpoint = function jpoint(x, y, z) {
  return new JPoint(this, x, y, z);
};

JPoint.prototype.toP = function toP() {
  if (this.isInfinity())
    return this.curve.point(null, null);

  var zinv = this.z.redInvm();
  var zinv2 = zinv.redSqr();
  var ax = this.x.redMul(zinv2);
  var ay = this.y.redMul(zinv2).redMul(zinv);

  return this.curve.point(ax, ay);
};

JPoint.prototype.neg = function neg() {
  return this.curve.jpoint(this.x, this.y.redNeg(), this.z);
};

JPoint.prototype.add = function add(p) {
  // O + P = P
  if (this.isInfinity())
    return p;

  // P + O = P
  if (p.isInfinity())
    return this;

  // 12M + 4S + 7A
  var pz2 = p.z.redSqr();
  var z2 = this.z.redSqr();
  var u1 = this.x.redMul(pz2);
  var u2 = p.x.redMul(z2);
  var s1 = this.y.redMul(pz2.redMul(p.z));
  var s2 = p.y.redMul(z2.redMul(this.z));

  var h = u1.redSub(u2);
  var r = s1.redSub(s2);
  if (h.cmpn(0) === 0) {
    if (r.cmpn(0) !== 0)
      return this.curve.jpoint(null, null, null);
    else
      return this.dbl();
  }

  var h2 = h.redSqr();
  var h3 = h2.redMul(h);
  var v = u1.redMul(h2);

  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
  var nz = this.z.redMul(p.z).redMul(h);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.mixedAdd = function mixedAdd(p) {
  // O + P = P
  if (this.isInfinity())
    return p.toJ();

  // P + O = P
  if (p.isInfinity())
    return this;

  // 8M + 3S + 7A
  var z2 = this.z.redSqr();
  var u1 = this.x;
  var u2 = p.x.redMul(z2);
  var s1 = this.y;
  var s2 = p.y.redMul(z2).redMul(this.z);

  var h = u1.redSub(u2);
  var r = s1.redSub(s2);
  if (h.cmpn(0) === 0) {
    if (r.cmpn(0) !== 0)
      return this.curve.jpoint(null, null, null);
    else
      return this.dbl();
  }

  var h2 = h.redSqr();
  var h3 = h2.redMul(h);
  var v = u1.redMul(h2);

  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
  var nz = this.z.redMul(h);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.dblp = function dblp(pow) {
  if (pow === 0)
    return this;
  if (this.isInfinity())
    return this;
  if (!pow)
    return this.dbl();

  if (this.curve.zeroA || this.curve.threeA) {
    var r = this;
    for (var i = 0; i < pow; i++)
      r = r.dbl();
    return r;
  }

  // 1M + 2S + 1A + N * (4S + 5M + 8A)
  // N = 1 => 6M + 6S + 9A
  var a = this.curve.a;
  var tinv = this.curve.tinv;

  var jx = this.x;
  var jy = this.y;
  var jz = this.z;
  var jz4 = jz.redSqr().redSqr();

  // Reuse results
  var jyd = jy.redAdd(jy);
  for (var i = 0; i < pow; i++) {
    var jx2 = jx.redSqr();
    var jyd2 = jyd.redSqr();
    var jyd4 = jyd2.redSqr();
    var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));

    var t1 = jx.redMul(jyd2);
    var nx = c.redSqr().redISub(t1.redAdd(t1));
    var t2 = t1.redISub(nx);
    var dny = c.redMul(t2);
    dny = dny.redIAdd(dny).redISub(jyd4);
    var nz = jyd.redMul(jz);
    if (i + 1 < pow)
      jz4 = jz4.redMul(jyd4);

    jx = nx;
    jz = nz;
    jyd = dny;
  }

  return this.curve.jpoint(jx, jyd.redMul(tinv), jz);
};

JPoint.prototype.dbl = function dbl() {
  if (this.isInfinity())
    return this;

  if (this.curve.zeroA)
    return this._zeroDbl();
  else if (this.curve.threeA)
    return this._threeDbl();
  else
    return this._dbl();
};

JPoint.prototype._zeroDbl = function _zeroDbl() {
  var nx;
  var ny;
  var nz;
  // Z = 1
  if (this.zOne) {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
    //     #doubling-mdbl-2007-bl
    // 1M + 5S + 14A

    // XX = X1^2
    var xx = this.x.redSqr();
    // YY = Y1^2
    var yy = this.y.redSqr();
    // YYYY = YY^2
    var yyyy = yy.redSqr();
    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
    s = s.redIAdd(s);
    // M = 3 * XX + a; a = 0
    var m = xx.redAdd(xx).redIAdd(xx);
    // T = M ^ 2 - 2*S
    var t = m.redSqr().redISub(s).redISub(s);

    // 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);

    // X3 = T
    nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2*Y1
    nz = this.y.redAdd(this.y);
  } else {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
    //     #doubling-dbl-2009-l
    // 2M + 5S + 13A

    // A = X1^2
    var a = this.x.redSqr();
    // B = Y1^2
    var b = this.y.redSqr();
    // C = B^2
    var c = b.redSqr();
    // D = 2 * ((X1 + B)^2 - A - C)
    var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c);
    d = d.redIAdd(d);
    // E = 3 * A
    var e = a.redAdd(a).redIAdd(a);
    // F = E^2
    var f = e.redSqr();

    // 8 * C
    var c8 = c.redIAdd(c);
    c8 = c8.redIAdd(c8);
    c8 = c8.redIAdd(c8);

    // X3 = F - 2 * D
    nx = f.redISub(d).redISub(d);
    // Y3 = E * (D - X3) - 8 * C
    ny = e.redMul(d.redISub(nx)).redISub(c8);
    // Z3 = 2 * Y1 * Z1
    nz = this.y.redMul(this.z);
    nz = nz.redIAdd(nz);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._threeDbl = function _threeDbl() {
  var nx;
  var ny;
  var nz;
  // Z = 1
  if (this.zOne) {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html
    //     #doubling-mdbl-2007-bl
    // 1M + 5S + 15A

    // XX = X1^2
    var xx = this.x.redSqr();
    // YY = Y1^2
    var yy = this.y.redSqr();
    // YYYY = YY^2
    var yyyy = yy.redSqr();
    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
    s = s.redIAdd(s);
    // M = 3 * XX + a
    var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a);
    // T = M^2 - 2 * S
    var t = m.redSqr().redISub(s).redISub(s);
    // X3 = T
    nx = t;
    // Y3 = M * (S - T) - 8 * YYYY
    var yyyy8 = yyyy.redIAdd(yyyy);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    yyyy8 = yyyy8.redIAdd(yyyy8);
    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
    // Z3 = 2 * Y1
    nz = this.y.redAdd(this.y);
  } else {
    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
    // 3M + 5S

    // delta = Z1^2
    var delta = this.z.redSqr();
    // gamma = Y1^2
    var gamma = this.y.redSqr();
    // beta = X1 * gamma
    var beta = this.x.redMul(gamma);
    // alpha = 3 * (X1 - delta) * (X1 + delta)
    var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta));
    alpha = alpha.redAdd(alpha).redIAdd(alpha);
    // X3 = alpha^2 - 8 * beta
    var beta4 = beta.redIAdd(beta);
    beta4 = beta4.redIAdd(beta4);
    var beta8 = beta4.redAdd(beta4);
    nx = alpha.redSqr().redISub(beta8);
    // Z3 = (Y1 + Z1)^2 - gamma - delta
    nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta);
    // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2
    var ggamma8 = gamma.redSqr();
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ggamma8 = ggamma8.redIAdd(ggamma8);
    ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8);
  }

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype._dbl = function _dbl() {
  var a = this.curve.a;

  // 4M + 6S + 10A
  var jx = this.x;
  var jy = this.y;
  var jz = this.z;
  var jz4 = jz.redSqr().redSqr();

  var jx2 = jx.redSqr();
  var jy2 = jy.redSqr();

  var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));

  var jxd4 = jx.redAdd(jx);
  jxd4 = jxd4.redIAdd(jxd4);
  var t1 = jxd4.redMul(jy2);
  var nx = c.redSqr().redISub(t1.redAdd(t1));
  var t2 = t1.redISub(nx);

  var jyd8 = jy2.redSqr();
  jyd8 = jyd8.redIAdd(jyd8);
  jyd8 = jyd8.redIAdd(jyd8);
  jyd8 = jyd8.redIAdd(jyd8);
  var ny = c.redMul(t2).redISub(jyd8);
  var nz = jy.redAdd(jy).redMul(jz);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.trpl = function trpl() {
  if (!this.curve.zeroA)
    return this.dbl().add(this);

  // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl
  // 5M + 10S + ...

  // XX = X1^2
  var xx = this.x.redSqr();
  // YY = Y1^2
  var yy = this.y.redSqr();
  // ZZ = Z1^2
  var zz = this.z.redSqr();
  // YYYY = YY^2
  var yyyy = yy.redSqr();
  // M = 3 * XX + a * ZZ2; a = 0
  var m = xx.redAdd(xx).redIAdd(xx);
  // MM = M^2
  var mm = m.redSqr();
  // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM
  var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
  e = e.redIAdd(e);
  e = e.redAdd(e).redIAdd(e);
  e = e.redISub(mm);
  // EE = E^2
  var ee = e.redSqr();
  // T = 16*YYYY
  var t = yyyy.redIAdd(yyyy);
  t = t.redIAdd(t);
  t = t.redIAdd(t);
  t = t.redIAdd(t);
  // U = (M + E)^2 - MM - EE - T
  var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t);
  // X3 = 4 * (X1 * EE - 4 * YY * U)
  var yyu4 = yy.redMul(u);
  yyu4 = yyu4.redIAdd(yyu4);
  yyu4 = yyu4.redIAdd(yyu4);
  var nx = this.x.redMul(ee).redISub(yyu4);
  nx = nx.redIAdd(nx);
  nx = nx.redIAdd(nx);
  // Y3 = 8 * Y1 * (U * (T - U) - E * EE)
  var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee)));
  ny = ny.redIAdd(ny);
  ny = ny.redIAdd(ny);
  ny = ny.redIAdd(ny);
  // Z3 = (Z1 + E)^2 - ZZ - EE
  var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee);

  return this.curve.jpoint(nx, ny, nz);
};

JPoint.prototype.mul = function mul(k, kbase) {
  k = new BN(k, kbase);

  return this.curve._wnafMul(this, k);
};

JPoint.prototype.eq = function eq(p) {
  if (p.type === 'affine')
    return this.eq(p.toJ());

  if (this === p)
    return true;

  // x1 * z2^2 == x2 * z1^2
  var z2 = this.z.redSqr();
  var pz2 = p.z.redSqr();
  if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0)
    return false;

  // y1 * z2^3 == y2 * z1^3
  var z3 = z2.redMul(this.z);
  var pz3 = pz2.redMul(p.z);
  return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0;
};

JPoint.prototype.inspect = function inspect() {
  if (this.isInfinity())
    return '<EC JPoint Infinity>';
  return '<EC JPoint x: ' + this.x.toString(16, 2) +
      ' y: ' + this.y.toString(16, 2) +
      ' z: ' + this.z.toString(16, 2) + '>';
};

JPoint.prototype.isInfinity = function isInfinity() {
  // XXX This code assumes that zero is always zero in red
  return this.z.cmpn(0) === 0;
};

},{"../../elliptic":218,"../curve":221,"bn.js":216,"inherits":377}],224:[function(require,module,exports){
'use strict';

var curves = exports;

var hash = require('hash.js');
var elliptic = require('../elliptic');

var assert = elliptic.utils.assert;

function PresetCurve(options) {
  if (options.type === 'short')
    this.curve = new elliptic.curve.short(options);
  else if (options.type === 'edwards')
    this.curve = new elliptic.curve.edwards(options);
  else
    this.curve = new elliptic.curve.mont(options);
  this.g = this.curve.g;
  this.n = this.curve.n;
  this.hash = options.hash;

  assert(this.g.validate(), 'Invalid curve');
  assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O');
}
curves.PresetCurve = PresetCurve;

function defineCurve(name, options) {
  Object.defineProperty(curves, name, {
    configurable: true,
    enumerable: true,
    get: function() {
      var curve = new PresetCurve(options);
      Object.defineProperty(curves, name, {
        configurable: true,
        enumerable: true,
        value: curve
      });
      return curve;
    }
  });
}

defineCurve('p192', {
  type: 'short',
  prime: 'p192',
  p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff',
  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc',
  b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1',
  n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831',
  hash: hash.sha256,
  gRed: false,
  g: [
    '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012',
    '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811'
  ]
});

defineCurve('p224', {
  type: 'short',
  prime: 'p224',
  p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001',
  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe',
  b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4',
  n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d',
  hash: hash.sha256,
  gRed: false,
  g: [
    'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21',
    'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34'
  ]
});

defineCurve('p256', {
  type: 'short',
  prime: null,
  p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff',
  a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc',
  b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b',
  n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551',
  hash: hash.sha256,
  gRed: false,
  g: [
    '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296',
    '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5'
  ]
});

defineCurve('p384', {
  type: 'short',
  prime: null,
  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'fffffffe ffffffff 00000000 00000000 ffffffff',
  a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'fffffffe ffffffff 00000000 00000000 fffffffc',
  b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' +
     '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef',
  n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' +
     'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973',
  hash: hash.sha384,
  gRed: false,
  g: [
    'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' +
    '5502f25d bf55296c 3a545e38 72760ab7',
    '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' +
    '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f'
  ]
});

defineCurve('p521', {
  type: 'short',
  prime: null,
  p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff',
  a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff ffffffff ffffffff fffffffc',
  b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' +
     '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' +
     '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00',
  n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
     'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' +
     'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409',
  hash: hash.sha512,
  gRed: false,
  g: [
    '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' +
    '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' +
    'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66',
    '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' +
    '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' +
    '3fad0761 353c7086 a272c240 88be9476 9fd16650'
  ]
});

defineCurve('curve25519', {
  type: 'mont',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '76d06',
  b: '0',
  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
  hash: hash.sha256,
  gRed: false,
  g: [
    '9'
  ]
});

defineCurve('ed25519', {
  type: 'edwards',
  prime: 'p25519',
  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
  a: '-1',
  c: '1',
  // -121665 * (121666^(-1)) (mod P)
  d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3',
  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
  hash: hash.sha256,
  gRed: false,
  g: [
    '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a',

    // 4/5
    '6666666666666666666666666666666666666666666666666666666666666658'
  ]
});

var pre;
try {
  pre = require('./precomputed/secp256k1');
} catch (e) {
  pre = undefined;
}

defineCurve('secp256k1', {
  type: 'short',
  prime: 'k256',
  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f',
  a: '0',
  b: '7',
  n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141',
  h: '1',
  hash: hash.sha256,

  // Precomputed endomorphism
  beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee',
  lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72',
  basis: [
    {
      a: '3086d221a7d46bcde86c90e49284eb15',
      b: '-e4437ed6010e88286f547fa90abfe4c3'
    },
    {
      a: '114ca50f7a8e2f3f657c1108d9d44cfd8',
      b: '3086d221a7d46bcde86c90e49284eb15'
    }
  ],

  gRed: false,
  g: [
    '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
    '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
    pre
  ]
});

},{"../elliptic":218,"./precomputed/secp256k1":232,"hash.js":235}],225:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var elliptic = require('../../elliptic');
var utils = elliptic.utils;
var assert = utils.assert;

var KeyPair = require('./key');
var Signature = require('./signature');

function EC(options) {
  if (!(this instanceof EC))
    return new EC(options);

  // Shortcut `elliptic.ec(curve-name)`
  if (typeof options === 'string') {
    assert(elliptic.curves.hasOwnProperty(options), 'Unknown curve ' + options);

    options = elliptic.curves[options];
  }

  // Shortcut for `elliptic.ec(elliptic.curves.curveName)`
  if (options instanceof elliptic.curves.PresetCurve)
    options = { curve: options };

  this.curve = options.curve.curve;
  this.n = this.curve.n;
  this.nh = this.n.ushrn(1);
  this.g = this.curve.g;

  // Point on curve
  this.g = options.curve.g;
  this.g.precompute(options.curve.n.bitLength() + 1);

  // Hash for function for DRBG
  this.hash = options.hash || options.curve.hash;
}
module.exports = EC;

EC.prototype.keyPair = function keyPair(options) {
  return new KeyPair(this, options);
};

EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) {
  return KeyPair.fromPrivate(this, priv, enc);
};

EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) {
  return KeyPair.fromPublic(this, pub, enc);
};

EC.prototype.genKeyPair = function genKeyPair(options) {
  if (!options)
    options = {};

  // Instantiate Hmac_DRBG
  var drbg = new elliptic.hmacDRBG({
    hash: this.hash,
    pers: options.pers,
    entropy: options.entropy || elliptic.rand(this.hash.hmacStrength),
    nonce: this.n.toArray()
  });

  var bytes = this.n.byteLength();
  var ns2 = this.n.sub(new BN(2));
  do {
    var priv = new BN(drbg.generate(bytes));
    if (priv.cmp(ns2) > 0)
      continue;

    priv.iaddn(1);
    return this.keyFromPrivate(priv);
  } while (true);
};

EC.prototype._truncateToN = function truncateToN(msg, truncOnly) {
  var delta = msg.byteLength() * 8 - this.n.bitLength();
  if (delta > 0)
    msg = msg.ushrn(delta);
  if (!truncOnly && msg.cmp(this.n) >= 0)
    return msg.sub(this.n);
  else
    return msg;
};

EC.prototype.sign = function sign(msg, key, enc, options) {
  if (typeof enc === 'object') {
    options = enc;
    enc = null;
  }
  if (!options)
    options = {};

  key = this.keyFromPrivate(key, enc);
  msg = this._truncateToN(new BN(msg, 16));

  // Zero-extend key to provide enough entropy
  var bytes = this.n.byteLength();
  var bkey = key.getPrivate().toArray('be', bytes);

  // Zero-extend nonce to have the same byte size as N
  var nonce = msg.toArray('be', bytes);

  // Instantiate Hmac_DRBG
  var drbg = new elliptic.hmacDRBG({
    hash: this.hash,
    entropy: bkey,
    nonce: nonce,
    pers: options.pers,
    persEnc: options.persEnc
  });

  // Number of bytes to generate
  var ns1 = this.n.sub(new BN(1));

  for (var iter = 0; true; iter++) {
    var k = options.k ?
        options.k(iter) :
        new BN(drbg.generate(this.n.byteLength()));
    k = this._truncateToN(k, true);
    if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0)
      continue;

    var kp = this.g.mul(k);
    if (kp.isInfinity())
      continue;

    var kpX = kp.getX();
    var r = kpX.umod(this.n);
    if (r.cmpn(0) === 0)
      continue;

    var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg));
    s = s.umod(this.n);
    if (s.cmpn(0) === 0)
      continue;

    var recoveryParam = (kp.getY().isOdd() ? 1 : 0) |
                        (kpX.cmp(r) !== 0 ? 2 : 0);

    // Use complement of `s`, if it is > `n / 2`
    if (options.canonical && s.cmp(this.nh) > 0) {
      s = this.n.sub(s);
      recoveryParam ^= 1;
    }

    return new Signature({ r: r, s: s, recoveryParam: recoveryParam });
  }
};

EC.prototype.verify = function verify(msg, signature, key, enc) {
  msg = this._truncateToN(new BN(msg, 16));
  key = this.keyFromPublic(key, enc);
  signature = new Signature(signature, 'hex');

  // Perform primitive values validation
  var r = signature.r;
  var s = signature.s;
  if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0)
    return false;
  if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0)
    return false;

  // Validate signature
  var sinv = s.invm(this.n);
  var u1 = sinv.mul(msg).umod(this.n);
  var u2 = sinv.mul(r).umod(this.n);

  var p = this.g.mulAdd(u1, key.getPublic(), u2);
  if (p.isInfinity())
    return false;

  return p.getX().umod(this.n).cmp(r) === 0;
};

EC.prototype.recoverPubKey = function(msg, signature, j, enc) {
  assert((3 & j) === j, 'The recovery param is more than two bits');
  signature = new Signature(signature, enc);

  var n = this.n;
  var e = new BN(msg);
  var r = signature.r;
  var s = signature.s;

  // A set LSB signifies that the y-coordinate is odd
  var isYOdd = j & 1;
  var isSecondKey = j >> 1;
  if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey)
    throw new Error('Unable to find sencond key candinate');

  // 1.1. Let x = r + jn.
  if (isSecondKey)
    r = this.curve.pointFromX(r.add(this.curve.n), isYOdd);
  else
    r = this.curve.pointFromX(r, isYOdd);

  var eNeg = n.sub(e);

  // 1.6.1 Compute Q = r^-1 (sR -  eG)
  //               Q = r^-1 (sR + -eG)
  var rInv = signature.r.invm(n);
  return r.mul(s).add(this.g.mul(eNeg)).mul(rInv);
};

EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) {
  signature = new Signature(signature, enc);
  if (signature.recoveryParam !== null)
    return signature.recoveryParam;

  for (var i = 0; i < 4; i++) {
    var Qprime = this.recoverPubKey(e, signature, i);

    if (Qprime.eq(Q))
      return i;
  }
  throw new Error('Unable to find valid recovery factor');
};

},{"../../elliptic":218,"./key":226,"./signature":227,"bn.js":216}],226:[function(require,module,exports){
'use strict';

var BN = require('bn.js');

function KeyPair(ec, options) {
  this.ec = ec;
  this.priv = null;
  this.pub = null;

  // KeyPair(ec, { priv: ..., pub: ... })
  if (options.priv)
    this._importPrivate(options.priv, options.privEnc);
  if (options.pub)
    this._importPublic(options.pub, options.pubEnc);
}
module.exports = KeyPair;

KeyPair.fromPublic = function fromPublic(ec, pub, enc) {
  if (pub instanceof KeyPair)
    return pub;

  return new KeyPair(ec, {
    pub: pub,
    pubEnc: enc
  });
};

KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) {
  if (priv instanceof KeyPair)
    return priv;

  return new KeyPair(ec, {
    priv: priv,
    privEnc: enc
  });
};

KeyPair.prototype.validate = function validate() {
  var pub = this.getPublic();

  if (pub.isInfinity())
    return { result: false, reason: 'Invalid public key' };
  if (!pub.validate())
    return { result: false, reason: 'Public key is not a point' };
  if (!pub.mul(this.ec.curve.n).isInfinity())
    return { result: false, reason: 'Public key * N != O' };

  return { result: true, reason: null };
};

KeyPair.prototype.getPublic = function getPublic(compact, enc) {
  // compact is optional argument
  if (typeof compact === 'string') {
    enc = compact;
    compact = null;
  }

  if (!this.pub)
    this.pub = this.ec.g.mul(this.priv);

  if (!enc)
    return this.pub;

  return this.pub.encode(enc, compact);
};

KeyPair.prototype.getPrivate = function getPrivate(enc) {
  if (enc === 'hex')
    return this.priv.toString(16, 2);
  else
    return this.priv;
};

KeyPair.prototype._importPrivate = function _importPrivate(key, enc) {
  this.priv = new BN(key, enc || 16);

  // Ensure that the priv won't be bigger than n, otherwise we may fail
  // in fixed multiplication method
  this.priv = this.priv.umod(this.ec.curve.n);
};

KeyPair.prototype._importPublic = function _importPublic(key, enc) {
  if (key.x || key.y) {
    this.pub = this.ec.curve.point(key.x, key.y);
    return;
  }
  this.pub = this.ec.curve.decodePoint(key, enc);
};

// ECDH
KeyPair.prototype.derive = function derive(pub) {
  return pub.mul(this.priv).getX();
};

// ECDSA
KeyPair.prototype.sign = function sign(msg, enc, options) {
  return this.ec.sign(msg, this, enc, options);
};

KeyPair.prototype.verify = function verify(msg, signature) {
  return this.ec.verify(msg, signature, this);
};

KeyPair.prototype.inspect = function inspect() {
  return '<Key priv: ' + (this.priv && this.priv.toString(16, 2)) +
         ' pub: ' + (this.pub && this.pub.inspect()) + ' >';
};

},{"bn.js":216}],227:[function(require,module,exports){
'use strict';

var BN = require('bn.js');

var elliptic = require('../../elliptic');
var utils = elliptic.utils;
var assert = utils.assert;

function Signature(options, enc) {
  if (options instanceof Signature)
    return options;

  if (this._importDER(options, enc))
    return;

  assert(options.r && options.s, 'Signature without r or s');
  this.r = new BN(options.r, 16);
  this.s = new BN(options.s, 16);
  if (options.recoveryParam !== null)
    this.recoveryParam = options.recoveryParam;
  else
    this.recoveryParam = null;
}
module.exports = Signature;

function Position() {
  this.place = 0;
}

function getLength(buf, p) {
  var initial = buf[p.place++];
  if (!(initial & 0x80)) {
    return initial;
  }
  var octetLen = initial & 0xf;
  var val = 0;
  for (var i = 0, off = p.place; i < octetLen; i++, off++) {
    val <<= 8;
    val |= buf[off];
  }
  p.place = off;
  return val;
}

function rmPadding(buf) {
  var i = 0;
  var len = buf.length - 1;
  while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) {
    i++;
  }
  if (i === 0) {
    return buf;
  }
  return buf.slice(i);
}

Signature.prototype._importDER = function _importDER(data, enc) {
  data = utils.toArray(data, enc);
  var p = new Position();
  if (data[p.place++] !== 0x30) {
    return false;
  }
  var len = getLength(data, p);
  if ((len + p.place) !== data.length) {
    return false;
  }
  if (data[p.place++] !== 0x02) {
    return false;
  }
  var rlen = getLength(data, p);
  var r = data.slice(p.place, rlen + p.place);
  p.place += rlen;
  if (data[p.place++] !== 0x02) {
    return false;
  }
  var slen = getLength(data, p);
  if (data.length !== slen + p.place) {
    return false;
  }
  var s = data.slice(p.place, slen + p.place);
  if (r[0] === 0 && (r[1] & 0x80)) {
    r = r.slice(1);
  }
  if (s[0] === 0 && (s[1] & 0x80)) {
    s = s.slice(1);
  }

  this.r = new BN(r);
  this.s = new BN(s);
  this.recoveryParam = null;

  return true;
};

function constructLength(arr, len) {
  if (len < 0x80) {
    arr.push(len);
    return;
  }
  var octets = 1 + (Math.log(len) / Math.LN2 >>> 3);
  arr.push(octets | 0x80);
  while (--octets) {
    arr.push((len >>> (octets << 3)) & 0xff);
  }
  arr.push(len);
}

Signature.prototype.toDER = function toDER(enc) {
  var r = this.r.toArray();
  var s = this.s.toArray();

  // Pad values
  if (r[0] & 0x80)
    r = [ 0 ].concat(r);
  // Pad values
  if (s[0] & 0x80)
    s = [ 0 ].concat(s);

  r = rmPadding(r);
  s = rmPadding(s);

  while (!s[0] && !(s[1] & 0x80)) {
    s = s.slice(1);
  }
  var arr = [ 0x02 ];
  constructLength(arr, r.length);
  arr = arr.concat(r);
  arr.push(0x02);
  constructLength(arr, s.length);
  var backHalf = arr.concat(s);
  var res = [ 0x30 ];
  constructLength(res, backHalf.length);
  res = res.concat(backHalf);
  return utils.encode(res, enc);
};

},{"../../elliptic":218,"bn.js":216}],228:[function(require,module,exports){
'use strict';

var hash = require('hash.js');
var elliptic = require('../../elliptic');
var utils = elliptic.utils;
var assert = utils.assert;
var parseBytes = utils.parseBytes;
var KeyPair = require('./key');
var Signature = require('./signature');

function EDDSA(curve) {
  assert(curve === 'ed25519', 'only tested with ed25519 so far');

  if (!(this instanceof EDDSA))
    return new EDDSA(curve);

  var curve = elliptic.curves[curve].curve;
  this.curve = curve;
  this.g = curve.g;
  this.g.precompute(curve.n.bitLength() + 1);

  this.pointClass = curve.point().constructor;
  this.encodingLength = Math.ceil(curve.n.bitLength() / 8);
  this.hash = hash.sha512;
}

module.exports = EDDSA;

/**
* @param {Array|String} message - message bytes
* @param {Array|String|KeyPair} secret - secret bytes or a keypair
* @returns {Signature} - signature
*/
EDDSA.prototype.sign = function sign(message, secret) {
  message = parseBytes(message);
  var key = this.keyFromSecret(secret);
  var r = this.hashInt(key.messagePrefix(), message);
  var R = this.g.mul(r);
  var Rencoded = this.encodePoint(R);
  var s_ = this.hashInt(Rencoded, key.pubBytes(), message)
               .mul(key.priv());
  var S = r.add(s_).umod(this.curve.n);
  return this.makeSignature({ R: R, S: S, Rencoded: Rencoded });
};

/**
* @param {Array} message - message bytes
* @param {Array|String|Signature} sig - sig bytes
* @param {Array|String|Point|KeyPair} pub - public key
* @returns {Boolean} - true if public key matches sig of message
*/
EDDSA.prototype.verify = function verify(message, sig, pub) {
  message = parseBytes(message);
  sig = this.makeSignature(sig);
  var key = this.keyFromPublic(pub);
  var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);
  var SG = this.g.mul(sig.S());
  var RplusAh = sig.R().add(key.pub().mul(h));
  return RplusAh.eq(SG);
};

EDDSA.prototype.hashInt = function hashInt() {
  var hash = this.hash();
  for (var i = 0; i < arguments.length; i++)
    hash.update(arguments[i]);
  return utils.intFromLE(hash.digest()).umod(this.curve.n);
};

EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) {
  return KeyPair.fromPublic(this, pub);
};

EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) {
  return KeyPair.fromSecret(this, secret);
};

EDDSA.prototype.makeSignature = function makeSignature(sig) {
  if (sig instanceof Signature)
    return sig;
  return new Signature(this, sig);
};

/**
* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2
*
* EDDSA defines methods for encoding and decoding points and integers. These are
* helper convenience methods, that pass along to utility functions implied
* parameters.
*
*/
EDDSA.prototype.encodePoint = function encodePoint(point) {
  var enc = point.getY().toArray('le', this.encodingLength);
  enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0;
  return enc;
};

EDDSA.prototype.decodePoint = function decodePoint(bytes) {
  bytes = utils.parseBytes(bytes);

  var lastIx = bytes.length - 1;
  var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80);
  var xIsOdd = (bytes[lastIx] & 0x80) !== 0;

  var y = utils.intFromLE(normed);
  return this.curve.pointFromY(y, xIsOdd);
};

EDDSA.prototype.encodeInt = function encodeInt(num) {
  return num.toArray('le', this.encodingLength);
};

EDDSA.prototype.decodeInt = function decodeInt(bytes) {
  return utils.intFromLE(bytes);
};

EDDSA.prototype.isPoint = function isPoint(val) {
  return val instanceof this.pointClass;
};

},{"../../elliptic":218,"./key":229,"./signature":230,"hash.js":235}],229:[function(require,module,exports){
'use strict';

var elliptic = require('../../elliptic');
var utils = elliptic.utils;
var assert = utils.assert;
var parseBytes = utils.parseBytes;
var cachedProperty = utils.cachedProperty;

/**
* @param {EDDSA} eddsa - instance
* @param {Object} params - public/private key parameters
*
* @param {Array<Byte>} [params.secret] - secret seed bytes
* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms)
* @param {Array<Byte>} [params.pub] - public key point encoded as bytes
*
*/
function KeyPair(eddsa, params) {
  this.eddsa = eddsa;
  this._secret = parseBytes(params.secret);
  if (eddsa.isPoint(params.pub))
    this._pub = params.pub;
  else
    this._pubBytes = parseBytes(params.pub);
}

KeyPair.fromPublic = function fromPublic(eddsa, pub) {
  if (pub instanceof KeyPair)
    return pub;
  return new KeyPair(eddsa, { pub: pub });
};

KeyPair.fromSecret = function fromSecret(eddsa, secret) {
  if (secret instanceof KeyPair)
    return secret;
  return new KeyPair(eddsa, { secret: secret });
};

KeyPair.prototype.secret = function secret() {
  return this._secret;
};

cachedProperty(KeyPair, function pubBytes() {
  return this.eddsa.encodePoint(this.pub());
});

cachedProperty(KeyPair, function pub() {
  if (this._pubBytes)
    return this.eddsa.decodePoint(this._pubBytes);
  return this.eddsa.g.mul(this.priv());
});

cachedProperty(KeyPair, function privBytes() {
  var eddsa = this.eddsa;
  var hash = this.hash();
  var lastIx = eddsa.encodingLength - 1;

  var a = hash.slice(0, eddsa.encodingLength);
  a[0] &= 248;
  a[lastIx] &= 127;
  a[lastIx] |= 64;

  return a;
});

cachedProperty(KeyPair, function priv() {
  return this.eddsa.decodeInt(this.privBytes());
});

cachedProperty(KeyPair, function hash() {
  return this.eddsa.hash().update(this.secret()).digest();
});

cachedProperty(KeyPair, function messagePrefix() {
  return this.hash().slice(this.eddsa.encodingLength);
});

KeyPair.prototype.sign = function sign(message) {
  assert(this._secret, 'KeyPair can only verify');
  return this.eddsa.sign(message, this);
};

KeyPair.prototype.verify = function verify(message, sig) {
  return this.eddsa.verify(message, sig, this);
};

KeyPair.prototype.getSecret = function getSecret(enc) {
  assert(this._secret, 'KeyPair is public only');
  return utils.encode(this.secret(), enc);
};

KeyPair.prototype.getPublic = function getPublic(enc) {
  return utils.encode(this.pubBytes(), enc);
};

module.exports = KeyPair;

},{"../../elliptic":218}],230:[function(require,module,exports){
'use strict';

var BN = require('bn.js');
var elliptic = require('../../elliptic');
var utils = elliptic.utils;
var assert = utils.assert;
var cachedProperty = utils.cachedProperty;
var parseBytes = utils.parseBytes;

/**
* @param {EDDSA} eddsa - eddsa instance
* @param {Array<Bytes>|Object} sig -
* @param {Array<Bytes>|Point} [sig.R] - R point as Point or bytes
* @param {Array<Bytes>|bn} [sig.S] - S scalar as bn or bytes
* @param {Array<Bytes>} [sig.Rencoded] - R point encoded
* @param {Array<Bytes>} [sig.Sencoded] - S scalar encoded
*/
function Signature(eddsa, sig) {
  this.eddsa = eddsa;

  if (typeof sig !== 'object')
    sig = parseBytes(sig);

  if (Array.isArray(sig)) {
    sig = {
      R: sig.slice(0, eddsa.encodingLength),
      S: sig.slice(eddsa.encodingLength)
    };
  }

  assert(sig.R && sig.S, 'Signature without R or S');

  if (eddsa.isPoint(sig.R))
    this._R = sig.R;
  if (sig.S instanceof BN)
    this._S = sig.S;

  this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded;
  this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded;
}

cachedProperty(Signature, function S() {
  return this.eddsa.decodeInt(this.Sencoded());
});

cachedProperty(Signature, function R() {
  return this.eddsa.decodePoint(this.Rencoded());
});

cachedProperty(Signature, function Rencoded() {
  return this.eddsa.encodePoint(this.R());
});

cachedProperty(Signature, function Sencoded() {
  return this.eddsa.encodeInt(this.S());
});

Signature.prototype.toBytes = function toBytes() {
  return this.Rencoded().concat(this.Sencoded());
};

Signature.prototype.toHex = function toHex() {
  return utils.encode(this.toBytes(), 'hex').toUpperCase();
};

module.exports = Signature;

},{"../../elliptic":218,"bn.js":216}],231:[function(require,module,exports){
'use strict';

var hash = require('hash.js');
var elliptic = require('../elliptic');
var utils = elliptic.utils;
var assert = utils.assert;

function HmacDRBG(options) {
  if (!(this instanceof HmacDRBG))
    return new HmacDRBG(options);
  this.hash = options.hash;
  this.predResist = !!options.predResist;

  this.outLen = this.hash.outSize;
  this.minEntropy = options.minEntropy || this.hash.hmacStrength;

  this.reseed = null;
  this.reseedInterval = null;
  this.K = null;
  this.V = null;

  var entropy = utils.toArray(options.entropy, options.entropyEnc);
  var nonce = utils.toArray(options.nonce, options.nonceEnc);
  var pers = utils.toArray(options.pers, options.persEnc);
  assert(entropy.length >= (this.minEntropy / 8),
         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
  this._init(entropy, nonce, pers);
}
module.exports = HmacDRBG;

HmacDRBG.prototype._init = function init(entropy, nonce, pers) {
  var seed = entropy.concat(nonce).concat(pers);

  this.K = new Array(this.outLen / 8);
  this.V = new Array(this.outLen / 8);
  for (var i = 0; i < this.V.length; i++) {
    this.K[i] = 0x00;
    this.V[i] = 0x01;
  }

  this._update(seed);
  this.reseed = 1;
  this.reseedInterval = 0x1000000000000;  // 2^48
};

HmacDRBG.prototype._hmac = function hmac() {
  return new hash.hmac(this.hash, this.K);
};

HmacDRBG.prototype._update = function update(seed) {
  var kmac = this._hmac()
                 .update(this.V)
                 .update([ 0x00 ]);
  if (seed)
    kmac = kmac.update(seed);
  this.K = kmac.digest();
  this.V = this._hmac().update(this.V).digest();
  if (!seed)
    return;

  this.K = this._hmac()
               .update(this.V)
               .update([ 0x01 ])
               .update(seed)
               .digest();
  this.V = this._hmac().update(this.V).digest();
};

HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) {
  // Optional entropy enc
  if (typeof entropyEnc !== 'string') {
    addEnc = add;
    add = entropyEnc;
    entropyEnc = null;
  }

  entropy = utils.toBuffer(entropy, entropyEnc);
  add = utils.toBuffer(add, addEnc);

  assert(entropy.length >= (this.minEntropy / 8),
         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');

  this._update(entropy.concat(add || []));
  this.reseed = 1;
};

HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) {
  if (this.reseed > this.reseedInterval)
    throw new Error('Reseed is required');

  // Optional encoding
  if (typeof enc !== 'string') {
    addEnc = add;
    add = enc;
    enc = null;
  }

  // Optional additional data
  if (add) {
    add = utils.toArray(add, addEnc);
    this._update(add);
  }

  var temp = [];
  while (temp.length < len) {
    this.V = this._hmac().update(this.V).digest();
    temp = temp.concat(this.V);
  }

  var res = temp.slice(0, len);
  this._update(add);
  this.reseed++;
  return utils.encode(res, enc);
};

},{"../elliptic":218,"hash.js":235}],232:[function(require,module,exports){
module.exports = {
  doubles: {
    step: 4,
    points: [
      [
        'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a',
        'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821'
      ],
      [
        '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508',
        '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf'
      ],
      [
        '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739',
        'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695'
      ],
      [
        '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640',
        '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9'
      ],
      [
        '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c',
        '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36'
      ],
      [
        '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda',
        '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f'
      ],
      [
        'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa',
        '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999'
      ],
      [
        '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0',
        'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09'
      ],
      [
        'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d',
        '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d'
      ],
      [
        'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d',
        'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088'
      ],
      [
        'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1',
        '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d'
      ],
      [
        '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0',
        '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8'
      ],
      [
        '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047',
        '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a'
      ],
      [
        '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862',
        '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453'
      ],
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        '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7',
        '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160'
      ],
      [
        '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd',
        '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0'
      ],
      [
        '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83',
        '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6'
      ],
      [
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        '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589'
      ],
      [
        '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8',
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      ],
      [
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        '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda'
      ],
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      ],
      [
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        '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2'
      ],
      [
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      ],
      [
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        '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f'
      ],
      [
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        'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01'
      ],
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      ]
    ]
  },
  naf: {
    wnd: 7,
    points: [
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      ],
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      ],
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        'cd450ec335438986dfefa10c57fea9bcc521a0959b2d80bbf74b190dca712d10'
      ],
      [
        'e75605d59102a5a2684500d3b991f2e3f3c88b93225547035af25af66e04541f',
        'f5c54754a8f71ee540b9b48728473e314f729ac5308b06938360990e2bfad125'
      ],
      [
        'eb98660f4c4dfaa06a2be453d5020bc99a0c2e60abe388457dd43fefb1ed620c',
        '6cb9a8876d9cb8520609af3add26cd20a0a7cd8a9411131ce85f44100099223e'
      ],
      [
        '13e87b027d8514d35939f2e6892b19922154596941888336dc3563e3b8dba942',
        'fef5a3c68059a6dec5d624114bf1e91aac2b9da568d6abeb2570d55646b8adf1'
      ],
      [
        'ee163026e9fd6fe017c38f06a5be6fc125424b371ce2708e7bf4491691e5764a',
        '1acb250f255dd61c43d94ccc670d0f58f49ae3fa15b96623e5430da0ad6c62b2'
      ],
      [
        'b268f5ef9ad51e4d78de3a750c2dc89b1e626d43505867999932e5db33af3d80',
        '5f310d4b3c99b9ebb19f77d41c1dee018cf0d34fd4191614003e945a1216e423'
      ],
      [
        'ff07f3118a9df035e9fad85eb6c7bfe42b02f01ca99ceea3bf7ffdba93c4750d',
        '438136d603e858a3a5c440c38eccbaddc1d2942114e2eddd4740d098ced1f0d8'
      ],
      [
        '8d8b9855c7c052a34146fd20ffb658bea4b9f69e0d825ebec16e8c3ce2b526a1',
        'cdb559eedc2d79f926baf44fb84ea4d44bcf50fee51d7ceb30e2e7f463036758'
      ],
      [
        '52db0b5384dfbf05bfa9d472d7ae26dfe4b851ceca91b1eba54263180da32b63',
        'c3b997d050ee5d423ebaf66a6db9f57b3180c902875679de924b69d84a7b375'
      ],
      [
        'e62f9490d3d51da6395efd24e80919cc7d0f29c3f3fa48c6fff543becbd43352',
        '6d89ad7ba4876b0b22c2ca280c682862f342c8591f1daf5170e07bfd9ccafa7d'
      ],
      [
        '7f30ea2476b399b4957509c88f77d0191afa2ff5cb7b14fd6d8e7d65aaab1193',
        'ca5ef7d4b231c94c3b15389a5f6311e9daff7bb67b103e9880ef4bff637acaec'
      ],
      [
        '5098ff1e1d9f14fb46a210fada6c903fef0fb7b4a1dd1d9ac60a0361800b7a00',
        '9731141d81fc8f8084d37c6e7542006b3ee1b40d60dfe5362a5b132fd17ddc0'
      ],
      [
        '32b78c7de9ee512a72895be6b9cbefa6e2f3c4ccce445c96b9f2c81e2778ad58',
        'ee1849f513df71e32efc3896ee28260c73bb80547ae2275ba497237794c8753c'
      ],
      [
        'e2cb74fddc8e9fbcd076eef2a7c72b0ce37d50f08269dfc074b581550547a4f7',
        'd3aa2ed71c9dd2247a62df062736eb0baddea9e36122d2be8641abcb005cc4a4'
      ],
      [
        '8438447566d4d7bedadc299496ab357426009a35f235cb141be0d99cd10ae3a8',
        'c4e1020916980a4da5d01ac5e6ad330734ef0d7906631c4f2390426b2edd791f'
      ],
      [
        '4162d488b89402039b584c6fc6c308870587d9c46f660b878ab65c82c711d67e',
        '67163e903236289f776f22c25fb8a3afc1732f2b84b4e95dbda47ae5a0852649'
      ],
      [
        '3fad3fa84caf0f34f0f89bfd2dcf54fc175d767aec3e50684f3ba4a4bf5f683d',
        'cd1bc7cb6cc407bb2f0ca647c718a730cf71872e7d0d2a53fa20efcdfe61826'
      ],
      [
        '674f2600a3007a00568c1a7ce05d0816c1fb84bf1370798f1c69532faeb1a86b',
        '299d21f9413f33b3edf43b257004580b70db57da0b182259e09eecc69e0d38a5'
      ],
      [
        'd32f4da54ade74abb81b815ad1fb3b263d82d6c692714bcff87d29bd5ee9f08f',
        'f9429e738b8e53b968e99016c059707782e14f4535359d582fc416910b3eea87'
      ],
      [
        '30e4e670435385556e593657135845d36fbb6931f72b08cb1ed954f1e3ce3ff6',
        '462f9bce619898638499350113bbc9b10a878d35da70740dc695a559eb88db7b'
      ],
      [
        'be2062003c51cc3004682904330e4dee7f3dcd10b01e580bf1971b04d4cad297',
        '62188bc49d61e5428573d48a74e1c655b1c61090905682a0d5558ed72dccb9bc'
      ],
      [
        '93144423ace3451ed29e0fb9ac2af211cb6e84a601df5993c419859fff5df04a',
        '7c10dfb164c3425f5c71a3f9d7992038f1065224f72bb9d1d902a6d13037b47c'
      ],
      [
        'b015f8044f5fcbdcf21ca26d6c34fb8197829205c7b7d2a7cb66418c157b112c',
        'ab8c1e086d04e813744a655b2df8d5f83b3cdc6faa3088c1d3aea1454e3a1d5f'
      ],
      [
        'd5e9e1da649d97d89e4868117a465a3a4f8a18de57a140d36b3f2af341a21b52',
        '4cb04437f391ed73111a13cc1d4dd0db1693465c2240480d8955e8592f27447a'
      ],
      [
        'd3ae41047dd7ca065dbf8ed77b992439983005cd72e16d6f996a5316d36966bb',
        'bd1aeb21ad22ebb22a10f0303417c6d964f8cdd7df0aca614b10dc14d125ac46'
      ],
      [
        '463e2763d885f958fc66cdd22800f0a487197d0a82e377b49f80af87c897b065',
        'bfefacdb0e5d0fd7df3a311a94de062b26b80c61fbc97508b79992671ef7ca7f'
      ],
      [
        '7985fdfd127c0567c6f53ec1bb63ec3158e597c40bfe747c83cddfc910641917',
        '603c12daf3d9862ef2b25fe1de289aed24ed291e0ec6708703a5bd567f32ed03'
      ],
      [
        '74a1ad6b5f76e39db2dd249410eac7f99e74c59cb83d2d0ed5ff1543da7703e9',
        'cc6157ef18c9c63cd6193d83631bbea0093e0968942e8c33d5737fd790e0db08'
      ],
      [
        '30682a50703375f602d416664ba19b7fc9bab42c72747463a71d0896b22f6da3',
        '553e04f6b018b4fa6c8f39e7f311d3176290d0e0f19ca73f17714d9977a22ff8'
      ],
      [
        '9e2158f0d7c0d5f26c3791efefa79597654e7a2b2464f52b1ee6c1347769ef57',
        '712fcdd1b9053f09003a3481fa7762e9ffd7c8ef35a38509e2fbf2629008373'
      ],
      [
        '176e26989a43c9cfeba4029c202538c28172e566e3c4fce7322857f3be327d66',
        'ed8cc9d04b29eb877d270b4878dc43c19aefd31f4eee09ee7b47834c1fa4b1c3'
      ],
      [
        '75d46efea3771e6e68abb89a13ad747ecf1892393dfc4f1b7004788c50374da8',
        '9852390a99507679fd0b86fd2b39a868d7efc22151346e1a3ca4726586a6bed8'
      ],
      [
        '809a20c67d64900ffb698c4c825f6d5f2310fb0451c869345b7319f645605721',
        '9e994980d9917e22b76b061927fa04143d096ccc54963e6a5ebfa5f3f8e286c1'
      ],
      [
        '1b38903a43f7f114ed4500b4eac7083fdefece1cf29c63528d563446f972c180',
        '4036edc931a60ae889353f77fd53de4a2708b26b6f5da72ad3394119daf408f9'
      ]
    ]
  }
};

},{}],233:[function(require,module,exports){
'use strict';

var utils = exports;
var BN = require('bn.js');

utils.assert = function assert(val, msg) {
  if (!val)
    throw new Error(msg || 'Assertion failed');
};

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg !== 'string') {
    for (var i = 0; i < msg.length; i++)
      res[i] = msg[i] | 0;
    return res;
  }
  if (!enc) {
    for (var i = 0; i < msg.length; i++) {
      var c = msg.charCodeAt(i);
      var hi = c >> 8;
      var lo = c & 0xff;
      if (hi)
        res.push(hi, lo);
      else
        res.push(lo);
    }
  } else if (enc === 'hex') {
    msg = msg.replace(/[^a-z0-9]+/ig, '');
    if (msg.length % 2 !== 0)
      msg = '0' + msg;
    for (var i = 0; i < msg.length; i += 2)
      res.push(parseInt(msg[i] + msg[i + 1], 16));
  }
  return res;
}
utils.toArray = toArray;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
utils.zero2 = zero2;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
utils.toHex = toHex;

utils.encode = function encode(arr, enc) {
  if (enc === 'hex')
    return toHex(arr);
  else
    return arr;
};

// Represent num in a w-NAF form
function getNAF(num, w) {
  var naf = [];
  var ws = 1 << (w + 1);
  var k = num.clone();
  while (k.cmpn(1) >= 0) {
    var z;
    if (k.isOdd()) {
      var mod = k.andln(ws - 1);
      if (mod > (ws >> 1) - 1)
        z = (ws >> 1) - mod;
      else
        z = mod;
      k.isubn(z);
    } else {
      z = 0;
    }
    naf.push(z);

    // Optimization, shift by word if possible
    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
    for (var i = 1; i < shift; i++)
      naf.push(0);
    k.iushrn(shift);
  }

  return naf;
}
utils.getNAF = getNAF;

// Represent k1, k2 in a Joint Sparse Form
function getJSF(k1, k2) {
  var jsf = [
    [],
    []
  ];

  k1 = k1.clone();
  k2 = k2.clone();
  var d1 = 0;
  var d2 = 0;
  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {

    // First phase
    var m14 = (k1.andln(3) + d1) & 3;
    var m24 = (k2.andln(3) + d2) & 3;
    if (m14 === 3)
      m14 = -1;
    if (m24 === 3)
      m24 = -1;
    var u1;
    if ((m14 & 1) === 0) {
      u1 = 0;
    } else {
      var m8 = (k1.andln(7) + d1) & 7;
      if ((m8 === 3 || m8 === 5) && m24 === 2)
        u1 = -m14;
      else
        u1 = m14;
    }
    jsf[0].push(u1);

    var u2;
    if ((m24 & 1) === 0) {
      u2 = 0;
    } else {
      var m8 = (k2.andln(7) + d2) & 7;
      if ((m8 === 3 || m8 === 5) && m14 === 2)
        u2 = -m24;
      else
        u2 = m24;
    }
    jsf[1].push(u2);

    // Second phase
    if (2 * d1 === u1 + 1)
      d1 = 1 - d1;
    if (2 * d2 === u2 + 1)
      d2 = 1 - d2;
    k1.iushrn(1);
    k2.iushrn(1);
  }

  return jsf;
}
utils.getJSF = getJSF;

function cachedProperty(obj, computer) {
  var name = computer.name;
  var key = '_' + name;
  obj.prototype[name] = function cachedProperty() {
    return this[key] !== undefined ? this[key] :
           this[key] = computer.call(this);
  };
}
utils.cachedProperty = cachedProperty;

function parseBytes(bytes) {
  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
                                     bytes;
}
utils.parseBytes = parseBytes;

function intFromLE(bytes) {
  return new BN(bytes, 'hex', 'le');
}
utils.intFromLE = intFromLE;


},{"bn.js":216}],234:[function(require,module,exports){
var r;

module.exports = function rand(len) {
  if (!r)
    r = new Rand(null);

  return r.generate(len);
};

function Rand(rand) {
  this.rand = rand;
}
module.exports.Rand = Rand;

Rand.prototype.generate = function generate(len) {
  return this._rand(len);
};

if (typeof window === 'object') {
  if (window.crypto && window.crypto.getRandomValues) {
    // Modern browsers
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      window.crypto.getRandomValues(arr);
      return arr;
    };
  } else if (window.msCrypto && window.msCrypto.getRandomValues) {
    // IE
    Rand.prototype._rand = function _rand(n) {
      var arr = new Uint8Array(n);
      window.msCrypto.getRandomValues(arr);
      return arr;
    };
  } else {
    // Old junk
    Rand.prototype._rand = function() {
      throw new Error('Not implemented yet');
    };
  }
} else {
  // Node.js or Web worker
  try {
    var crypto = require('cry' + 'pto');

    Rand.prototype._rand = function _rand(n) {
      return crypto.randomBytes(n);
    };
  } catch (e) {
    // Emulate crypto API using randy
    Rand.prototype._rand = function _rand(n) {
      var res = new Uint8Array(n);
      for (var i = 0; i < res.length; i++)
        res[i] = this.rand.getByte();
      return res;
    };
  }
}

},{}],235:[function(require,module,exports){
var hash = exports;

hash.utils = require('./hash/utils');
hash.common = require('./hash/common');
hash.sha = require('./hash/sha');
hash.ripemd = require('./hash/ripemd');
hash.hmac = require('./hash/hmac');

// Proxy hash functions to the main object
hash.sha1 = hash.sha.sha1;
hash.sha256 = hash.sha.sha256;
hash.sha224 = hash.sha.sha224;
hash.sha384 = hash.sha.sha384;
hash.sha512 = hash.sha.sha512;
hash.ripemd160 = hash.ripemd.ripemd160;

},{"./hash/common":236,"./hash/hmac":237,"./hash/ripemd":238,"./hash/sha":239,"./hash/utils":240}],236:[function(require,module,exports){
var hash = require('../hash');
var utils = hash.utils;
var assert = utils.assert;

function BlockHash() {
  this.pending = null;
  this.pendingTotal = 0;
  this.blockSize = this.constructor.blockSize;
  this.outSize = this.constructor.outSize;
  this.hmacStrength = this.constructor.hmacStrength;
  this.padLength = this.constructor.padLength / 8;
  this.endian = 'big';

  this._delta8 = this.blockSize / 8;
  this._delta32 = this.blockSize / 32;
}
exports.BlockHash = BlockHash;

BlockHash.prototype.update = function update(msg, enc) {
  // Convert message to array, pad it, and join into 32bit blocks
  msg = utils.toArray(msg, enc);
  if (!this.pending)
    this.pending = msg;
  else
    this.pending = this.pending.concat(msg);
  this.pendingTotal += msg.length;

  // Enough data, try updating
  if (this.pending.length >= this._delta8) {
    msg = this.pending;

    // Process pending data in blocks
    var r = msg.length % this._delta8;
    this.pending = msg.slice(msg.length - r, msg.length);
    if (this.pending.length === 0)
      this.pending = null;

    msg = utils.join32(msg, 0, msg.length - r, this.endian);
    for (var i = 0; i < msg.length; i += this._delta32)
      this._update(msg, i, i + this._delta32);
  }

  return this;
};

BlockHash.prototype.digest = function digest(enc) {
  this.update(this._pad());
  assert(this.pending === null);

  return this._digest(enc);
};

BlockHash.prototype._pad = function pad() {
  var len = this.pendingTotal;
  var bytes = this._delta8;
  var k = bytes - ((len + this.padLength) % bytes);
  var res = new Array(k + this.padLength);
  res[0] = 0x80;
  for (var i = 1; i < k; i++)
    res[i] = 0;

  // Append length
  len <<= 3;
  if (this.endian === 'big') {
    for (var t = 8; t < this.padLength; t++)
      res[i++] = 0;

    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = (len >>> 24) & 0xff;
    res[i++] = (len >>> 16) & 0xff;
    res[i++] = (len >>> 8) & 0xff;
    res[i++] = len & 0xff;
  } else {
    res[i++] = len & 0xff;
    res[i++] = (len >>> 8) & 0xff;
    res[i++] = (len >>> 16) & 0xff;
    res[i++] = (len >>> 24) & 0xff;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;
    res[i++] = 0;

    for (var t = 8; t < this.padLength; t++)
      res[i++] = 0;
  }

  return res;
};

},{"../hash":235}],237:[function(require,module,exports){
var hmac = exports;

var hash = require('../hash');
var utils = hash.utils;
var assert = utils.assert;

function Hmac(hash, key, enc) {
  if (!(this instanceof Hmac))
    return new Hmac(hash, key, enc);
  this.Hash = hash;
  this.blockSize = hash.blockSize / 8;
  this.outSize = hash.outSize / 8;
  this.inner = null;
  this.outer = null;

  this._init(utils.toArray(key, enc));
}
module.exports = Hmac;

Hmac.prototype._init = function init(key) {
  // Shorten key, if needed
  if (key.length > this.blockSize)
    key = new this.Hash().update(key).digest();
  assert(key.length <= this.blockSize);

  // Add padding to key
  for (var i = key.length; i < this.blockSize; i++)
    key.push(0);

  for (var i = 0; i < key.length; i++)
    key[i] ^= 0x36;
  this.inner = new this.Hash().update(key);

  // 0x36 ^ 0x5c = 0x6a
  for (var i = 0; i < key.length; i++)
    key[i] ^= 0x6a;
  this.outer = new this.Hash().update(key);
};

Hmac.prototype.update = function update(msg, enc) {
  this.inner.update(msg, enc);
  return this;
};

Hmac.prototype.digest = function digest(enc) {
  this.outer.update(this.inner.digest());
  return this.outer.digest(enc);
};

},{"../hash":235}],238:[function(require,module,exports){
var hash = require('../hash');
var utils = hash.utils;

var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_3 = utils.sum32_3;
var sum32_4 = utils.sum32_4;
var BlockHash = hash.common.BlockHash;

function RIPEMD160() {
  if (!(this instanceof RIPEMD160))
    return new RIPEMD160();

  BlockHash.call(this);

  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
  this.endian = 'little';
}
utils.inherits(RIPEMD160, BlockHash);
exports.ripemd160 = RIPEMD160;

RIPEMD160.blockSize = 512;
RIPEMD160.outSize = 160;
RIPEMD160.hmacStrength = 192;
RIPEMD160.padLength = 64;

RIPEMD160.prototype._update = function update(msg, start) {
  var A = this.h[0];
  var B = this.h[1];
  var C = this.h[2];
  var D = this.h[3];
  var E = this.h[4];
  var Ah = A;
  var Bh = B;
  var Ch = C;
  var Dh = D;
  var Eh = E;
  for (var j = 0; j < 80; j++) {
    var T = sum32(
      rotl32(
        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
        s[j]),
      E);
    A = E;
    E = D;
    D = rotl32(C, 10);
    C = B;
    B = T;
    T = sum32(
      rotl32(
        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
        sh[j]),
      Eh);
    Ah = Eh;
    Eh = Dh;
    Dh = rotl32(Ch, 10);
    Ch = Bh;
    Bh = T;
  }
  T = sum32_3(this.h[1], C, Dh);
  this.h[1] = sum32_3(this.h[2], D, Eh);
  this.h[2] = sum32_3(this.h[3], E, Ah);
  this.h[3] = sum32_3(this.h[4], A, Bh);
  this.h[4] = sum32_3(this.h[0], B, Ch);
  this.h[0] = T;
};

RIPEMD160.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'little');
  else
    return utils.split32(this.h, 'little');
};

function f(j, x, y, z) {
  if (j <= 15)
    return x ^ y ^ z;
  else if (j <= 31)
    return (x & y) | ((~x) & z);
  else if (j <= 47)
    return (x | (~y)) ^ z;
  else if (j <= 63)
    return (x & z) | (y & (~z));
  else
    return x ^ (y | (~z));
}

function K(j) {
  if (j <= 15)
    return 0x00000000;
  else if (j <= 31)
    return 0x5a827999;
  else if (j <= 47)
    return 0x6ed9eba1;
  else if (j <= 63)
    return 0x8f1bbcdc;
  else
    return 0xa953fd4e;
}

function Kh(j) {
  if (j <= 15)
    return 0x50a28be6;
  else if (j <= 31)
    return 0x5c4dd124;
  else if (j <= 47)
    return 0x6d703ef3;
  else if (j <= 63)
    return 0x7a6d76e9;
  else
    return 0x00000000;
}

var r = [
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
];

var rh = [
  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
];

var s = [
  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
];

var sh = [
  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
];

},{"../hash":235}],239:[function(require,module,exports){
var hash = require('../hash');
var utils = hash.utils;
var assert = utils.assert;

var rotr32 = utils.rotr32;
var rotl32 = utils.rotl32;
var sum32 = utils.sum32;
var sum32_4 = utils.sum32_4;
var sum32_5 = utils.sum32_5;
var rotr64_hi = utils.rotr64_hi;
var rotr64_lo = utils.rotr64_lo;
var shr64_hi = utils.shr64_hi;
var shr64_lo = utils.shr64_lo;
var sum64 = utils.sum64;
var sum64_hi = utils.sum64_hi;
var sum64_lo = utils.sum64_lo;
var sum64_4_hi = utils.sum64_4_hi;
var sum64_4_lo = utils.sum64_4_lo;
var sum64_5_hi = utils.sum64_5_hi;
var sum64_5_lo = utils.sum64_5_lo;
var BlockHash = hash.common.BlockHash;

var sha256_K = [
  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
];

var sha512_K = [
  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
];

var sha1_K = [
  0x5A827999, 0x6ED9EBA1,
  0x8F1BBCDC, 0xCA62C1D6
];

function SHA256() {
  if (!(this instanceof SHA256))
    return new SHA256();

  BlockHash.call(this);
  this.h = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
             0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];
  this.k = sha256_K;
  this.W = new Array(64);
}
utils.inherits(SHA256, BlockHash);
exports.sha256 = SHA256;

SHA256.blockSize = 512;
SHA256.outSize = 256;
SHA256.hmacStrength = 192;
SHA256.padLength = 64;

SHA256.prototype._update = function _update(msg, start) {
  var W = this.W;

  for (var i = 0; i < 16; i++)
    W[i] = msg[start + i];
  for (; i < W.length; i++)
    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);

  var a = this.h[0];
  var b = this.h[1];
  var c = this.h[2];
  var d = this.h[3];
  var e = this.h[4];
  var f = this.h[5];
  var g = this.h[6];
  var h = this.h[7];

  assert(this.k.length === W.length);
  for (var i = 0; i < W.length; i++) {
    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
    var T2 = sum32(s0_256(a), maj32(a, b, c));
    h = g;
    g = f;
    f = e;
    e = sum32(d, T1);
    d = c;
    c = b;
    b = a;
    a = sum32(T1, T2);
  }

  this.h[0] = sum32(this.h[0], a);
  this.h[1] = sum32(this.h[1], b);
  this.h[2] = sum32(this.h[2], c);
  this.h[3] = sum32(this.h[3], d);
  this.h[4] = sum32(this.h[4], e);
  this.h[5] = sum32(this.h[5], f);
  this.h[6] = sum32(this.h[6], g);
  this.h[7] = sum32(this.h[7], h);
};

SHA256.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

function SHA224() {
  if (!(this instanceof SHA224))
    return new SHA224();

  SHA256.call(this);
  this.h = [ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
             0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
}
utils.inherits(SHA224, SHA256);
exports.sha224 = SHA224;

SHA224.blockSize = 512;
SHA224.outSize = 224;
SHA224.hmacStrength = 192;
SHA224.padLength = 64;

SHA224.prototype._digest = function digest(enc) {
  // Just truncate output
  if (enc === 'hex')
    return utils.toHex32(this.h.slice(0, 7), 'big');
  else
    return utils.split32(this.h.slice(0, 7), 'big');
};

function SHA512() {
  if (!(this instanceof SHA512))
    return new SHA512();

  BlockHash.call(this);
  this.h = [ 0x6a09e667, 0xf3bcc908,
             0xbb67ae85, 0x84caa73b,
             0x3c6ef372, 0xfe94f82b,
             0xa54ff53a, 0x5f1d36f1,
             0x510e527f, 0xade682d1,
             0x9b05688c, 0x2b3e6c1f,
             0x1f83d9ab, 0xfb41bd6b,
             0x5be0cd19, 0x137e2179 ];
  this.k = sha512_K;
  this.W = new Array(160);
}
utils.inherits(SHA512, BlockHash);
exports.sha512 = SHA512;

SHA512.blockSize = 1024;
SHA512.outSize = 512;
SHA512.hmacStrength = 192;
SHA512.padLength = 128;

SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
  var W = this.W;

  // 32 x 32bit words
  for (var i = 0; i < 32; i++)
    W[i] = msg[start + i];
  for (; i < W.length; i += 2) {
    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
    var c1_hi = W[i - 14];  // i - 7
    var c1_lo = W[i - 13];
    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
    var c3_hi = W[i - 32];  // i - 16
    var c3_lo = W[i - 31];

    W[i] = sum64_4_hi(c0_hi, c0_lo,
                      c1_hi, c1_lo,
                      c2_hi, c2_lo,
                      c3_hi, c3_lo);
    W[i + 1] = sum64_4_lo(c0_hi, c0_lo,
                          c1_hi, c1_lo,
                          c2_hi, c2_lo,
                          c3_hi, c3_lo);
  }
};

SHA512.prototype._update = function _update(msg, start) {
  this._prepareBlock(msg, start);

  var W = this.W;

  var ah = this.h[0];
  var al = this.h[1];
  var bh = this.h[2];
  var bl = this.h[3];
  var ch = this.h[4];
  var cl = this.h[5];
  var dh = this.h[6];
  var dl = this.h[7];
  var eh = this.h[8];
  var el = this.h[9];
  var fh = this.h[10];
  var fl = this.h[11];
  var gh = this.h[12];
  var gl = this.h[13];
  var hh = this.h[14];
  var hl = this.h[15];

  assert(this.k.length === W.length);
  for (var i = 0; i < W.length; i += 2) {
    var c0_hi = hh;
    var c0_lo = hl;
    var c1_hi = s1_512_hi(eh, el);
    var c1_lo = s1_512_lo(eh, el);
    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
    var c3_hi = this.k[i];
    var c3_lo = this.k[i + 1];
    var c4_hi = W[i];
    var c4_lo = W[i + 1];

    var T1_hi = sum64_5_hi(c0_hi, c0_lo,
                           c1_hi, c1_lo,
                           c2_hi, c2_lo,
                           c3_hi, c3_lo,
                           c4_hi, c4_lo);
    var T1_lo = sum64_5_lo(c0_hi, c0_lo,
                           c1_hi, c1_lo,
                           c2_hi, c2_lo,
                           c3_hi, c3_lo,
                           c4_hi, c4_lo);

    var c0_hi = s0_512_hi(ah, al);
    var c0_lo = s0_512_lo(ah, al);
    var c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
    var c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);

    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);

    hh = gh;
    hl = gl;

    gh = fh;
    gl = fl;

    fh = eh;
    fl = el;

    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
    el = sum64_lo(dl, dl, T1_hi, T1_lo);

    dh = ch;
    dl = cl;

    ch = bh;
    cl = bl;

    bh = ah;
    bl = al;

    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
  }

  sum64(this.h, 0, ah, al);
  sum64(this.h, 2, bh, bl);
  sum64(this.h, 4, ch, cl);
  sum64(this.h, 6, dh, dl);
  sum64(this.h, 8, eh, el);
  sum64(this.h, 10, fh, fl);
  sum64(this.h, 12, gh, gl);
  sum64(this.h, 14, hh, hl);
};

SHA512.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

function SHA384() {
  if (!(this instanceof SHA384))
    return new SHA384();

  SHA512.call(this);
  this.h = [ 0xcbbb9d5d, 0xc1059ed8,
             0x629a292a, 0x367cd507,
             0x9159015a, 0x3070dd17,
             0x152fecd8, 0xf70e5939,
             0x67332667, 0xffc00b31,
             0x8eb44a87, 0x68581511,
             0xdb0c2e0d, 0x64f98fa7,
             0x47b5481d, 0xbefa4fa4 ];
}
utils.inherits(SHA384, SHA512);
exports.sha384 = SHA384;

SHA384.blockSize = 1024;
SHA384.outSize = 384;
SHA384.hmacStrength = 192;
SHA384.padLength = 128;

SHA384.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h.slice(0, 12), 'big');
  else
    return utils.split32(this.h.slice(0, 12), 'big');
};

function SHA1() {
  if (!(this instanceof SHA1))
    return new SHA1();

  BlockHash.call(this);
  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe,
             0x10325476, 0xc3d2e1f0 ];
  this.W = new Array(80);
}

utils.inherits(SHA1, BlockHash);
exports.sha1 = SHA1;

SHA1.blockSize = 512;
SHA1.outSize = 160;
SHA1.hmacStrength = 80;
SHA1.padLength = 64;

SHA1.prototype._update = function _update(msg, start) {
  var W = this.W;

  for (var i = 0; i < 16; i++)
    W[i] = msg[start + i];

  for(; i < W.length; i++)
    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);

  var a = this.h[0];
  var b = this.h[1];
  var c = this.h[2];
  var d = this.h[3];
  var e = this.h[4];

  for (var i = 0; i < W.length; i++) {
    var s = ~~(i / 20);
    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
    e = d;
    d = c;
    c = rotl32(b, 30);
    b = a;
    a = t;
  }

  this.h[0] = sum32(this.h[0], a);
  this.h[1] = sum32(this.h[1], b);
  this.h[2] = sum32(this.h[2], c);
  this.h[3] = sum32(this.h[3], d);
  this.h[4] = sum32(this.h[4], e);
};

SHA1.prototype._digest = function digest(enc) {
  if (enc === 'hex')
    return utils.toHex32(this.h, 'big');
  else
    return utils.split32(this.h, 'big');
};

function ch32(x, y, z) {
  return (x & y) ^ ((~x) & z);
}

function maj32(x, y, z) {
  return (x & y) ^ (x & z) ^ (y & z);
}

function p32(x, y, z) {
  return x ^ y ^ z;
}

function s0_256(x) {
  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
}

function s1_256(x) {
  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
}

function g0_256(x) {
  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
}

function g1_256(x) {
  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
}

function ft_1(s, x, y, z) {
  if (s === 0)
    return ch32(x, y, z);
  if (s === 1 || s === 3)
    return p32(x, y, z);
  if (s === 2)
    return maj32(x, y, z);
}

function ch64_hi(xh, xl, yh, yl, zh, zl) {
  var r = (xh & yh) ^ ((~xh) & zh);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function ch64_lo(xh, xl, yh, yl, zh, zl) {
  var r = (xl & yl) ^ ((~xl) & zl);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function maj64_hi(xh, xl, yh, yl, zh, zl) {
  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function maj64_lo(xh, xl, yh, yl, zh, zl) {
  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s0_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 28);
  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
  var c2_hi = rotr64_hi(xl, xh, 7);  // 39

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s0_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 28);
  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
  var c2_lo = rotr64_lo(xl, xh, 7);  // 39

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s1_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 14);
  var c1_hi = rotr64_hi(xh, xl, 18);
  var c2_hi = rotr64_hi(xl, xh, 9);  // 41

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function s1_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 14);
  var c1_lo = rotr64_lo(xh, xl, 18);
  var c2_lo = rotr64_lo(xl, xh, 9);  // 41

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g0_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 1);
  var c1_hi = rotr64_hi(xh, xl, 8);
  var c2_hi = shr64_hi(xh, xl, 7);

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g0_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 1);
  var c1_lo = rotr64_lo(xh, xl, 8);
  var c2_lo = shr64_lo(xh, xl, 7);

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g1_512_hi(xh, xl) {
  var c0_hi = rotr64_hi(xh, xl, 19);
  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
  var c2_hi = shr64_hi(xh, xl, 6);

  var r = c0_hi ^ c1_hi ^ c2_hi;
  if (r < 0)
    r += 0x100000000;
  return r;
}

function g1_512_lo(xh, xl) {
  var c0_lo = rotr64_lo(xh, xl, 19);
  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
  var c2_lo = shr64_lo(xh, xl, 6);

  var r = c0_lo ^ c1_lo ^ c2_lo;
  if (r < 0)
    r += 0x100000000;
  return r;
}

},{"../hash":235}],240:[function(require,module,exports){
var utils = exports;
var inherits = require('inherits');

function toArray(msg, enc) {
  if (Array.isArray(msg))
    return msg.slice();
  if (!msg)
    return [];
  var res = [];
  if (typeof msg === 'string') {
    if (!enc) {
      for (var i = 0; i < msg.length; i++) {
        var c = msg.charCodeAt(i);
        var hi = c >> 8;
        var lo = c & 0xff;
        if (hi)
          res.push(hi, lo);
        else
          res.push(lo);
      }
    } else if (enc === 'hex') {
      msg = msg.replace(/[^a-z0-9]+/ig, '');
      if (msg.length % 2 !== 0)
        msg = '0' + msg;
      for (var i = 0; i < msg.length; i += 2)
        res.push(parseInt(msg[i] + msg[i + 1], 16));
    }
  } else {
    for (var i = 0; i < msg.length; i++)
      res[i] = msg[i] | 0;
  }
  return res;
}
utils.toArray = toArray;

function toHex(msg) {
  var res = '';
  for (var i = 0; i < msg.length; i++)
    res += zero2(msg[i].toString(16));
  return res;
}
utils.toHex = toHex;

function htonl(w) {
  var res = (w >>> 24) |
            ((w >>> 8) & 0xff00) |
            ((w << 8) & 0xff0000) |
            ((w & 0xff) << 24);
  return res >>> 0;
}
utils.htonl = htonl;

function toHex32(msg, endian) {
  var res = '';
  for (var i = 0; i < msg.length; i++) {
    var w = msg[i];
    if (endian === 'little')
      w = htonl(w);
    res += zero8(w.toString(16));
  }
  return res;
}
utils.toHex32 = toHex32;

function zero2(word) {
  if (word.length === 1)
    return '0' + word;
  else
    return word;
}
utils.zero2 = zero2;

function zero8(word) {
  if (word.length === 7)
    return '0' + word;
  else if (word.length === 6)
    return '00' + word;
  else if (word.length === 5)
    return '000' + word;
  else if (word.length === 4)
    return '0000' + word;
  else if (word.length === 3)
    return '00000' + word;
  else if (word.length === 2)
    return '000000' + word;
  else if (word.length === 1)
    return '0000000' + word;
  else
    return word;
}
utils.zero8 = zero8;

function join32(msg, start, end, endian) {
  var len = end - start;
  assert(len % 4 === 0);
  var res = new Array(len / 4);
  for (var i = 0, k = start; i < res.length; i++, k += 4) {
    var w;
    if (endian === 'big')
      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
    else
      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
    res[i] = w >>> 0;
  }
  return res;
}
utils.join32 = join32;

function split32(msg, endian) {
  var res = new Array(msg.length * 4);
  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
    var m = msg[i];
    if (endian === 'big') {
      res[k] = m >>> 24;
      res[k + 1] = (m >>> 16) & 0xff;
      res[k + 2] = (m >>> 8) & 0xff;
      res[k + 3] = m & 0xff;
    } else {
      res[k + 3] = m >>> 24;
      res[k + 2] = (m >>> 16) & 0xff;
      res[k + 1] = (m >>> 8) & 0xff;
      res[k] = m & 0xff;
    }
  }
  return res;
}
utils.split32 = split32;

function rotr32(w, b) {
  return (w >>> b) | (w << (32 - b));
}
utils.rotr32 = rotr32;

function rotl32(w, b) {
  return (w << b) | (w >>> (32 - b));
}
utils.rotl32 = rotl32;

function sum32(a, b) {
  return (a + b) >>> 0;
}
utils.sum32 = sum32;

function sum32_3(a, b, c) {
  return (a + b + c) >>> 0;
}
utils.sum32_3 = sum32_3;

function sum32_4(a, b, c, d) {
  return (a + b + c + d) >>> 0;
}
utils.sum32_4 = sum32_4;

function sum32_5(a, b, c, d, e) {
  return (a + b + c + d + e) >>> 0;
}
utils.sum32_5 = sum32_5;

function assert(cond, msg) {
  if (!cond)
    throw new Error(msg || 'Assertion failed');
}
utils.assert = assert;

utils.inherits = inherits;

function sum64(buf, pos, ah, al) {
  var bh = buf[pos];
  var bl = buf[pos + 1];

  var lo = (al + bl) >>> 0;
  var hi = (lo < al ? 1 : 0) + ah + bh;
  buf[pos] = hi >>> 0;
  buf[pos + 1] = lo;
}
exports.sum64 = sum64;

function sum64_hi(ah, al, bh, bl) {
  var lo = (al + bl) >>> 0;
  var hi = (lo < al ? 1 : 0) + ah + bh;
  return hi >>> 0;
};
exports.sum64_hi = sum64_hi;

function sum64_lo(ah, al, bh, bl) {
  var lo = al + bl;
  return lo >>> 0;
};
exports.sum64_lo = sum64_lo;

function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
  var carry = 0;
  var lo = al;
  lo = (lo + bl) >>> 0;
  carry += lo < al ? 1 : 0;
  lo = (lo + cl) >>> 0;
  carry += lo < cl ? 1 : 0;
  lo = (lo + dl) >>> 0;
  carry += lo < dl ? 1 : 0;

  var hi = ah + bh + ch + dh + carry;
  return hi >>> 0;
};
exports.sum64_4_hi = sum64_4_hi;

function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
  var lo = al + bl + cl + dl;
  return lo >>> 0;
};
exports.sum64_4_lo = sum64_4_lo;

function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
  var carry = 0;
  var lo = al;
  lo = (lo + bl) >>> 0;
  carry += lo < al ? 1 : 0;
  lo = (lo + cl) >>> 0;
  carry += lo < cl ? 1 : 0;
  lo = (lo + dl) >>> 0;
  carry += lo < dl ? 1 : 0;
  lo = (lo + el) >>> 0;
  carry += lo < el ? 1 : 0;

  var hi = ah + bh + ch + dh + eh + carry;
  return hi >>> 0;
};
exports.sum64_5_hi = sum64_5_hi;

function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
  var lo = al + bl + cl + dl + el;

  return lo >>> 0;
};
exports.sum64_5_lo = sum64_5_lo;

function rotr64_hi(ah, al, num) {
  var r = (al << (32 - num)) | (ah >>> num);
  return r >>> 0;
};
exports.rotr64_hi = rotr64_hi;

function rotr64_lo(ah, al, num) {
  var r = (ah << (32 - num)) | (al >>> num);
  return r >>> 0;
};
exports.rotr64_lo = rotr64_lo;

function shr64_hi(ah, al, num) {
  return ah >>> num;
};
exports.shr64_hi = shr64_hi;

function shr64_lo(ah, al, num) {
  var r = (ah << (32 - num)) | (al >>> num);
  return r >>> 0;
};
exports.shr64_lo = shr64_lo;

},{"inherits":377}],241:[function(require,module,exports){
module.exports={
  "name": "elliptic",
  "version": "6.2.0",
  "description": "EC cryptography",
  "main": "lib/elliptic.js",
  "files": [
    "lib"
  ],
  "scripts": {
    "test": "make lint && istanbul test _mocha --reporter=spec test/*-test.js",
    "coveralls": "cat ./coverage/lcov.info | coveralls"
  },
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/indutny/elliptic.git"
  },
  "keywords": [
    "EC",
    "Elliptic",
    "curve",
    "Cryptography"
  ],
  "author": {
    "name": "Fedor Indutny",
    "email": "fedor@indutny.com"
  },
  "license": "MIT",
  "bugs": {
    "url": "https://github.com/indutny/elliptic/issues"
  },
  "homepage": "https://github.com/indutny/elliptic",
  "devDependencies": {
    "browserify": "^3.44.2",
    "coveralls": "^2.11.3",
    "istanbul": "^0.3.17",
    "jscs": "^1.11.3",
    "jshint": "^2.6.0",
    "mocha": "^2.1.0",
    "uglify-js": "^2.4.13"
  },
  "dependencies": {
    "bn.js": "^4.0.0",
    "brorand": "^1.0.1",
    "hash.js": "^1.0.0",
    "inherits": "^2.0.1"
  },
  "gitHead": "6d25d373141cade9f71404cc18a2b407849bd418",
  "_id": "elliptic@6.2.0",
  "_shasum": "695e7233fee853883f19d6c103c3cffdb1527e12",
  "_from": "elliptic@^6.0.0",
  "_npmVersion": "3.3.12",
  "_nodeVersion": "5.4.1",
  "_npmUser": {
    "name": "indutny",
    "email": "fedor@indutny.com"
  },
  "dist": {
    "shasum": "695e7233fee853883f19d6c103c3cffdb1527e12",
    "tarball": "http://registry.npmjs.org/elliptic/-/elliptic-6.2.0.tgz"
  },
  "maintainers": [
    {
      "name": "indutny",
      "email": "fedor@indutny.com"
    }
  ],
  "directories": {},
  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.2.0.tgz",
  "readme": "ERROR: No README data found!"
}

},{}],242:[function(require,module,exports){
module.exports={"2.16.840.1.101.3.4.1.1": "aes-128-ecb",
"2.16.840.1.101.3.4.1.2": "aes-128-cbc",
"2.16.840.1.101.3.4.1.3": "aes-128-ofb",
"2.16.840.1.101.3.4.1.4": "aes-128-cfb",
"2.16.840.1.101.3.4.1.21": "aes-192-ecb",
"2.16.840.1.101.3.4.1.22": "aes-192-cbc",
"2.16.840.1.101.3.4.1.23": "aes-192-ofb",
"2.16.840.1.101.3.4.1.24": "aes-192-cfb",
"2.16.840.1.101.3.4.1.41": "aes-256-ecb",
"2.16.840.1.101.3.4.1.42": "aes-256-cbc",
"2.16.840.1.101.3.4.1.43": "aes-256-ofb",
"2.16.840.1.101.3.4.1.44": "aes-256-cfb"
}
},{}],243:[function(require,module,exports){
// from https://github.com/indutny/self-signed/blob/gh-pages/lib/asn1.js
// Fedor, you are amazing.

var asn1 = require('asn1.js')

var RSAPrivateKey = asn1.define('RSAPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('modulus').int(),
    this.key('publicExponent').int(),
    this.key('privateExponent').int(),
    this.key('prime1').int(),
    this.key('prime2').int(),
    this.key('exponent1').int(),
    this.key('exponent2').int(),
    this.key('coefficient').int()
  )
})
exports.RSAPrivateKey = RSAPrivateKey

var RSAPublicKey = asn1.define('RSAPublicKey', function () {
  this.seq().obj(
    this.key('modulus').int(),
    this.key('publicExponent').int()
  )
})
exports.RSAPublicKey = RSAPublicKey

var PublicKey = asn1.define('SubjectPublicKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPublicKey').bitstr()
  )
})
exports.PublicKey = PublicKey

var AlgorithmIdentifier = asn1.define('AlgorithmIdentifier', function () {
  this.seq().obj(
    this.key('algorithm').objid(),
    this.key('none').null_().optional(),
    this.key('curve').objid().optional(),
    this.key('params').seq().obj(
      this.key('p').int(),
      this.key('q').int(),
      this.key('g').int()
    ).optional()
  )
})

var PrivateKeyInfo = asn1.define('PrivateKeyInfo', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('algorithm').use(AlgorithmIdentifier),
    this.key('subjectPrivateKey').octstr()
  )
})
exports.PrivateKey = PrivateKeyInfo
var EncryptedPrivateKeyInfo = asn1.define('EncryptedPrivateKeyInfo', function () {
  this.seq().obj(
    this.key('algorithm').seq().obj(
      this.key('id').objid(),
      this.key('decrypt').seq().obj(
        this.key('kde').seq().obj(
          this.key('id').objid(),
          this.key('kdeparams').seq().obj(
            this.key('salt').octstr(),
            this.key('iters').int()
          )
        ),
        this.key('cipher').seq().obj(
          this.key('algo').objid(),
          this.key('iv').octstr()
        )
      )
    ),
    this.key('subjectPrivateKey').octstr()
  )
})

exports.EncryptedPrivateKey = EncryptedPrivateKeyInfo

var DSAPrivateKey = asn1.define('DSAPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('p').int(),
    this.key('q').int(),
    this.key('g').int(),
    this.key('pub_key').int(),
    this.key('priv_key').int()
  )
})
exports.DSAPrivateKey = DSAPrivateKey

exports.DSAparam = asn1.define('DSAparam', function () {
  this.int()
})
var ECPrivateKey = asn1.define('ECPrivateKey', function () {
  this.seq().obj(
    this.key('version').int(),
    this.key('privateKey').octstr(),
    this.key('parameters').optional().explicit(0).use(ECParameters),
    this.key('publicKey').optional().explicit(1).bitstr()
  )
})
exports.ECPrivateKey = ECPrivateKey
var ECParameters = asn1.define('ECParameters', function () {
  this.choice({
    namedCurve: this.objid()
  })
})

exports.signature = asn1.define('signature', function () {
  this.seq().obj(
    this.key('r').int(),
    this.key('s').int()
  )
})

},{"asn1.js":246}],244:[function(require,module,exports){
(function (Buffer){
// adapted from https://github.com/apatil/pemstrip
var findProc = /Proc-Type: 4,ENCRYPTED\r?\nDEK-Info: AES-((?:128)|(?:192)|(?:256))-CBC,([0-9A-H]+)\r?\n\r?\n([0-9A-z\n\r\+\/\=]+)\r?\n/m
var startRegex = /^-----BEGIN (.*) KEY-----\r?\n/m
var fullRegex = /^-----BEGIN (.*) KEY-----\r?\n([0-9A-z\n\r\+\/\=]+)\r?\n-----END \1 KEY-----$/m
var evp = require('evp_bytestokey')
var ciphers = require('browserify-aes')
module.exports = function (okey, password) {
  var key = okey.toString()
  var match = key.match(findProc)
  var decrypted
  if (!match) {
    var match2 = key.match(fullRegex)
    decrypted = new Buffer(match2[2].replace(/\r?\n/g, ''), 'base64')
  } else {
    var suite = 'aes' + match[1]
    var iv = new Buffer(match[2], 'hex')
    var cipherText = new Buffer(match[3].replace(/\r?\n/g, ''), 'base64')
    var cipherKey = evp(password, iv.slice(0, 8), parseInt(match[1], 10)).key
    var out = []
    var cipher = ciphers.createDecipheriv(suite, cipherKey, iv)
    out.push(cipher.update(cipherText))
    out.push(cipher.final())
    decrypted = Buffer.concat(out)
  }
  var tag = key.match(startRegex)[1] + ' KEY'
  return {
    tag: tag,
    data: decrypted
  }
}

}).call(this,require("buffer").Buffer)
},{"browserify-aes":263,"buffer":177,"evp_bytestokey":278}],245:[function(require,module,exports){
(function (Buffer){
var asn1 = require('./asn1')
var aesid = require('./aesid.json')
var fixProc = require('./fixProc')
var ciphers = require('browserify-aes')
var compat = require('pbkdf2')
module.exports = parseKeys

function parseKeys (buffer) {
  var password
  if (typeof buffer === 'object' && !Buffer.isBuffer(buffer)) {
    password = buffer.passphrase
    buffer = buffer.key
  }
  if (typeof buffer === 'string') {
    buffer = new Buffer(buffer)
  }

  var stripped = fixProc(buffer, password)

  var type = stripped.tag
  var data = stripped.data
  var subtype, ndata
  switch (type) {
    case 'PUBLIC KEY':
      ndata = asn1.PublicKey.decode(data, 'der')
      subtype = ndata.algorithm.algorithm.join('.')
      switch (subtype) {
        case '1.2.840.113549.1.1.1':
          return asn1.RSAPublicKey.decode(ndata.subjectPublicKey.data, 'der')
        case '1.2.840.10045.2.1':
          ndata.subjectPrivateKey = ndata.subjectPublicKey
          return {
            type: 'ec',
            data: ndata
          }
        case '1.2.840.10040.4.1':
          ndata.algorithm.params.pub_key = asn1.DSAparam.decode(ndata.subjectPublicKey.data, 'der')
          return {
            type: 'dsa',
            data: ndata.algorithm.params
          }
        default: throw new Error('unknown key id ' + subtype)
      }
      throw new Error('unknown key type ' + type)
    case 'ENCRYPTED PRIVATE KEY':
      data = asn1.EncryptedPrivateKey.decode(data, 'der')
      data = decrypt(data, password)
      // falls through
    case 'PRIVATE KEY':
      ndata = asn1.PrivateKey.decode(data, 'der')
      subtype = ndata.algorithm.algorithm.join('.')
      switch (subtype) {
        case '1.2.840.113549.1.1.1':
          return asn1.RSAPrivateKey.decode(ndata.subjectPrivateKey, 'der')
        case '1.2.840.10045.2.1':
          return {
            curve: ndata.algorithm.curve,
            privateKey: asn1.ECPrivateKey.decode(ndata.subjectPrivateKey, 'der').privateKey
          }
        case '1.2.840.10040.4.1':
          ndata.algorithm.params.priv_key = asn1.DSAparam.decode(ndata.subjectPrivateKey, 'der')
          return {
            type: 'dsa',
            params: ndata.algorithm.params
          }
        default: throw new Error('unknown key id ' + subtype)
      }
      throw new Error('unknown key type ' + type)
    case 'RSA PUBLIC KEY':
      return asn1.RSAPublicKey.decode(data, 'der')
    case 'RSA PRIVATE KEY':
      return asn1.RSAPrivateKey.decode(data, 'der')
    case 'DSA PRIVATE KEY':
      return {
        type: 'dsa',
        params: asn1.DSAPrivateKey.decode(data, 'der')
      }
    case 'EC PRIVATE KEY':
      data = asn1.ECPrivateKey.decode(data, 'der')
      return {
        curve: data.parameters.value,
        privateKey: data.privateKey
      }
    default: throw new Error('unknown key type ' + type)
  }
}
parseKeys.signature = asn1.signature
function decrypt (data, password) {
  var salt = data.algorithm.decrypt.kde.kdeparams.salt
  var iters = parseInt(data.algorithm.decrypt.kde.kdeparams.iters.toString(), 10)
  var algo = aesid[data.algorithm.decrypt.cipher.algo.join('.')]
  var iv = data.algorithm.decrypt.cipher.iv
  var cipherText = data.subjectPrivateKey
  var keylen = parseInt(algo.split('-')[1], 10) / 8
  var key = compat.pbkdf2Sync(password, salt, iters, keylen)
  var cipher = ciphers.createDecipheriv(algo, key, iv)
  var out = []
  out.push(cipher.update(cipherText))
  out.push(cipher.final())
  return Buffer.concat(out)
}

}).call(this,require("buffer").Buffer)
},{"./aesid.json":242,"./asn1":243,"./fixProc":244,"browserify-aes":263,"buffer":177,"pbkdf2":328}],246:[function(require,module,exports){
var asn1 = exports;

asn1.bignum = require('bn.js');

asn1.define = require('./asn1/api').define;
asn1.base = require('./asn1/base');
asn1.constants = require('./asn1/constants');
asn1.decoders = require('./asn1/decoders');
asn1.encoders = require('./asn1/encoders');

},{"./asn1/api":247,"./asn1/base":249,"./asn1/constants":253,"./asn1/decoders":255,"./asn1/encoders":258,"bn.js":216}],247:[function(require,module,exports){
var asn1 = require('../asn1');
var inherits = require('inherits');

var api = exports;

api.define = function define(name, body) {
  return new Entity(name, body);
};

function Entity(name, body) {
  this.name = name;
  this.body = body;

  this.decoders = {};
  this.encoders = {};
};

Entity.prototype._createNamed = function createNamed(base) {
  var named;
  try {
    named = require('vm').runInThisContext(
      '(function ' + this.name + '(entity) {\n' +
      '  this._initNamed(entity);\n' +
      '})'
    );
  } catch (e) {
    named = function (entity) {
      this._initNamed(entity);
    };
  }
  inherits(named, base);
  named.prototype._initNamed = function initnamed(entity) {
    base.call(this, entity);
  };

  return new named(this);
};

Entity.prototype._getDecoder = function _getDecoder(enc) {
  // Lazily create decoder
  if (!this.decoders.hasOwnProperty(enc))
    this.decoders[enc] = this._createNamed(asn1.decoders[enc]);
  return this.decoders[enc];
};

Entity.prototype.decode = function decode(data, enc, options) {
  return this._getDecoder(enc).decode(data, options);
};

Entity.prototype._getEncoder = function _getEncoder(enc) {
  // Lazily create encoder
  if (!this.encoders.hasOwnProperty(enc))
    this.encoders[enc] = this._createNamed(asn1.encoders[enc]);
  return this.encoders[enc];
};

Entity.prototype.encode = function encode(data, enc, /* internal */ reporter) {
  return this._getEncoder(enc).encode(data, reporter);
};

},{"../asn1":246,"inherits":377,"vm":411}],248:[function(require,module,exports){
var inherits = require('inherits');
var Reporter = require('../base').Reporter;
var Buffer = require('buffer').Buffer;

function DecoderBuffer(base, options) {
  Reporter.call(this, options);
  if (!Buffer.isBuffer(base)) {
    this.error('Input not Buffer');
    return;
  }

  this.base = base;
  this.offset = 0;
  this.length = base.length;
}
inherits(DecoderBuffer, Reporter);
exports.DecoderBuffer = DecoderBuffer;

DecoderBuffer.prototype.save = function save() {
  return { offset: this.offset, reporter: Reporter.prototype.save.call(this) };
};

DecoderBuffer.prototype.restore = function restore(save) {
  // Return skipped data
  var res = new DecoderBuffer(this.base);
  res.offset = save.offset;
  res.length = this.offset;

  this.offset = save.offset;
  Reporter.prototype.restore.call(this, save.reporter);

  return res;
};

DecoderBuffer.prototype.isEmpty = function isEmpty() {
  return this.offset === this.length;
};

DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) {
  if (this.offset + 1 <= this.length)
    return this.base.readUInt8(this.offset++, true);
  else
    return this.error(fail || 'DecoderBuffer overrun');
}

DecoderBuffer.prototype.skip = function skip(bytes, fail) {
  if (!(this.offset + bytes <= this.length))
    return this.error(fail || 'DecoderBuffer overrun');

  var res = new DecoderBuffer(this.base);

  // Share reporter state
  res._reporterState = this._reporterState;

  res.offset = this.offset;
  res.length = this.offset + bytes;
  this.offset += bytes;
  return res;
}

DecoderBuffer.prototype.raw = function raw(save) {
  return this.base.slice(save ? save.offset : this.offset, this.length);
}

function EncoderBuffer(value, reporter) {
  if (Array.isArray(value)) {
    this.length = 0;
    this.value = value.map(function(item) {
      if (!(item instanceof EncoderBuffer))
        item = new EncoderBuffer(item, reporter);
      this.length += item.length;
      return item;
    }, this);
  } else if (typeof value === 'number') {
    if (!(0 <= value && value <= 0xff))
      return reporter.error('non-byte EncoderBuffer value');
    this.value = value;
    this.length = 1;
  } else if (typeof value === 'string') {
    this.value = value;
    this.length = Buffer.byteLength(value);
  } else if (Buffer.isBuffer(value)) {
    this.value = value;
    this.length = value.length;
  } else {
    return reporter.error('Unsupported type: ' + typeof value);
  }
}
exports.EncoderBuffer = EncoderBuffer;

EncoderBuffer.prototype.join = function join(out, offset) {
  if (!out)
    out = new Buffer(this.length);
  if (!offset)
    offset = 0;

  if (this.length === 0)
    return out;

  if (Array.isArray(this.value)) {
    this.value.forEach(function(item) {
      item.join(out, offset);
      offset += item.length;
    });
  } else {
    if (typeof this.value === 'number')
      out[offset] = this.value;
    else if (typeof this.value === 'string')
      out.write(this.value, offset);
    else if (Buffer.isBuffer(this.value))
      this.value.copy(out, offset);
    offset += this.length;
  }

  return out;
};

},{"../base":249,"buffer":177,"inherits":377}],249:[function(require,module,exports){
var base = exports;

base.Reporter = require('./reporter').Reporter;
base.DecoderBuffer = require('./buffer').DecoderBuffer;
base.EncoderBuffer = require('./buffer').EncoderBuffer;
base.Node = require('./node');

},{"./buffer":248,"./node":250,"./reporter":251}],250:[function(require,module,exports){
var Reporter = require('../base').Reporter;
var EncoderBuffer = require('../base').EncoderBuffer;
var assert = require('minimalistic-assert');

// Supported tags
var tags = [
  'seq', 'seqof', 'set', 'setof', 'octstr', 'bitstr', 'objid', 'bool',
  'gentime', 'utctime', 'null_', 'enum', 'int', 'ia5str', 'utf8str', 'bmpstr',
  'numstr', 'printstr'
];

// Public methods list
var methods = [
  'key', 'obj', 'use', 'optional', 'explicit', 'implicit', 'def', 'choice',
  'any'
].concat(tags);

// Overrided methods list
var overrided = [
  '_peekTag', '_decodeTag', '_use',
  '_decodeStr', '_decodeObjid', '_decodeTime',
  '_decodeNull', '_decodeInt', '_decodeBool', '_decodeList',

  '_encodeComposite', '_encodeStr', '_encodeObjid', '_encodeTime',
  '_encodeNull', '_encodeInt', '_encodeBool'
];

function Node(enc, parent) {
  var state = {};
  this._baseState = state;

  state.enc = enc;

  state.parent = parent || null;
  state.children = null;

  // State
  state.tag = null;
  state.args = null;
  state.reverseArgs = null;
  state.choice = null;
  state.optional = false;
  state.any = false;
  state.obj = false;
  state.use = null;
  state.useDecoder = null;
  state.key = null;
  state['default'] = null;
  state.explicit = null;
  state.implicit = null;

  // Should create new instance on each method
  if (!state.parent) {
    state.children = [];
    this._wrap();
  }
}
module.exports = Node;

var stateProps = [
  'enc', 'parent', 'children', 'tag', 'args', 'reverseArgs', 'choice',
  'optional', 'any', 'obj', 'use', 'alteredUse', 'key', 'default', 'explicit',
  'implicit'
];

Node.prototype.clone = function clone() {
  var state = this._baseState;
  var cstate = {};
  stateProps.forEach(function(prop) {
    cstate[prop] = state[prop];
  });
  var res = new this.constructor(cstate.parent);
  res._baseState = cstate;
  return res;
};

Node.prototype._wrap = function wrap() {
  var state = this._baseState;
  methods.forEach(function(method) {
    this[method] = function _wrappedMethod() {
      var clone = new this.constructor(this);
      state.children.push(clone);
      return clone[method].apply(clone, arguments);
    };
  }, this);
};

Node.prototype._init = function init(body) {
  var state = this._baseState;

  assert(state.parent === null);
  body.call(this);

  // Filter children
  state.children = state.children.filter(function(child) {
    return child._baseState.parent === this;
  }, this);
  assert.equal(state.children.length, 1, 'Root node can have only one child');
};

Node.prototype._useArgs = function useArgs(args) {
  var state = this._baseState;

  // Filter children and args
  var children = args.filter(function(arg) {
    return arg instanceof this.constructor;
  }, this);
  args = args.filter(function(arg) {
    return !(arg instanceof this.constructor);
  }, this);

  if (children.length !== 0) {
    assert(state.children === null);
    state.children = children;

    // Replace parent to maintain backward link
    children.forEach(function(child) {
      child._baseState.parent = this;
    }, this);
  }
  if (args.length !== 0) {
    assert(state.args === null);
    state.args = args;
    state.reverseArgs = args.map(function(arg) {
      if (typeof arg !== 'object' || arg.constructor !== Object)
        return arg;

      var res = {};
      Object.keys(arg).forEach(function(key) {
        if (key == (key | 0))
          key |= 0;
        var value = arg[key];
        res[value] = key;
      });
      return res;
    });
  }
};

//
// Overrided methods
//

overrided.forEach(function(method) {
  Node.prototype[method] = function _overrided() {
    var state = this._baseState;
    throw new Error(method + ' not implemented for encoding: ' + state.enc);
  };
});

//
// Public methods
//

tags.forEach(function(tag) {
  Node.prototype[tag] = function _tagMethod() {
    var state = this._baseState;
    var args = Array.prototype.slice.call(arguments);

    assert(state.tag === null);
    state.tag = tag;

    this._useArgs(args);

    return this;
  };
});

Node.prototype.use = function use(item) {
  var state = this._baseState;

  assert(state.use === null);
  state.use = item;

  return this;
};

Node.prototype.optional = function optional() {
  var state = this._baseState;

  state.optional = true;

  return this;
};

Node.prototype.def = function def(val) {
  var state = this._baseState;

  assert(state['default'] === null);
  state['default'] = val;
  state.optional = true;

  return this;
};

Node.prototype.explicit = function explicit(num) {
  var state = this._baseState;

  assert(state.explicit === null && state.implicit === null);
  state.explicit = num;

  return this;
};

Node.prototype.implicit = function implicit(num) {
  var state = this._baseState;

  assert(state.explicit === null && state.implicit === null);
  state.implicit = num;

  return this;
};

Node.prototype.obj = function obj() {
  var state = this._baseState;
  var args = Array.prototype.slice.call(arguments);

  state.obj = true;

  if (args.length !== 0)
    this._useArgs(args);

  return this;
};

Node.prototype.key = function key(newKey) {
  var state = this._baseState;

  assert(state.key === null);
  state.key = newKey;

  return this;
};

Node.prototype.any = function any() {
  var state = this._baseState;

  state.any = true;

  return this;
};

Node.prototype.choice = function choice(obj) {
  var state = this._baseState;

  assert(state.choice === null);
  state.choice = obj;
  this._useArgs(Object.keys(obj).map(function(key) {
    return obj[key];
  }));

  return this;
};

//
// Decoding
//

Node.prototype._decode = function decode(input) {
  var state = this._baseState;

  // Decode root node
  if (state.parent === null)
    return input.wrapResult(state.children[0]._decode(input));

  var result = state['default'];
  var present = true;

  var prevKey;
  if (state.key !== null)
    prevKey = input.enterKey(state.key);

  // Check if tag is there
  if (state.optional) {
    var tag = null;
    if (state.explicit !== null)
      tag = state.explicit;
    else if (state.implicit !== null)
      tag = state.implicit;
    else if (state.tag !== null)
      tag = state.tag;

    if (tag === null && !state.any) {
      // Trial and Error
      var save = input.save();
      try {
        if (state.choice === null)
          this._decodeGeneric(state.tag, input);
        else
          this._decodeChoice(input);
        present = true;
      } catch (e) {
        present = false;
      }
      input.restore(save);
    } else {
      present = this._peekTag(input, tag, state.any);

      if (input.isError(present))
        return present;
    }
  }

  // Push object on stack
  var prevObj;
  if (state.obj && present)
    prevObj = input.enterObject();

  if (present) {
    // Unwrap explicit values
    if (state.explicit !== null) {
      var explicit = this._decodeTag(input, state.explicit);
      if (input.isError(explicit))
        return explicit;
      input = explicit;
    }

    // Unwrap implicit and normal values
    if (state.use === null && state.choice === null) {
      if (state.any)
        var save = input.save();
      var body = this._decodeTag(
        input,
        state.implicit !== null ? state.implicit : state.tag,
        state.any
      );
      if (input.isError(body))
        return body;

      if (state.any)
        result = input.raw(save);
      else
        input = body;
    }

    // Select proper method for tag
    if (state.any)
      result = result;
    else if (state.choice === null)
      result = this._decodeGeneric(state.tag, input);
    else
      result = this._decodeChoice(input);

    if (input.isError(result))
      return result;

    // Decode children
    if (!state.any && state.choice === null && state.children !== null) {
      var fail = state.children.some(function decodeChildren(child) {
        // NOTE: We are ignoring errors here, to let parser continue with other
        // parts of encoded data
        child._decode(input);
      });
      if (fail)
        return err;
    }
  }

  // Pop object
  if (state.obj && present)
    result = input.leaveObject(prevObj);

  // Set key
  if (state.key !== null && (result !== null || present === true))
    input.leaveKey(prevKey, state.key, result);

  return result;
};

Node.prototype._decodeGeneric = function decodeGeneric(tag, input) {
  var state = this._baseState;

  if (tag === 'seq' || tag === 'set')
    return null;
  if (tag === 'seqof' || tag === 'setof')
    return this._decodeList(input, tag, state.args[0]);
  else if (tag === 'octstr' || tag === 'bitstr')
    return this._decodeStr(input, tag);
  else if (tag === 'ia5str' || tag === 'utf8str' || tag === 'bmpstr')
    return this._decodeStr(input, tag);
  else if (tag === 'numstr' || tag === 'printstr')
    return this._decodeStr(input, tag);
  else if (tag === 'objid' && state.args)
    return this._decodeObjid(input, state.args[0], state.args[1]);
  else if (tag === 'objid')
    return this._decodeObjid(input, null, null);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._decodeTime(input, tag);
  else if (tag === 'null_')
    return this._decodeNull(input);
  else if (tag === 'bool')
    return this._decodeBool(input);
  else if (tag === 'int' || tag === 'enum')
    return this._decodeInt(input, state.args && state.args[0]);
  else if (state.use !== null)
    return this._getUse(state.use, input._reporterState.obj)._decode(input);
  else
    return input.error('unknown tag: ' + tag);

  return null;
};

Node.prototype._getUse = function _getUse(entity, obj) {

  var state = this._baseState;
  // Create altered use decoder if implicit is set
  state.useDecoder = this._use(entity, obj);
  assert(state.useDecoder._baseState.parent === null);
  state.useDecoder = state.useDecoder._baseState.children[0];
  if (state.implicit !== state.useDecoder._baseState.implicit) {
    state.useDecoder = state.useDecoder.clone();
    state.useDecoder._baseState.implicit = state.implicit;
  }
  return state.useDecoder;
};

Node.prototype._decodeChoice = function decodeChoice(input) {
  var state = this._baseState;
  var result = null;
  var match = false;

  Object.keys(state.choice).some(function(key) {
    var save = input.save();
    var node = state.choice[key];
    try {
      var value = node._decode(input);
      if (input.isError(value))
        return false;

      result = { type: key, value: value };
      match = true;
    } catch (e) {
      input.restore(save);
      return false;
    }
    return true;
  }, this);

  if (!match)
    return input.error('Choice not matched');

  return result;
};

//
// Encoding
//

Node.prototype._createEncoderBuffer = function createEncoderBuffer(data) {
  return new EncoderBuffer(data, this.reporter);
};

Node.prototype._encode = function encode(data, reporter, parent) {
  var state = this._baseState;
  if (state['default'] !== null && state['default'] === data)
    return;

  var result = this._encodeValue(data, reporter, parent);
  if (result === undefined)
    return;

  if (this._skipDefault(result, reporter, parent))
    return;

  return result;
};

Node.prototype._encodeValue = function encode(data, reporter, parent) {
  var state = this._baseState;

  // Decode root node
  if (state.parent === null)
    return state.children[0]._encode(data, reporter || new Reporter());

  var result = null;
  var present = true;

  // Set reporter to share it with a child class
  this.reporter = reporter;

  // Check if data is there
  if (state.optional && data === undefined) {
    if (state['default'] !== null)
      data = state['default']
    else
      return;
  }

  // For error reporting
  var prevKey;

  // Encode children first
  var content = null;
  var primitive = false;
  if (state.any) {
    // Anything that was given is translated to buffer
    result = this._createEncoderBuffer(data);
  } else if (state.choice) {
    result = this._encodeChoice(data, reporter);
  } else if (state.children) {
    content = state.children.map(function(child) {
      if (child._baseState.tag === 'null_')
        return child._encode(null, reporter, data);

      if (child._baseState.key === null)
        return reporter.error('Child should have a key');
      var prevKey = reporter.enterKey(child._baseState.key);

      if (typeof data !== 'object')
        return reporter.error('Child expected, but input is not object');

      var res = child._encode(data[child._baseState.key], reporter, data);
      reporter.leaveKey(prevKey);

      return res;
    }, this).filter(function(child) {
      return child;
    });

    content = this._createEncoderBuffer(content);
  } else {
    if (state.tag === 'seqof' || state.tag === 'setof') {
      // TODO(indutny): this should be thrown on DSL level
      if (!(state.args && state.args.length === 1))
        return reporter.error('Too many args for : ' + state.tag);

      if (!Array.isArray(data))
        return reporter.error('seqof/setof, but data is not Array');

      var child = this.clone();
      child._baseState.implicit = null;
      content = this._createEncoderBuffer(data.map(function(item) {
        var state = this._baseState;

        return this._getUse(state.args[0], data)._encode(item, reporter);
      }, child));
    } else if (state.use !== null) {
      result = this._getUse(state.use, parent)._encode(data, reporter);
    } else {
      content = this._encodePrimitive(state.tag, data);
      primitive = true;
    }
  }

  // Encode data itself
  var result;
  if (!state.any && state.choice === null) {
    var tag = state.implicit !== null ? state.implicit : state.tag;
    var cls = state.implicit === null ? 'universal' : 'context';

    if (tag === null) {
      if (state.use === null)
        reporter.error('Tag could be ommited only for .use()');
    } else {
      if (state.use === null)
        result = this._encodeComposite(tag, primitive, cls, content);
    }
  }

  // Wrap in explicit
  if (state.explicit !== null)
    result = this._encodeComposite(state.explicit, false, 'context', result);

  return result;
};

Node.prototype._encodeChoice = function encodeChoice(data, reporter) {
  var state = this._baseState;

  var node = state.choice[data.type];
  if (!node) {
    assert(
        false,
        data.type + ' not found in ' +
            JSON.stringify(Object.keys(state.choice)));
  }
  return node._encode(data.value, reporter);
};

Node.prototype._encodePrimitive = function encodePrimitive(tag, data) {
  var state = this._baseState;

  if (tag === 'octstr' || tag === 'bitstr' || tag === 'ia5str')
    return this._encodeStr(data, tag);
  else if (tag === 'utf8str' || tag === 'bmpstr')
    return this._encodeStr(data, tag);
  else if (tag === 'numstr' || tag === 'printstr')
    return this._encodeStr(data, tag);
  else if (tag === 'objid' && state.args)
    return this._encodeObjid(data, state.reverseArgs[0], state.args[1]);
  else if (tag === 'objid')
    return this._encodeObjid(data, null, null);
  else if (tag === 'gentime' || tag === 'utctime')
    return this._encodeTime(data, tag);
  else if (tag === 'null_')
    return this._encodeNull();
  else if (tag === 'int' || tag === 'enum')
    return this._encodeInt(data, state.args && state.reverseArgs[0]);
  else if (tag === 'bool')
    return this._encodeBool(data);
  else
    throw new Error('Unsupported tag: ' + tag);
};

Node.prototype._isNumstr = function isNumstr(str) {
  return /^[0-9 ]*$/.test(str);
};

Node.prototype._isPrintstr = function isPrintstr(str) {
  return /^[A-Za-z0-9 '\(\)\+,\-\.\/:=\?]*$/.test(str);
};
},{"../base":249,"minimalistic-assert":260}],251:[function(require,module,exports){
var inherits = require('inherits');

function Reporter(options) {
  this._reporterState = {
    obj: null,
    path: [],
    options: options || {},
    errors: []
  };
}
exports.Reporter = Reporter;

Reporter.prototype.isError = function isError(obj) {
  return obj instanceof ReporterError;
};

Reporter.prototype.save = function save() {
  var state = this._reporterState;

  return { obj: state.obj, pathLen: state.path.length };
};

Reporter.prototype.restore = function restore(data) {
  var state = this._reporterState;

  state.obj = data.obj;
  state.path = state.path.slice(0, data.pathLen);
};

Reporter.prototype.enterKey = function enterKey(key) {
  return this._reporterState.path.push(key);
};

Reporter.prototype.leaveKey = function leaveKey(index, key, value) {
  var state = this._reporterState;

  state.path = state.path.slice(0, index - 1);
  if (state.obj !== null)
    state.obj[key] = value;
};

Reporter.prototype.enterObject = function enterObject() {
  var state = this._reporterState;

  var prev = state.obj;
  state.obj = {};
  return prev;
};

Reporter.prototype.leaveObject = function leaveObject(prev) {
  var state = this._reporterState;

  var now = state.obj;
  state.obj = prev;
  return now;
};

Reporter.prototype.error = function error(msg) {
  var err;
  var state = this._reporterState;

  var inherited = msg instanceof ReporterError;
  if (inherited) {
    err = msg;
  } else {
    err = new ReporterError(state.path.map(function(elem) {
      return '[' + JSON.stringify(elem) + ']';
    }).join(''), msg.message || msg, msg.stack);
  }

  if (!state.options.partial)
    throw err;

  if (!inherited)
    state.errors.push(err);

  return err;
};

Reporter.prototype.wrapResult = function wrapResult(result) {
  var state = this._reporterState;
  if (!state.options.partial)
    return result;

  return {
    result: this.isError(result) ? null : result,
    errors: state.errors
  };
};

function ReporterError(path, msg) {
  this.path = path;
  this.rethrow(msg);
};
inherits(ReporterError, Error);

ReporterError.prototype.rethrow = function rethrow(msg) {
  this.message = msg + ' at: ' + (this.path || '(shallow)');
  Error.captureStackTrace(this, ReporterError);

  return this;
};

},{"inherits":377}],252:[function(require,module,exports){
var constants = require('../constants');

exports.tagClass = {
  0: 'universal',
  1: 'application',
  2: 'context',
  3: 'private'
};
exports.tagClassByName = constants._reverse(exports.tagClass);

exports.tag = {
  0x00: 'end',
  0x01: 'bool',
  0x02: 'int',
  0x03: 'bitstr',
  0x04: 'octstr',
  0x05: 'null_',
  0x06: 'objid',
  0x07: 'objDesc',
  0x08: 'external',
  0x09: 'real',
  0x0a: 'enum',
  0x0b: 'embed',
  0x0c: 'utf8str',
  0x0d: 'relativeOid',
  0x10: 'seq',
  0x11: 'set',
  0x12: 'numstr',
  0x13: 'printstr',
  0x14: 't61str',
  0x15: 'videostr',
  0x16: 'ia5str',
  0x17: 'utctime',
  0x18: 'gentime',
  0x19: 'graphstr',
  0x1a: 'iso646str',
  0x1b: 'genstr',
  0x1c: 'unistr',
  0x1d: 'charstr',
  0x1e: 'bmpstr'
};
exports.tagByName = constants._reverse(exports.tag);

},{"../constants":253}],253:[function(require,module,exports){
var constants = exports;

// Helper
constants._reverse = function reverse(map) {
  var res = {};

  Object.keys(map).forEach(function(key) {
    // Convert key to integer if it is stringified
    if ((key | 0) == key)
      key = key | 0;

    var value = map[key];
    res[value] = key;
  });

  return res;
};

constants.der = require('./der');

},{"./der":252}],254:[function(require,module,exports){
var inherits = require('inherits');

var asn1 = require('../../asn1');
var base = asn1.base;
var bignum = asn1.bignum;

// Import DER constants
var der = asn1.constants.der;

function DERDecoder(entity) {
  this.enc = 'der';
  this.name = entity.name;
  this.entity = entity;

  // Construct base tree
  this.tree = new DERNode();
  this.tree._init(entity.body);
};
module.exports = DERDecoder;

DERDecoder.prototype.decode = function decode(data, options) {
  if (!(data instanceof base.DecoderBuffer))
    data = new base.DecoderBuffer(data, options);

  return this.tree._decode(data, options);
};

// Tree methods

function DERNode(parent) {
  base.Node.call(this, 'der', parent);
}
inherits(DERNode, base.Node);

DERNode.prototype._peekTag = function peekTag(buffer, tag, any) {
  if (buffer.isEmpty())
    return false;

  var state = buffer.save();
  var decodedTag = derDecodeTag(buffer, 'Failed to peek tag: "' + tag + '"');
  if (buffer.isError(decodedTag))
    return decodedTag;

  buffer.restore(state);

  return decodedTag.tag === tag || decodedTag.tagStr === tag || any;
};

DERNode.prototype._decodeTag = function decodeTag(buffer, tag, any) {
  var decodedTag = derDecodeTag(buffer,
                                'Failed to decode tag of "' + tag + '"');
  if (buffer.isError(decodedTag))
    return decodedTag;

  var len = derDecodeLen(buffer,
                         decodedTag.primitive,
                         'Failed to get length of "' + tag + '"');

  // Failure
  if (buffer.isError(len))
    return len;

  if (!any &&
      decodedTag.tag !== tag &&
      decodedTag.tagStr !== tag &&
      decodedTag.tagStr + 'of' !== tag) {
    return buffer.error('Failed to match tag: "' + tag + '"');
  }

  if (decodedTag.primitive || len !== null)
    return buffer.skip(len, 'Failed to match body of: "' + tag + '"');

  // Indefinite length... find END tag
  var state = buffer.save();
  var res = this._skipUntilEnd(
      buffer,
      'Failed to skip indefinite length body: "' + this.tag + '"');
  if (buffer.isError(res))
    return res;

  len = buffer.offset - state.offset;
  buffer.restore(state);
  return buffer.skip(len, 'Failed to match body of: "' + tag + '"');
};

DERNode.prototype._skipUntilEnd = function skipUntilEnd(buffer, fail) {
  while (true) {
    var tag = derDecodeTag(buffer, fail);
    if (buffer.isError(tag))
      return tag;
    var len = derDecodeLen(buffer, tag.primitive, fail);
    if (buffer.isError(len))
      return len;

    var res;
    if (tag.primitive || len !== null)
      res = buffer.skip(len)
    else
      res = this._skipUntilEnd(buffer, fail);

    // Failure
    if (buffer.isError(res))
      return res;

    if (tag.tagStr === 'end')
      break;
  }
};

DERNode.prototype._decodeList = function decodeList(buffer, tag, decoder) {
  var result = [];
  while (!buffer.isEmpty()) {
    var possibleEnd = this._peekTag(buffer, 'end');
    if (buffer.isError(possibleEnd))
      return possibleEnd;

    var res = decoder.decode(buffer, 'der');
    if (buffer.isError(res) && possibleEnd)
      break;
    result.push(res);
  }
  return result;
};

DERNode.prototype._decodeStr = function decodeStr(buffer, tag) {
  if (tag === 'octstr') {
    return buffer.raw();
  } else if (tag === 'bitstr') {
    var unused = buffer.readUInt8();
    if (buffer.isError(unused))
      return unused;

    return { unused: unused, data: buffer.raw() };
  } else if (tag === 'ia5str' || tag === 'utf8str') {
    return buffer.raw().toString();
  } else if(tag === 'numstr') {
    var numstr = buffer.raw().toString('ascii');
    if (!this._isNumstr(numstr)) {
      return buffer.error('Decoding of string type: ' +
                          'numstr unsupported characters');
    }

    return numstr;
  } else if (tag === 'printstr') {
    var printstr = buffer.raw().toString('ascii');
    if (!this._isPrintstr(printstr)) {
      return buffer.error('Decoding of string type: ' +
                          'printstr unsupported characters');
    }

    return printstr;
  } else if(tag === 'bmpstr') {
    var raw = buffer.raw();
    if (raw.length % 2 === 1)
      return buffer.error('Decoding of string type: bmpstr length mismatch');

    var str = '';
    for (var i = 0; i < raw.length / 2; i++) {
      str += String.fromCharCode(raw.readUInt16BE(i * 2));
    }
    return str;
  } else {
    return buffer.error('Decoding of string type: ' + tag + ' unsupported');
  }
};

DERNode.prototype._decodeObjid = function decodeObjid(buffer, values, relative) {
  var identifiers = [];
  var ident = 0;
  while (!buffer.isEmpty()) {
    var subident = buffer.readUInt8();
    ident <<= 7;
    ident |= subident & 0x7f;
    if ((subident & 0x80) === 0) {
      identifiers.push(ident);
      ident = 0;
    }
  }
  if (subident & 0x80)
    identifiers.push(ident);

  var first = (identifiers[0] / 40) | 0;
  var second = identifiers[0] % 40;

  if (relative)
    result = identifiers;
  else
    result = [first, second].concat(identifiers.slice(1));

  if (values) {
    var tmp = values[result.join(' ')];
    if (tmp === undefined)
      tmp = values[result.join('.')];
    if (tmp !== undefined)
      result = tmp;
  }

  return result;
};

DERNode.prototype._decodeTime = function decodeTime(buffer, tag) {
  var str = buffer.raw().toString();
  if (tag === 'gentime') {
    var year = str.slice(0, 4) | 0;
    var mon = str.slice(4, 6) | 0;
    var day = str.slice(6, 8) | 0;
    var hour = str.slice(8, 10) | 0;
    var min = str.slice(10, 12) | 0;
    var sec = str.slice(12, 14) | 0;
  } else if (tag === 'utctime') {
    var year = str.slice(0, 2) | 0;
    var mon = str.slice(2, 4) | 0;
    var day = str.slice(4, 6) | 0;
    var hour = str.slice(6, 8) | 0;
    var min = str.slice(8, 10) | 0;
    var sec = str.slice(10, 12) | 0;
    if (year < 70)
      year = 2000 + year;
    else
      year = 1900 + year;
  } else {
    return buffer.error('Decoding ' + tag + ' time is not supported yet');
  }

  return Date.UTC(year, mon - 1, day, hour, min, sec, 0);
};

DERNode.prototype._decodeNull = function decodeNull(buffer) {
  return null;
};

DERNode.prototype._decodeBool = function decodeBool(buffer) {
  var res = buffer.readUInt8();
  if (buffer.isError(res))
    return res;
  else
    return res !== 0;
};

DERNode.prototype._decodeInt = function decodeInt(buffer, values) {
  // Bigint, return as it is (assume big endian)
  var raw = buffer.raw();
  var res = new bignum(raw);

  if (values)
    res = values[res.toString(10)] || res;

  return res;
};

DERNode.prototype._use = function use(entity, obj) {
  if (typeof entity === 'function')
    entity = entity(obj);
  return entity._getDecoder('der').tree;
};

// Utility methods

function derDecodeTag(buf, fail) {
  var tag = buf.readUInt8(fail);
  if (buf.isError(tag))
    return tag;

  var cls = der.tagClass[tag >> 6];
  var primitive = (tag & 0x20) === 0;

  // Multi-octet tag - load
  if ((tag & 0x1f) === 0x1f) {
    var oct = tag;
    tag = 0;
    while ((oct & 0x80) === 0x80) {
      oct = buf.readUInt8(fail);
      if (buf.isError(oct))
        return oct;

      tag <<= 7;
      tag |= oct & 0x7f;
    }
  } else {
    tag &= 0x1f;
  }
  var tagStr = der.tag[tag];

  return {
    cls: cls,
    primitive: primitive,
    tag: tag,
    tagStr: tagStr
  };
}

function derDecodeLen(buf, primitive, fail) {
  var len = buf.readUInt8(fail);
  if (buf.isError(len))
    return len;

  // Indefinite form
  if (!primitive && len === 0x80)
    return null;

  // Definite form
  if ((len & 0x80) === 0) {
    // Short form
    return len;
  }

  // Long form
  var num = len & 0x7f;
  if (num >= 4)
    return buf.error('length octect is too long');

  len = 0;
  for (var i = 0; i < num; i++) {
    len <<= 8;
    var j = buf.readUInt8(fail);
    if (buf.isError(j))
      return j;
    len |= j;
  }

  return len;
}

},{"../../asn1":246,"inherits":377}],255:[function(require,module,exports){
var decoders = exports;

decoders.der = require('./der');
decoders.pem = require('./pem');

},{"./der":254,"./pem":256}],256:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var asn1 = require('../../asn1');
var DERDecoder = require('./der');

function PEMDecoder(entity) {
  DERDecoder.call(this, entity);
  this.enc = 'pem';
};
inherits(PEMDecoder, DERDecoder);
module.exports = PEMDecoder;

PEMDecoder.prototype.decode = function decode(data, options) {
  var lines = data.toString().split(/[\r\n]+/g);

  var label = options.label.toUpperCase();

  var re = /^-----(BEGIN|END) ([^-]+)-----$/;
  var start = -1;
  var end = -1;
  for (var i = 0; i < lines.length; i++) {
    var match = lines[i].match(re);
    if (match === null)
      continue;

    if (match[2] !== label)
      continue;

    if (start === -1) {
      if (match[1] !== 'BEGIN')
        break;
      start = i;
    } else {
      if (match[1] !== 'END')
        break;
      end = i;
      break;
    }
  }
  if (start === -1 || end === -1)
    throw new Error('PEM section not found for: ' + label);

  var base64 = lines.slice(start + 1, end).join('');
  // Remove excessive symbols
  base64.replace(/[^a-z0-9\+\/=]+/gi, '');

  var input = new Buffer(base64, 'base64');
  return DERDecoder.prototype.decode.call(this, input, options);
};

},{"../../asn1":246,"./der":254,"buffer":177,"inherits":377}],257:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var asn1 = require('../../asn1');
var base = asn1.base;
var bignum = asn1.bignum;

// Import DER constants
var der = asn1.constants.der;

function DEREncoder(entity) {
  this.enc = 'der';
  this.name = entity.name;
  this.entity = entity;

  // Construct base tree
  this.tree = new DERNode();
  this.tree._init(entity.body);
};
module.exports = DEREncoder;

DEREncoder.prototype.encode = function encode(data, reporter) {
  return this.tree._encode(data, reporter).join();
};

// Tree methods

function DERNode(parent) {
  base.Node.call(this, 'der', parent);
}
inherits(DERNode, base.Node);

DERNode.prototype._encodeComposite = function encodeComposite(tag,
                                                              primitive,
                                                              cls,
                                                              content) {
  var encodedTag = encodeTag(tag, primitive, cls, this.reporter);

  // Short form
  if (content.length < 0x80) {
    var header = new Buffer(2);
    header[0] = encodedTag;
    header[1] = content.length;
    return this._createEncoderBuffer([ header, content ]);
  }

  // Long form
  // Count octets required to store length
  var lenOctets = 1;
  for (var i = content.length; i >= 0x100; i >>= 8)
    lenOctets++;

  var header = new Buffer(1 + 1 + lenOctets);
  header[0] = encodedTag;
  header[1] = 0x80 | lenOctets;

  for (var i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8)
    header[i] = j & 0xff;

  return this._createEncoderBuffer([ header, content ]);
};

DERNode.prototype._encodeStr = function encodeStr(str, tag) {
  if (tag === 'octstr') {
    return this._createEncoderBuffer(str);
  } else if (tag === 'bitstr') {
    return this._createEncoderBuffer([ str.unused | 0, str.data ]);
  } else if (tag === 'ia5str' || tag === 'utf8str') {
    return this._createEncoderBuffer(str);
  } else if (tag === 'bmpstr') {
    var buf = new Buffer(str.length * 2);
    for (var i = 0; i < str.length; i++) {
      buf.writeUInt16BE(str.charCodeAt(i), i * 2);
    }
    return this._createEncoderBuffer(buf);
  } else if (tag === 'numstr') {
    if (!this._isNumstr(str)) {
      return this.reporter.error('Encoding of string type: numstr supports ' +
                                 'only digits and space');
    }

    return this._createEncoderBuffer(str);
  } else if (tag === 'printstr') {
    if (!this._isPrintstr(str)) {
      return this.reporter.error('Encoding of string type: printstr supports ' +
                                 'only latin upper and lower case letters, ' +
                                 'digits, space, apostrophe, left and rigth ' +
                                 'parenthesis, plus sign, comma, hyphen, ' +
                                 'dot, slash, colon, equal sign, ' +
                                 'question mark');
    }

    return this._createEncoderBuffer(str);
  } else {
    return this.reporter.error('Encoding of string type: ' + tag +
                               ' unsupported');
  }
};

DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) {
  if (typeof id === 'string') {
    if (!values)
      return this.reporter.error('string objid given, but no values map found');
    if (!values.hasOwnProperty(id))
      return this.reporter.error('objid not found in values map');
    id = values[id].split(/[\s\.]+/g);
    for (var i = 0; i < id.length; i++)
      id[i] |= 0;
  } else if (Array.isArray(id)) {
    id = id.slice();
    for (var i = 0; i < id.length; i++)
      id[i] |= 0;
  }

  if (!Array.isArray(id)) {
    return this.reporter.error('objid() should be either array or string, ' +
                               'got: ' + JSON.stringify(id));
  }

  if (!relative) {
    if (id[1] >= 40)
      return this.reporter.error('Second objid identifier OOB');
    id.splice(0, 2, id[0] * 40 + id[1]);
  }

  // Count number of octets
  var size = 0;
  for (var i = 0; i < id.length; i++) {
    var ident = id[i];
    for (size++; ident >= 0x80; ident >>= 7)
      size++;
  }

  var objid = new Buffer(size);
  var offset = objid.length - 1;
  for (var i = id.length - 1; i >= 0; i--) {
    var ident = id[i];
    objid[offset--] = ident & 0x7f;
    while ((ident >>= 7) > 0)
      objid[offset--] = 0x80 | (ident & 0x7f);
  }

  return this._createEncoderBuffer(objid);
};

function two(num) {
  if (num < 10)
    return '0' + num;
  else
    return num;
}

DERNode.prototype._encodeTime = function encodeTime(time, tag) {
  var str;
  var date = new Date(time);

  if (tag === 'gentime') {
    str = [
      two(date.getFullYear()),
      two(date.getUTCMonth() + 1),
      two(date.getUTCDate()),
      two(date.getUTCHours()),
      two(date.getUTCMinutes()),
      two(date.getUTCSeconds()),
      'Z'
    ].join('');
  } else if (tag === 'utctime') {
    str = [
      two(date.getFullYear() % 100),
      two(date.getUTCMonth() + 1),
      two(date.getUTCDate()),
      two(date.getUTCHours()),
      two(date.getUTCMinutes()),
      two(date.getUTCSeconds()),
      'Z'
    ].join('');
  } else {
    this.reporter.error('Encoding ' + tag + ' time is not supported yet');
  }

  return this._encodeStr(str, 'octstr');
};

DERNode.prototype._encodeNull = function encodeNull() {
  return this._createEncoderBuffer('');
};

DERNode.prototype._encodeInt = function encodeInt(num, values) {
  if (typeof num === 'string') {
    if (!values)
      return this.reporter.error('String int or enum given, but no values map');
    if (!values.hasOwnProperty(num)) {
      return this.reporter.error('Values map doesn\'t contain: ' +
                                 JSON.stringify(num));
    }
    num = values[num];
  }

  // Bignum, assume big endian
  if (typeof num !== 'number' && !Buffer.isBuffer(num)) {
    var numArray = num.toArray();
    if (!num.sign && numArray[0] & 0x80) {
      numArray.unshift(0);
    }
    num = new Buffer(numArray);
  }

  if (Buffer.isBuffer(num)) {
    var size = num.length;
    if (num.length === 0)
      size++;

    var out = new Buffer(size);
    num.copy(out);
    if (num.length === 0)
      out[0] = 0
    return this._createEncoderBuffer(out);
  }

  if (num < 0x80)
    return this._createEncoderBuffer(num);

  if (num < 0x100)
    return this._createEncoderBuffer([0, num]);

  var size = 1;
  for (var i = num; i >= 0x100; i >>= 8)
    size++;

  var out = new Array(size);
  for (var i = out.length - 1; i >= 0; i--) {
    out[i] = num & 0xff;
    num >>= 8;
  }
  if(out[0] & 0x80) {
    out.unshift(0);
  }

  return this._createEncoderBuffer(new Buffer(out));
};

DERNode.prototype._encodeBool = function encodeBool(value) {
  return this._createEncoderBuffer(value ? 0xff : 0);
};

DERNode.prototype._use = function use(entity, obj) {
  if (typeof entity === 'function')
    entity = entity(obj);
  return entity._getEncoder('der').tree;
};

DERNode.prototype._skipDefault = function skipDefault(dataBuffer, reporter, parent) {
  var state = this._baseState;
  var i;
  if (state['default'] === null)
    return false;

  var data = dataBuffer.join();
  if (state.defaultBuffer === undefined)
    state.defaultBuffer = this._encodeValue(state['default'], reporter, parent).join();

  if (data.length !== state.defaultBuffer.length)
    return false;

  for (i=0; i < data.length; i++)
    if (data[i] !== state.defaultBuffer[i])
      return false;

  return true;
};

// Utility methods

function encodeTag(tag, primitive, cls, reporter) {
  var res;

  if (tag === 'seqof')
    tag = 'seq';
  else if (tag === 'setof')
    tag = 'set';

  if (der.tagByName.hasOwnProperty(tag))
    res = der.tagByName[tag];
  else if (typeof tag === 'number' && (tag | 0) === tag)
    res = tag;
  else
    return reporter.error('Unknown tag: ' + tag);

  if (res >= 0x1f)
    return reporter.error('Multi-octet tag encoding unsupported');

  if (!primitive)
    res |= 0x20;

  res |= (der.tagClassByName[cls || 'universal'] << 6);

  return res;
}

},{"../../asn1":246,"buffer":177,"inherits":377}],258:[function(require,module,exports){
var encoders = exports;

encoders.der = require('./der');
encoders.pem = require('./pem');

},{"./der":257,"./pem":259}],259:[function(require,module,exports){
var inherits = require('inherits');
var Buffer = require('buffer').Buffer;

var asn1 = require('../../asn1');
var DEREncoder = require('./der');

function PEMEncoder(entity) {
  DEREncoder.call(this, entity);
  this.enc = 'pem';
};
inherits(PEMEncoder, DEREncoder);
module.exports = PEMEncoder;

PEMEncoder.prototype.encode = function encode(data, options) {
  var buf = DEREncoder.prototype.encode.call(this, data);

  var p = buf.toString('base64');
  var out = [ '-----BEGIN ' + options.label + '-----' ];
  for (var i = 0; i < p.length; i += 64)
    out.push(p.slice(i, i + 64));
  out.push('-----END ' + options.label + '-----');
  return out.join('\n');
};

},{"../../asn1":246,"./der":257,"buffer":177,"inherits":377}],260:[function(require,module,exports){
arguments[4][211][0].apply(exports,arguments)
},{"dup":211}],261:[function(require,module,exports){
arguments[4][185][0].apply(exports,arguments)
},{"buffer":177,"dup":185}],262:[function(require,module,exports){
arguments[4][186][0].apply(exports,arguments)
},{"./aes":261,"./ghash":266,"buffer":177,"buffer-xor":275,"cipher-base":276,"dup":186,"inherits":377}],263:[function(require,module,exports){
arguments[4][187][0].apply(exports,arguments)
},{"./decrypter":264,"./encrypter":265,"./modes":267,"dup":187}],264:[function(require,module,exports){
arguments[4][188][0].apply(exports,arguments)
},{"./aes":261,"./authCipher":262,"./modes":267,"./modes/cbc":268,"./modes/cfb":269,"./modes/cfb1":270,"./modes/cfb8":271,"./modes/ctr":272,"./modes/ecb":273,"./modes/ofb":274,"./streamCipher":277,"buffer":177,"cipher-base":276,"dup":188,"evp_bytestokey":278,"inherits":377}],265:[function(require,module,exports){
arguments[4][189][0].apply(exports,arguments)
},{"./aes":261,"./authCipher":262,"./modes":267,"./modes/cbc":268,"./modes/cfb":269,"./modes/cfb1":270,"./modes/cfb8":271,"./modes/ctr":272,"./modes/ecb":273,"./modes/ofb":274,"./streamCipher":277,"buffer":177,"cipher-base":276,"dup":189,"evp_bytestokey":278,"inherits":377}],266:[function(require,module,exports){
arguments[4][190][0].apply(exports,arguments)
},{"buffer":177,"dup":190}],267:[function(require,module,exports){
arguments[4][191][0].apply(exports,arguments)
},{"dup":191}],268:[function(require,module,exports){
arguments[4][192][0].apply(exports,arguments)
},{"buffer-xor":275,"dup":192}],269:[function(require,module,exports){
arguments[4][193][0].apply(exports,arguments)
},{"buffer":177,"buffer-xor":275,"dup":193}],270:[function(require,module,exports){
arguments[4][194][0].apply(exports,arguments)
},{"buffer":177,"dup":194}],271:[function(require,module,exports){
arguments[4][195][0].apply(exports,arguments)
},{"buffer":177,"dup":195}],272:[function(require,module,exports){
arguments[4][196][0].apply(exports,arguments)
},{"buffer":177,"buffer-xor":275,"dup":196}],273:[function(require,module,exports){
arguments[4][197][0].apply(exports,arguments)
},{"dup":197}],274:[function(require,module,exports){
arguments[4][198][0].apply(exports,arguments)
},{"buffer":177,"buffer-xor":275,"dup":198}],275:[function(require,module,exports){
arguments[4][199][0].apply(exports,arguments)
},{"buffer":177,"dup":199}],276:[function(require,module,exports){
arguments[4][17][0].apply(exports,arguments)
},{"buffer":177,"dup":17,"inherits":377,"stream":399,"string_decoder":406}],277:[function(require,module,exports){
arguments[4][201][0].apply(exports,arguments)
},{"./aes":261,"buffer":177,"cipher-base":276,"dup":201,"inherits":377}],278:[function(require,module,exports){
arguments[4][212][0].apply(exports,arguments)
},{"buffer":177,"create-hash/md5":309,"dup":212}],279:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var createHmac = require('create-hmac')
var crt = require('browserify-rsa')
var curves = require('./curves')
var elliptic = require('elliptic')
var parseKeys = require('parse-asn1')

var BN = require('bn.js')
var EC = elliptic.ec

function sign (hash, key, hashType, signType) {
  var priv = parseKeys(key)
  if (priv.curve) {
    if (signType !== 'ecdsa') throw new Error('wrong private key type')

    return ecSign(hash, priv)
  } else if (priv.type === 'dsa') {
    if (signType !== 'dsa') {
      throw new Error('wrong private key type')
    }
    return dsaSign(hash, priv, hashType)
  } else {
    if (signType !== 'rsa') throw new Error('wrong private key type')
  }

  var len = priv.modulus.byteLength()
  var pad = [ 0, 1 ]
  while (hash.length + pad.length + 1 < len) {
    pad.push(0xff)
  }
  pad.push(0x00)
  var i = -1
  while (++i < hash.length) {
    pad.push(hash[i])
  }

  var out = crt(pad, priv)
  return out
}

function ecSign (hash, priv) {
  var curveId = curves[priv.curve.join('.')]
  if (!curveId) throw new Error('unknown curve ' + priv.curve.join('.'))

  var curve = new EC(curveId)
  var key = curve.genKeyPair()

  key._importPrivate(priv.privateKey)
  var out = key.sign(hash)

  return new Buffer(out.toDER())
}

function dsaSign (hash, priv, algo) {
  var x = priv.params.priv_key
  var p = priv.params.p
  var q = priv.params.q
  var g = priv.params.g
  var r = new BN(0)
  var k
  var H = bits2int(hash, q).mod(q)
  var s = false
  var kv = getKey(x, q, hash, algo)
  while (s === false) {
    k = makeKey(q, kv, algo)
    r = makeR(g, k, p, q)
    s = k.invm(q).imul(H.add(x.mul(r))).mod(q)
    if (!s.cmpn(0)) {
      s = false
      r = new BN(0)
    }
  }
  return toDER(r, s)
}

function toDER (r, s) {
  r = r.toArray()
  s = s.toArray()

  // Pad values
  if (r[0] & 0x80) {
    r = [ 0 ].concat(r)
  }
  // Pad values
  if (s[0] & 0x80) {
    s = [0].concat(s)
  }

  var total = r.length + s.length + 4
  var res = [ 0x30, total, 0x02, r.length ]
  res = res.concat(r, [ 0x02, s.length ], s)
  return new Buffer(res)
}

function getKey (x, q, hash, algo) {
  x = new Buffer(x.toArray())
  if (x.length < q.byteLength()) {
    var zeros = new Buffer(q.byteLength() - x.length)
    zeros.fill(0)
    x = Buffer.concat([zeros, x])
  }
  var hlen = hash.length
  var hbits = bits2octets(hash, q)
  var v = new Buffer(hlen)
  v.fill(1)
  var k = new Buffer(hlen)
  k.fill(0)
  k = createHmac(algo, k)
    .update(v)
    .update(new Buffer([0]))
    .update(x)
    .update(hbits)
    .digest()
  v = createHmac(algo, k)
    .update(v)
    .digest()
  k = createHmac(algo, k)
    .update(v)
    .update(new Buffer([1]))
    .update(x)
    .update(hbits)
    .digest()
  v = createHmac(algo, k)
    .update(v)
    .digest()
  return {
    k: k,
    v: v
  }
}

function bits2int (obits, q) {
  var bits = new BN(obits)
  var shift = (obits.length << 3) - q.bitLength()
  if (shift > 0) {
    bits.ishrn(shift)
  }
  return bits
}

function bits2octets (bits, q) {
  bits = bits2int(bits, q)
  bits = bits.mod(q)
  var out = new Buffer(bits.toArray())
  if (out.length < q.byteLength()) {
    var zeros = new Buffer(q.byteLength() - out.length)
    zeros.fill(0)
    out = Buffer.concat([zeros, out])
  }
  return out
}

function makeKey (q, kv, algo) {
  var t, k

  do {
    t = new Buffer('')

    while (t.length * 8 < q.bitLength()) {
      kv.v = createHmac(algo, kv.k)
        .update(kv.v)
        .digest()
      t = Buffer.concat([t, kv.v])
    }

    k = bits2int(t, q)
    kv.k = createHmac(algo, kv.k)
      .update(kv.v)
      .update(new Buffer([0]))
      .digest()
    kv.v = createHmac(algo, kv.k)
      .update(kv.v)
      .digest()
  } while (k.cmp(q) !== -1)

  return k
}

function makeR (g, k, p, q) {
  return g.toRed(BN.mont(p)).redPow(k).fromRed().mod(q)
}

module.exports = sign
module.exports.getKey = getKey
module.exports.makeKey = makeKey

}).call(this,require("buffer").Buffer)
},{"./curves":215,"bn.js":216,"browserify-rsa":217,"buffer":177,"create-hmac":320,"elliptic":218,"parse-asn1":245}],280:[function(require,module,exports){
(function (Buffer){
// much of this based on https://github.com/indutny/self-signed/blob/gh-pages/lib/rsa.js
var curves = require('./curves')
var elliptic = require('elliptic')
var parseKeys = require('parse-asn1')

var BN = require('bn.js')
var EC = elliptic.ec

function verify (sig, hash, key, signType) {
  var pub = parseKeys(key)
  if (pub.type === 'ec') {
    if (signType !== 'ecdsa') {
      throw new Error('wrong public key type')
    }
    return ecVerify(sig, hash, pub)
  } else if (pub.type === 'dsa') {
    if (signType !== 'dsa') {
      throw new Error('wrong public key type')
    }
    return dsaVerify(sig, hash, pub)
  } else {
    if (signType !== 'rsa') {
      throw new Error('wrong public key type')
    }
  }
  var len = pub.modulus.byteLength()
  var pad = [ 1 ]
  var padNum = 0
  while (hash.length + pad.length + 2 < len) {
    pad.push(0xff)
    padNum++
  }
  pad.push(0x00)
  var i = -1
  while (++i < hash.length) {
    pad.push(hash[i])
  }
  pad = new Buffer(pad)
  var red = BN.mont(pub.modulus)
  sig = new BN(sig).toRed(red)

  sig = sig.redPow(new BN(pub.publicExponent))

  sig = new Buffer(sig.fromRed().toArray())
  var out = 0
  if (padNum < 8) {
    out = 1
  }
  len = Math.min(sig.length, pad.length)
  if (sig.length !== pad.length) {
    out = 1
  }

  i = -1
  while (++i < len) {
    out |= (sig[i] ^ pad[i])
  }
  return out === 0
}

function ecVerify (sig, hash, pub) {
  var curveId = curves[pub.data.algorithm.curve.join('.')]
  if (!curveId) throw new Error('unknown curve ' + pub.data.algorithm.curve.join('.'))

  var curve = new EC(curveId)
  var pubkey = pub.data.subjectPrivateKey.data

  return curve.verify(hash, sig, pubkey)
}

function dsaVerify (sig, hash, pub) {
  var p = pub.data.p
  var q = pub.data.q
  var g = pub.data.g
  var y = pub.data.pub_key
  var unpacked = parseKeys.signature.decode(sig, 'der')
  var s = unpacked.s
  var r = unpacked.r
  checkValue(s, q)
  checkValue(r, q)
  var montp = BN.mont(p)
  var w = s.invm(q)
  var v = g.toRed(montp)
    .redPow(new BN(hash).mul(w).mod(q))
    .fromRed()
    .mul(
      y.toRed(montp)
        .redPow(r.mul(w).mod(q))
        .fromRed()
  ).mod(p).mod(q)
  return !v.cmp(r)
}

function checkValue (b, q) {
  if (b.cmpn(0) <= 0) {
    throw new Error('invalid sig')
  }
  if (b.cmp(q) >= q) {
    throw new Error('invalid sig')
  }
}

module.exports = verify

}).call(this,require("buffer").Buffer)
},{"./curves":215,"bn.js":216,"buffer":177,"elliptic":218,"parse-asn1":245}],281:[function(require,module,exports){
(function (Buffer){
var elliptic = require('elliptic');
var BN = require('bn.js');

module.exports = function createECDH(curve) {
	return new ECDH(curve);
};

var aliases = {
	secp256k1: {
		name: 'secp256k1',
		byteLength: 32
	},
	secp224r1: {
		name: 'p224',
		byteLength: 28
	},
	prime256v1: {
		name: 'p256',
		byteLength: 32
	},
	prime192v1: {
		name: 'p192',
		byteLength: 24
	},
	ed25519: {
		name: 'ed25519',
		byteLength: 32
	},
	secp384r1: {
		name: 'p384',
		byteLength: 48
	},
	secp521r1: {
		name: 'p521',
		byteLength: 66
	}
};

aliases.p224 = aliases.secp224r1;
aliases.p256 = aliases.secp256r1 = aliases.prime256v1;
aliases.p192 = aliases.secp192r1 = aliases.prime192v1;
aliases.p384 = aliases.secp384r1;
aliases.p521 = aliases.secp521r1;

function ECDH(curve) {
	this.curveType = aliases[curve];
	if (!this.curveType ) {
		this.curveType = {
			name: curve
		};
	}
	this.curve = new elliptic.ec(this.curveType.name);
	this.keys = void 0;
}

ECDH.prototype.generateKeys = function (enc, format) {
	this.keys = this.curve.genKeyPair();
	return this.getPublicKey(enc, format);
};

ECDH.prototype.computeSecret = function (other, inenc, enc) {
	inenc = inenc || 'utf8';
	if (!Buffer.isBuffer(other)) {
		other = new Buffer(other, inenc);
	}
	var otherPub = this.curve.keyFromPublic(other).getPublic();
	var out = otherPub.mul(this.keys.getPrivate()).getX();
	return formatReturnValue(out, enc, this.curveType.byteLength);
};

ECDH.prototype.getPublicKey = function (enc, format) {
	var key = this.keys.getPublic(format === 'compressed', true);
	if (format === 'hybrid') {
		if (key[key.length - 1] % 2) {
			key[0] = 7;
		} else {
			key [0] = 6;
		}
	}
	return formatReturnValue(key, enc);
};

ECDH.prototype.getPrivateKey = function (enc) {
	return formatReturnValue(this.keys.getPrivate(), enc);
};

ECDH.prototype.setPublicKey = function (pub, enc) {
	enc = enc || 'utf8';
	if (!Buffer.isBuffer(pub)) {
		pub = new Buffer(pub, enc);
	}
	this.keys._importPublic(pub);
	return this;
};

ECDH.prototype.setPrivateKey = function (priv, enc) {
	enc = enc || 'utf8';
	if (!Buffer.isBuffer(priv)) {
		priv = new Buffer(priv, enc);
	}
	var _priv = new BN(priv);
	_priv = _priv.toString(16);
	this.keys._importPrivate(_priv);
	return this;
};

function formatReturnValue(bn, enc, len) {
	if (!Array.isArray(bn)) {
		bn = bn.toArray();
	}
	var buf = new Buffer(bn);
	if (len && buf.length < len) {
		var zeros = new Buffer(len - buf.length);
		zeros.fill(0);
		buf = Buffer.concat([zeros, buf]);
	}
	if (!enc) {
		return buf;
	} else {
		return buf.toString(enc);
	}
}

}).call(this,require("buffer").Buffer)
},{"bn.js":282,"buffer":177,"elliptic":283}],282:[function(require,module,exports){
arguments[4][216][0].apply(exports,arguments)
},{"dup":216}],283:[function(require,module,exports){
arguments[4][218][0].apply(exports,arguments)
},{"../package.json":306,"./elliptic/curve":286,"./elliptic/curves":289,"./elliptic/ec":290,"./elliptic/eddsa":293,"./elliptic/hmac-drbg":296,"./elliptic/utils":298,"brorand":299,"dup":218}],284:[function(require,module,exports){
arguments[4][219][0].apply(exports,arguments)
},{"../../elliptic":283,"bn.js":282,"dup":219}],285:[function(require,module,exports){
arguments[4][220][0].apply(exports,arguments)
},{"../../elliptic":283,"../curve":286,"bn.js":282,"dup":220,"inherits":377}],286:[function(require,module,exports){
arguments[4][221][0].apply(exports,arguments)
},{"./base":284,"./edwards":285,"./mont":287,"./short":288,"dup":221}],287:[function(require,module,exports){
arguments[4][222][0].apply(exports,arguments)
},{"../../elliptic":283,"../curve":286,"bn.js":282,"dup":222,"inherits":377}],288:[function(require,module,exports){
arguments[4][223][0].apply(exports,arguments)
},{"../../elliptic":283,"../curve":286,"bn.js":282,"dup":223,"inherits":377}],289:[function(require,module,exports){
arguments[4][224][0].apply(exports,arguments)
},{"../elliptic":283,"./precomputed/secp256k1":297,"dup":224,"hash.js":300}],290:[function(require,module,exports){
arguments[4][225][0].apply(exports,arguments)
},{"../../elliptic":283,"./key":291,"./signature":292,"bn.js":282,"dup":225}],291:[function(require,module,exports){
arguments[4][226][0].apply(exports,arguments)
},{"bn.js":282,"dup":226}],292:[function(require,module,exports){
arguments[4][227][0].apply(exports,arguments)
},{"../../elliptic":283,"bn.js":282,"dup":227}],293:[function(require,module,exports){
arguments[4][228][0].apply(exports,arguments)
},{"../../elliptic":283,"./key":294,"./signature":295,"dup":228,"hash.js":300}],294:[function(require,module,exports){
arguments[4][229][0].apply(exports,arguments)
},{"../../elliptic":283,"dup":229}],295:[function(require,module,exports){
arguments[4][230][0].apply(exports,arguments)
},{"../../elliptic":283,"bn.js":282,"dup":230}],296:[function(require,module,exports){
arguments[4][231][0].apply(exports,arguments)
},{"../elliptic":283,"dup":231,"hash.js":300}],297:[function(require,module,exports){
arguments[4][232][0].apply(exports,arguments)
},{"dup":232}],298:[function(require,module,exports){
arguments[4][233][0].apply(exports,arguments)
},{"bn.js":282,"dup":233}],299:[function(require,module,exports){
arguments[4][234][0].apply(exports,arguments)
},{"dup":234}],300:[function(require,module,exports){
arguments[4][235][0].apply(exports,arguments)
},{"./hash/common":301,"./hash/hmac":302,"./hash/ripemd":303,"./hash/sha":304,"./hash/utils":305,"dup":235}],301:[function(require,module,exports){
arguments[4][236][0].apply(exports,arguments)
},{"../hash":300,"dup":236}],302:[function(require,module,exports){
arguments[4][237][0].apply(exports,arguments)
},{"../hash":300,"dup":237}],303:[function(require,module,exports){
arguments[4][238][0].apply(exports,arguments)
},{"../hash":300,"dup":238}],304:[function(require,module,exports){
arguments[4][239][0].apply(exports,arguments)
},{"../hash":300,"dup":239}],305:[function(require,module,exports){
arguments[4][240][0].apply(exports,arguments)
},{"dup":240,"inherits":377}],306:[function(require,module,exports){
arguments[4][241][0].apply(exports,arguments)
},{"dup":241}],307:[function(require,module,exports){
arguments[4][14][0].apply(exports,arguments)
},{"./md5":309,"buffer":177,"cipher-base":310,"dup":14,"inherits":377,"ripemd160":311,"sha.js":313}],308:[function(require,module,exports){
arguments[4][15][0].apply(exports,arguments)
},{"buffer":177,"dup":15}],309:[function(require,module,exports){
arguments[4][16][0].apply(exports,arguments)
},{"./helpers":308,"dup":16}],310:[function(require,module,exports){
arguments[4][17][0].apply(exports,arguments)
},{"buffer":177,"dup":17,"inherits":377,"stream":399,"string_decoder":406}],311:[function(require,module,exports){
arguments[4][18][0].apply(exports,arguments)
},{"buffer":177,"dup":18}],312:[function(require,module,exports){
arguments[4][19][0].apply(exports,arguments)
},{"buffer":177,"dup":19}],313:[function(require,module,exports){
arguments[4][20][0].apply(exports,arguments)
},{"./sha":314,"./sha1":315,"./sha224":316,"./sha256":317,"./sha384":318,"./sha512":319,"dup":20}],314:[function(require,module,exports){
arguments[4][21][0].apply(exports,arguments)
},{"./hash":312,"buffer":177,"dup":21,"inherits":377}],315:[function(require,module,exports){
arguments[4][22][0].apply(exports,arguments)
},{"./hash":312,"buffer":177,"dup":22,"inherits":377}],316:[function(require,module,exports){
arguments[4][23][0].apply(exports,arguments)
},{"./hash":312,"./sha256":317,"buffer":177,"dup":23,"inherits":377}],317:[function(require,module,exports){
arguments[4][24][0].apply(exports,arguments)
},{"./hash":312,"buffer":177,"dup":24,"inherits":377}],318:[function(require,module,exports){
arguments[4][25][0].apply(exports,arguments)
},{"./hash":312,"./sha512":319,"buffer":177,"dup":25,"inherits":377}],319:[function(require,module,exports){
arguments[4][26][0].apply(exports,arguments)
},{"./hash":312,"buffer":177,"dup":26,"inherits":377}],320:[function(require,module,exports){
arguments[4][27][0].apply(exports,arguments)
},{"buffer":177,"create-hash/browser":307,"dup":27,"inherits":377,"stream":399}],321:[function(require,module,exports){
(function (Buffer){
var generatePrime = require('./lib/generatePrime')
var primes = require('./lib/primes')

var DH = require('./lib/dh')

function getDiffieHellman (mod) {
  var prime = new Buffer(primes[mod].prime, 'hex')
  var gen = new Buffer(primes[mod].gen, 'hex')

  return new DH(prime, gen)
}

var ENCODINGS = {
  'binary': true, 'hex': true, 'base64': true
}

function createDiffieHellman (prime, enc, generator, genc) {
  if (Buffer.isBuffer(enc) || ENCODINGS[enc] === undefined) {
    return createDiffieHellman(prime, 'binary', enc, generator)
  }

  enc = enc || 'binary'
  genc = genc || 'binary'
  generator = generator || new Buffer([2])

  if (!Buffer.isBuffer(generator)) {
    generator = new Buffer(generator, genc)
  }

  if (typeof prime === 'number') {
    return new DH(generatePrime(prime, generator), generator, true)
  }

  if (!Buffer.isBuffer(prime)) {
    prime = new Buffer(prime, enc)
  }

  return new DH(prime, generator, true)
}

exports.DiffieHellmanGroup = exports.createDiffieHellmanGroup = exports.getDiffieHellman = getDiffieHellman
exports.createDiffieHellman = exports.DiffieHellman = createDiffieHellman

}).call(this,require("buffer").Buffer)
},{"./lib/dh":322,"./lib/generatePrime":323,"./lib/primes":324,"buffer":177}],322:[function(require,module,exports){
(function (Buffer){
var BN = require('bn.js');
var MillerRabin = require('miller-rabin');
var millerRabin = new MillerRabin();
var TWENTYFOUR = new BN(24);
var ELEVEN = new BN(11);
var TEN = new BN(10);
var THREE = new BN(3);
var SEVEN = new BN(7);
var primes = require('./generatePrime');
var randomBytes = require('randombytes');
module.exports = DH;

function setPublicKey(pub, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(pub)) {
    pub = new Buffer(pub, enc);
  }
  this._pub = new BN(pub);
  return this;
}

function setPrivateKey(priv, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(priv)) {
    priv = new Buffer(priv, enc);
  }
  this._priv = new BN(priv);
  return this;
}

var primeCache = {};
function checkPrime(prime, generator) {
  var gen = generator.toString('hex');
  var hex = [gen, prime.toString(16)].join('_');
  if (hex in primeCache) {
    return primeCache[hex];
  }
  var error = 0;

  if (prime.isEven() ||
    !primes.simpleSieve ||
    !primes.fermatTest(prime) ||
    !millerRabin.test(prime)) {
    //not a prime so +1
    error += 1;

    if (gen === '02' || gen === '05') {
      // we'd be able to check the generator
      // it would fail so +8
      error += 8;
    } else {
      //we wouldn't be able to test the generator
      // so +4
      error += 4;
    }
    primeCache[hex] = error;
    return error;
  }
  if (!millerRabin.test(prime.shrn(1))) {
    //not a safe prime
    error += 2;
  }
  var rem;
  switch (gen) {
    case '02':
      if (prime.mod(TWENTYFOUR).cmp(ELEVEN)) {
        // unsuidable generator
        error += 8;
      }
      break;
    case '05':
      rem = prime.mod(TEN);
      if (rem.cmp(THREE) && rem.cmp(SEVEN)) {
        // prime mod 10 needs to equal 3 or 7
        error += 8;
      }
      break;
    default:
      error += 4;
  }
  primeCache[hex] = error;
  return error;
}

function DH(prime, generator, malleable) {
  this.setGenerator(generator);
  this.__prime = new BN(prime);
  this._prime = BN.mont(this.__prime);
  this._primeLen = prime.length;
  this._pub = undefined;
  this._priv = undefined;
  this._primeCode = undefined;
  if (malleable) {
    this.setPublicKey = setPublicKey;
    this.setPrivateKey = setPrivateKey;
  } else {
    this._primeCode = 8;
  }
}
Object.defineProperty(DH.prototype, 'verifyError', {
  enumerable: true,
  get: function () {
    if (typeof this._primeCode !== 'number') {
      this._primeCode = checkPrime(this.__prime, this.__gen);
    }
    return this._primeCode;
  }
});
DH.prototype.generateKeys = function () {
  if (!this._priv) {
    this._priv = new BN(randomBytes(this._primeLen));
  }
  this._pub = this._gen.toRed(this._prime).redPow(this._priv).fromRed();
  return this.getPublicKey();
};

DH.prototype.computeSecret = function (other) {
  other = new BN(other);
  other = other.toRed(this._prime);
  var secret = other.redPow(this._priv).fromRed();
  var out = new Buffer(secret.toArray());
  var prime = this.getPrime();
  if (out.length < prime.length) {
    var front = new Buffer(prime.length - out.length);
    front.fill(0);
    out = Buffer.concat([front, out]);
  }
  return out;
};

DH.prototype.getPublicKey = function getPublicKey(enc) {
  return formatReturnValue(this._pub, enc);
};

DH.prototype.getPrivateKey = function getPrivateKey(enc) {
  return formatReturnValue(this._priv, enc);
};

DH.prototype.getPrime = function (enc) {
  return formatReturnValue(this.__prime, enc);
};

DH.prototype.getGenerator = function (enc) {
  return formatReturnValue(this._gen, enc);
};

DH.prototype.setGenerator = function (gen, enc) {
  enc = enc || 'utf8';
  if (!Buffer.isBuffer(gen)) {
    gen = new Buffer(gen, enc);
  }
  this.__gen = gen;
  this._gen = new BN(gen);
  return this;
};

function formatReturnValue(bn, enc) {
  var buf = new Buffer(bn.toArray());
  if (!enc) {
    return buf;
  } else {
    return buf.toString(enc);
  }
}

}).call(this,require("buffer").Buffer)
},{"./generatePrime":323,"bn.js":325,"buffer":177,"miller-rabin":326,"randombytes":374}],323:[function(require,module,exports){
var randomBytes = require('randombytes');
module.exports = findPrime;
findPrime.simpleSieve = simpleSieve;
findPrime.fermatTest = fermatTest;
var BN = require('bn.js');
var TWENTYFOUR = new BN(24);
var MillerRabin = require('miller-rabin');
var millerRabin = new MillerRabin();
var ONE = new BN(1);
var TWO = new BN(2);
var FIVE = new BN(5);
var SIXTEEN = new BN(16);
var EIGHT = new BN(8);
var TEN = new BN(10);
var THREE = new BN(3);
var SEVEN = new BN(7);
var ELEVEN = new BN(11);
var FOUR = new BN(4);
var TWELVE = new BN(12);
var primes = null;

function _getPrimes() {
  if (primes !== null)
    return primes;

  var limit = 0x100000;
  var res = [];
  res[0] = 2;
  for (var i = 1, k = 3; k < limit; k += 2) {
    var sqrt = Math.ceil(Math.sqrt(k));
    for (var j = 0; j < i && res[j] <= sqrt; j++)
      if (k % res[j] === 0)
        break;

    if (i !== j && res[j] <= sqrt)
      continue;

    res[i++] = k;
  }
  primes = res;
  return res;
}

function simpleSieve(p) {
  var primes = _getPrimes();

  for (var i = 0; i < primes.length; i++)
    if (p.modn(primes[i]) === 0) {
      if (p.cmpn(primes[i]) === 0) {
        return true;
      } else {
        return false;
      }
    }

  return true;
}

function fermatTest(p) {
  var red = BN.mont(p);
  return TWO.toRed(red).redPow(p.subn(1)).fromRed().cmpn(1) === 0;
}

function findPrime(bits, gen) {
  if (bits < 16) {
    // this is what openssl does
    if (gen === 2 || gen === 5) {
      return new BN([0x8c, 0x7b]);
    } else {
      return new BN([0x8c, 0x27]);
    }
  }
  gen = new BN(gen);

  var num, n2;

  while (true) {
    num = new BN(randomBytes(Math.ceil(bits / 8)));
    while (num.bitLength() > bits) {
      num.ishrn(1);
    }
    if (num.isEven()) {
      num.iadd(ONE);
    }
    if (!num.testn(1)) {
      num.iadd(TWO);
    }
    if (!gen.cmp(TWO)) {
      while (num.mod(TWENTYFOUR).cmp(ELEVEN)) {
        num.iadd(FOUR);
      }
    } else if (!gen.cmp(FIVE)) {
      while (num.mod(TEN).cmp(THREE)) {
        num.iadd(FOUR);
      }
    }
    n2 = num.shrn(1);
    if (simpleSieve(n2) && simpleSieve(num) &&
      fermatTest(n2) && fermatTest(num) &&
      millerRabin.test(n2) && millerRabin.test(num)) {
      return num;
    }
  }

}

},{"bn.js":325,"miller-rabin":326,"randombytes":374}],324:[function(require,module,exports){
module.exports={
    "modp1": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a63a3620ffffffffffffffff"
    },
    "modp2": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece65381ffffffffffffffff"
    },
    "modp5": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca237327ffffffffffffffff"
    },
    "modp14": {
        "gen": "02",
        "prime": "ffffffffffffffffc90fdaa22168c234c4c6628b80dc1cd129024e088a67cc74020bbea63b139b22514a08798e3404ddef9519b3cd3a431b302b0a6df25f14374fe1356d6d51c245e485b576625e7ec6f44c42e9a637ed6b0bff5cb6f406b7edee386bfb5a899fa5ae9f24117c4b1fe649286651ece45b3dc2007cb8a163bf0598da48361c55d39a69163fa8fd24cf5f83655d23dca3ad961c62f356208552bb9ed529077096966d670c354e4abc9804f1746c08ca18217c32905e462e36ce3be39e772c180e86039b2783a2ec07a28fb5c55df06f4c52c9de2bcbf6955817183995497cea956ae515d2261898fa051015728e5a8aacaa68ffffffffffffffff"
    },
    "modp15": {
        "gen": "02",
        "prime": "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"
    },
    "modp16": {
        "gen": "02",
        "prime": "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"
    },
    "modp17": {
        "gen": "02",
        "prime": "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"
    },
    "modp18": {
        "gen": "02",
        "prime": "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"
    }
}
},{}],325:[function(require,module,exports){
arguments[4][216][0].apply(exports,arguments)
},{"dup":216}],326:[function(require,module,exports){
var bn = require('bn.js');
var brorand = require('brorand');

function MillerRabin(rand) {
  this.rand = rand || new brorand.Rand();
}
module.exports = MillerRabin;

MillerRabin.create = function create(rand) {
  return new MillerRabin(rand);
};

MillerRabin.prototype._rand = function _rand(n) {
  var len = n.bitLength();
  var buf = this.rand.generate(Math.ceil(len / 8));

  // Set low bits
  buf[0] |= 3;

  // Mask high bits
  var mask = len & 0x7;
  if (mask !== 0)
    buf[buf.length - 1] >>= 7 - mask;

  return new bn(buf);
}

MillerRabin.prototype.test = function test(n, k, cb) {
  var len = n.bitLength();
  var red = bn.mont(n);
  var rone = new bn(1).toRed(red);

  if (!k)
    k = Math.max(1, (len / 48) | 0);

  // Find d and s, (n - 1) = (2 ^ s) * d;
  var n1 = n.subn(1);
  var n2 = n1.subn(1);
  for (var s = 0; !n1.testn(s); s++) {}
  var d = n.shrn(s);

  var rn1 = n1.toRed(red);

  var prime = true;
  for (; k > 0; k--) {
    var a = this._rand(n2);
    if (cb)
      cb(a);

    var x = a.toRed(red).redPow(d);
    if (x.cmp(rone) === 0 || x.cmp(rn1) === 0)
      continue;

    for (var i = 1; i < s; i++) {
      x = x.redSqr();

      if (x.cmp(rone) === 0)
        return false;
      if (x.cmp(rn1) === 0)
        break;
    }

    if (i === s)
      return false;
  }

  return prime;
};

MillerRabin.prototype.getDivisor = function getDivisor(n, k) {
  var len = n.bitLength();
  var red = bn.mont(n);
  var rone = new bn(1).toRed(red);

  if (!k)
    k = Math.max(1, (len / 48) | 0);

  // Find d and s, (n - 1) = (2 ^ s) * d;
  var n1 = n.subn(1);
  var n2 = n1.subn(1);
  for (var s = 0; !n1.testn(s); s++) {}
  var d = n.shrn(s);

  var rn1 = n1.toRed(red);

  for (; k > 0; k--) {
    var a = this._rand(n2);

    var g = n.gcd(a);
    if (g.cmpn(1) !== 0)
      return g;

    var x = a.toRed(red).redPow(d);
    if (x.cmp(rone) === 0 || x.cmp(rn1) === 0)
      continue;

    for (var i = 1; i < s; i++) {
      x = x.redSqr();

      if (x.cmp(rone) === 0)
        return x.fromRed().subn(1).gcd(n);
      if (x.cmp(rn1) === 0)
        break;
    }

    if (i === s) {
      x = x.redSqr();
      return x.fromRed().subn(1).gcd(n);
    }
  }

  return false;
};

},{"bn.js":325,"brorand":327}],327:[function(require,module,exports){
arguments[4][234][0].apply(exports,arguments)
},{"dup":234}],328:[function(require,module,exports){
(function (Buffer){
var createHmac = require('create-hmac')
var MAX_ALLOC = Math.pow(2, 30) - 1 // default in iojs

exports.pbkdf2 = pbkdf2
function pbkdf2 (password, salt, iterations, keylen, digest, callback) {
  if (typeof digest === 'function') {
    callback = digest
    digest = undefined
  }

  if (typeof callback !== 'function') {
    throw new Error('No callback provided to pbkdf2')
  }

  var result = pbkdf2Sync(password, salt, iterations, keylen, digest)
  setTimeout(function () {
    callback(undefined, result)
  })
}

exports.pbkdf2Sync = pbkdf2Sync
function pbkdf2Sync (password, salt, iterations, keylen, digest) {
  if (typeof iterations !== 'number') {
    throw new TypeError('Iterations not a number')
  }

  if (iterations < 0) {
    throw new TypeError('Bad iterations')
  }

  if (typeof keylen !== 'number') {
    throw new TypeError('Key length not a number')
  }

  if (keylen < 0 || keylen > MAX_ALLOC) {
    throw new TypeError('Bad key length')
  }

  digest = digest || 'sha1'

  if (!Buffer.isBuffer(password)) password = new Buffer(password, 'binary')
  if (!Buffer.isBuffer(salt)) salt = new Buffer(salt, 'binary')

  var hLen
  var l = 1
  var DK = new Buffer(keylen)
  var block1 = new Buffer(salt.length + 4)
  salt.copy(block1, 0, 0, salt.length)

  var r
  var T

  for (var i = 1; i <= l; i++) {
    block1.writeUInt32BE(i, salt.length)
    var U = createHmac(digest, password).update(block1).digest()

    if (!hLen) {
      hLen = U.length
      T = new Buffer(hLen)
      l = Math.ceil(keylen / hLen)
      r = keylen - (l - 1) * hLen
    }

    U.copy(T, 0, 0, hLen)

    for (var j = 1; j < iterations; j++) {
      U = createHmac(digest, password).update(U).digest()

      for (var k = 0; k < hLen; k++) {
        T[k] ^= U[k]
      }
    }

    var destPos = (i - 1) * hLen
    var len = (i === l ? r : hLen)
    T.copy(DK, destPos, 0, len)
  }

  return DK
}

}).call(this,require("buffer").Buffer)
},{"buffer":177,"create-hmac":320}],329:[function(require,module,exports){
exports.publicEncrypt = require('./publicEncrypt');
exports.privateDecrypt = require('./privateDecrypt');

exports.privateEncrypt = function privateEncrypt(key, buf) {
  return exports.publicEncrypt(key, buf, true);
};

exports.publicDecrypt = function publicDecrypt(key, buf) {
  return exports.privateDecrypt(key, buf, true);
};
},{"./privateDecrypt":370,"./publicEncrypt":371}],330:[function(require,module,exports){
(function (Buffer){
var createHash = require('create-hash');
module.exports = function (seed, len) {
  var t = new Buffer('');
  var  i = 0, c;
  while (t.length < len) {
    c = i2ops(i++);
    t = Buffer.concat([t, createHash('sha1').update(seed).update(c).digest()]);
  }
  return t.slice(0, len);
};

function i2ops(c) {
  var out = new Buffer(4);
  out.writeUInt32BE(c,0);
  return out;
}
}).call(this,require("buffer").Buffer)
},{"buffer":177,"create-hash":307}],331:[function(require,module,exports){
arguments[4][216][0].apply(exports,arguments)
},{"dup":216}],332:[function(require,module,exports){
arguments[4][217][0].apply(exports,arguments)
},{"bn.js":331,"buffer":177,"dup":217,"randombytes":374}],333:[function(require,module,exports){
arguments[4][242][0].apply(exports,arguments)
},{"dup":242}],334:[function(require,module,exports){
arguments[4][243][0].apply(exports,arguments)
},{"asn1.js":337,"dup":243}],335:[function(require,module,exports){
arguments[4][244][0].apply(exports,arguments)
},{"browserify-aes":354,"buffer":177,"dup":244,"evp_bytestokey":369}],336:[function(require,module,exports){
arguments[4][245][0].apply(exports,arguments)
},{"./aesid.json":333,"./asn1":334,"./fixProc":335,"browserify-aes":354,"buffer":177,"dup":245,"pbkdf2":328}],337:[function(require,module,exports){
arguments[4][246][0].apply(exports,arguments)
},{"./asn1/api":338,"./asn1/base":340,"./asn1/constants":344,"./asn1/decoders":346,"./asn1/encoders":349,"bn.js":331,"dup":246}],338:[function(require,module,exports){
arguments[4][247][0].apply(exports,arguments)
},{"../asn1":337,"dup":247,"inherits":377,"vm":411}],339:[function(require,module,exports){
arguments[4][248][0].apply(exports,arguments)
},{"../base":340,"buffer":177,"dup":248,"inherits":377}],340:[function(require,module,exports){
arguments[4][249][0].apply(exports,arguments)
},{"./buffer":339,"./node":341,"./reporter":342,"dup":249}],341:[function(require,module,exports){
arguments[4][250][0].apply(exports,arguments)
},{"../base":340,"dup":250,"minimalistic-assert":351}],342:[function(require,module,exports){
arguments[4][251][0].apply(exports,arguments)
},{"dup":251,"inherits":377}],343:[function(require,module,exports){
arguments[4][252][0].apply(exports,arguments)
},{"../constants":344,"dup":252}],344:[function(require,module,exports){
arguments[4][253][0].apply(exports,arguments)
},{"./der":343,"dup":253}],345:[function(require,module,exports){
arguments[4][254][0].apply(exports,arguments)
},{"../../asn1":337,"dup":254,"inherits":377}],346:[function(require,module,exports){
arguments[4][255][0].apply(exports,arguments)
},{"./der":345,"./pem":347,"dup":255}],347:[function(require,module,exports){
arguments[4][256][0].apply(exports,arguments)
},{"../../asn1":337,"./der":345,"buffer":177,"dup":256,"inherits":377}],348:[function(require,module,exports){
arguments[4][257][0].apply(exports,arguments)
},{"../../asn1":337,"buffer":177,"dup":257,"inherits":377}],349:[function(require,module,exports){
arguments[4][258][0].apply(exports,arguments)
},{"./der":348,"./pem":350,"dup":258}],350:[function(require,module,exports){
arguments[4][259][0].apply(exports,arguments)
},{"../../asn1":337,"./der":348,"buffer":177,"dup":259,"inherits":377}],351:[function(require,module,exports){
arguments[4][211][0].apply(exports,arguments)
},{"dup":211}],352:[function(require,module,exports){
arguments[4][185][0].apply(exports,arguments)
},{"buffer":177,"dup":185}],353:[function(require,module,exports){
arguments[4][186][0].apply(exports,arguments)
},{"./aes":352,"./ghash":357,"buffer":177,"buffer-xor":366,"cipher-base":367,"dup":186,"inherits":377}],354:[function(require,module,exports){
arguments[4][187][0].apply(exports,arguments)
},{"./decrypter":355,"./encrypter":356,"./modes":358,"dup":187}],355:[function(require,module,exports){
arguments[4][188][0].apply(exports,arguments)
},{"./aes":352,"./authCipher":353,"./modes":358,"./modes/cbc":359,"./modes/cfb":360,"./modes/cfb1":361,"./modes/cfb8":362,"./modes/ctr":363,"./modes/ecb":364,"./modes/ofb":365,"./streamCipher":368,"buffer":177,"cipher-base":367,"dup":188,"evp_bytestokey":369,"inherits":377}],356:[function(require,module,exports){
arguments[4][189][0].apply(exports,arguments)
},{"./aes":352,"./authCipher":353,"./modes":358,"./modes/cbc":359,"./modes/cfb":360,"./modes/cfb1":361,"./modes/cfb8":362,"./modes/ctr":363,"./modes/ecb":364,"./modes/ofb":365,"./streamCipher":368,"buffer":177,"cipher-base":367,"dup":189,"evp_bytestokey":369,"inherits":377}],357:[function(require,module,exports){
arguments[4][190][0].apply(exports,arguments)
},{"buffer":177,"dup":190}],358:[function(require,module,exports){
arguments[4][191][0].apply(exports,arguments)
},{"dup":191}],359:[function(require,module,exports){
arguments[4][192][0].apply(exports,arguments)
},{"buffer-xor":366,"dup":192}],360:[function(require,module,exports){
arguments[4][193][0].apply(exports,arguments)
},{"buffer":177,"buffer-xor":366,"dup":193}],361:[function(require,module,exports){
arguments[4][194][0].apply(exports,arguments)
},{"buffer":177,"dup":194}],362:[function(require,module,exports){
arguments[4][195][0].apply(exports,arguments)
},{"buffer":177,"dup":195}],363:[function(require,module,exports){
arguments[4][196][0].apply(exports,arguments)
},{"buffer":177,"buffer-xor":366,"dup":196}],364:[function(require,module,exports){
arguments[4][197][0].apply(exports,arguments)
},{"dup":197}],365:[function(require,module,exports){
arguments[4][198][0].apply(exports,arguments)
},{"buffer":177,"buffer-xor":366,"dup":198}],366:[function(require,module,exports){
arguments[4][199][0].apply(exports,arguments)
},{"buffer":177,"dup":199}],367:[function(require,module,exports){
arguments[4][17][0].apply(exports,arguments)
},{"buffer":177,"dup":17,"inherits":377,"stream":399,"string_decoder":406}],368:[function(require,module,exports){
arguments[4][201][0].apply(exports,arguments)
},{"./aes":352,"buffer":177,"cipher-base":367,"dup":201,"inherits":377}],369:[function(require,module,exports){
arguments[4][212][0].apply(exports,arguments)
},{"buffer":177,"create-hash/md5":309,"dup":212}],370:[function(require,module,exports){
(function (Buffer){
var parseKeys = require('parse-asn1');
var mgf = require('./mgf');
var xor = require('./xor');
var bn = require('bn.js');
var crt = require('browserify-rsa');
var createHash = require('create-hash');
var withPublic = require('./withPublic');
module.exports = function privateDecrypt(private_key, enc, reverse) {
  var padding;
  if (private_key.padding) {
    padding = private_key.padding;
  } else if (reverse) {
    padding = 1;
  } else {
    padding = 4;
  }
  
  var key = parseKeys(private_key);
  var k = key.modulus.byteLength();
  if (enc.length > k || new bn(enc).cmp(key.modulus) >= 0) {
    throw new Error('decryption error');
  }
  var msg;
  if (reverse) {
    msg = withPublic(new bn(enc), key);
  } else {
    msg = crt(enc, key);
  }
  var zBuffer = new Buffer(k - msg.length);
  zBuffer.fill(0);
  msg = Buffer.concat([zBuffer, msg], k);
  if (padding === 4) {
    return oaep(key, msg);
  } else if (padding === 1) {
    return pkcs1(key, msg, reverse);
  } else if (padding === 3) {
    return msg;
  } else {
    throw new Error('unknown padding');
  }
};

function oaep(key, msg){
  var n = key.modulus;
  var k = key.modulus.byteLength();
  var mLen = msg.length;
  var iHash = createHash('sha1').update(new Buffer('')).digest();
  var hLen = iHash.length;
  var hLen2 = 2 * hLen;
  if (msg[0] !== 0) {
    throw new Error('decryption error');
  }
  var maskedSeed = msg.slice(1, hLen + 1);
  var maskedDb =  msg.slice(hLen + 1);
  var seed = xor(maskedSeed, mgf(maskedDb, hLen));
  var db = xor(maskedDb, mgf(seed, k - hLen - 1));
  if (compare(iHash, db.slice(0, hLen))) {
    throw new Error('decryption error');
  }
  var i = hLen;
  while (db[i] === 0) {
    i++;
  }
  if (db[i++] !== 1) {
    throw new Error('decryption error');
  }
  return db.slice(i);
}

function pkcs1(key, msg, reverse){
  var p1 = msg.slice(0, 2);
  var i = 2;
  var status = 0;
  while (msg[i++] !== 0) {
    if (i >= msg.length) {
      status++;
      break;
    }
  }
  var ps = msg.slice(2, i - 1);
  var p2 = msg.slice(i - 1, i);

  if ((p1.toString('hex') !== '0002' && !reverse) || (p1.toString('hex') !== '0001' && reverse)){
    status++;
  }
  if (ps.length < 8) {
    status++;
  }
  if (status) {
    throw new Error('decryption error');
  }
  return  msg.slice(i);
}
function compare(a, b){
  a = new Buffer(a);
  b = new Buffer(b);
  var dif = 0;
  var len = a.length;
  if (a.length !== b.length) {
    dif++;
    len = Math.min(a.length, b.length);
  }
  var i = -1;
  while (++i < len) {
    dif += (a[i] ^ b[i]);
  }
  return dif;
}
}).call(this,require("buffer").Buffer)
},{"./mgf":330,"./withPublic":372,"./xor":373,"bn.js":331,"browserify-rsa":332,"buffer":177,"create-hash":307,"parse-asn1":336}],371:[function(require,module,exports){
(function (Buffer){
var parseKeys = require('parse-asn1');
var randomBytes = require('randombytes');
var createHash = require('create-hash');
var mgf = require('./mgf');
var xor = require('./xor');
var bn = require('bn.js');
var withPublic = require('./withPublic');
var crt = require('browserify-rsa');

var constants = {
  RSA_PKCS1_OAEP_PADDING: 4,
  RSA_PKCS1_PADDIN: 1,
  RSA_NO_PADDING: 3
};

module.exports = function publicEncrypt(public_key, msg, reverse) {
  var padding;
  if (public_key.padding) {
    padding = public_key.padding;
  } else if (reverse) {
    padding = 1;
  } else {
    padding = 4;
  }
  var key = parseKeys(public_key);
  var paddedMsg;
  if (padding === 4) {
    paddedMsg = oaep(key, msg);
  } else if (padding === 1) {
    paddedMsg = pkcs1(key, msg, reverse);
  } else if (padding === 3) {
    paddedMsg = new bn(msg);
    if (paddedMsg.cmp(key.modulus) >= 0) {
      throw new Error('data too long for modulus');
    }
  } else {
    throw new Error('unknown padding');
  }
  if (reverse) {
    return crt(paddedMsg, key);
  } else {
    return withPublic(paddedMsg, key);
  }
};

function oaep(key, msg){
  var k = key.modulus.byteLength();
  var mLen = msg.length;
  var iHash = createHash('sha1').update(new Buffer('')).digest();
  var hLen = iHash.length;
  var hLen2 = 2 * hLen;
  if (mLen > k - hLen2 - 2) {
    throw new Error('message too long');
  }
  var ps = new Buffer(k - mLen - hLen2 - 2);
  ps.fill(0);
  var dblen = k - hLen - 1;
  var seed = randomBytes(hLen);
  var maskedDb = xor(Buffer.concat([iHash, ps, new Buffer([1]), msg], dblen), mgf(seed, dblen));
  var maskedSeed = xor(seed, mgf(maskedDb, hLen));
  return new bn(Buffer.concat([new Buffer([0]), maskedSeed, maskedDb], k));
}
function pkcs1(key, msg, reverse){
  var mLen = msg.length;
  var k = key.modulus.byteLength();
  if (mLen > k - 11) {
    throw new Error('message too long');
  }
  var ps;
  if (reverse) {
    ps = new Buffer(k - mLen - 3);
    ps.fill(0xff);
  } else {
    ps = nonZero(k - mLen - 3);
  }
  return new bn(Buffer.concat([new Buffer([0, reverse?1:2]), ps, new Buffer([0]), msg], k));
}
function nonZero(len, crypto) {
  var out = new Buffer(len);
  var i = 0;
  var cache = randomBytes(len*2);
  var cur = 0;
  var num;
  while (i < len) {
    if (cur === cache.length) {
      cache = randomBytes(len*2);
      cur = 0;
    }
    num = cache[cur++];
    if (num) {
      out[i++] = num;
    }
  }
  return out;
}
}).call(this,require("buffer").Buffer)
},{"./mgf":330,"./withPublic":372,"./xor":373,"bn.js":331,"browserify-rsa":332,"buffer":177,"create-hash":307,"parse-asn1":336,"randombytes":374}],372:[function(require,module,exports){
(function (Buffer){
var bn = require('bn.js');
function withPublic(paddedMsg, key) {
  return new Buffer(paddedMsg
    .toRed(bn.mont(key.modulus))
    .redPow(new bn(key.publicExponent))
    .fromRed()
    .toArray());
}

module.exports = withPublic;
}).call(this,require("buffer").Buffer)
},{"bn.js":331,"buffer":177}],373:[function(require,module,exports){
module.exports = function xor(a, b) {
  var len = a.length;
  var i = -1;
  while (++i < len) {
    a[i] ^= b[i];
  }
  return a
};
},{}],374:[function(require,module,exports){
(function (process,global,Buffer){
'use strict'

function oldBrowser () {
  throw new Error('secure random number generation not supported by this browser\nuse chrome, FireFox or Internet Explorer 11')
}

var crypto = global.crypto || global.msCrypto

if (crypto && crypto.getRandomValues) {
  module.exports = randomBytes
} else {
  module.exports = oldBrowser
}

function randomBytes (size, cb) {
  // phantomjs needs to throw
  if (size > 65536) throw new Error('requested too many random bytes')
  // in case browserify  isn't using the Uint8Array version
  var rawBytes = new global.Uint8Array(size)

  // This will not work in older browsers.
  // See https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues
  crypto.getRandomValues(rawBytes)

  // phantomjs doesn't like a buffer being passed here
  var bytes = new Buffer(rawBytes.buffer)

  if (typeof cb === 'function') {
    return process.nextTick(function () {
      cb(null, bytes)
    })
  }

  return bytes
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"_process":381,"buffer":177}],375:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      }
      throw TypeError('Uncaught, unspecified "error" event.');
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        args = Array.prototype.slice.call(arguments, 1);
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    args = Array.prototype.slice.call(arguments, 1);
    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else if (listeners) {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.prototype.listenerCount = function(type) {
  if (this._events) {
    var evlistener = this._events[type];

    if (isFunction(evlistener))
      return 1;
    else if (evlistener)
      return evlistener.length;
  }
  return 0;
};

EventEmitter.listenerCount = function(emitter, type) {
  return emitter.listenerCount(type);
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],376:[function(require,module,exports){
var http = require('http');

var https = module.exports;

for (var key in http) {
    if (http.hasOwnProperty(key)) https[key] = http[key];
};

https.request = function (params, cb) {
    if (!params) params = {};
    params.scheme = 'https';
    params.protocol = 'https:';
    return http.request.call(this, params, cb);
}

},{"http":400}],377:[function(require,module,exports){
arguments[4][52][0].apply(exports,arguments)
},{"dup":52}],378:[function(require,module,exports){
/**
 * Determine if an object is Buffer
 *
 * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * License:  MIT
 *
 * `npm install is-buffer`
 */

module.exports = function (obj) {
  return !!(obj != null &&
    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
      (obj.constructor &&
      typeof obj.constructor.isBuffer === 'function' &&
      obj.constructor.isBuffer(obj))
    ))
}

},{}],379:[function(require,module,exports){
arguments[4][71][0].apply(exports,arguments)
},{"dup":71}],380:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
}

// Split a filename into [root, dir, basename, ext], unix version
// 'root' is just a slash, or nothing.
var splitPathRe =
    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
var splitPath = function(filename) {
  return splitPathRe.exec(filename).slice(1);
};

// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};

// path.normalize(path)
// posix version
exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
};

// posix version
exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
};

// posix version
exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
};


// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
};

exports.sep = '/';
exports.delimiter = ':';

exports.dirname = function(path) {
  var result = splitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
};


exports.basename = function(path, ext) {
  var f = splitPath(path)[2];
  // TODO: make this comparison case-insensitive on windows?
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
};


exports.extname = function(path) {
  return splitPath(path)[3];
};

function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
}

// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
;

}).call(this,require('_process'))
},{"_process":381}],381:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = setTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    clearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        setTimeout(drainQueue, 0);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],382:[function(require,module,exports){
(function (global){
/*! https://mths.be/punycode v1.4.0 by @mathias */
;(function(root) {

	/** Detect free variables */
	var freeExports = typeof exports == 'object' && exports &&
		!exports.nodeType && exports;
	var freeModule = typeof module == 'object' && module &&
		!module.nodeType && module;
	var freeGlobal = typeof global == 'object' && global;
	if (
		freeGlobal.global === freeGlobal ||
		freeGlobal.window === freeGlobal ||
		freeGlobal.self === freeGlobal
	) {
		root = freeGlobal;
	}

	/**
	 * The `punycode` object.
	 * @name punycode
	 * @type Object
	 */
	var punycode,

	/** Highest positive signed 32-bit float value */
	maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1

	/** Bootstring parameters */
	base = 36,
	tMin = 1,
	tMax = 26,
	skew = 38,
	damp = 700,
	initialBias = 72,
	initialN = 128, // 0x80
	delimiter = '-', // '\x2D'

	/** Regular expressions */
	regexPunycode = /^xn--/,
	regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
	regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators

	/** Error messages */
	errors = {
		'overflow': 'Overflow: input needs wider integers to process',
		'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
		'invalid-input': 'Invalid input'
	},

	/** Convenience shortcuts */
	baseMinusTMin = base - tMin,
	floor = Math.floor,
	stringFromCharCode = String.fromCharCode,

	/** Temporary variable */
	key;

	/*--------------------------------------------------------------------------*/

	/**
	 * A generic error utility function.
	 * @private
	 * @param {String} type The error type.
	 * @returns {Error} Throws a `RangeError` with the applicable error message.
	 */
	function error(type) {
		throw new RangeError(errors[type]);
	}

	/**
	 * A generic `Array#map` utility function.
	 * @private
	 * @param {Array} array The array to iterate over.
	 * @param {Function} callback The function that gets called for every array
	 * item.
	 * @returns {Array} A new array of values returned by the callback function.
	 */
	function map(array, fn) {
		var length = array.length;
		var result = [];
		while (length--) {
			result[length] = fn(array[length]);
		}
		return result;
	}

	/**
	 * A simple `Array#map`-like wrapper to work with domain name strings or email
	 * addresses.
	 * @private
	 * @param {String} domain The domain name or email address.
	 * @param {Function} callback The function that gets called for every
	 * character.
	 * @returns {Array} A new string of characters returned by the callback
	 * function.
	 */
	function mapDomain(string, fn) {
		var parts = string.split('@');
		var result = '';
		if (parts.length > 1) {
			// In email addresses, only the domain name should be punycoded. Leave
			// the local part (i.e. everything up to `@`) intact.
			result = parts[0] + '@';
			string = parts[1];
		}
		// Avoid `split(regex)` for IE8 compatibility. See #17.
		string = string.replace(regexSeparators, '\x2E');
		var labels = string.split('.');
		var encoded = map(labels, fn).join('.');
		return result + encoded;
	}

	/**
	 * Creates an array containing the numeric code points of each Unicode
	 * character in the string. While JavaScript uses UCS-2 internally,
	 * this function will convert a pair of surrogate halves (each of which
	 * UCS-2 exposes as separate characters) into a single code point,
	 * matching UTF-16.
	 * @see `punycode.ucs2.encode`
	 * @see <https://mathiasbynens.be/notes/javascript-encoding>
	 * @memberOf punycode.ucs2
	 * @name decode
	 * @param {String} string The Unicode input string (UCS-2).
	 * @returns {Array} The new array of code points.
	 */
	function ucs2decode(string) {
		var output = [],
		    counter = 0,
		    length = string.length,
		    value,
		    extra;
		while (counter < length) {
			value = string.charCodeAt(counter++);
			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
				// high surrogate, and there is a next character
				extra = string.charCodeAt(counter++);
				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
				} else {
					// unmatched surrogate; only append this code unit, in case the next
					// code unit is the high surrogate of a surrogate pair
					output.push(value);
					counter--;
				}
			} else {
				output.push(value);
			}
		}
		return output;
	}

	/**
	 * Creates a string based on an array of numeric code points.
	 * @see `punycode.ucs2.decode`
	 * @memberOf punycode.ucs2
	 * @name encode
	 * @param {Array} codePoints The array of numeric code points.
	 * @returns {String} The new Unicode string (UCS-2).
	 */
	function ucs2encode(array) {
		return map(array, function(value) {
			var output = '';
			if (value > 0xFFFF) {
				value -= 0x10000;
				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
				value = 0xDC00 | value & 0x3FF;
			}
			output += stringFromCharCode(value);
			return output;
		}).join('');
	}

	/**
	 * Converts a basic code point into a digit/integer.
	 * @see `digitToBasic()`
	 * @private
	 * @param {Number} codePoint The basic numeric code point value.
	 * @returns {Number} The numeric value of a basic code point (for use in
	 * representing integers) in the range `0` to `base - 1`, or `base` if
	 * the code point does not represent a value.
	 */
	function basicToDigit(codePoint) {
		if (codePoint - 48 < 10) {
			return codePoint - 22;
		}
		if (codePoint - 65 < 26) {
			return codePoint - 65;
		}
		if (codePoint - 97 < 26) {
			return codePoint - 97;
		}
		return base;
	}

	/**
	 * Converts a digit/integer into a basic code point.
	 * @see `basicToDigit()`
	 * @private
	 * @param {Number} digit The numeric value of a basic code point.
	 * @returns {Number} The basic code point whose value (when used for
	 * representing integers) is `digit`, which needs to be in the range
	 * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
	 * used; else, the lowercase form is used. The behavior is undefined
	 * if `flag` is non-zero and `digit` has no uppercase form.
	 */
	function digitToBasic(digit, flag) {
		//  0..25 map to ASCII a..z or A..Z
		// 26..35 map to ASCII 0..9
		return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
	}

	/**
	 * Bias adaptation function as per section 3.4 of RFC 3492.
	 * https://tools.ietf.org/html/rfc3492#section-3.4
	 * @private
	 */
	function adapt(delta, numPoints, firstTime) {
		var k = 0;
		delta = firstTime ? floor(delta / damp) : delta >> 1;
		delta += floor(delta / numPoints);
		for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
			delta = floor(delta / baseMinusTMin);
		}
		return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
	}

	/**
	 * Converts a Punycode string of ASCII-only symbols to a string of Unicode
	 * symbols.
	 * @memberOf punycode
	 * @param {String} input The Punycode string of ASCII-only symbols.
	 * @returns {String} The resulting string of Unicode symbols.
	 */
	function decode(input) {
		// Don't use UCS-2
		var output = [],
		    inputLength = input.length,
		    out,
		    i = 0,
		    n = initialN,
		    bias = initialBias,
		    basic,
		    j,
		    index,
		    oldi,
		    w,
		    k,
		    digit,
		    t,
		    /** Cached calculation results */
		    baseMinusT;

		// Handle the basic code points: let `basic` be the number of input code
		// points before the last delimiter, or `0` if there is none, then copy
		// the first basic code points to the output.

		basic = input.lastIndexOf(delimiter);
		if (basic < 0) {
			basic = 0;
		}

		for (j = 0; j < basic; ++j) {
			// if it's not a basic code point
			if (input.charCodeAt(j) >= 0x80) {
				error('not-basic');
			}
			output.push(input.charCodeAt(j));
		}

		// Main decoding loop: start just after the last delimiter if any basic code
		// points were copied; start at the beginning otherwise.

		for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {

			// `index` is the index of the next character to be consumed.
			// Decode a generalized variable-length integer into `delta`,
			// which gets added to `i`. The overflow checking is easier
			// if we increase `i` as we go, then subtract off its starting
			// value at the end to obtain `delta`.
			for (oldi = i, w = 1, k = base; /* no condition */; k += base) {

				if (index >= inputLength) {
					error('invalid-input');
				}

				digit = basicToDigit(input.charCodeAt(index++));

				if (digit >= base || digit > floor((maxInt - i) / w)) {
					error('overflow');
				}

				i += digit * w;
				t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);

				if (digit < t) {
					break;
				}

				baseMinusT = base - t;
				if (w > floor(maxInt / baseMinusT)) {
					error('overflow');
				}

				w *= baseMinusT;

			}

			out = output.length + 1;
			bias = adapt(i - oldi, out, oldi == 0);

			// `i` was supposed to wrap around from `out` to `0`,
			// incrementing `n` each time, so we'll fix that now:
			if (floor(i / out) > maxInt - n) {
				error('overflow');
			}

			n += floor(i / out);
			i %= out;

			// Insert `n` at position `i` of the output
			output.splice(i++, 0, n);

		}

		return ucs2encode(output);
	}

	/**
	 * Converts a string of Unicode symbols (e.g. a domain name label) to a
	 * Punycode string of ASCII-only symbols.
	 * @memberOf punycode
	 * @param {String} input The string of Unicode symbols.
	 * @returns {String} The resulting Punycode string of ASCII-only symbols.
	 */
	function encode(input) {
		var n,
		    delta,
		    handledCPCount,
		    basicLength,
		    bias,
		    j,
		    m,
		    q,
		    k,
		    t,
		    currentValue,
		    output = [],
		    /** `inputLength` will hold the number of code points in `input`. */
		    inputLength,
		    /** Cached calculation results */
		    handledCPCountPlusOne,
		    baseMinusT,
		    qMinusT;

		// Convert the input in UCS-2 to Unicode
		input = ucs2decode(input);

		// Cache the length
		inputLength = input.length;

		// Initialize the state
		n = initialN;
		delta = 0;
		bias = initialBias;

		// Handle the basic code points
		for (j = 0; j < inputLength; ++j) {
			currentValue = input[j];
			if (currentValue < 0x80) {
				output.push(stringFromCharCode(currentValue));
			}
		}

		handledCPCount = basicLength = output.length;

		// `handledCPCount` is the number of code points that have been handled;
		// `basicLength` is the number of basic code points.

		// Finish the basic string - if it is not empty - with a delimiter
		if (basicLength) {
			output.push(delimiter);
		}

		// Main encoding loop:
		while (handledCPCount < inputLength) {

			// All non-basic code points < n have been handled already. Find the next
			// larger one:
			for (m = maxInt, j = 0; j < inputLength; ++j) {
				currentValue = input[j];
				if (currentValue >= n && currentValue < m) {
					m = currentValue;
				}
			}

			// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
			// but guard against overflow
			handledCPCountPlusOne = handledCPCount + 1;
			if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
				error('overflow');
			}

			delta += (m - n) * handledCPCountPlusOne;
			n = m;

			for (j = 0; j < inputLength; ++j) {
				currentValue = input[j];

				if (currentValue < n && ++delta > maxInt) {
					error('overflow');
				}

				if (currentValue == n) {
					// Represent delta as a generalized variable-length integer
					for (q = delta, k = base; /* no condition */; k += base) {
						t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
						if (q < t) {
							break;
						}
						qMinusT = q - t;
						baseMinusT = base - t;
						output.push(
							stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
						);
						q = floor(qMinusT / baseMinusT);
					}

					output.push(stringFromCharCode(digitToBasic(q, 0)));
					bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
					delta = 0;
					++handledCPCount;
				}
			}

			++delta;
			++n;

		}
		return output.join('');
	}

	/**
	 * Converts a Punycode string representing a domain name or an email address
	 * to Unicode. Only the Punycoded parts of the input will be converted, i.e.
	 * it doesn't matter if you call it on a string that has already been
	 * converted to Unicode.
	 * @memberOf punycode
	 * @param {String} input The Punycoded domain name or email address to
	 * convert to Unicode.
	 * @returns {String} The Unicode representation of the given Punycode
	 * string.
	 */
	function toUnicode(input) {
		return mapDomain(input, function(string) {
			return regexPunycode.test(string)
				? decode(string.slice(4).toLowerCase())
				: string;
		});
	}

	/**
	 * Converts a Unicode string representing a domain name or an email address to
	 * Punycode. Only the non-ASCII parts of the domain name will be converted,
	 * i.e. it doesn't matter if you call it with a domain that's already in
	 * ASCII.
	 * @memberOf punycode
	 * @param {String} input The domain name or email address to convert, as a
	 * Unicode string.
	 * @returns {String} The Punycode representation of the given domain name or
	 * email address.
	 */
	function toASCII(input) {
		return mapDomain(input, function(string) {
			return regexNonASCII.test(string)
				? 'xn--' + encode(string)
				: string;
		});
	}

	/*--------------------------------------------------------------------------*/

	/** Define the public API */
	punycode = {
		/**
		 * A string representing the current Punycode.js version number.
		 * @memberOf punycode
		 * @type String
		 */
		'version': '1.3.2',
		/**
		 * An object of methods to convert from JavaScript's internal character
		 * representation (UCS-2) to Unicode code points, and back.
		 * @see <https://mathiasbynens.be/notes/javascript-encoding>
		 * @memberOf punycode
		 * @type Object
		 */
		'ucs2': {
			'decode': ucs2decode,
			'encode': ucs2encode
		},
		'decode': decode,
		'encode': encode,
		'toASCII': toASCII,
		'toUnicode': toUnicode
	};

	/** Expose `punycode` */
	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof define == 'function' &&
		typeof define.amd == 'object' &&
		define.amd
	) {
		define('punycode', function() {
			return punycode;
		});
	} else if (freeExports && freeModule) {
		if (module.exports == freeExports) {
			// in Node.js, io.js, or RingoJS v0.8.0+
			freeModule.exports = punycode;
		} else {
			// in Narwhal or RingoJS v0.7.0-
			for (key in punycode) {
				punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
			}
		}
	} else {
		// in Rhino or a web browser
		root.punycode = punycode;
	}

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],383:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

module.exports = function(qs, sep, eq, options) {
  sep = sep || '&';
  eq = eq || '=';
  var obj = {};

  if (typeof qs !== 'string' || qs.length === 0) {
    return obj;
  }

  var regexp = /\+/g;
  qs = qs.split(sep);

  var maxKeys = 1000;
  if (options && typeof options.maxKeys === 'number') {
    maxKeys = options.maxKeys;
  }

  var len = qs.length;
  // maxKeys <= 0 means that we should not limit keys count
  if (maxKeys > 0 && len > maxKeys) {
    len = maxKeys;
  }

  for (var i = 0; i < len; ++i) {
    var x = qs[i].replace(regexp, '%20'),
        idx = x.indexOf(eq),
        kstr, vstr, k, v;

    if (idx >= 0) {
      kstr = x.substr(0, idx);
      vstr = x.substr(idx + 1);
    } else {
      kstr = x;
      vstr = '';
    }

    k = decodeURIComponent(kstr);
    v = decodeURIComponent(vstr);

    if (!hasOwnProperty(obj, k)) {
      obj[k] = v;
    } else if (isArray(obj[k])) {
      obj[k].push(v);
    } else {
      obj[k] = [obj[k], v];
    }
  }

  return obj;
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

},{}],384:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var stringifyPrimitive = function(v) {
  switch (typeof v) {
    case 'string':
      return v;

    case 'boolean':
      return v ? 'true' : 'false';

    case 'number':
      return isFinite(v) ? v : '';

    default:
      return '';
  }
};

module.exports = function(obj, sep, eq, name) {
  sep = sep || '&';
  eq = eq || '=';
  if (obj === null) {
    obj = undefined;
  }

  if (typeof obj === 'object') {
    return map(objectKeys(obj), function(k) {
      var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
      if (isArray(obj[k])) {
        return map(obj[k], function(v) {
          return ks + encodeURIComponent(stringifyPrimitive(v));
        }).join(sep);
      } else {
        return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
      }
    }).join(sep);

  }

  if (!name) return '';
  return encodeURIComponent(stringifyPrimitive(name)) + eq +
         encodeURIComponent(stringifyPrimitive(obj));
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

function map (xs, f) {
  if (xs.map) return xs.map(f);
  var res = [];
  for (var i = 0; i < xs.length; i++) {
    res.push(f(xs[i], i));
  }
  return res;
}

var objectKeys = Object.keys || function (obj) {
  var res = [];
  for (var key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key);
  }
  return res;
};

},{}],385:[function(require,module,exports){
'use strict';

exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');

},{"./decode":383,"./encode":384}],386:[function(require,module,exports){
arguments[4][65][0].apply(exports,arguments)
},{"./lib/_stream_duplex.js":387,"dup":65}],387:[function(require,module,exports){
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

'use strict';

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


module.exports = Duplex;

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/



/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
  var method = keys[v];
  if (!Duplex.prototype[method])
    Duplex.prototype[method] = Writable.prototype[method];
}

function Duplex(options) {
  if (!(this instanceof Duplex))
    return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false)
    this.readable = false;

  if (options && options.writable === false)
    this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false)
    this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended)
    return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  processNextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

},{"./_stream_readable":389,"./_stream_writable":391,"core-util-is":392,"inherits":377,"process-nextick-args":393}],388:[function(require,module,exports){
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough))
    return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function(chunk, encoding, cb) {
  cb(null, chunk);
};

},{"./_stream_transform":390,"core-util-is":392,"inherits":377}],389:[function(require,module,exports){
(function (process){
'use strict';

module.exports = Readable;

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/


/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events');

/*<replacement>*/
var EElistenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/



/*<replacement>*/
var Stream;
(function (){try{
  Stream = require('st' + 'ream');
}catch(_){}finally{
  if (!Stream)
    Stream = require('events').EventEmitter;
}}())
/*</replacement>*/

var Buffer = require('buffer').Buffer;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/



/*<replacement>*/
var debugUtil = require('util');
var debug;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var StringDecoder;

util.inherits(Readable, Stream);

var Duplex;
function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex)
    this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

var Duplex;
function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options && typeof options.read === 'function')
    this._read = options.read;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (!state.objectMode && typeof chunk === 'string') {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

Readable.prototype.isPaused = function() {
  return this._readableState.flowing === false;
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      if (!addToFront)
        state.reading = false;

      // if we want the data now, just emit it.
      if (state.flowing && state.length === 0 && !state.sync) {
        stream.emit('data', chunk);
        stream.read(0);
      } else {
        // update the buffer info.
        state.length += state.objectMode ? 1 : chunk.length;
        if (addToFront)
          state.buffer.unshift(chunk);
        else
          state.buffer.push(chunk);

        if (state.needReadable)
          emitReadable(stream);
      }

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}


// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = computeNewHighWaterMark(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else {
      return state.length;
    }
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  debug('read', n);
  var state = this._readableState;
  var nOrig = n;

  if (typeof n !== 'number' || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended)
      endReadable(this);
    else
      emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0)
      endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  }

  if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read pushed data synchronously, then `reading` will be false,
  // and we need to re-evaluate how much data we can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  var ret;
  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we tried to read() past the EOF, then emit end on the next tick.
  if (nOrig !== n && state.ended && state.length === 0)
    endReadable(this);

  if (ret !== null)
    this.emit('data', ret);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!(Buffer.isBuffer(chunk)) &&
      typeof chunk !== 'string' &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync)
      processNextTick(emitReadable_, stream);
    else
      emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    processNextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    processNextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    debug('onunpipe');
    if (readable === src) {
      cleanup();
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain &&
        (!dest._writableState || dest._writableState.needDrain))
      ondrain();
  }

  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    var ret = dest.write(chunk);
    if (false === ret) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      if (state.pipesCount === 1 &&
          state.pipes[0] === dest &&
          src.listenerCount('data') === 1 &&
          !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];


  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain)
      state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  // If listening to data, and it has not explicitly been paused,
  // then call resume to start the flow of data on the next tick.
  if (ev === 'data' && false !== this._readableState.flowing) {
    this.resume();
  }

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        processNextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    processNextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading)
    stream.read(0);
}

Readable.prototype.pause = function() {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  if (state.flowing) {
    do {
      var chunk = stream.read();
    } while (null !== chunk && state.flowing);
  }
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    debug('wrapped data');
    if (state.decoder)
      chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined))
      return;
    else if (!state.objectMode && (!chunk || !chunk.length))
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }; }(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};


// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else if (list.length === 1)
      ret = list[0];
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0)
    throw new Error('endReadable called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    processNextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf (xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}

}).call(this,require('_process'))
},{"./_stream_duplex":387,"_process":381,"buffer":177,"core-util-is":392,"events":375,"inherits":377,"isarray":379,"process-nextick-args":393,"string_decoder/":406,"util":163}],390:[function(require,module,exports){
// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

'use strict';

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);


function TransformState(stream) {
  this.afterTransform = function(er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb)
    return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (data !== null && data !== undefined)
    stream.push(data);

  if (cb)
    cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}


function Transform(options) {
  if (!(this instanceof Transform))
    return new Transform(options);

  Duplex.call(this, options);

  this._transformState = new TransformState(this);

  // when the writable side finishes, then flush out anything remaining.
  var stream = this;

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function')
      this._transform = options.transform;

    if (typeof options.flush === 'function')
      this._flush = options.flush;
  }

  this.once('prefinish', function() {
    if (typeof this._flush === 'function')
      this._flush(function(er) {
        done(stream, er);
      });
    else
      done(stream);
  });
}

Transform.prototype.push = function(chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
  throw new Error('not implemented');
};

Transform.prototype._write = function(chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform ||
        rs.needReadable ||
        rs.length < rs.highWaterMark)
      this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};


function done(stream, er) {
  if (er)
    return stream.emit('error', er);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var ts = stream._transformState;

  if (ws.length)
    throw new Error('calling transform done when ws.length != 0');

  if (ts.transforming)
    throw new Error('calling transform done when still transforming');

  return stream.push(null);
}

},{"./_stream_duplex":387,"core-util-is":392,"inherits":377}],391:[function(require,module,exports){
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.

'use strict';

module.exports = Writable;

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/


/*<replacement>*/
var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/



/*<replacement>*/
var Stream;
(function (){try{
  Stream = require('st' + 'ream');
}catch(_){}finally{
  if (!Stream)
    Stream = require('events').EventEmitter;
}}())
/*</replacement>*/

var Buffer = require('buffer').Buffer;

util.inherits(Writable, Stream);

function nop() {}

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

var Duplex;
function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex)
    this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function(er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

WritableState.prototype.getBuffer = function writableStateGetBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function (){try {
Object.defineProperty(WritableState.prototype, 'buffer', {
  get: internalUtil.deprecate(function() {
    return this.getBuffer();
  }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' +
     'instead.')
});
}catch(_){}}());


var Duplex;
function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function')
      this._write = options.write;

    if (typeof options.writev === 'function')
      this._writev = options.writev;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
  this.emit('error', new Error('Cannot pipe. Not readable.'));
};


function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  processNextTick(cb, er);
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;

  if (!(Buffer.isBuffer(chunk)) &&
      typeof chunk !== 'string' &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    processNextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (typeof cb !== 'function')
    cb = nop;

  if (state.ended)
    writeAfterEnd(this, cb);
  else if (validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function() {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function() {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing &&
        !state.corked &&
        !state.finished &&
        !state.bufferProcessing &&
        state.bufferedRequest)
      clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string')
    encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64',
'ucs2', 'ucs-2','utf16le', 'utf-16le', 'raw']
.indexOf((encoding + '').toLowerCase()) > -1))
    throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      typeof chunk === 'string') {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);

  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret)
    state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev)
    stream._writev(chunk, state.onwrite);
  else
    stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;
  if (sync)
    processNextTick(cb, er);
  else
    cb(er);

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er)
    onwriteError(stream, state, sync, er, cb);
  else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished &&
        !state.corked &&
        !state.bufferProcessing &&
        state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      processNextTick(afterWrite, stream, state, finished, cb);
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}


// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var buffer = [];
    var cbs = [];
    while (entry) {
      cbs.push(entry.callback);
      buffer.push(entry);
      entry = entry.next;
    }

    // count the one we are adding, as well.
    // TODO(isaacs) clean this up
    state.pendingcb++;
    state.lastBufferedRequest = null;
    doWrite(stream, state, true, state.length, buffer, '', function(err) {
      for (var i = 0; i < cbs.length; i++) {
        state.pendingcb--;
        cbs[i](err);
      }
    });

    // Clear buffer
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null)
      state.lastBufferedRequest = null;
  }
  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function(chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined)
    this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(state) {
  return (state.ending &&
          state.length === 0 &&
          state.bufferedRequest === null &&
          !state.finished &&
          !state.writing);
}

function prefinish(stream, state) {
  if (!state.prefinished) {
    state.prefinished = true;
    stream.emit('prefinish');
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    if (state.pendingcb === 0) {
      prefinish(stream, state);
      state.finished = true;
      stream.emit('finish');
    } else {
      prefinish(stream, state);
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      processNextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

},{"./_stream_duplex":387,"buffer":177,"core-util-is":392,"events":375,"inherits":377,"process-nextick-args":393,"util-deprecate":394}],392:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

}).call(this,{"isBuffer":require("../../../../insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../../../insert-module-globals/node_modules/is-buffer/index.js":378}],393:[function(require,module,exports){
(function (process){
'use strict';

if (!process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = nextTick;
} else {
  module.exports = process.nextTick;
}

function nextTick(fn) {
  var args = new Array(arguments.length - 1);
  var i = 0;
  while (i < args.length) {
    args[i++] = arguments[i];
  }
  process.nextTick(function afterTick() {
    fn.apply(null, args);
  });
}

}).call(this,require('_process'))
},{"_process":381}],394:[function(require,module,exports){
(function (global){

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],395:[function(require,module,exports){
module.exports = require("./lib/_stream_passthrough.js")

},{"./lib/_stream_passthrough.js":388}],396:[function(require,module,exports){
var Stream = (function (){
  try {
    return require('st' + 'ream'); // hack to fix a circular dependency issue when used with browserify
  } catch(_){}
}());
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = Stream || exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":387,"./lib/_stream_passthrough.js":388,"./lib/_stream_readable.js":389,"./lib/_stream_transform.js":390,"./lib/_stream_writable.js":391}],397:[function(require,module,exports){
module.exports = require("./lib/_stream_transform.js")

},{"./lib/_stream_transform.js":390}],398:[function(require,module,exports){
module.exports = require("./lib/_stream_writable.js")

},{"./lib/_stream_writable.js":391}],399:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":375,"inherits":377,"readable-stream/duplex.js":386,"readable-stream/passthrough.js":395,"readable-stream/readable.js":396,"readable-stream/transform.js":397,"readable-stream/writable.js":398}],400:[function(require,module,exports){
(function (global){
var ClientRequest = require('./lib/request')
var extend = require('xtend')
var statusCodes = require('builtin-status-codes')
var url = require('url')

var http = exports

http.request = function (opts, cb) {
	if (typeof opts === 'string')
		opts = url.parse(opts)
	else
		opts = extend(opts)

	// Normally, the page is loaded from http or https, so not specifying a protocol
	// will result in a (valid) protocol-relative url. However, this won't work if
	// the protocol is something else, like 'file:'
	var defaultProtocol = global.location.protocol.search(/^https?:$/) === -1 ? 'http:' : ''

	var protocol = opts.protocol || defaultProtocol
	var host = opts.hostname || opts.host
	var port = opts.port
	var path = opts.path || '/'

	// Necessary for IPv6 addresses
	if (host && host.indexOf(':') !== -1)
		host = '[' + host + ']'

	// This may be a relative url. The browser should always be able to interpret it correctly.
	opts.url = (host ? (protocol + '//' + host) : '') + (port ? ':' + port : '') + path
	opts.method = (opts.method || 'GET').toUpperCase()
	opts.headers = opts.headers || {}

	// Also valid opts.auth, opts.mode

	var req = new ClientRequest(opts)
	if (cb)
		req.on('response', cb)
	return req
}

http.get = function get (opts, cb) {
	var req = http.request(opts, cb)
	req.end()
	return req
}

http.Agent = function () {}
http.Agent.defaultMaxSockets = 4

http.STATUS_CODES = statusCodes

http.METHODS = [
	'CHECKOUT',
	'CONNECT',
	'COPY',
	'DELETE',
	'GET',
	'HEAD',
	'LOCK',
	'M-SEARCH',
	'MERGE',
	'MKACTIVITY',
	'MKCOL',
	'MOVE',
	'NOTIFY',
	'OPTIONS',
	'PATCH',
	'POST',
	'PROPFIND',
	'PROPPATCH',
	'PURGE',
	'PUT',
	'REPORT',
	'SEARCH',
	'SUBSCRIBE',
	'TRACE',
	'UNLOCK',
	'UNSUBSCRIBE'
]
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./lib/request":402,"builtin-status-codes":404,"url":407,"xtend":413}],401:[function(require,module,exports){
(function (global){
exports.fetch = isFunction(global.fetch) && isFunction(global.ReadableByteStream)

exports.blobConstructor = false
try {
	new Blob([new ArrayBuffer(1)])
	exports.blobConstructor = true
} catch (e) {}

var xhr = new global.XMLHttpRequest()
// If location.host is empty, e.g. if this page/worker was loaded
// from a Blob, then use example.com to avoid an error
xhr.open('GET', global.location.host ? '/' : 'https://example.com')

function checkTypeSupport (type) {
	try {
		xhr.responseType = type
		return xhr.responseType === type
	} catch (e) {}
	return false
}

// For some strange reason, Safari 7.0 reports typeof global.ArrayBuffer === 'object'.
// Safari 7.1 appears to have fixed this bug.
var haveArrayBuffer = typeof global.ArrayBuffer !== 'undefined'
var haveSlice = haveArrayBuffer && isFunction(global.ArrayBuffer.prototype.slice)

exports.arraybuffer = haveArrayBuffer && checkTypeSupport('arraybuffer')
// These next two tests unavoidably show warnings in Chrome. Since fetch will always
// be used if it's available, just return false for these to avoid the warnings.
exports.msstream = !exports.fetch && haveSlice && checkTypeSupport('ms-stream')
exports.mozchunkedarraybuffer = !exports.fetch && haveArrayBuffer &&
	checkTypeSupport('moz-chunked-arraybuffer')
exports.overrideMimeType = isFunction(xhr.overrideMimeType)
exports.vbArray = isFunction(global.VBArray)

function isFunction (value) {
  return typeof value === 'function'
}

xhr = null // Help gc

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],402:[function(require,module,exports){
(function (process,global,Buffer){
// var Base64 = require('Base64')
var capability = require('./capability')
var inherits = require('inherits')
var response = require('./response')
var stream = require('stream')
var toArrayBuffer = require('to-arraybuffer')

var IncomingMessage = response.IncomingMessage
var rStates = response.readyStates

function decideMode (preferBinary) {
	if (capability.fetch) {
		return 'fetch'
	} else if (capability.mozchunkedarraybuffer) {
		return 'moz-chunked-arraybuffer'
	} else if (capability.msstream) {
		return 'ms-stream'
	} else if (capability.arraybuffer && preferBinary) {
		return 'arraybuffer'
	} else if (capability.vbArray && preferBinary) {
		return 'text:vbarray'
	} else {
		return 'text'
	}
}

var ClientRequest = module.exports = function (opts) {
	var self = this
	stream.Writable.call(self)

	self._opts = opts
	self._body = []
	self._headers = {}
	if (opts.auth)
		self.setHeader('Authorization', 'Basic ' + new Buffer(opts.auth).toString('base64'))
	Object.keys(opts.headers).forEach(function (name) {
		self.setHeader(name, opts.headers[name])
	})

	var preferBinary
	if (opts.mode === 'prefer-streaming') {
		// If streaming is a high priority but binary compatibility and
		// the accuracy of the 'content-type' header aren't
		preferBinary = false
	} else if (opts.mode === 'allow-wrong-content-type') {
		// If streaming is more important than preserving the 'content-type' header
		preferBinary = !capability.overrideMimeType
	} else if (!opts.mode || opts.mode === 'default' || opts.mode === 'prefer-fast') {
		// Use binary if text streaming may corrupt data or the content-type header, or for speed
		preferBinary = true
	} else {
		throw new Error('Invalid value for opts.mode')
	}
	self._mode = decideMode(preferBinary)

	self.on('finish', function () {
		self._onFinish()
	})
}

inherits(ClientRequest, stream.Writable)

ClientRequest.prototype.setHeader = function (name, value) {
	var self = this
	var lowerName = name.toLowerCase()
	// This check is not necessary, but it prevents warnings from browsers about setting unsafe
	// headers. To be honest I'm not entirely sure hiding these warnings is a good thing, but
	// http-browserify did it, so I will too.
	if (unsafeHeaders.indexOf(lowerName) !== -1)
		return

	self._headers[lowerName] = {
		name: name,
		value: value
	}
}

ClientRequest.prototype.getHeader = function (name) {
	var self = this
	return self._headers[name.toLowerCase()].value
}

ClientRequest.prototype.removeHeader = function (name) {
	var self = this
	delete self._headers[name.toLowerCase()]
}

ClientRequest.prototype._onFinish = function () {
	var self = this

	if (self._destroyed)
		return
	var opts = self._opts

	var headersObj = self._headers
	var body
	if (opts.method === 'POST' || opts.method === 'PUT' || opts.method === 'PATCH') {
		if (capability.blobConstructor) {
			body = new global.Blob(self._body.map(function (buffer) {
				return toArrayBuffer(buffer)
			}), {
				type: (headersObj['content-type'] || {}).value || ''
			})
		} else {
			// get utf8 string
			body = Buffer.concat(self._body).toString()
		}
	}

	if (self._mode === 'fetch') {
		var headers = Object.keys(headersObj).map(function (name) {
			return [headersObj[name].name, headersObj[name].value]
		})

		global.fetch(self._opts.url, {
			method: self._opts.method,
			headers: headers,
			body: body,
			mode: 'cors',
			credentials: opts.withCredentials ? 'include' : 'same-origin'
		}).then(function (response) {
			self._fetchResponse = response
			self._connect()
		}, function (reason) {
			self.emit('error', reason)
		})
	} else {
		var xhr = self._xhr = new global.XMLHttpRequest()
		try {
			xhr.open(self._opts.method, self._opts.url, true)
		} catch (err) {
			process.nextTick(function () {
				self.emit('error', err)
			})
			return
		}

		// Can't set responseType on really old browsers
		if ('responseType' in xhr)
			xhr.responseType = self._mode.split(':')[0]

		if ('withCredentials' in xhr)
			xhr.withCredentials = !!opts.withCredentials

		if (self._mode === 'text' && 'overrideMimeType' in xhr)
			xhr.overrideMimeType('text/plain; charset=x-user-defined')

		Object.keys(headersObj).forEach(function (name) {
			xhr.setRequestHeader(headersObj[name].name, headersObj[name].value)
		})

		self._response = null
		xhr.onreadystatechange = function () {
			switch (xhr.readyState) {
				case rStates.LOADING:
				case rStates.DONE:
					self._onXHRProgress()
					break
			}
		}
		// Necessary for streaming in Firefox, since xhr.response is ONLY defined
		// in onprogress, not in onreadystatechange with xhr.readyState = 3
		if (self._mode === 'moz-chunked-arraybuffer') {
			xhr.onprogress = function () {
				self._onXHRProgress()
			}
		}

		xhr.onerror = function () {
			if (self._destroyed)
				return
			self.emit('error', new Error('XHR error'))
		}

		try {
			xhr.send(body)
		} catch (err) {
			process.nextTick(function () {
				self.emit('error', err)
			})
			return
		}
	}
}

/**
 * Checks if xhr.status is readable and non-zero, indicating no error.
 * Even though the spec says it should be available in readyState 3,
 * accessing it throws an exception in IE8
 */
function statusValid (xhr) {
	try {
		var status = xhr.status
		return (status !== null && status !== 0)
	} catch (e) {
		return false
	}
}

ClientRequest.prototype._onXHRProgress = function () {
	var self = this

	if (!statusValid(self._xhr) || self._destroyed)
		return

	if (!self._response)
		self._connect()

	self._response._onXHRProgress()
}

ClientRequest.prototype._connect = function () {
	var self = this

	if (self._destroyed)
		return

	self._response = new IncomingMessage(self._xhr, self._fetchResponse, self._mode)
	self.emit('response', self._response)
}

ClientRequest.prototype._write = function (chunk, encoding, cb) {
	var self = this

	self._body.push(chunk)
	cb()
}

ClientRequest.prototype.abort = ClientRequest.prototype.destroy = function () {
	var self = this
	self._destroyed = true
	if (self._response)
		self._response._destroyed = true
	if (self._xhr)
		self._xhr.abort()
	// Currently, there isn't a way to truly abort a fetch.
	// If you like bikeshedding, see https://github.com/whatwg/fetch/issues/27
}

ClientRequest.prototype.end = function (data, encoding, cb) {
	var self = this
	if (typeof data === 'function') {
		cb = data
		data = undefined
	}

	stream.Writable.prototype.end.call(self, data, encoding, cb)
}

ClientRequest.prototype.flushHeaders = function () {}
ClientRequest.prototype.setTimeout = function () {}
ClientRequest.prototype.setNoDelay = function () {}
ClientRequest.prototype.setSocketKeepAlive = function () {}

// Taken from http://www.w3.org/TR/XMLHttpRequest/#the-setrequestheader%28%29-method
var unsafeHeaders = [
	'accept-charset',
	'accept-encoding',
	'access-control-request-headers',
	'access-control-request-method',
	'connection',
	'content-length',
	'cookie',
	'cookie2',
	'date',
	'dnt',
	'expect',
	'host',
	'keep-alive',
	'origin',
	'referer',
	'te',
	'trailer',
	'transfer-encoding',
	'upgrade',
	'user-agent',
	'via'
]

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./capability":401,"./response":403,"_process":381,"buffer":177,"inherits":377,"stream":399,"to-arraybuffer":405}],403:[function(require,module,exports){
(function (process,global,Buffer){
var capability = require('./capability')
var inherits = require('inherits')
var stream = require('stream')

var rStates = exports.readyStates = {
	UNSENT: 0,
	OPENED: 1,
	HEADERS_RECEIVED: 2,
	LOADING: 3,
	DONE: 4
}

var IncomingMessage = exports.IncomingMessage = function (xhr, response, mode) {
	var self = this
	stream.Readable.call(self)

	self._mode = mode
	self.headers = {}
	self.rawHeaders = []
	self.trailers = {}
	self.rawTrailers = []

	// Fake the 'close' event, but only once 'end' fires
	self.on('end', function () {
		// The nextTick is necessary to prevent the 'request' module from causing an infinite loop
		process.nextTick(function () {
			self.emit('close')
		})
	})

	if (mode === 'fetch') {
		self._fetchResponse = response

		self.statusCode = response.status
		self.statusMessage = response.statusText
		// backwards compatible version of for (<item> of <iterable>):
		// for (var <item>,_i,_it = <iterable>[Symbol.iterator](); <item> = (_i = _it.next()).value,!_i.done;)
		for (var header, _i, _it = response.headers[Symbol.iterator](); header = (_i = _it.next()).value, !_i.done;) {
			self.headers[header[0].toLowerCase()] = header[1]
			self.rawHeaders.push(header[0], header[1])
		}

		// TODO: this doesn't respect backpressure. Once WritableStream is available, this can be fixed
		var reader = response.body.getReader()
		function read () {
			reader.read().then(function (result) {
				if (self._destroyed)
					return
				if (result.done) {
					self.push(null)
					return
				}
				self.push(new Buffer(result.value))
				read()
			})
		}
		read()

	} else {
		self._xhr = xhr
		self._pos = 0

		self.statusCode = xhr.status
		self.statusMessage = xhr.statusText
		var headers = xhr.getAllResponseHeaders().split(/\r?\n/)
		headers.forEach(function (header) {
			var matches = header.match(/^([^:]+):\s*(.*)/)
			if (matches) {
				var key = matches[1].toLowerCase()
				if (self.headers[key] !== undefined)
					self.headers[key] += ', ' + matches[2]
				else
					self.headers[key] = matches[2]
				self.rawHeaders.push(matches[1], matches[2])
			}
		})

		self._charset = 'x-user-defined'
		if (!capability.overrideMimeType) {
			var mimeType = self.rawHeaders['mime-type']
			if (mimeType) {
				var charsetMatch = mimeType.match(/;\s*charset=([^;])(;|$)/)
				if (charsetMatch) {
					self._charset = charsetMatch[1].toLowerCase()
				}
			}
			if (!self._charset)
				self._charset = 'utf-8' // best guess
		}
	}
}

inherits(IncomingMessage, stream.Readable)

IncomingMessage.prototype._read = function () {}

IncomingMessage.prototype._onXHRProgress = function () {
	var self = this

	var xhr = self._xhr

	var response = null
	switch (self._mode) {
		case 'text:vbarray': // For IE9
			if (xhr.readyState !== rStates.DONE)
				break
			try {
				// This fails in IE8
				response = new global.VBArray(xhr.responseBody).toArray()
			} catch (e) {}
			if (response !== null) {
				self.push(new Buffer(response))
				break
			}
			// Falls through in IE8	
		case 'text':
			try { // This will fail when readyState = 3 in IE9. Switch mode and wait for readyState = 4
				response = xhr.responseText
			} catch (e) {
				self._mode = 'text:vbarray'
				break
			}
			if (response.length > self._pos) {
				var newData = response.substr(self._pos)
				if (self._charset === 'x-user-defined') {
					var buffer = new Buffer(newData.length)
					for (var i = 0; i < newData.length; i++)
						buffer[i] = newData.charCodeAt(i) & 0xff

					self.push(buffer)
				} else {
					self.push(newData, self._charset)
				}
				self._pos = response.length
			}
			break
		case 'arraybuffer':
			if (xhr.readyState !== rStates.DONE)
				break
			response = xhr.response
			self.push(new Buffer(new Uint8Array(response)))
			break
		case 'moz-chunked-arraybuffer': // take whole
			response = xhr.response
			if (xhr.readyState !== rStates.LOADING || !response)
				break
			self.push(new Buffer(new Uint8Array(response)))
			break
		case 'ms-stream':
			response = xhr.response
			if (xhr.readyState !== rStates.LOADING)
				break
			var reader = new global.MSStreamReader()
			reader.onprogress = function () {
				if (reader.result.byteLength > self._pos) {
					self.push(new Buffer(new Uint8Array(reader.result.slice(self._pos))))
					self._pos = reader.result.byteLength
				}
			}
			reader.onload = function () {
				self.push(null)
			}
			// reader.onerror = ??? // TODO: this
			reader.readAsArrayBuffer(response)
			break
	}

	// The ms-stream case handles end separately in reader.onload()
	if (self._xhr.readyState === rStates.DONE && self._mode !== 'ms-stream') {
		self.push(null)
	}
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"./capability":401,"_process":381,"buffer":177,"inherits":377,"stream":399}],404:[function(require,module,exports){
module.exports = {
  "100": "Continue",
  "101": "Switching Protocols",
  "102": "Processing",
  "200": "OK",
  "201": "Created",
  "202": "Accepted",
  "203": "Non-Authoritative Information",
  "204": "No Content",
  "205": "Reset Content",
  "206": "Partial Content",
  "207": "Multi-Status",
  "300": "Multiple Choices",
  "301": "Moved Permanently",
  "302": "Moved Temporarily",
  "303": "See Other",
  "304": "Not Modified",
  "305": "Use Proxy",
  "307": "Temporary Redirect",
  "308": "Permanent Redirect",
  "400": "Bad Request",
  "401": "Unauthorized",
  "402": "Payment Required",
  "403": "Forbidden",
  "404": "Not Found",
  "405": "Method Not Allowed",
  "406": "Not Acceptable",
  "407": "Proxy Authentication Required",
  "408": "Request Time-out",
  "409": "Conflict",
  "410": "Gone",
  "411": "Length Required",
  "412": "Precondition Failed",
  "413": "Request Entity Too Large",
  "414": "Request-URI Too Large",
  "415": "Unsupported Media Type",
  "416": "Requested Range Not Satisfiable",
  "417": "Expectation Failed",
  "418": "I'm a teapot",
  "422": "Unprocessable Entity",
  "423": "Locked",
  "424": "Failed Dependency",
  "425": "Unordered Collection",
  "426": "Upgrade Required",
  "428": "Precondition Required",
  "429": "Too Many Requests",
  "431": "Request Header Fields Too Large",
  "500": "Internal Server Error",
  "501": "Not Implemented",
  "502": "Bad Gateway",
  "503": "Service Unavailable",
  "504": "Gateway Time-out",
  "505": "HTTP Version Not Supported",
  "506": "Variant Also Negotiates",
  "507": "Insufficient Storage",
  "509": "Bandwidth Limit Exceeded",
  "510": "Not Extended",
  "511": "Network Authentication Required"
}

},{}],405:[function(require,module,exports){
var Buffer = require('buffer').Buffer

module.exports = function (buf) {
	// If the buffer is backed by a Uint8Array, a faster version will work
	if (buf instanceof Uint8Array) {
		// If the buffer isn't a subarray, return the underlying ArrayBuffer
		if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
			return buf.buffer
		} else if (typeof buf.buffer.slice === 'function') {
			// Otherwise we need to get a proper copy
			return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength)
		}
	}

	if (Buffer.isBuffer(buf)) {
		// This is the slow version that will work with any Buffer
		// implementation (even in old browsers)
		var arrayCopy = new Uint8Array(buf.length)
		var len = buf.length
		for (var i = 0; i < len; i++) {
			arrayCopy[i] = buf[i]
		}
		return arrayCopy.buffer
	} else {
		throw new Error('Argument must be a Buffer')
	}
}

},{"buffer":177}],406:[function(require,module,exports){
arguments[4][72][0].apply(exports,arguments)
},{"buffer":177,"dup":72}],407:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var punycode = require('punycode');
var util = require('./util');

exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;

exports.Url = Url;

function Url() {
  this.protocol = null;
  this.slashes = null;
  this.auth = null;
  this.host = null;
  this.port = null;
  this.hostname = null;
  this.hash = null;
  this.search = null;
  this.query = null;
  this.pathname = null;
  this.path = null;
  this.href = null;
}

// Reference: RFC 3986, RFC 1808, RFC 2396

// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
    portPattern = /:[0-9]*$/,

    // Special case for a simple path URL
    simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/,

    // RFC 2396: characters reserved for delimiting URLs.
    // We actually just auto-escape these.
    delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],

    // RFC 2396: characters not allowed for various reasons.
    unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),

    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.
    autoEscape = ['\''].concat(unwise),
    // Characters that are never ever allowed in a hostname.
    // Note that any invalid chars are also handled, but these
    // are the ones that are *expected* to be seen, so we fast-path
    // them.
    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
    hostEndingChars = ['/', '?', '#'],
    hostnameMaxLen = 255,
    hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,
    hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,
    // protocols that can allow "unsafe" and "unwise" chars.
    unsafeProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that never have a hostname.
    hostlessProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that always contain a // bit.
    slashedProtocol = {
      'http': true,
      'https': true,
      'ftp': true,
      'gopher': true,
      'file': true,
      'http:': true,
      'https:': true,
      'ftp:': true,
      'gopher:': true,
      'file:': true
    },
    querystring = require('querystring');

function urlParse(url, parseQueryString, slashesDenoteHost) {
  if (url && util.isObject(url) && url instanceof Url) return url;

  var u = new Url;
  u.parse(url, parseQueryString, slashesDenoteHost);
  return u;
}

Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
  if (!util.isString(url)) {
    throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
  }

  // Copy chrome, IE, opera backslash-handling behavior.
  // Back slashes before the query string get converted to forward slashes
  // See: https://code.google.com/p/chromium/issues/detail?id=25916
  var queryIndex = url.indexOf('?'),
      splitter =
          (queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#',
      uSplit = url.split(splitter),
      slashRegex = /\\/g;
  uSplit[0] = uSplit[0].replace(slashRegex, '/');
  url = uSplit.join(splitter);

  var rest = url;

  // trim before proceeding.
  // This is to support parse stuff like "  http://foo.com  \n"
  rest = rest.trim();

  if (!slashesDenoteHost && url.split('#').length === 1) {
    // Try fast path regexp
    var simplePath = simplePathPattern.exec(rest);
    if (simplePath) {
      this.path = rest;
      this.href = rest;
      this.pathname = simplePath[1];
      if (simplePath[2]) {
        this.search = simplePath[2];
        if (parseQueryString) {
          this.query = querystring.parse(this.search.substr(1));
        } else {
          this.query = this.search.substr(1);
        }
      } else if (parseQueryString) {
        this.search = '';
        this.query = {};
      }
      return this;
    }
  }

  var proto = protocolPattern.exec(rest);
  if (proto) {
    proto = proto[0];
    var lowerProto = proto.toLowerCase();
    this.protocol = lowerProto;
    rest = rest.substr(proto.length);
  }

  // figure out if it's got a host
  // user@server is *always* interpreted as a hostname, and url
  // resolution will treat //foo/bar as host=foo,path=bar because that's
  // how the browser resolves relative URLs.
  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
    var slashes = rest.substr(0, 2) === '//';
    if (slashes && !(proto && hostlessProtocol[proto])) {
      rest = rest.substr(2);
      this.slashes = true;
    }
  }

  if (!hostlessProtocol[proto] &&
      (slashes || (proto && !slashedProtocol[proto]))) {

    // there's a hostname.
    // the first instance of /, ?, ;, or # ends the host.
    //
    // If there is an @ in the hostname, then non-host chars *are* allowed
    // to the left of the last @ sign, unless some host-ending character
    // comes *before* the @-sign.
    // URLs are obnoxious.
    //
    // ex:
    // http://a@b@c/ => user:a@b host:c
    // http://a@b?@c => user:a host:c path:/?@c

    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
    // Review our test case against browsers more comprehensively.

    // find the first instance of any hostEndingChars
    var hostEnd = -1;
    for (var i = 0; i < hostEndingChars.length; i++) {
      var hec = rest.indexOf(hostEndingChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }

    // at this point, either we have an explicit point where the
    // auth portion cannot go past, or the last @ char is the decider.
    var auth, atSign;
    if (hostEnd === -1) {
      // atSign can be anywhere.
      atSign = rest.lastIndexOf('@');
    } else {
      // atSign must be in auth portion.
      // http://a@b/c@d => host:b auth:a path:/c@d
      atSign = rest.lastIndexOf('@', hostEnd);
    }

    // Now we have a portion which is definitely the auth.
    // Pull that off.
    if (atSign !== -1) {
      auth = rest.slice(0, atSign);
      rest = rest.slice(atSign + 1);
      this.auth = decodeURIComponent(auth);
    }

    // the host is the remaining to the left of the first non-host char
    hostEnd = -1;
    for (var i = 0; i < nonHostChars.length; i++) {
      var hec = rest.indexOf(nonHostChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }
    // if we still have not hit it, then the entire thing is a host.
    if (hostEnd === -1)
      hostEnd = rest.length;

    this.host = rest.slice(0, hostEnd);
    rest = rest.slice(hostEnd);

    // pull out port.
    this.parseHost();

    // we've indicated that there is a hostname,
    // so even if it's empty, it has to be present.
    this.hostname = this.hostname || '';

    // if hostname begins with [ and ends with ]
    // assume that it's an IPv6 address.
    var ipv6Hostname = this.hostname[0] === '[' &&
        this.hostname[this.hostname.length - 1] === ']';

    // validate a little.
    if (!ipv6Hostname) {
      var hostparts = this.hostname.split(/\./);
      for (var i = 0, l = hostparts.length; i < l; i++) {
        var part = hostparts[i];
        if (!part) continue;
        if (!part.match(hostnamePartPattern)) {
          var newpart = '';
          for (var j = 0, k = part.length; j < k; j++) {
            if (part.charCodeAt(j) > 127) {
              // we replace non-ASCII char with a temporary placeholder
              // we need this to make sure size of hostname is not
              // broken by replacing non-ASCII by nothing
              newpart += 'x';
            } else {
              newpart += part[j];
            }
          }
          // we test again with ASCII char only
          if (!newpart.match(hostnamePartPattern)) {
            var validParts = hostparts.slice(0, i);
            var notHost = hostparts.slice(i + 1);
            var bit = part.match(hostnamePartStart);
            if (bit) {
              validParts.push(bit[1]);
              notHost.unshift(bit[2]);
            }
            if (notHost.length) {
              rest = '/' + notHost.join('.') + rest;
            }
            this.hostname = validParts.join('.');
            break;
          }
        }
      }
    }

    if (this.hostname.length > hostnameMaxLen) {
      this.hostname = '';
    } else {
      // hostnames are always lower case.
      this.hostname = this.hostname.toLowerCase();
    }

    if (!ipv6Hostname) {
      // IDNA Support: Returns a punycoded representation of "domain".
      // It only converts parts of the domain name that
      // have non-ASCII characters, i.e. it doesn't matter if
      // you call it with a domain that already is ASCII-only.
      this.hostname = punycode.toASCII(this.hostname);
    }

    var p = this.port ? ':' + this.port : '';
    var h = this.hostname || '';
    this.host = h + p;
    this.href += this.host;

    // strip [ and ] from the hostname
    // the host field still retains them, though
    if (ipv6Hostname) {
      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
      if (rest[0] !== '/') {
        rest = '/' + rest;
      }
    }
  }

  // now rest is set to the post-host stuff.
  // chop off any delim chars.
  if (!unsafeProtocol[lowerProto]) {

    // First, make 100% sure that any "autoEscape" chars get
    // escaped, even if encodeURIComponent doesn't think they
    // need to be.
    for (var i = 0, l = autoEscape.length; i < l; i++) {
      var ae = autoEscape[i];
      if (rest.indexOf(ae) === -1)
        continue;
      var esc = encodeURIComponent(ae);
      if (esc === ae) {
        esc = escape(ae);
      }
      rest = rest.split(ae).join(esc);
    }
  }


  // chop off from the tail first.
  var hash = rest.indexOf('#');
  if (hash !== -1) {
    // got a fragment string.
    this.hash = rest.substr(hash);
    rest = rest.slice(0, hash);
  }
  var qm = rest.indexOf('?');
  if (qm !== -1) {
    this.search = rest.substr(qm);
    this.query = rest.substr(qm + 1);
    if (parseQueryString) {
      this.query = querystring.parse(this.query);
    }
    rest = rest.slice(0, qm);
  } else if (parseQueryString) {
    // no query string, but parseQueryString still requested
    this.search = '';
    this.query = {};
  }
  if (rest) this.pathname = rest;
  if (slashedProtocol[lowerProto] &&
      this.hostname && !this.pathname) {
    this.pathname = '/';
  }

  //to support http.request
  if (this.pathname || this.search) {
    var p = this.pathname || '';
    var s = this.search || '';
    this.path = p + s;
  }

  // finally, reconstruct the href based on what has been validated.
  this.href = this.format();
  return this;
};

// format a parsed object into a url string
function urlFormat(obj) {
  // ensure it's an object, and not a string url.
  // If it's an obj, this is a no-op.
  // this way, you can call url_format() on strings
  // to clean up potentially wonky urls.
  if (util.isString(obj)) obj = urlParse(obj);
  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
  return obj.format();
}

Url.prototype.format = function() {
  var auth = this.auth || '';
  if (auth) {
    auth = encodeURIComponent(auth);
    auth = auth.replace(/%3A/i, ':');
    auth += '@';
  }

  var protocol = this.protocol || '',
      pathname = this.pathname || '',
      hash = this.hash || '',
      host = false,
      query = '';

  if (this.host) {
    host = auth + this.host;
  } else if (this.hostname) {
    host = auth + (this.hostname.indexOf(':') === -1 ?
        this.hostname :
        '[' + this.hostname + ']');
    if (this.port) {
      host += ':' + this.port;
    }
  }

  if (this.query &&
      util.isObject(this.query) &&
      Object.keys(this.query).length) {
    query = querystring.stringify(this.query);
  }

  var search = this.search || (query && ('?' + query)) || '';

  if (protocol && protocol.substr(-1) !== ':') protocol += ':';

  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.
  // unless they had them to begin with.
  if (this.slashes ||
      (!protocol || slashedProtocol[protocol]) && host !== false) {
    host = '//' + (host || '');
    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
  } else if (!host) {
    host = '';
  }

  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
  if (search && search.charAt(0) !== '?') search = '?' + search;

  pathname = pathname.replace(/[?#]/g, function(match) {
    return encodeURIComponent(match);
  });
  search = search.replace('#', '%23');

  return protocol + host + pathname + search + hash;
};

function urlResolve(source, relative) {
  return urlParse(source, false, true).resolve(relative);
}

Url.prototype.resolve = function(relative) {
  return this.resolveObject(urlParse(relative, false, true)).format();
};

function urlResolveObject(source, relative) {
  if (!source) return relative;
  return urlParse(source, false, true).resolveObject(relative);
}

Url.prototype.resolveObject = function(relative) {
  if (util.isString(relative)) {
    var rel = new Url();
    rel.parse(relative, false, true);
    relative = rel;
  }

  var result = new Url();
  var tkeys = Object.keys(this);
  for (var tk = 0; tk < tkeys.length; tk++) {
    var tkey = tkeys[tk];
    result[tkey] = this[tkey];
  }

  // hash is always overridden, no matter what.
  // even href="" will remove it.
  result.hash = relative.hash;

  // if the relative url is empty, then there's nothing left to do here.
  if (relative.href === '') {
    result.href = result.format();
    return result;
  }

  // hrefs like //foo/bar always cut to the protocol.
  if (relative.slashes && !relative.protocol) {
    // take everything except the protocol from relative
    var rkeys = Object.keys(relative);
    for (var rk = 0; rk < rkeys.length; rk++) {
      var rkey = rkeys[rk];
      if (rkey !== 'protocol')
        result[rkey] = relative[rkey];
    }

    //urlParse appends trailing / to urls like http://www.example.com
    if (slashedProtocol[result.protocol] &&
        result.hostname && !result.pathname) {
      result.path = result.pathname = '/';
    }

    result.href = result.format();
    return result;
  }

  if (relative.protocol && relative.protocol !== result.protocol) {
    // if it's a known url protocol, then changing
    // the protocol does weird things
    // first, if it's not file:, then we MUST have a host,
    // and if there was a path
    // to begin with, then we MUST have a path.
    // if it is file:, then the host is dropped,
    // because that's known to be hostless.
    // anything else is assumed to be absolute.
    if (!slashedProtocol[relative.protocol]) {
      var keys = Object.keys(relative);
      for (var v = 0; v < keys.length; v++) {
        var k = keys[v];
        result[k] = relative[k];
      }
      result.href = result.format();
      return result;
    }

    result.protocol = relative.protocol;
    if (!relative.host && !hostlessProtocol[relative.protocol]) {
      var relPath = (relative.pathname || '').split('/');
      while (relPath.length && !(relative.host = relPath.shift()));
      if (!relative.host) relative.host = '';
      if (!relative.hostname) relative.hostname = '';
      if (relPath[0] !== '') relPath.unshift('');
      if (relPath.length < 2) relPath.unshift('');
      result.pathname = relPath.join('/');
    } else {
      result.pathname = relative.pathname;
    }
    result.search = relative.search;
    result.query = relative.query;
    result.host = relative.host || '';
    result.auth = relative.auth;
    result.hostname = relative.hostname || relative.host;
    result.port = relative.port;
    // to support http.request
    if (result.pathname || result.search) {
      var p = result.pathname || '';
      var s = result.search || '';
      result.path = p + s;
    }
    result.slashes = result.slashes || relative.slashes;
    result.href = result.format();
    return result;
  }

  var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
      isRelAbs = (
          relative.host ||
          relative.pathname && relative.pathname.charAt(0) === '/'
      ),
      mustEndAbs = (isRelAbs || isSourceAbs ||
                    (result.host && relative.pathname)),
      removeAllDots = mustEndAbs,
      srcPath = result.pathname && result.pathname.split('/') || [],
      relPath = relative.pathname && relative.pathname.split('/') || [],
      psychotic = result.protocol && !slashedProtocol[result.protocol];

  // if the url is a non-slashed url, then relative
  // links like ../.. should be able
  // to crawl up to the hostname, as well.  This is strange.
  // result.protocol has already been set by now.
  // Later on, put the first path part into the host field.
  if (psychotic) {
    result.hostname = '';
    result.port = null;
    if (result.host) {
      if (srcPath[0] === '') srcPath[0] = result.host;
      else srcPath.unshift(result.host);
    }
    result.host = '';
    if (relative.protocol) {
      relative.hostname = null;
      relative.port = null;
      if (relative.host) {
        if (relPath[0] === '') relPath[0] = relative.host;
        else relPath.unshift(relative.host);
      }
      relative.host = null;
    }
    mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
  }

  if (isRelAbs) {
    // it's absolute.
    result.host = (relative.host || relative.host === '') ?
                  relative.host : result.host;
    result.hostname = (relative.hostname || relative.hostname === '') ?
                      relative.hostname : result.hostname;
    result.search = relative.search;
    result.query = relative.query;
    srcPath = relPath;
    // fall through to the dot-handling below.
  } else if (relPath.length) {
    // it's relative
    // throw away the existing file, and take the new path instead.
    if (!srcPath) srcPath = [];
    srcPath.pop();
    srcPath = srcPath.concat(relPath);
    result.search = relative.search;
    result.query = relative.query;
  } else if (!util.isNullOrUndefined(relative.search)) {
    // just pull out the search.
    // like href='?foo'.
    // Put this after the other two cases because it simplifies the booleans
    if (psychotic) {
      result.hostname = result.host = srcPath.shift();
      //occationaly the auth can get stuck only in host
      //this especially happens in cases like
      //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
      var authInHost = result.host && result.host.indexOf('@') > 0 ?
                       result.host.split('@') : false;
      if (authInHost) {
        result.auth = authInHost.shift();
        result.host = result.hostname = authInHost.shift();
      }
    }
    result.search = relative.search;
    result.query = relative.query;
    //to support http.request
    if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
      result.path = (result.pathname ? result.pathname : '') +
                    (result.search ? result.search : '');
    }
    result.href = result.format();
    return result;
  }

  if (!srcPath.length) {
    // no path at all.  easy.
    // we've already handled the other stuff above.
    result.pathname = null;
    //to support http.request
    if (result.search) {
      result.path = '/' + result.search;
    } else {
      result.path = null;
    }
    result.href = result.format();
    return result;
  }

  // if a url ENDs in . or .., then it must get a trailing slash.
  // however, if it ends in anything else non-slashy,
  // then it must NOT get a trailing slash.
  var last = srcPath.slice(-1)[0];
  var hasTrailingSlash = (
      (result.host || relative.host || srcPath.length > 1) &&
      (last === '.' || last === '..') || last === '');

  // strip single dots, resolve double dots to parent dir
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = srcPath.length; i >= 0; i--) {
    last = srcPath[i];
    if (last === '.') {
      srcPath.splice(i, 1);
    } else if (last === '..') {
      srcPath.splice(i, 1);
      up++;
    } else if (up) {
      srcPath.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (!mustEndAbs && !removeAllDots) {
    for (; up--; up) {
      srcPath.unshift('..');
    }
  }

  if (mustEndAbs && srcPath[0] !== '' &&
      (!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
    srcPath.unshift('');
  }

  if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
    srcPath.push('');
  }

  var isAbsolute = srcPath[0] === '' ||
      (srcPath[0] && srcPath[0].charAt(0) === '/');

  // put the host back
  if (psychotic) {
    result.hostname = result.host = isAbsolute ? '' :
                                    srcPath.length ? srcPath.shift() : '';
    //occationaly the auth can get stuck only in host
    //this especially happens in cases like
    //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
    var authInHost = result.host && result.host.indexOf('@') > 0 ?
                     result.host.split('@') : false;
    if (authInHost) {
      result.auth = authInHost.shift();
      result.host = result.hostname = authInHost.shift();
    }
  }

  mustEndAbs = mustEndAbs || (result.host && srcPath.length);

  if (mustEndAbs && !isAbsolute) {
    srcPath.unshift('');
  }

  if (!srcPath.length) {
    result.pathname = null;
    result.path = null;
  } else {
    result.pathname = srcPath.join('/');
  }

  //to support request.http
  if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
    result.path = (result.pathname ? result.pathname : '') +
                  (result.search ? result.search : '');
  }
  result.auth = relative.auth || result.auth;
  result.slashes = result.slashes || relative.slashes;
  result.href = result.format();
  return result;
};

Url.prototype.parseHost = function() {
  var host = this.host;
  var port = portPattern.exec(host);
  if (port) {
    port = port[0];
    if (port !== ':') {
      this.port = port.substr(1);
    }
    host = host.substr(0, host.length - port.length);
  }
  if (host) this.hostname = host;
};

},{"./util":408,"punycode":382,"querystring":385}],408:[function(require,module,exports){
'use strict';

module.exports = {
  isString: function(arg) {
    return typeof(arg) === 'string';
  },
  isObject: function(arg) {
    return typeof(arg) === 'object' && arg !== null;
  },
  isNull: function(arg) {
    return arg === null;
  },
  isNullOrUndefined: function(arg) {
    return arg == null;
  }
};

},{}],409:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],410:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":409,"_process":381,"inherits":377}],411:[function(require,module,exports){
var indexOf = require('indexof');

var Object_keys = function (obj) {
    if (Object.keys) return Object.keys(obj)
    else {
        var res = [];
        for (var key in obj) res.push(key)
        return res;
    }
};

var forEach = function (xs, fn) {
    if (xs.forEach) return xs.forEach(fn)
    else for (var i = 0; i < xs.length; i++) {
        fn(xs[i], i, xs);
    }
};

var defineProp = (function() {
    try {
        Object.defineProperty({}, '_', {});
        return function(obj, name, value) {
            Object.defineProperty(obj, name, {
                writable: true,
                enumerable: false,
                configurable: true,
                value: value
            })
        };
    } catch(e) {
        return function(obj, name, value) {
            obj[name] = value;
        };
    }
}());

var globals = ['Array', 'Boolean', 'Date', 'Error', 'EvalError', 'Function',
'Infinity', 'JSON', 'Math', 'NaN', 'Number', 'Object', 'RangeError',
'ReferenceError', 'RegExp', 'String', 'SyntaxError', 'TypeError', 'URIError',
'decodeURI', 'decodeURIComponent', 'encodeURI', 'encodeURIComponent', 'escape',
'eval', 'isFinite', 'isNaN', 'parseFloat', 'parseInt', 'undefined', 'unescape'];

function Context() {}
Context.prototype = {};

var Script = exports.Script = function NodeScript (code) {
    if (!(this instanceof Script)) return new Script(code);
    this.code = code;
};

Script.prototype.runInContext = function (context) {
    if (!(context instanceof Context)) {
        throw new TypeError("needs a 'context' argument.");
    }
    
    var iframe = document.createElement('iframe');
    if (!iframe.style) iframe.style = {};
    iframe.style.display = 'none';
    
    document.body.appendChild(iframe);
    
    var win = iframe.contentWindow;
    var wEval = win.eval, wExecScript = win.execScript;

    if (!wEval && wExecScript) {
        // win.eval() magically appears when this is called in IE:
        wExecScript.call(win, 'null');
        wEval = win.eval;
    }
    
    forEach(Object_keys(context), function (key) {
        win[key] = context[key];
    });
    forEach(globals, function (key) {
        if (context[key]) {
            win[key] = context[key];
        }
    });
    
    var winKeys = Object_keys(win);

    var res = wEval.call(win, this.code);
    
    forEach(Object_keys(win), function (key) {
        // Avoid copying circular objects like `top` and `window` by only
        // updating existing context properties or new properties in the `win`
        // that was only introduced after the eval.
        if (key in context || indexOf(winKeys, key) === -1) {
            context[key] = win[key];
        }
    });

    forEach(globals, function (key) {
        if (!(key in context)) {
            defineProp(context, key, win[key]);
        }
    });
    
    document.body.removeChild(iframe);
    
    return res;
};

Script.prototype.runInThisContext = function () {
    return eval(this.code); // maybe...
};

Script.prototype.runInNewContext = function (context) {
    var ctx = Script.createContext(context);
    var res = this.runInContext(ctx);

    forEach(Object_keys(ctx), function (key) {
        context[key] = ctx[key];
    });

    return res;
};

forEach(Object_keys(Script.prototype), function (name) {
    exports[name] = Script[name] = function (code) {
        var s = Script(code);
        return s[name].apply(s, [].slice.call(arguments, 1));
    };
});

exports.createScript = function (code) {
    return exports.Script(code);
};

exports.createContext = Script.createContext = function (context) {
    var copy = new Context();
    if(typeof context === 'object') {
        forEach(Object_keys(context), function (key) {
            copy[key] = context[key];
        });
    }
    return copy;
};

},{"indexof":412}],412:[function(require,module,exports){

var indexOf = [].indexOf;

module.exports = function(arr, obj){
  if (indexOf) return arr.indexOf(obj);
  for (var i = 0; i < arr.length; ++i) {
    if (arr[i] === obj) return i;
  }
  return -1;
};
},{}],413:[function(require,module,exports){
module.exports = extend

var hasOwnProperty = Object.prototype.hasOwnProperty;

function extend() {
    var target = {}

    for (var i = 0; i < arguments.length; i++) {
        var source = arguments[i]

        for (var key in source) {
            if (hasOwnProperty.call(source, key)) {
                target[key] = source[key]
            }
        }
    }

    return target
}

},{}]},{},[147])(147)
});