OpenCL GPU miner
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/*-
* Copyright 2009 Colin Percival, 2014 savale
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 AUTHOR 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 AUTHOR 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.
*
* This file was originally written by Colin Percival as part of the Tarsnap
* online backup system.
*/
#include "config.h"
#include "miner.h"
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
// Cyclic right rotation.
#ifndef ROTR64
#define ROTR64(x, y) (((x) >> (y)) ^ ((x) << (64 - (y))))
#endif
// Little-endian byte access.
#define B2B_GET64(p) \
(((uint64_t) ((uint8_t *) (p))[0]) ^ \
(((uint64_t) ((uint8_t *) (p))[1]) << 8) ^ \
(((uint64_t) ((uint8_t *) (p))[2]) << 16) ^ \
(((uint64_t) ((uint8_t *) (p))[3]) << 24) ^ \
(((uint64_t) ((uint8_t *) (p))[4]) << 32) ^ \
(((uint64_t) ((uint8_t *) (p))[5]) << 40) ^ \
(((uint64_t) ((uint8_t *) (p))[6]) << 48) ^ \
(((uint64_t) ((uint8_t *) (p))[7]) << 56))
// G Mixing function.
#define B2B_G(a, b, c, d, x, y) { \
v[a] = v[a] + v[b] + x; \
v[d] = ROTR64(v[d] ^ v[a], 32); \
v[c] = v[c] + v[d]; \
v[b] = ROTR64(v[b] ^ v[c], 24); \
v[a] = v[a] + v[b] + y; \
v[d] = ROTR64(v[d] ^ v[a], 16); \
v[c] = v[c] + v[d]; \
v[b] = ROTR64(v[b] ^ v[c], 63); }
// Initialization Vector.
static const uint64_t blake2b_iv[8] = {
0x6A09E667F3BCC908, 0xBB67AE8584CAA73B,
0x3C6EF372FE94F82B, 0xA54FF53A5F1D36F1,
0x510E527FADE682D1, 0x9B05688C2B3E6C1F,
0x1F83D9ABFB41BD6B, 0x5BE0CD19137E2179
};
// state context
typedef struct {
uint8_t b[128]; // input buffer
uint64_t h[8]; // chained state
uint64_t t[2]; // total number of bytes
size_t c; // pointer for b[]
size_t outlen; // digest size
} blake2b_ctx;
void blake2b_update(blake2b_ctx *ctx, // context
const void *in, size_t inlen); // data to be hashed
// Compression function. "last" flag indicates last block.
static void blake2b_compress(blake2b_ctx *ctx, int last)
{
const uint8_t sigma[12][16] = {
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
{ 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
{ 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
{ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 },
{ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 },
{ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 },
{ 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 },
{ 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 },
{ 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 },
{ 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0 },
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
{ 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
};
int i;
uint64_t v[16], m[16];
for (i = 0; i < 8; i++) { // init work variables
v[i] = ctx->h[i];
v[i + 8] = blake2b_iv[i];
}
v[12] ^= ctx->t[0]; // low 64 bits of offset
v[13] ^= ctx->t[1]; // high 64 bits
if (last) // last block flag set ?
v[14] = ~v[14];
for (i = 0; i < 16; i++) // get little-endian words
m[i] = B2B_GET64(&ctx->b[8 * i]);
for (i = 0; i < 12; i++) { // twelve rounds
B2B_G( 0, 4, 8, 12, m[sigma[i][ 0]], m[sigma[i][ 1]]);
B2B_G( 1, 5, 9, 13, m[sigma[i][ 2]], m[sigma[i][ 3]]);
B2B_G( 2, 6, 10, 14, m[sigma[i][ 4]], m[sigma[i][ 5]]);
B2B_G( 3, 7, 11, 15, m[sigma[i][ 6]], m[sigma[i][ 7]]);
B2B_G( 0, 5, 10, 15, m[sigma[i][ 8]], m[sigma[i][ 9]]);
B2B_G( 1, 6, 11, 12, m[sigma[i][10]], m[sigma[i][11]]);
B2B_G( 2, 7, 8, 13, m[sigma[i][12]], m[sigma[i][13]]);
B2B_G( 3, 4, 9, 14, m[sigma[i][14]], m[sigma[i][15]]);
}
for( i = 0; i < 8; ++i )
ctx->h[i] ^= v[i] ^ v[i + 8];
}
// Initialize the hashing context "ctx" with optional key "key".
// 1 <= outlen <= 64 gives the digest size in bytes.
// Secret key (also <= 64 bytes) is optional (keylen = 0).
int blake2b_init(blake2b_ctx *ctx, size_t outlen,
const void *key, size_t keylen) // (keylen=0: no key)
{
size_t i;
if (outlen == 0 || outlen > 64 || keylen > 64)
return -1; // illegal parameters
for (i = 0; i < 8; i++) // state, "param block"
ctx->h[i] = blake2b_iv[i];
ctx->h[0] ^= 0x01010000 ^ (keylen << 8) ^ outlen;
ctx->t[0] = 0; // input count low word
ctx->t[1] = 0; // input count high word
ctx->c = 0; // pointer within buffer
ctx->outlen = outlen;
for (i = keylen; i < 128; i++) // zero input block
ctx->b[i] = 0;
if (keylen > 0) {
blake2b_update(ctx, key, keylen);
ctx->c = 128; // at the end
}
return 0;
}
// Add "inlen" bytes from "in" into the hash.
void blake2b_update(blake2b_ctx *ctx,
const void *in, size_t inlen) // data bytes
{
size_t i;
for (i = 0; i < inlen; i++) {
if (ctx->c == 128) { // buffer full ?
ctx->t[0] += ctx->c; // add counters
if (ctx->t[0] < ctx->c) // carry overflow ?
ctx->t[1]++; // high word
blake2b_compress(ctx, 0); // compress (not last)
ctx->c = 0; // counter to zero
}
ctx->b[ctx->c++] = ((const uint8_t *) in)[i];
}
}
// Generate the message digest (size given in init).
// Result placed in "out".
void blake2b_final(blake2b_ctx *ctx, void *out)
{
size_t i;
ctx->t[0] += ctx->c; // mark last block offset
if (ctx->t[0] < ctx->c) // carry overflow
ctx->t[1]++; // high word
while (ctx->c < 128) // fill up with zeros
ctx->b[ctx->c++] = 0;
blake2b_compress(ctx, 1); // final block flag = 1
// little endian convert and store
for (i = 0; i < ctx->outlen; i++) {
((uint8_t *) out)[i] =
(ctx->h[i >> 3] >> (8 * (i & 7))) & 0xFF;
}
}
#ifdef __APPLE_CC__
static
#endif
void siaHash(void *state, const void *input)
{
blake2b_ctx ctx;
blake2b_init(&ctx, 32, NULL, 0);
blake2b_update(&ctx, input, 80);
blake2b_final(&ctx, state);
}
void sia_regenhash(struct work *work)
{
uint32_t data[20];
uint32_t hash[16];
char *scratchbuf;
uint32_t *nonce = (uint32_t *)(work->data + 32);
uint32_t *ohash = (uint32_t *)(work->hash);
be32enc_vect(data, (const uint32_t *)work->data, 20);
data[8] = htobe32(*nonce);
siaHash(hash, data);
swab256(ohash, hash);
}