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Move base58.h implementation code to base58.cpp

0.10
Pieter Wuille 11 years ago
parent
605d5b5558
commit
f6b7c644c9
3 changed files with 219 additions and 227 deletions
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  1. 183
      src/base58.cpp
  2. 259
      src/base58.h
  3. 4
      src/test/base58_tests.cpp

183
src/base58.cpp
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@ -2,11 +2,18 @@
// Distributed under the MIT/X11 software license, see the accompanying // Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php. // file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "base58.h"
#include "hash.h"
#include "uint256.h"
#include <assert.h> #include <assert.h>
#include <stdint.h> #include <stdint.h>
#include <string.h> #include <string.h>
#include <vector> #include <vector>
#include <string> #include <string>
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
/* All alphanumeric characters except for "0", "I", "O", and "l" */ /* All alphanumeric characters except for "0", "I", "O", and "l" */
static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"; static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
@ -89,3 +96,179 @@ std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend)
str += pszBase58[*(it++)]; str += pszBase58[*(it++)];
return str; return str;
} }
std::string EncodeBase58(const std::vector<unsigned char>& vch) {
return EncodeBase58(&vch[0], &vch[0] + vch.size());
}
bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet) {
return DecodeBase58(str.c_str(), vchRet);
}
std::string EncodeBase58Check(const std::vector<unsigned char>& vchIn) {
// add 4-byte hash check to the end
std::vector<unsigned char> vch(vchIn);
uint256 hash = Hash(vch.begin(), vch.end());
vch.insert(vch.end(), (unsigned char*)&hash, (unsigned char*)&hash + 4);
return EncodeBase58(vch);
}
bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRet) {
if (!DecodeBase58(psz, vchRet))
return false;
if (vchRet.size() < 4)
{
vchRet.clear();
return false;
}
// re-calculate the checksum, insure it matches the included 4-byte checksum
uint256 hash = Hash(vchRet.begin(), vchRet.end()-4);
if (memcmp(&hash, &vchRet.end()[-4], 4) != 0)
{
vchRet.clear();
return false;
}
vchRet.resize(vchRet.size()-4);
return true;
}
bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet) {
return DecodeBase58Check(str.c_str(), vchRet);
}
CBase58Data::CBase58Data() {
vchVersion.clear();
vchData.clear();
}
void CBase58Data::SetData(const std::vector<unsigned char> &vchVersionIn, const void* pdata, size_t nSize) {
vchVersion = vchVersionIn;
vchData.resize(nSize);
if (!vchData.empty())
memcpy(&vchData[0], pdata, nSize);
}
void CBase58Data::SetData(const std::vector<unsigned char> &vchVersionIn, const unsigned char *pbegin, const unsigned char *pend) {
SetData(vchVersionIn, (void*)pbegin, pend - pbegin);
}
bool CBase58Data::SetString(const char* psz, unsigned int nVersionBytes) {
std::vector<unsigned char> vchTemp;
DecodeBase58Check(psz, vchTemp);
if (vchTemp.size() < nVersionBytes) {
vchData.clear();
vchVersion.clear();
return false;
}
vchVersion.assign(vchTemp.begin(), vchTemp.begin() + nVersionBytes);
vchData.resize(vchTemp.size() - nVersionBytes);
if (!vchData.empty())
memcpy(&vchData[0], &vchTemp[nVersionBytes], vchData.size());
OPENSSL_cleanse(&vchTemp[0], vchData.size());
return true;
}
bool CBase58Data::SetString(const std::string& str) {
return SetString(str.c_str());
}
std::string CBase58Data::ToString() const {
std::vector<unsigned char> vch = vchVersion;
vch.insert(vch.end(), vchData.begin(), vchData.end());
return EncodeBase58Check(vch);
}
int CBase58Data::CompareTo(const CBase58Data& b58) const {
if (vchVersion < b58.vchVersion) return -1;
if (vchVersion > b58.vchVersion) return 1;
if (vchData < b58.vchData) return -1;
if (vchData > b58.vchData) return 1;
return 0;
}
namespace {
class CBitcoinAddressVisitor : public boost::static_visitor<bool> {
private:
CBitcoinAddress *addr;
public:
CBitcoinAddressVisitor(CBitcoinAddress *addrIn) : addr(addrIn) { }
bool operator()(const CKeyID &id) const { return addr->Set(id); }
bool operator()(const CScriptID &id) const { return addr->Set(id); }
bool operator()(const CNoDestination &no) const { return false; }
};
};
bool CBitcoinAddress::Set(const CKeyID &id) {
SetData(Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS), &id, 20);
return true;
}
bool CBitcoinAddress::Set(const CScriptID &id) {
SetData(Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS), &id, 20);
return true;
}
bool CBitcoinAddress::Set(const CTxDestination &dest) {
return boost::apply_visitor(CBitcoinAddressVisitor(this), dest);
}
bool CBitcoinAddress::IsValid() const {
bool fCorrectSize = vchData.size() == 20;
bool fKnownVersion = vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS) ||
vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
return fCorrectSize && fKnownVersion;
}
CTxDestination CBitcoinAddress::Get() const {
if (!IsValid())
return CNoDestination();
uint160 id;
memcpy(&id, &vchData[0], 20);
if (vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
return CKeyID(id);
else if (vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS))
return CScriptID(id);
else
return CNoDestination();
}
bool CBitcoinAddress::GetKeyID(CKeyID &keyID) const {
if (!IsValid() || vchVersion != Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
return false;
uint160 id;
memcpy(&id, &vchData[0], 20);
keyID = CKeyID(id);
return true;
}
bool CBitcoinAddress::IsScript() const {
return IsValid() && vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
}
void CBitcoinSecret::SetKey(const CKey& vchSecret) {
assert(vchSecret.IsValid());
SetData(Params().Base58Prefix(CChainParams::SECRET_KEY), vchSecret.begin(), vchSecret.size());
if (vchSecret.IsCompressed())
vchData.push_back(1);
}
CKey CBitcoinSecret::GetKey() {
CKey ret;
ret.Set(&vchData[0], &vchData[32], vchData.size() > 32 && vchData[32] == 1);
return ret;
}
bool CBitcoinSecret::IsValid() const {
bool fExpectedFormat = vchData.size() == 32 || (vchData.size() == 33 && vchData[32] == 1);
bool fCorrectVersion = vchVersion == Params().Base58Prefix(CChainParams::SECRET_KEY);
return fExpectedFormat && fCorrectVersion;
}
bool CBitcoinSecret::SetString(const char* pszSecret) {
return CBase58Data::SetString(pszSecret) && IsValid();
}
bool CBitcoinSecret::SetString(const std::string& strSecret) {
return SetString(strSecret.c_str());
}

259
src/base58.h
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@ -15,17 +15,12 @@
#define BITCOIN_BASE58_H #define BITCOIN_BASE58_H
#include "chainparams.h" #include "chainparams.h"
#include "hash.h"
#include "key.h" #include "key.h"
#include "script.h" #include "script.h"
#include "uint256.h"
#include <string> #include <string>
#include <vector> #include <vector>
#include <boost/variant/apply_visitor.hpp>
#include <boost/variant/static_visitor.hpp>
/** /**
* Encode a byte sequence as a base58-encoded string. * Encode a byte sequence as a base58-encoded string.
* pbegin and pend cannot be NULL, unless both are. * pbegin and pend cannot be NULL, unless both are.
@ -35,10 +30,7 @@ std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend)
/** /**
* Encode a byte vector as a base58-encoded string * Encode a byte vector as a base58-encoded string
*/ */
inline std::string EncodeBase58(const std::vector<unsigned char>& vch) std::string EncodeBase58(const std::vector<unsigned char>& vch);
{
return EncodeBase58(&vch[0], &vch[0] + vch.size());
}
/** /**
* Decode a base58-encoded string (psz) into a byte vector (vchRet). * Decode a base58-encoded string (psz) into a byte vector (vchRet).
@ -51,55 +43,24 @@ bool DecodeBase58(const char* psz, std::vector<unsigned char>& vchRet);
* Decode a base58-encoded string (str) into a byte vector (vchRet). * Decode a base58-encoded string (str) into a byte vector (vchRet).
* return true if decoding is successful. * return true if decoding is successful.
*/ */
inline bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet) bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet);
{
return DecodeBase58(str.c_str(), vchRet);
}
/** /**
* Encode a byte vector into a base58-encoded string, including checksum * Encode a byte vector into a base58-encoded string, including checksum
*/ */
inline std::string EncodeBase58Check(const std::vector<unsigned char>& vchIn) std::string EncodeBase58Check(const std::vector<unsigned char>& vchIn);
{
// add 4-byte hash check to the end
std::vector<unsigned char> vch(vchIn);
uint256 hash = Hash(vch.begin(), vch.end());
vch.insert(vch.end(), (unsigned char*)&hash, (unsigned char*)&hash + 4);
return EncodeBase58(vch);
}
/** /**
* Decode a base58-encoded string (psz) that includes a checksum into a byte * Decode a base58-encoded string (psz) that includes a checksum into a byte
* vector (vchRet), return true if decoding is successful * vector (vchRet), return true if decoding is successful
*/ */
inline bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRet) inline bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRet);
{
if (!DecodeBase58(psz, vchRet))
return false;
if (vchRet.size() < 4)
{
vchRet.clear();
return false;
}
// re-calculate the checksum, insure it matches the included 4-byte checksum
uint256 hash = Hash(vchRet.begin(), vchRet.end()-4);
if (memcmp(&hash, &vchRet.end()[-4], 4) != 0)
{
vchRet.clear();
return false;
}
vchRet.resize(vchRet.size()-4);
return true;
}
/** /**
* Decode a base58-encoded string (str) that includes a checksum into a byte * Decode a base58-encoded string (str) that includes a checksum into a byte
* vector (vchRet), return true if decoding is successful * vector (vchRet), return true if decoding is successful
*/ */
inline bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet) inline bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet);
{
return DecodeBase58Check(str.c_str(), vchRet);
}
/** /**
* Base class for all base58-encoded data * Base class for all base58-encoded data
@ -114,64 +75,15 @@ protected:
typedef std::vector<unsigned char, zero_after_free_allocator<unsigned char> > vector_uchar; typedef std::vector<unsigned char, zero_after_free_allocator<unsigned char> > vector_uchar;
vector_uchar vchData; vector_uchar vchData;
CBase58Data() CBase58Data();
{ void SetData(const std::vector<unsigned char> &vchVersionIn, const void* pdata, size_t nSize);
vchVersion.clear(); void SetData(const std::vector<unsigned char> &vchVersionIn, const unsigned char *pbegin, const unsigned char *pend);
vchData.clear();
}
void SetData(const std::vector<unsigned char> &vchVersionIn, const void* pdata, size_t nSize)
{
vchVersion = vchVersionIn;
vchData.resize(nSize);
if (!vchData.empty())
memcpy(&vchData[0], pdata, nSize);
}
void SetData(const std::vector<unsigned char> &vchVersionIn, const unsigned char *pbegin, const unsigned char *pend)
{
SetData(vchVersionIn, (void*)pbegin, pend - pbegin);
}
public: public:
bool SetString(const char* psz, unsigned int nVersionBytes = 1) bool SetString(const char* psz, unsigned int nVersionBytes = 1);
{ bool SetString(const std::string& str);
std::vector<unsigned char> vchTemp; std::string ToString() const;
DecodeBase58Check(psz, vchTemp); int CompareTo(const CBase58Data& b58) const;
if (vchTemp.size() < nVersionBytes)
{
vchData.clear();
vchVersion.clear();
return false;
}
vchVersion.assign(vchTemp.begin(), vchTemp.begin() + nVersionBytes);
vchData.resize(vchTemp.size() - nVersionBytes);
if (!vchData.empty())
memcpy(&vchData[0], &vchTemp[nVersionBytes], vchData.size());
OPENSSL_cleanse(&vchTemp[0], vchData.size());
return true;
}
bool SetString(const std::string& str)
{
return SetString(str.c_str());
}
std::string ToString() const
{
std::vector<unsigned char> vch = vchVersion;
vch.insert(vch.end(), vchData.begin(), vchData.end());
return EncodeBase58Check(vch);
}
int CompareTo(const CBase58Data& b58) const
{
if (vchVersion < b58.vchVersion) return -1;
if (vchVersion > b58.vchVersion) return 1;
if (vchData < b58.vchData) return -1;
if (vchData > b58.vchData) return 1;
return 0;
}
bool operator==(const CBase58Data& b58) const { return CompareTo(b58) == 0; } bool operator==(const CBase58Data& b58) const { return CompareTo(b58) == 0; }
bool operator<=(const CBase58Data& b58) const { return CompareTo(b58) <= 0; } bool operator<=(const CBase58Data& b58) const { return CompareTo(b58) <= 0; }
@ -186,140 +98,37 @@ public:
* Script-hash-addresses have version 5 (or 196 testnet). * Script-hash-addresses have version 5 (or 196 testnet).
* The data vector contains RIPEMD160(SHA256(cscript)), where cscript is the serialized redemption script. * The data vector contains RIPEMD160(SHA256(cscript)), where cscript is the serialized redemption script.
*/ */
class CBitcoinAddress; class CBitcoinAddress : public CBase58Data {
class CBitcoinAddressVisitor : public boost::static_visitor<bool>
{
private:
CBitcoinAddress *addr;
public: public:
CBitcoinAddressVisitor(CBitcoinAddress *addrIn) : addr(addrIn) { } bool Set(const CKeyID &id);
bool operator()(const CKeyID &id) const; bool Set(const CScriptID &id);
bool operator()(const CScriptID &id) const; bool Set(const CTxDestination &dest);
bool operator()(const CNoDestination &no) const; bool IsValid() const;
};
CBitcoinAddress() {}
class CBitcoinAddress : public CBase58Data CBitcoinAddress(const CTxDestination &dest) { Set(dest); }
{ CBitcoinAddress(const std::string& strAddress) { SetString(strAddress); }
public: CBitcoinAddress(const char* pszAddress) { SetString(pszAddress); }
bool Set(const CKeyID &id) {
SetData(Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS), &id, 20); CTxDestination Get() const;
return true; bool GetKeyID(CKeyID &keyID) const;
} bool IsScript() const;
bool Set(const CScriptID &id) {
SetData(Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS), &id, 20);
return true;
}
bool Set(const CTxDestination &dest)
{
return boost::apply_visitor(CBitcoinAddressVisitor(this), dest);
}
bool IsValid() const
{
bool fCorrectSize = vchData.size() == 20;
bool fKnownVersion = vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS) ||
vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
return fCorrectSize && fKnownVersion;
}
CBitcoinAddress()
{
}
CBitcoinAddress(const CTxDestination &dest)
{
Set(dest);
}
CBitcoinAddress(const std::string& strAddress)
{
SetString(strAddress);
}
CBitcoinAddress(const char* pszAddress)
{
SetString(pszAddress);
}
CTxDestination Get() const {
if (!IsValid())
return CNoDestination();
uint160 id;
memcpy(&id, &vchData[0], 20);
if (vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
return CKeyID(id);
else if (vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS))
return CScriptID(id);
else
return CNoDestination();
}
bool GetKeyID(CKeyID &keyID) const {
if (!IsValid() || vchVersion != Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
return false;
uint160 id;
memcpy(&id, &vchData[0], 20);
keyID = CKeyID(id);
return true;
}
bool IsScript() const {
return IsValid() && vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
}
}; };
bool inline CBitcoinAddressVisitor::operator()(const CKeyID &id) const { return addr->Set(id); }
bool inline CBitcoinAddressVisitor::operator()(const CScriptID &id) const { return addr->Set(id); }
bool inline CBitcoinAddressVisitor::operator()(const CNoDestination &id) const { return false; }
/** /**
* A base58-encoded secret key * A base58-encoded secret key
*/ */
class CBitcoinSecret : public CBase58Data class CBitcoinSecret : public CBase58Data
{ {
public: public:
void SetKey(const CKey& vchSecret) void SetKey(const CKey& vchSecret);
{ CKey GetKey();
assert(vchSecret.IsValid()); bool IsValid() const;
SetData(Params().Base58Prefix(CChainParams::SECRET_KEY), vchSecret.begin(), vchSecret.size()); bool SetString(const char* pszSecret);
if (vchSecret.IsCompressed()) bool SetString(const std::string& strSecret);
vchData.push_back(1);
} CBitcoinSecret(const CKey& vchSecret) { SetKey(vchSecret); }
CBitcoinSecret() {}
CKey GetKey()
{
CKey ret;
ret.Set(&vchData[0], &vchData[32], vchData.size() > 32 && vchData[32] == 1);
return ret;
}
bool IsValid() const
{
bool fExpectedFormat = vchData.size() == 32 || (vchData.size() == 33 && vchData[32] == 1);
bool fCorrectVersion = vchVersion == Params().Base58Prefix(CChainParams::SECRET_KEY);
return fExpectedFormat && fCorrectVersion;
}
bool SetString(const char* pszSecret)
{
return CBase58Data::SetString(pszSecret) && IsValid();
}
bool SetString(const std::string& strSecret)
{
return SetString(strSecret.c_str());
}
CBitcoinSecret(const CKey& vchSecret)
{
SetKey(vchSecret);
}
CBitcoinSecret()
{
}
}; };
template<typename K, int Size, CChainParams::Base58Type Type> class CBitcoinExtKeyBase : public CBase58Data template<typename K, int Size, CChainParams::Base58Type Type> class CBitcoinExtKeyBase : public CBase58Data

4
src/test/base58_tests.cpp
Unescape View File

@ -233,7 +233,7 @@ BOOST_AUTO_TEST_CASE(base58_keys_valid_gen)
continue; continue;
} }
CBitcoinAddress addrOut; CBitcoinAddress addrOut;
BOOST_CHECK_MESSAGE(boost::apply_visitor(CBitcoinAddressVisitor(&addrOut), dest), "encode dest: " + strTest); BOOST_CHECK_MESSAGE(addrOut.Set(dest), "encode dest: " + strTest);
BOOST_CHECK_MESSAGE(addrOut.ToString() == exp_base58string, "mismatch: " + strTest); BOOST_CHECK_MESSAGE(addrOut.ToString() == exp_base58string, "mismatch: " + strTest);
} }
} }
@ -241,7 +241,7 @@ BOOST_AUTO_TEST_CASE(base58_keys_valid_gen)
// Visiting a CNoDestination must fail // Visiting a CNoDestination must fail
CBitcoinAddress dummyAddr; CBitcoinAddress dummyAddr;
CTxDestination nodest = CNoDestination(); CTxDestination nodest = CNoDestination();
BOOST_CHECK(!boost::apply_visitor(CBitcoinAddressVisitor(&dummyAddr), nodest)); BOOST_CHECK(!dummyAddr.Set(nodest));
SelectParams(CChainParams::MAIN); SelectParams(CChainParams::MAIN);
} }

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