mirror of
https://github.com/bitcoin/bitcoin.git
synced 2026-02-11 09:42:17 +01:00
Move base58.h implementation code to base58.cpp
Rebased-By: Wladimir J. van der Laan <laanwj@gmail.com>
Rebased-From: f6b7c64
This commit is contained in:
Pieter Wuille
committed by
Wladimir J. van der Laan
Wladimir J. van der Laan
parent
72ae546dd4
commit
010e66188e
183
src/base58.cpp
183
src/base58.cpp
@@ -2,11 +2,18 @@
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "base58.h"
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#include "hash.h"
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#include "uint256.h"
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#include <assert.h>
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#include <stdint.h>
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#include <string.h>
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#include <vector>
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#include <string>
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#include <boost/variant/apply_visitor.hpp>
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#include <boost/variant/static_visitor.hpp>
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/* All alphanumeric characters except for "0", "I", "O", and "l" */
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static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
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@@ -89,3 +96,179 @@ std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend)
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str += pszBase58[*(it++)];
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return str;
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}
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std::string EncodeBase58(const std::vector<unsigned char>& vch) {
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return EncodeBase58(&vch[0], &vch[0] + vch.size());
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}
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bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet) {
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return DecodeBase58(str.c_str(), vchRet);
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}
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std::string EncodeBase58Check(const std::vector<unsigned char>& vchIn) {
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// add 4-byte hash check to the end
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std::vector<unsigned char> vch(vchIn);
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uint256 hash = Hash(vch.begin(), vch.end());
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vch.insert(vch.end(), (unsigned char*)&hash, (unsigned char*)&hash + 4);
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return EncodeBase58(vch);
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}
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bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRet) {
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if (!DecodeBase58(psz, vchRet))
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return false;
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if (vchRet.size() < 4)
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{
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vchRet.clear();
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return false;
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}
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// re-calculate the checksum, insure it matches the included 4-byte checksum
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uint256 hash = Hash(vchRet.begin(), vchRet.end()-4);
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if (memcmp(&hash, &vchRet.end()[-4], 4) != 0)
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{
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vchRet.clear();
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return false;
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}
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vchRet.resize(vchRet.size()-4);
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return true;
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}
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bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet) {
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return DecodeBase58Check(str.c_str(), vchRet);
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}
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CBase58Data::CBase58Data() {
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vchVersion.clear();
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vchData.clear();
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}
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void CBase58Data::SetData(const std::vector<unsigned char> &vchVersionIn, const void* pdata, size_t nSize) {
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vchVersion = vchVersionIn;
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vchData.resize(nSize);
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if (!vchData.empty())
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memcpy(&vchData[0], pdata, nSize);
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}
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void CBase58Data::SetData(const std::vector<unsigned char> &vchVersionIn, const unsigned char *pbegin, const unsigned char *pend) {
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SetData(vchVersionIn, (void*)pbegin, pend - pbegin);
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}
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bool CBase58Data::SetString(const char* psz, unsigned int nVersionBytes) {
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std::vector<unsigned char> vchTemp;
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DecodeBase58Check(psz, vchTemp);
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if (vchTemp.size() < nVersionBytes) {
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vchData.clear();
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vchVersion.clear();
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return false;
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}
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vchVersion.assign(vchTemp.begin(), vchTemp.begin() + nVersionBytes);
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vchData.resize(vchTemp.size() - nVersionBytes);
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if (!vchData.empty())
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memcpy(&vchData[0], &vchTemp[nVersionBytes], vchData.size());
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OPENSSL_cleanse(&vchTemp[0], vchData.size());
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return true;
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}
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bool CBase58Data::SetString(const std::string& str) {
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return SetString(str.c_str());
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}
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std::string CBase58Data::ToString() const {
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std::vector<unsigned char> vch = vchVersion;
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vch.insert(vch.end(), vchData.begin(), vchData.end());
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return EncodeBase58Check(vch);
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}
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int CBase58Data::CompareTo(const CBase58Data& b58) const {
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if (vchVersion < b58.vchVersion) return -1;
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if (vchVersion > b58.vchVersion) return 1;
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if (vchData < b58.vchData) return -1;
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if (vchData > b58.vchData) return 1;
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return 0;
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}
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namespace {
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class CBitcoinAddressVisitor : public boost::static_visitor<bool> {
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private:
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CBitcoinAddress *addr;
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public:
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CBitcoinAddressVisitor(CBitcoinAddress *addrIn) : addr(addrIn) { }
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bool operator()(const CKeyID &id) const { return addr->Set(id); }
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bool operator()(const CScriptID &id) const { return addr->Set(id); }
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bool operator()(const CNoDestination &no) const { return false; }
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};
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};
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bool CBitcoinAddress::Set(const CKeyID &id) {
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SetData(Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS), &id, 20);
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return true;
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}
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bool CBitcoinAddress::Set(const CScriptID &id) {
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SetData(Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS), &id, 20);
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return true;
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}
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bool CBitcoinAddress::Set(const CTxDestination &dest) {
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return boost::apply_visitor(CBitcoinAddressVisitor(this), dest);
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}
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bool CBitcoinAddress::IsValid() const {
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bool fCorrectSize = vchData.size() == 20;
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bool fKnownVersion = vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS) ||
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vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
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return fCorrectSize && fKnownVersion;
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}
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CTxDestination CBitcoinAddress::Get() const {
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if (!IsValid())
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return CNoDestination();
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uint160 id;
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memcpy(&id, &vchData[0], 20);
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if (vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
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return CKeyID(id);
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else if (vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS))
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return CScriptID(id);
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else
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return CNoDestination();
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}
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bool CBitcoinAddress::GetKeyID(CKeyID &keyID) const {
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if (!IsValid() || vchVersion != Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
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return false;
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uint160 id;
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memcpy(&id, &vchData[0], 20);
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keyID = CKeyID(id);
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return true;
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}
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bool CBitcoinAddress::IsScript() const {
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return IsValid() && vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
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}
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void CBitcoinSecret::SetKey(const CKey& vchSecret) {
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assert(vchSecret.IsValid());
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SetData(Params().Base58Prefix(CChainParams::SECRET_KEY), vchSecret.begin(), vchSecret.size());
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if (vchSecret.IsCompressed())
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vchData.push_back(1);
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}
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CKey CBitcoinSecret::GetKey() {
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CKey ret;
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ret.Set(&vchData[0], &vchData[32], vchData.size() > 32 && vchData[32] == 1);
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return ret;
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}
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bool CBitcoinSecret::IsValid() const {
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bool fExpectedFormat = vchData.size() == 32 || (vchData.size() == 33 && vchData[32] == 1);
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bool fCorrectVersion = vchVersion == Params().Base58Prefix(CChainParams::SECRET_KEY);
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return fExpectedFormat && fCorrectVersion;
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}
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bool CBitcoinSecret::SetString(const char* pszSecret) {
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return CBase58Data::SetString(pszSecret) && IsValid();
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}
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bool CBitcoinSecret::SetString(const std::string& strSecret) {
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return SetString(strSecret.c_str());
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}
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