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-rw-r--r--src/base58.cpp184
1 files changed, 184 insertions, 0 deletions
diff --git a/src/base58.cpp b/src/base58.cpp
index 0b08ee3d06..c9e91beef1 100644
--- a/src/base58.cpp
+++ b/src/base58.cpp
@@ -2,11 +2,18 @@
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#include "base58.h"
+
+#include "hash.h"
+#include "uint256.h"
+
#include <assert.h>
#include <stdint.h>
#include <string.h>
#include <vector>
#include <string>
+#include <boost/variant/apply_visitor.hpp>
+#include <boost/variant/static_visitor.hpp>
/* All alphanumeric characters except for "0", "I", "O", and "l" */
static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
@@ -89,3 +96,180 @@ std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend)
str += pszBase58[*(it++)];
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) ||
+ (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;
+ bool rc58 = DecodeBase58Check(psz, vchTemp);
+ if ((!rc58) || (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; }
+ };
+
+} // anon namespace
+
+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());
+}