X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fbase58.h;h=0ca0fda7da37646e00c6c4d5203a8e1d4b741784;hb=2404891de8ac5b357d0abde90f2e286a3153fdef;hp=828f8d578d6a66640b65bd90497af6b928e0e515;hpb=84c3fb07b0b8199c7f85c5de280e7100bad0786f;p=novacoin.git diff --git a/src/base58.h b/src/base58.h index 828f8d5..0ca0fda 100644 --- a/src/base58.h +++ b/src/base58.h @@ -1,6 +1,7 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2012 The Bitcoin Developers // Distributed under the MIT/X11 software license, see the accompanying -// file license.txt or http://www.opensource.org/licenses/mit-license.php. +// file COPYING or http://www.opensource.org/licenses/mit-license.php. // @@ -9,193 +10,166 @@ // could be used to create visually identical looking account numbers. // - A string with non-alphanumeric characters is not as easily accepted as an account number. // - E-mail usually won't line-break if there's no punctuation to break at. -// - Doubleclicking selects the whole number as one word if it's all alphanumeric. +// - Double-clicking selects the whole number as one word if it's all alphanumeric. // +#ifndef BITCOIN_BASE58_H +#define BITCOIN_BASE58_H +#include +#include +#include // for OPENSSL_cleanse() +#include "bignum.h" +#include "key.h" +#include "script.h" -static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"; +// Encode a byte sequence as a base58-encoded string +std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend); +// Encode a byte vector as a base58-encoded string +std::string EncodeBase58(const std::vector& vch); -inline string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend) -{ - CAutoBN_CTX pctx; - CBigNum bn58 = 58; - CBigNum bn0 = 0; - - // Convert big endian data to little endian - // Extra zero at the end make sure bignum will interpret as a positive number - vector vchTmp(pend-pbegin+1, 0); - reverse_copy(pbegin, pend, vchTmp.begin()); - - // Convert little endian data to bignum - CBigNum bn; - bn.setvch(vchTmp); - - // Convert bignum to string - string str; - str.reserve((pend - pbegin) * 138 / 100 + 1); - CBigNum dv; - CBigNum rem; - while (bn > bn0) - { - if (!BN_div(&dv, &rem, &bn, &bn58, pctx)) - throw bignum_error("EncodeBase58 : BN_div failed"); - bn = dv; - unsigned int c = rem.getulong(); - str += pszBase58[c]; - } - - // Leading zeroes encoded as base58 zeros - for (const unsigned char* p = pbegin; p < pend && *p == 0; p++) - str += pszBase58[0]; - - // Convert little endian string to big endian - reverse(str.begin(), str.end()); - return str; -} +// Decode a base58-encoded string psz into byte vector vchRet +// returns true if decoding is successful +bool DecodeBase58(const char* psz, std::vector& vchRet); -inline string EncodeBase58(const vector& vch) -{ - return EncodeBase58(&vch[0], &vch[0] + vch.size()); -} - -inline bool DecodeBase58(const char* psz, vector& vchRet) -{ - CAutoBN_CTX pctx; - vchRet.clear(); - CBigNum bn58 = 58; - CBigNum bn = 0; - CBigNum bnChar; - while (isspace(*psz)) - psz++; - - // Convert big endian string to bignum - for (const char* p = psz; *p; p++) - { - const char* p1 = strchr(pszBase58, *p); - if (p1 == NULL) - { - while (isspace(*p)) - p++; - if (*p != '\0') - return false; - break; - } - bnChar.setulong(p1 - pszBase58); - if (!BN_mul(&bn, &bn, &bn58, pctx)) - throw bignum_error("DecodeBase58 : BN_mul failed"); - bn += bnChar; - } +// Decode a base58-encoded string str into byte vector vchRet +// returns true if decoding is successful +bool DecodeBase58(const std::string& str, std::vector& vchRet); - // Get bignum as little endian data - vector vchTmp = bn.getvch(); +// Encode a byte vector to a base58-encoded string, including checksum +std::string EncodeBase58Check(const std::vector& vchIn); - // Trim off sign byte if present - if (vchTmp.size() >= 2 && vchTmp.end()[-1] == 0 && vchTmp.end()[-2] >= 0x80) - vchTmp.erase(vchTmp.end()-1); +// Decode a base58-encoded string psz that includes a checksum, into byte vector vchRet +// returns true if decoding is successful +bool DecodeBase58Check(const char* psz, std::vector& vchRet); - // Restore leading zeros - int nLeadingZeros = 0; - for (const char* p = psz; *p == pszBase58[0]; p++) - nLeadingZeros++; - vchRet.assign(nLeadingZeros + vchTmp.size(), 0); +// Decode a base58-encoded string str that includes a checksum, into byte vector vchRet +// returns true if decoding is successful +bool DecodeBase58Check(const std::string& str, std::vector& vchRet); - // Convert little endian data to big endian - reverse_copy(vchTmp.begin(), vchTmp.end(), vchRet.end() - vchTmp.size()); - return true; -} - -inline bool DecodeBase58(const string& str, vector& vchRet) +/** Base class for all base58-encoded data */ +class CBase58Data { - return DecodeBase58(str.c_str(), vchRet); -} - - - - - -inline string EncodeBase58Check(const vector& vchIn) +protected: + // the version byte + unsigned char nVersion; + + // the actually encoded data + std::vector vchData; + + CBase58Data(); + ~CBase58Data(); + + void SetData(int nVersionIn, const void* pdata, size_t nSize); + void SetData(int nVersionIn, const unsigned char *pbegin, const unsigned char *pend); + +public: + bool SetString(const char* psz); + bool SetString(const std::string& str); + std::string ToString() const; + const std::vector &GetData() const; + + int CompareTo(const CBase58Data& b58) const; + 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; } + bool operator> (const CBase58Data& b58) const { return CompareTo(b58) > 0; } +}; + +/** base58-encoded Bitcoin addresses. + * Public-key-hash-addresses have version 0 (or 111 testnet). + * The data vector contains RIPEMD160(SHA256(pubkey)), where pubkey is the serialized public key. + * Script-hash-addresses have version 5 (or 196 testnet). + * The data vector contains RIPEMD160(SHA256(cscript)), where cscript is the serialized redemption script. + * Pubkey-pair-addresses have version 1 (or 6 testnet) + * The data vector contains a serialized copy of two compressed ECDSA secp256k1 public keys. + */ +class CBitcoinAddress; +class CBitcoinAddressVisitor : public boost::static_visitor { - // add 4-byte hash check to the end - vector vch(vchIn); - uint256 hash = Hash(vch.begin(), vch.end()); - vch.insert(vch.end(), (unsigned char*)&hash, (unsigned char*)&hash + 4); - return EncodeBase58(vch); -} - -inline bool DecodeBase58Check(const char* psz, vector& vchRet) +private: + CBitcoinAddress *addr; +public: + CBitcoinAddressVisitor(CBitcoinAddress *addrIn) : addr(addrIn) { } + bool operator()(const CKeyID &id) const; + bool operator()(const CScriptID &id) const; + bool operator()(const CMalleablePubKey &mpk) const; + bool operator()(const CNoDestination &no) const; +}; + +class CBitcoinAddress : public CBase58Data { - if (!DecodeBase58(psz, vchRet)) - return false; - if (vchRet.size() < 4) +public: + enum { - vchRet.clear(); - return false; - } - uint256 hash = Hash(vchRet.begin(), vchRet.end()-4); - if (memcmp(&hash, &vchRet.end()[-4], 4) != 0) + PUBKEY_PAIR_ADDRESS = 1, + PUBKEY_ADDRESS = 8, + SCRIPT_ADDRESS = 20, + PUBKEY_PAIR_ADDRESS_TEST = 6, + PUBKEY_ADDRESS_TEST = 111, + SCRIPT_ADDRESS_TEST = 196 + }; + + bool Set(const CKeyID &id); + bool Set(const CScriptID &id); + bool Set(const CTxDestination &dest); + bool Set(const CMalleablePubKey &mpk); + bool Set(const CBitcoinAddress &dest); + bool IsValid() const; + + CBitcoinAddress() { - vchRet.clear(); - return false; } - vchRet.resize(vchRet.size()-4); - return true; -} - -inline bool DecodeBase58Check(const string& str, vector& vchRet) -{ - return DecodeBase58Check(str.c_str(), vchRet); -} - - - + CBitcoinAddress(const CTxDestination &dest) + { + Set(dest); + } + CBitcoinAddress(const CMalleablePubKey &mpk) + { + Set(mpk); + } -#define ADDRESSVERSION ((unsigned char)(fTestNet ? 111 : 0)) + CBitcoinAddress(const std::string& strAddress) + { + SetString(strAddress); + } -inline string Hash160ToAddress(uint160 hash160) -{ - // add 1-byte version number to the front - vector vch(1, ADDRESSVERSION); - vch.insert(vch.end(), UBEGIN(hash160), UEND(hash160)); - return EncodeBase58Check(vch); -} + CBitcoinAddress(const char* pszAddress) + { + SetString(pszAddress); + } -inline bool AddressToHash160(const char* psz, uint160& hash160Ret) -{ - vector vch; - if (!DecodeBase58Check(psz, vch)) - return false; - if (vch.empty()) - return false; - unsigned char nVersion = vch[0]; - if (vch.size() != sizeof(hash160Ret) + 1) - return false; - memcpy(&hash160Ret, &vch[1], sizeof(hash160Ret)); - return (nVersion <= ADDRESSVERSION); -} - -inline bool AddressToHash160(const string& str, uint160& hash160Ret) -{ - return AddressToHash160(str.c_str(), hash160Ret); -} + CTxDestination Get() const; + bool GetKeyID(CKeyID &keyID) const; + bool IsScript() const; + bool IsPubKey() const; + bool IsPair() const; +}; -inline bool IsValidBitcoinAddress(const char* psz) -{ - uint160 hash160; - return AddressToHash160(psz, hash160); -} +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 CMalleablePubKey &mpk) const { return addr->Set(mpk); } +bool inline CBitcoinAddressVisitor::operator()(const CNoDestination &id) const { return false; } -inline bool IsValidBitcoinAddress(const string& str) +/** A base58-encoded secret key */ +class CBitcoinSecret : public CBase58Data { - return IsValidBitcoinAddress(str.c_str()); -} +public: + void SetSecret(const CSecret& vchSecret, bool fCompressed); + CSecret GetSecret(bool &fCompressedOut); + bool IsValid() const; + bool SetString(const char* pszSecret); + bool SetString(const std::string& strSecret); + CBitcoinSecret(const CSecret& vchSecret, bool fCompressed); + CBitcoinSecret() + { + } +}; -inline string PubKeyToAddress(const vector& vchPubKey) -{ - return Hash160ToAddress(Hash160(vchPubKey)); -} +#endif