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version 0.1.0 from http://www.bitcointrading.com/forum/bitcoin-client…
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Copyright (c) 2009 Satoshi Nakamoto | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in | ||
all copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
THE SOFTWARE. |
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BitCoin v0.01 ALPHA | ||
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Copyright (c) 2009 Satoshi Nakamoto | ||
Distributed under the MIT/X11 software license, see the accompanying | ||
file license.txt or http://www.opensource.org/licenses/mit-license.php. | ||
This product includes software developed by the OpenSSL Project for use in | ||
the OpenSSL Toolkit (http://www.openssl.org/). This product includes | ||
cryptographic software written by Eric Young (eay@cryptsoft.com). | ||
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Intro | ||
----- | ||
Bitcoin is an electronic cash system that uses a peer-to-peer network to | ||
prevent double-spending. It's completely decentralized with no server or | ||
central authority. | ||
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Operating Systems | ||
----------------- | ||
Windows NT/2000/XP (and probably Vista) | ||
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Vista hasn't been tested yet. All the libraries used are cross-platform, so | ||
there's nothing preventing future Linux and Mac builds. | ||
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Setup | ||
----- | ||
Unpack the files into a directory and run bitcoin.exe. | ||
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The software automatically finds other nodes to connect to. You should set | ||
your firewall to forward port 8333 to your computer so you can receive incoming | ||
connections, otherwise the nodes you can connect with will be limited. | ||
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To support the network by running a node, select: | ||
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Options->Generate Coins | ||
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and keep the program open or minimized. It runs at idle priority when no other | ||
programs are using the CPU. Your computer will be solving a very difficult | ||
computational problem that is used to lock in blocks of transactions. The time | ||
to generate a block varies each time, but may take days or months, depending | ||
on the speed of your computer and the competition on the network. It's not a | ||
computation that has to start over from the beginning if you stop and restart | ||
it. A solution might be found at any given moment it's running. As a reward | ||
for supporting the network, you receive coins when you successfully generate a | ||
block. |
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// Copyright (c) 2009 Satoshi Nakamoto | ||
// Distributed under the MIT/X11 software license, see the accompanying | ||
// file license.txt or http://www.opensource.org/licenses/mit-license.php. | ||
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// | ||
// Why base-58 instead of standard base-64 encoding? | ||
// - Don't want 0OIl characters that look the same in some fonts and | ||
// 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. | ||
// | ||
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static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"; | ||
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inline string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend) | ||
{ | ||
CAutoBN_CTX pctx; | ||
CBigNum bn58 = 58; | ||
CBigNum bn0 = 0; | ||
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// Convert big endian data to little endian | ||
// Extra zero at the end make sure bignum will interpret as a positive number | ||
vector<unsigned char> vchTmp(pend-pbegin+1, 0); | ||
reverse_copy(pbegin, pend, vchTmp.begin()); | ||
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// Convert little endian data to bignum | ||
CBigNum bn; | ||
bn.setvch(vchTmp); | ||
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// 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]; | ||
} | ||
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// Leading zeroes encoded as base58 zeros | ||
for (const unsigned char* p = pbegin; p < pend && *p == 0; p++) | ||
str += pszBase58[0]; | ||
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// Convert little endian string to big endian | ||
reverse(str.begin(), str.end()); | ||
return str; | ||
} | ||
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inline string EncodeBase58(const vector<unsigned char>& vch) | ||
{ | ||
return EncodeBase58(&vch[0], &vch[0] + vch.size()); | ||
} | ||
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inline bool DecodeBase58(const char* psz, vector<unsigned char>& vchRet) | ||
{ | ||
CAutoBN_CTX pctx; | ||
vchRet.clear(); | ||
CBigNum bn58 = 58; | ||
CBigNum bn = 0; | ||
CBigNum bnChar; | ||
while (isspace(*psz)) | ||
psz++; | ||
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// 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; | ||
} | ||
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// Get bignum as little endian data | ||
vector<unsigned char> vchTmp = bn.getvch(); | ||
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// Trim off sign byte if present | ||
if (vchTmp.size() >= 2 && vchTmp.end()[-1] == 0 && vchTmp.end()[-2] >= 0x80) | ||
vchTmp.erase(vchTmp.end()-1); | ||
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// Restore leading zeros | ||
int nLeadingZeros = 0; | ||
for (const char* p = psz; *p == pszBase58[0]; p++) | ||
nLeadingZeros++; | ||
vchRet.assign(nLeadingZeros + vchTmp.size(), 0); | ||
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// Convert little endian data to big endian | ||
reverse_copy(vchTmp.begin(), vchTmp.end(), vchRet.end() - vchTmp.size()); | ||
return true; | ||
} | ||
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inline bool DecodeBase58(const string& str, vector<unsigned char>& vchRet) | ||
{ | ||
return DecodeBase58(str.c_str(), vchRet); | ||
} | ||
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inline string EncodeBase58Check(const vector<unsigned char>& vchIn) | ||
{ | ||
// add 4-byte hash check to the end | ||
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); | ||
} | ||
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inline bool DecodeBase58Check(const char* psz, vector<unsigned char>& vchRet) | ||
{ | ||
if (!DecodeBase58(psz, vchRet)) | ||
return false; | ||
if (vchRet.size() < 4) | ||
{ | ||
vchRet.clear(); | ||
return false; | ||
} | ||
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; | ||
} | ||
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inline bool DecodeBase58Check(const string& str, vector<unsigned char>& vchRet) | ||
{ | ||
return DecodeBase58Check(str.c_str(), vchRet); | ||
} | ||
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static const unsigned char ADDRESSVERSION = 0; | ||
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inline string Hash160ToAddress(uint160 hash160) | ||
{ | ||
// add 1-byte version number to the front | ||
vector<unsigned char> vch(1, ADDRESSVERSION); | ||
vch.insert(vch.end(), UBEGIN(hash160), UEND(hash160)); | ||
return EncodeBase58Check(vch); | ||
} | ||
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inline bool AddressToHash160(const char* psz, uint160& hash160Ret) | ||
{ | ||
vector<unsigned char> 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); | ||
} | ||
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inline bool AddressToHash160(const string& str, uint160& hash160Ret) | ||
{ | ||
return AddressToHash160(str.c_str(), hash160Ret); | ||
} | ||
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inline bool IsValidBitcoinAddress(const char* psz) | ||
{ | ||
uint160 hash160; | ||
return AddressToHash160(psz, hash160); | ||
} | ||
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inline bool IsValidBitcoinAddress(const string& str) | ||
{ | ||
return IsValidBitcoinAddress(str.c_str()); | ||
} | ||
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inline string PubKeyToAddress(const vector<unsigned char>& vchPubKey) | ||
{ | ||
return Hash160ToAddress(Hash160(vchPubKey)); | ||
} |
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