TomZ
139 lines
3.7 KiB
C++
139 lines
3.7 KiB
C++
/*
|
|
* This file is part of the Flowee project
|
|
* Copyright (C) 2009-2010 Satoshi Nakamoto
|
|
* Copyright (C) 2009-2015 The Bitcoin Core developers
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "uint256.h"
|
|
|
|
#include "utilstrencodings.h"
|
|
|
|
#include <cstdio>
|
|
#include <cstring>
|
|
|
|
template <unsigned int BITS>
|
|
base_blob<BITS>::base_blob(const std::vector<unsigned char>& vch)
|
|
{
|
|
assert(vch.size() == sizeof(data));
|
|
memcpy(data, &vch[0], sizeof(data));
|
|
}
|
|
|
|
template <unsigned int BITS>
|
|
std::string base_blob<BITS>::GetHex() const
|
|
{
|
|
char psz[sizeof(data) * 2 + 1];
|
|
for (unsigned int i = 0; i < sizeof(data); i++)
|
|
sprintf(psz + i * 2, "%02x", data[sizeof(data) - i - 1]);
|
|
return std::string(psz, psz + sizeof(data) * 2);
|
|
}
|
|
|
|
template <unsigned int BITS>
|
|
void base_blob<BITS>::SetHex(const char* psz)
|
|
{
|
|
memset(data, 0, sizeof(data));
|
|
|
|
// skip leading spaces
|
|
while (isspace(*psz))
|
|
psz++;
|
|
|
|
// skip 0x
|
|
if (psz[0] == '0' && tolower(psz[1]) == 'x')
|
|
psz += 2;
|
|
|
|
// hex string to uint
|
|
const char* pbegin = psz;
|
|
while (::HexDigit(*psz) != -1)
|
|
psz++;
|
|
psz--;
|
|
unsigned char* p1 = (unsigned char*)data;
|
|
unsigned char* pend = p1 + WIDTH;
|
|
while (psz >= pbegin && p1 < pend) {
|
|
*p1 = ::HexDigit(*psz--);
|
|
if (psz >= pbegin) {
|
|
*p1 |= ((unsigned char)::HexDigit(*psz--) << 4);
|
|
p1++;
|
|
}
|
|
}
|
|
}
|
|
|
|
template <unsigned int BITS>
|
|
void base_blob<BITS>::SetHex(const std::string& str)
|
|
{
|
|
SetHex(str.c_str());
|
|
}
|
|
|
|
template <unsigned int BITS>
|
|
std::string base_blob<BITS>::ToString() const
|
|
{
|
|
return (GetHex());
|
|
}
|
|
|
|
// Explicit instantiations for base_blob<160>
|
|
template base_blob<160>::base_blob(const std::vector<unsigned char>&);
|
|
template std::string base_blob<160>::GetHex() const;
|
|
template std::string base_blob<160>::ToString() const;
|
|
template void base_blob<160>::SetHex(const char*);
|
|
template void base_blob<160>::SetHex(const std::string&);
|
|
|
|
// Explicit instantiations for base_blob<256>
|
|
template base_blob<256>::base_blob(const std::vector<unsigned char>&);
|
|
template std::string base_blob<256>::GetHex() const;
|
|
template std::string base_blob<256>::ToString() const;
|
|
template void base_blob<256>::SetHex(const char*);
|
|
template void base_blob<256>::SetHex(const std::string&);
|
|
|
|
static void inline HashMix(uint32_t& a, uint32_t& b, uint32_t& c)
|
|
{
|
|
// Taken from lookup3, by Bob Jenkins.
|
|
a -= c;
|
|
a ^= ((c << 4) | (c >> 28));
|
|
c += b;
|
|
b -= a;
|
|
b ^= ((a << 6) | (a >> 26));
|
|
a += c;
|
|
c -= b;
|
|
c ^= ((b << 8) | (b >> 24));
|
|
b += a;
|
|
a -= c;
|
|
a ^= ((c << 16) | (c >> 16));
|
|
c += b;
|
|
b -= a;
|
|
b ^= ((a << 19) | (a >> 13));
|
|
a += c;
|
|
c -= b;
|
|
c ^= ((b << 4) | (b >> 28));
|
|
b += a;
|
|
}
|
|
|
|
static void inline HashFinal(uint32_t& a, uint32_t& b, uint32_t& c)
|
|
{
|
|
// Taken from lookup3, by Bob Jenkins.
|
|
c ^= b;
|
|
c -= ((b << 14) | (b >> 18));
|
|
a ^= c;
|
|
a -= ((c << 11) | (c >> 21));
|
|
b ^= a;
|
|
b -= ((a << 25) | (a >> 7));
|
|
c ^= b;
|
|
c -= ((b << 16) | (b >> 16));
|
|
a ^= c;
|
|
a -= ((c << 4) | (c >> 28));
|
|
b ^= a;
|
|
b -= ((a << 14) | (a >> 18));
|
|
c ^= b;
|
|
c -= ((b << 24) | (b >> 8));
|
|
}
|