You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.4 KiB
95 lines
2.4 KiB
/*
|
|
This file is part of cpp-ethereum.
|
|
|
|
cpp-ethereum 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.
|
|
|
|
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/** @file Precompiled.cpp
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#include "Precompiled.h"
|
|
|
|
#include <libdevcore/Log.h>
|
|
#include <libdevcore/SHA3.h>
|
|
#include <libdevcore/Hash.h>
|
|
#include <libdevcrypto/Common.h>
|
|
#include <libethcore/Common.h>
|
|
#include <libevmcore/Params.h>
|
|
using namespace std;
|
|
using namespace dev;
|
|
using namespace dev::eth;
|
|
|
|
namespace
|
|
{
|
|
|
|
void ecrecoverCode(bytesConstRef _in, bytesRef _out)
|
|
{
|
|
struct inType
|
|
{
|
|
h256 hash;
|
|
h256 v;
|
|
h256 r;
|
|
h256 s;
|
|
} in;
|
|
|
|
memcpy(&in, _in.data(), min(_in.size(), sizeof(in)));
|
|
|
|
h256 ret;
|
|
u256 v = (u256)in.v;
|
|
if (v >= 27 && v <= 28)
|
|
{
|
|
SignatureStruct sig(in.r, in.s, (byte)((int)v - 27));
|
|
if (sig.isValid())
|
|
{
|
|
try
|
|
{
|
|
ret = sha3(recover(sig, in.hash));
|
|
}
|
|
catch (...) {}
|
|
}
|
|
}
|
|
|
|
memset(ret.data(), 0, 12);
|
|
ret.ref().copyTo(_out);
|
|
}
|
|
|
|
void sha256Code(bytesConstRef _in, bytesRef _out)
|
|
{
|
|
sha256(_in).ref().copyTo(_out);
|
|
}
|
|
|
|
void ripemd160Code(bytesConstRef _in, bytesRef _out)
|
|
{
|
|
h256(ripemd160(_in), h256::AlignRight).ref().copyTo(_out);
|
|
}
|
|
|
|
void identityCode(bytesConstRef _in, bytesRef _out)
|
|
{
|
|
_in.copyTo(_out);
|
|
}
|
|
|
|
}
|
|
|
|
std::unordered_map<unsigned, PrecompiledAddress> const& dev::eth::precompiled()
|
|
{
|
|
static const std::unordered_map<unsigned, PrecompiledAddress> c_precompiled =
|
|
{
|
|
{ 1, { [](bytesConstRef) -> bigint { return c_ecrecoverGas; }, ecrecoverCode }},
|
|
{ 2, { [](bytesConstRef i) -> bigint { return c_sha256Gas + (i.size() + 31) / 32 * c_sha256WordGas; }, sha256Code }},
|
|
{ 3, { [](bytesConstRef i) -> bigint { return c_ripemd160Gas + (i.size() + 31) / 32 * c_ripemd160WordGas; }, ripemd160Code }},
|
|
{ 4, { [](bytesConstRef i) -> bigint { return c_identityGas + (i.size() + 31) / 32 * c_identityWordGas; }, identityCode }}
|
|
};
|
|
return c_precompiled;
|
|
}
|
|
|