solidity/crypto.cpp

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/*
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
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(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
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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
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
/** @file crypto.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
* Crypto test functions.
*/
#include <random>
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#include <secp256k1/secp256k1.h>
#include <libdevcore/Common.h>
#include <libdevcore/RLP.h>
#include <libdevcore/Log.h>
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#include <libethereum/Transaction.h>
#include <boost/test/unit_test.hpp>
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using namespace std;
using namespace dev;
using namespace dev::eth;
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BOOST_AUTO_TEST_CASE(crypto_tests)
{
cnote << "Testing Crypto...";
secp256k1_start();
KeyPair p(Secret(fromHex("3ecb44df2159c26e0f995712d4f39b6f6e499b40749b1cf1246c37f9516cb6a4")));
BOOST_REQUIRE(p.pub() == Public(fromHex("97466f2b32bc3bb76d4741ae51cd1d8578b48d3f1e68da206d47321aec267ce78549b514e4453d74ef11b0cd5e4e4c364effddac8b51bcfc8de80682f952896f")));
BOOST_REQUIRE(p.address() == Address(fromHex("8a40bfaa73256b60764c1bf40675a99083efb075")));
{
Transaction t;
t.nonce = 0;
t.receiveAddress = h160(fromHex("944400f4b88ac9589a0f17ed4671da26bddb668b"));
t.value = 1000;
auto rlp = t.rlp(false);
cnote << RLP(rlp);
cnote << toHex(rlp);
cnote << t.sha3(false);
t.sign(p.secret());
rlp = t.rlp(true);
cnote << RLP(rlp);
cnote << toHex(rlp);
cnote << t.sha3(true);
BOOST_REQUIRE(t.sender() == p.address());
}
}
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int cryptoTest()
{
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cnote << "Testing Crypto...";
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secp256k1_start();
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KeyPair p(Secret(fromHex("3ecb44df2159c26e0f995712d4f39b6f6e499b40749b1cf1246c37f9516cb6a4")));
assert(p.pub() == Public(fromHex("97466f2b32bc3bb76d4741ae51cd1d8578b48d3f1e68da206d47321aec267ce78549b514e4453d74ef11b0cd5e4e4c364effddac8b51bcfc8de80682f952896f")));
assert(p.address() == Address(fromHex("8a40bfaa73256b60764c1bf40675a99083efb075")));
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{
Transaction t;
t.nonce = 0;
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t.receiveAddress = h160(fromHex("944400f4b88ac9589a0f17ed4671da26bddb668b"));
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t.value = 1000;
auto rlp = t.rlp(false);
cnote << RLP(rlp);
cnote << toHex(rlp);
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cnote << t.sha3(false);
t.sign(p.secret());
rlp = t.rlp(true);
cnote << RLP(rlp);
cnote << toHex(rlp);
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cnote << t.sha3(true);
assert(t.sender() == p.address());
}
#if 0
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// Test transaction.
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bytes tx = fromHex("88005401010101010101010101010101010101010101011f0de0b6b3a76400001ce8d4a5100080181c373130a009ba1f10285d4e659568bfcfec85067855c5a3c150100815dad4ef98fd37cf0593828c89db94bd6c64e210a32ef8956eaa81ea9307194996a3b879441f5d");
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cout << "TX: " << RLP(tx) << endl;
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Transaction t2(tx);
cout << "SENDER: " << hex << t2.sender() << dec << endl;
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secp256k1_start();
Transaction t;
t.nonce = 0;
t.value = 1; // 1 wei.
t.receiveAddress = toAddress(sha3("123"));
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bytes sig64 = toBigEndian(t.vrs.r) + toBigEndian(t.vrs.s);
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cout << "SIG: " << sig64.size() << " " << toHex(sig64) << " " << t.vrs.v << endl;
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auto msg = t.rlp(false);
cout << "TX w/o SIG: " << RLP(msg) << endl;
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cout << "RLP(TX w/o SIG): " << toHex(t.rlpString(false)) << endl;
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std::string hmsg = sha3(t.rlpString(false), false);
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cout << "SHA256(RLP(TX w/o SIG)): 0x" << toHex(hmsg) << endl;
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bytes privkey = sha3Bytes("123");
{
bytes pubkey(65);
int pubkeylen = 65;
int ret = secp256k1_ecdsa_seckey_verify(privkey.data());
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cout << "SEC: " << dec << ret << " " << toHex(privkey) << endl;
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ret = secp256k1_ecdsa_pubkey_create(pubkey.data(), &pubkeylen, privkey.data(), 1);
pubkey.resize(pubkeylen);
int good = secp256k1_ecdsa_pubkey_verify(pubkey.data(), (int)pubkey.size());
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cout << "PUB: " << dec << ret << " " << pubkeylen << " " << toHex(pubkey) << (good ? " GOOD" : " BAD") << endl;
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}
// Test roundtrip...
{
bytes sig(64);
u256 nonce = 0;
int v = 0;
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cout << toHex(hmsg) << endl;
cout << toHex(privkey) << endl;
cout << hex << nonce << dec << endl;
int ret = secp256k1_ecdsa_sign_compact((byte const*)hmsg.data(), (int)hmsg.size(), sig.data(), privkey.data(), (byte const*)&nonce, &v);
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cout << "MYSIG: " << dec << ret << " " << sig.size() << " " << toHex(sig) << " " << v << endl;
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bytes pubkey(65);
int pubkeylen = 65;
ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), (int)hmsg.size(), (byte const*)sig.data(), pubkey.data(), &pubkeylen, 0, v);
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pubkey.resize(pubkeylen);
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cout << "MYREC: " << dec << ret << " " << pubkeylen << " " << toHex(pubkey) << endl;
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}
{
bytes pubkey(65);
int pubkeylen = 65;
int ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), (int)hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 0, (int)t.vrs.v - 27);
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pubkey.resize(pubkeylen);
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cout << "RECPUB: " << dec << ret << " " << pubkeylen << " " << toHex(pubkey) << endl;
cout << "SENDER: " << hex << toAddress(dev::eth::sha3(bytesConstRef(&pubkey).cropped(1))) << dec << endl;
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}
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#endif
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return 0;
}