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Signatures working.

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This commit is contained in:
Gav Wood 2014-01-05 18:47:12 +00:00
parent e5d733fbb4
commit 9eb90ebbd9
1 changed files with 30 additions and 35 deletions
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65
main.cpp
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@ -7,35 +7,15 @@
using namespace std; using namespace std;
using namespace eth; using namespace eth;
std::string randomWord()
{
static std::mt19937_64 s_eng(0);
std::string ret(uniform_int_distribution<int>(4, 10)(s_eng), ' ');
char const n[] = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890";
uniform_int_distribution<int> d(0, sizeof(n) - 2);
for (char& c: ret)
c = n[d(s_eng)];
return ret;
}
int main() int main()
{ {
secp256k1_start();
bytes pubkey(65);
int pubkeylen = 65;
{
cout << "SEC: " << asHex(sha256("123", false)) << endl;
int ret = secp256k1_ecdsa_pubkey_create(pubkey.data(), &pubkeylen, (byte const*)sha256("123", false).data(), 1);
pubkey.resize(pubkeylen);
cout << "PUB: " << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
}
bytes tx = fromUserHex("88005401010101010101010101010101010101010101011f0de0b6b3a76400001ce8d4a5100080181c373130a009ba1f10285d4e659568bfcfec85067855c5a3c150100815dad4ef98fd37cf0593828c89db94bd6c64e210a32ef8956eaa81ea9307194996a3b879441f5d"); bytes tx = fromUserHex("88005401010101010101010101010101010101010101011f0de0b6b3a76400001ce8d4a5100080181c373130a009ba1f10285d4e659568bfcfec85067855c5a3c150100815dad4ef98fd37cf0593828c89db94bd6c64e210a32ef8956eaa81ea9307194996a3b879441f5d");
cout << "TX: " << RLP(tx) << endl; cout << "TX: " << RLP(tx) << endl;
Transaction t(tx); Transaction t(tx);
std::string sig64 = toBigEndianString(t.vrs.r) + toBigEndianString(t.vrs.s); cout << "SENDER: " << hex << t.sender() << endl;
bytes sig64 = toBigEndian(t.vrs.r) + toBigEndian(t.vrs.s);
cout << "SIG: " << sig64.size() << " " << asHex(sig64) << " " << t.vrs.v << endl; cout << "SIG: " << sig64.size() << " " << asHex(sig64) << " " << t.vrs.v << endl;
auto msg = t.rlp(false); auto msg = t.rlp(false);
@ -44,30 +24,45 @@ int main()
std::string hmsg = sha256(t.rlpString(false), false); std::string hmsg = sha256(t.rlpString(false), false);
cout << "SHA256(RLP(TX w/o SIG)): 0x" << asHex(hmsg) << endl; cout << "SHA256(RLP(TX w/o SIG)): 0x" << asHex(hmsg) << endl;
bytes privkey = sha256Bytes("123");
secp256k1_start();
{
bytes pubkey(65);
int pubkeylen = 65;
int ret = secp256k1_ecdsa_seckey_verify(privkey.data());
cout << "SEC: " << dec << ret << " " << asHex(privkey) << endl;
ret = secp256k1_ecdsa_pubkey_create(pubkey.data(), &pubkeylen, privkey.data(), 1);
pubkey.resize(pubkeylen);
int good = secp256k1_ecdsa_pubkey_verify(pubkey.data(), pubkey.size());
cout << "PUB: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << (good ? " GOOD" : " BAD") << endl;
}
// Test roundtrip...
{ {
bytes sig(64); bytes sig(64);
u256 nonce = 0; u256 nonce = 0;
int v = 0; int v = 0;
int ret = secp256k1_ecdsa_sign_compact((byte const*)hmsg.data(), hmsg.size(), sig.data(), (byte const*)sha256("123", false).data(), (byte const*)&nonce, &v); int ret = secp256k1_ecdsa_sign_compact((byte const*)hmsg.data(), hmsg.size(), sig.data(), privkey.data(), (byte const*)&nonce, &v);
cout << "MYSIG: " << dec << ret << " " << sig.size() << " " << asHex(sig) << " " << v << endl; cout << "MYSIG: " << dec << ret << " " << sig.size() << " " << asHex(sig) << " " << v << endl;
ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig.data(), pubkey.data(), &pubkeylen, 1, (int)t.vrs.v); bytes pubkey(65);
int pubkeylen = 65;
ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig.data(), pubkey.data(), &pubkeylen, 0, v);
pubkey.resize(pubkeylen); pubkey.resize(pubkeylen);
cout << "MYREC: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl; cout << "MYREC: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
} }
{ {
pubkey.resize(65); bytes pubkey(65);
int ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 1, (int)t.vrs.v); int pubkeylen = 65;
int ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 0, (int)t.vrs.v - 27);
pubkey.resize(pubkeylen); pubkey.resize(pubkeylen);
cout << "REC: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl; cout << "RECPUB: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
cout << hex << sha256(pubkey) << endl; cout << "SENDER: " << hex << low160(eth::sha256(bytesConstRef(&pubkey).cropped(1))) << endl;
pubkey.resize(65);
ret = secp256k1_ecdsa_recover_compact((byte const*)hmsg.data(), hmsg.size(), (byte const*)sig64.data(), pubkey.data(), &pubkeylen, 0, (int)t.vrs.v);
pubkey.resize(pubkeylen);
cout << "REC+: " << dec << ret << " " << pubkeylen << " " << asHex(pubkey) << endl;
cout << hex << sha256(pubkey) << endl;
} }
{ {