public void Test_SignRoundTrip()
{
var privateKey = "0xD95D6DB65F3E2223703C5D8E205D98E3E6B470F067B0F94F6C6BF73D4301CE48".HexToBytes();
var publicKey = Crypto.ComputePublicKey(privateKey, true);
var address = "0x6Bc32575ACb8754886dC283c2c8ac54B1Bd93195".HexToBytes();
CollectionAssert.AreEqual(address, Crypto.ComputeAddress(publicKey));
var startTs = TimeUtils.CurrentTimeMillis();
const int n = 100;
for (var it = 0; it < n; ++it)
{
// var message = "0xdeadbeef" + it.ToString("X4");
var message =
"0xec808504a817c800825208948e7b7262e0fa4616566591d51f998f16a79fb547880de0b6b3a764000080018080";
var digest = message.HexToBytes();
// using old chain id
var signature = Crypto.Sign(digest, privateKey, false);
Assert.IsTrue(Crypto.VerifySignature(digest, signature, publicKey, false));
var recoveredPubkey = Crypto.RecoverSignature(digest, signature, false);
Assert.AreEqual(recoveredPubkey, publicKey);
// using new chain id
signature = Crypto.Sign(digest, privateKey, true);
Assert.IsTrue(Crypto.VerifySignature(digest, signature, publicKey, true));
recoveredPubkey = Crypto.RecoverSignature(digest, signature, true);
Assert.AreEqual(recoveredPubkey, publicKey);
}
var endTs = TimeUtils.CurrentTimeMillis();
Console.WriteLine($"Full sign + recover time: {endTs - startTs}ms");
Console.WriteLine($"Per 1 iteration: {(double) (endTs - startTs) / n}ms");
}
public bool VerifySign(string message, string sign, bool useNewChainId)
{
if (_privateWallet.IsLocked())
{
throw new Exception("wallet is locked");
}
var keyPair = _privateWallet.EcdsaKeyPair;
Logger.LogInformation($"public key: {keyPair.PublicKey.ToHex()}, address: {keyPair.PublicKey.GetAddress().ToHex()}");
try
{
var msg = message.HexToBytes();
var signBytes = sign.HexToBytes();
var pubkeyParsed = Crypto.RecoverSignature(msg, signBytes, useNewChainId);
if (!keyPair.PublicKey.EncodeCompressed().SequenceEqual(pubkeyParsed))
{
return(false);
}
return(Crypto.VerifySignature(msg, signBytes, keyPair.PublicKey.EncodeCompressed(), useNewChainId));
}
catch (Exception exception)
{
Logger.LogWarning($"Got exception trying to verify signed message: {exception}");
throw;
}
}