public static bool VerifySignature(string publicKey, byte[] signedData, byte[] dataHash)
{
var eth = new EthECKey(publicKey.HexToByteArray(), false);
var result = eth.Verify(dataHash, EthECDSASignature.FromDER(signedData));
return(result);
}
public void SigTest()
{
var key = EthECKey.GenerateKey();
var privatekey1 = key.GetPrivateKey();
var publicKeyAddress = key.GetPublicAddress();
var str = "0a0277372208420acec80decf6fc40b8b9d59dd72e5a68080112640a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412330a1541b221f7d502a2120fe5eafd6c87507741955f168812154194c5e2d9527ddb212e4b69fb52e62b551ee39eee1880ade20470aaf7d19dd72e";
var signHex = EthECKey.Sign(str.HexToByteArray(), privatekey1);
var verify = EthECKey.Verify(str.HexToByteArray(), signHex, publicKeyAddress);
}
public void ShouldSignEncodeTransactionAndRecoverPublicAddress()
{
var privateKey = "b5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7";
var sendersAddress = "12890d2cce102216644c59daE5baed380d84830c";
var publicKey =
"87977ddf1e8e4c3f0a4619601fc08ac5c1dcf78ee64e826a63818394754cef52457a10a599cb88afb7c5a6473b7534b8b150d38d48a11c9b515dd01434cceb08";
var key = new EthECKey(privateKey.HexToByteArray(), true);
var hash = "test".ToHexUTF8().HexToByteArray();
var signature = key.Sign(hash);
Assert.True(key.Verify(hash, signature));
Assert.Equal(key.GetPubKeyNoPrefix().ToHex(), publicKey);
Assert.Equal(sendersAddress.EnsureHexPrefix().ToLower(), key.GetPublicAddress().EnsureHexPrefix().ToLower());
}
public bool IsValid()
{
if (FromAddress == null)
{
return(true);
}
if (Signature == null)
{
throw new Exception("No singature in this promise.");
}
byte[] hashBytes = Encoding.UTF8.GetBytes(CalculateHash());
EthECKey pubKeyRecovered = EthECKey.RecoverFromSignature(Signature, hashBytes);
return(pubKeyRecovered.Verify(hashBytes, Signature));
}
