public static void Verify()
{
string input = File.ReadAllText("../../Output.json");
EthereumSignature inputSignature = JsonConvert.DeserializeObject <EthereumSignature>(input);
string message = inputSignature.Msg;
byte[] messageBytes = Utils.GetBytes(message);
byte[] messageHash = new Sha3Keccack().CalculateHash(messageBytes);
byte[] rawSignature = inputSignature.Sig.HexToByteArray();
byte[] r = ArrayUtils.SubArray(rawSignature, 0, 32);
byte[] s = ArrayUtils.SubArray(rawSignature, 32, 32);
int recId = rawSignature[rawSignature.Length - 1];
EthECDSASignature signature = EthECDSASignatureFactory.FromComponents(r, s);
EthECKey publicKey = EthECKey.RecoverFromSignature(signature, recId, messageHash);
bool valid = publicKey.GetPublicAddress() == inputSignature.Address;
Console.WriteLine("{0}", valid ? "Valid" : "Invalid");
}
public static void Sign()
{
string[] input = File.ReadAllLines("../../Input.txt");
string inputKey = input[0];
string inputMessage = input[1];
EthECKey privateKey = new EthECKey(inputKey);
byte[] messageBytes = Utils.GetBytes(inputMessage);
byte[] messageHash = new Sha3Keccack().CalculateHash(messageBytes);
EthECDSASignature ethECDSASignature = privateKey.SignAndCalculateV(messageHash);
EthereumSignature signature = new EthereumSignature
{
Address = privateKey.GetPublicAddress(),
Msg = inputMessage,
Sig = EncryptionUtils.ToString(ethECDSASignature),
Version = "1"
};
string output = JsonUtils.Serialize(signature);
File.WriteAllText("../../Output.json", output);
Console.WriteLine(output);
}
