public Transaction(string reciepient, double amount, ECDSA ec, string message = "")
{
TransactionIssuer = ec.ExportPubKey;
Reciepient = reciepient;
Amount = amount;
IsuueTime = DateTime.UtcNow;
TxHash = ComputeObjectHash();
//Signture = ec.Sign(TxHash).ToByteArray(StringEncoding.Base64).ToBase58Check();
Signture = ec.Sign(TxHash);
ScriptPubKey = $"{Signture};{TransactionIssuer}";
ScriptSig = $"{ScriptPubKey};CheckSig;IsOne";
}
public void TestSignature()
{
var input = Encoding.UTF8.GetBytes("Hello!");
var ecdsa = new ECDSA(new DefaultRandomGenerator());
ecdsa.Init(new ECCipherParameters(Secp256R1.Parameters, PrivateKey));
var signature = ecdsa.Sign(input, new SHA256Digest(SHA256Digest.Mode.SHA256));
var result = ecdsa.Verify(input, signature, new SHA256Digest(SHA256Digest.Mode.SHA256));
Assert.True(result);
}
public override byte[] DoSign(byte[] ske,
out int hashAlgo, out int signAlgo)
{
hashAlgo = this.hashAlgo;
byte[] hv = Hash(hashAlgo, ske);
if (skey is RSAPrivateKey)
{
RSAPrivateKey rk = skey as RSAPrivateKey;
signAlgo = SSL.RSA;
byte[] head;
switch (hashAlgo)
{
case SSL.MD5SHA1: head = null; break;
case SSL.SHA1: head = RSA.PKCS1_SHA1; break;
case SSL.SHA224: head = RSA.PKCS1_SHA224; break;
case SSL.SHA256: head = RSA.PKCS1_SHA256; break;
case SSL.SHA384: head = RSA.PKCS1_SHA384; break;
case SSL.SHA512: head = RSA.PKCS1_SHA512; break;
default:
throw new Exception();
}
return(RSA.Sign(rk, head, hv));
}
else if (skey is ECPrivateKey)
{
ECPrivateKey ek = skey as ECPrivateKey;
signAlgo = SSL.ECDSA;
return(ECDSA.Sign(ek, null, hv));
}
else
{
throw new Exception("NYI");
}
}