public void OpCheckSig(ParsedOpCode op, MsgTx transaction)
{
try
{
var rawPublicKey = MainStack.Pop();
var rawSignature = MainStack.Pop();
if (rawSignature.Length < 1)
{
MainStack.Push(false);
return;
}
var signature = rawSignature.Take(rawSignature.Length - 1).ToArray();
var signatureType = (SignatureHashType)rawSignature.Last();
AssertSignatureHashType(signatureType);
AssertSignatureEncoding(signature);
AssertPublicKeyEncoding(rawPublicKey);
var subScript = _script.GetOpCodesWithoutData(rawSignature);
var hash = CalculateSignatureHash(subScript, signatureType, (MsgTx)transaction.Clone(), _txIndex);
var ecSignature = new ECSignature(signature);
var securityService = new ECPublicSecurityService(rawPublicKey);
var isValidSignature = securityService.VerifySignature(hash, ecSignature);
MainStack.Push(isValidSignature);
}
catch (ScriptException)
{
MainStack.Push(false);
}
}
public void ECSecurityService_VerifySignature_VerifiesGeneratedSignatureAgainstPublicKey()
{
const bool isCompressed = false;
var messageHash = HashUtil.Blake256(_message);
var signature = new ECSignature(_signature);
var privateSecurityService = new ECPrivateSecurityService(_privateKey);
var publicKeyBytes = privateSecurityService.GetPublicKey(isCompressed);
var publicSecurityService = new ECPublicSecurityService(publicKeyBytes);
var hasValidSignature = publicSecurityService.VerifySignature(messageHash, signature);
Assert.True(hasValidSignature);
}
public PublicKey(byte[] publicKeyBytes)
{
Bytes = publicKeyBytes;
_ecPublicSecurityService = new ECPublicSecurityService(publicKeyBytes);
}
