protected virtual DigitallySigned ParseSignature(Stream input)
{
DigitallySigned digitallySigned = DigitallySigned.Parse(mContext, input);
SignatureAndHashAlgorithm algorithm = digitallySigned.Algorithm;
if (algorithm != null)
{
TlsUtilities.VerifySupportedSignatureAlgorithm(mSupportedSignatureAlgorithms, algorithm);
}
return(digitallySigned);
}
protected virtual void ReceiveCertificateVerifyMessage(MemoryStream buf)
{
if (mCertificateRequest == null)
{
throw new InvalidOperationException();
}
DigitallySigned digitallySigned = DigitallySigned.Parse(Context, buf);
TlsProtocol.AssertEmpty(buf);
try
{
SignatureAndHashAlgorithm algorithm = digitallySigned.Algorithm;
byte[] hash;
if (TlsUtilities.IsTlsV12(Context))
{
TlsUtilities.VerifySupportedSignatureAlgorithm(mCertificateRequest.SupportedSignatureAlgorithms, algorithm);
hash = mPrepareFinishHash.GetFinalHash(algorithm.Hash);
}
else
{
hash = mSecurityParameters.SessionHash;
}
X509CertificateStructure certificateAt = mPeerCertificate.GetCertificateAt(0);
SubjectPublicKeyInfo subjectPublicKeyInfo = certificateAt.SubjectPublicKeyInfo;
AsymmetricKeyParameter publicKey = PublicKeyFactory.CreateKey(subjectPublicKeyInfo);
TlsSigner tlsSigner = TlsUtilities.CreateTlsSigner((byte)mClientCertificateType);
tlsSigner.Init(Context);
if (!tlsSigner.VerifyRawSignature(algorithm, digitallySigned.Signature, publicKey, hash))
{
throw new TlsFatalAlert(51);
}
}
catch (TlsFatalAlert tlsFatalAlert)
{
throw tlsFatalAlert;
}
catch (Exception alertCause)
{
throw new TlsFatalAlert(51, alertCause);
}
}