BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Tls.DigestInputBuffer.UpdateDigest C# (CSharp) Method

        internal void UpdateDigest(IDigest d)
        {
            Streams.WriteBufTo(this, new DigStream(d));
        }

        public override byte[] GenerateServerKeyExchange()
        {
            DigestInputBuffer buf = new DigestInputBuffer();

            this.mECAgreePrivateKey = TlsEccUtilities.GenerateEphemeralServerKeyExchange(mContext.SecureRandom, mNamedCurves,
                                                                                         mClientECPointFormats, buf);

            /*
             * RFC 5246 4.7. digitally-signed element needs SignatureAndHashAlgorithm from TLS 1.2
             */
            SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(
                mContext, mServerCredentials);

            IDigest d = TlsUtilities.CreateHash(signatureAndHashAlgorithm);

            SecurityParameters securityParameters = mContext.SecurityParameters;

            d.BlockUpdate(securityParameters.clientRandom, 0, securityParameters.clientRandom.Length);
            d.BlockUpdate(securityParameters.serverRandom, 0, securityParameters.serverRandom.Length);
            buf.UpdateDigest(d);

            byte[] hash = DigestUtilities.DoFinal(d);

            byte[] signature = mServerCredentials.GenerateCertificateSignature(hash);

            DigitallySigned signed_params = new DigitallySigned(signatureAndHashAlgorithm, signature);

            signed_params.Encode(buf);

            return(buf.ToArray());
        }