iTextSharp.text.pdf.security.X509Certificate2Signature.Sign C# (CSharp) Метод

        public virtual byte[] Sign(byte[] message) {
            if (certificate.PrivateKey is RSACryptoServiceProvider) {
                RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)certificate.PrivateKey;
                //TODO jbonilla-No siempre funciona con SHA-256
                return rsa.SignData(message, hashAlgorithm);
            }
            else {
                DSACryptoServiceProvider dsa = (DSACryptoServiceProvider)certificate.PrivateKey;
                return dsa.SignData(message);
            }
        }

        public byte[] Sign(Stream stream, DigestAlgorithm digestAlgo, IDssPrivateKeyEntry keyEntry)
        {
            byte[] signedBytes;

            if (keyEntry is KSX509Certificate2Entry)
            {
                var cert = ((KSX509Certificate2Entry)keyEntry).Cert2;

                X509Certificate2Signature signer = new X509Certificate2Signature(cert, digestAlgo.GetName());

                signedBytes = signer.Sign(Streams.ReadAll(stream));

                stream.Close();

                return signedBytes;
            }

            throw new ArgumentException("Only allowed KSX509Certificate2Entry", "keyEntry");
        }