Granados.SSH2.SSH2UserAuthKey.Sign C# (CSharp) Method

        public byte[] Sign(byte[] data)
        {
            switch (_keypair.Algorithm) {
                case PublicKeyAlgorithm.RSA:
                    return ((RSAKeyPair)_keypair).SignWithSHA1(data);
                case PublicKeyAlgorithm.DSA:
                    return ((DSAKeyPair)_keypair).Sign(new SHA1CryptoServiceProvider().ComputeHash(data));
                case PublicKeyAlgorithm.ECDSA_SHA2_NISTP256:
                case PublicKeyAlgorithm.ECDSA_SHA2_NISTP384:
                case PublicKeyAlgorithm.ECDSA_SHA2_NISTP521:
                    return ((ECDSAKeyPair)_keypair).Sign(data);
                case PublicKeyAlgorithm.ED25519:
                    return ((EDDSAKeyPair)_keypair).Sign(data);
                default:
                    throw new SSHException("unknown algorithm");
            }
        }