Ejemplo n.º 1
0
        private void SendSign(SSH2DataReader r)
        {
            byte[] blob = r.ReadString();
            byte[] data = r.ReadString();
            //Debug.WriteLine(String.Format("SignRequest blobsize={0} datasize={1}", blob.Length, data.Length));

            SSH2UserAuthKey[] keys = _client.GetAvailableSSH2UserAuthKeys();
            SSH2UserAuthKey   key  = FindKey(keys, blob);

            if (key == null)
            {
                TransmitWriter(OpenWriter(AgentForwadPacketType.SSH_AGENT_FAILURE));
                _client.NotifyPublicKeyDidNotMatch();
            }
            else
            {
                SSH2DataWriter signpack = new SSH2DataWriter();
                signpack.WriteString(SSH2Util.PublicKeyAlgorithmName(key.Algorithm));
                signpack.WriteAsString(key.Sign(data));

                SSH2DataWriter wr = OpenWriter(AgentForwadPacketType.SSH2_AGENT_SIGN_RESPONSE);
                wr.WriteAsString(signpack.ToByteArray());
                TransmitWriter(wr);
            }
        }
Ejemplo n.º 2
0
        /// <summary>
        /// SSH2 private key signature
        /// </summary>
        private void SSH2Sign(byte[] blob, byte[] data, uint flags)
        {
            if ((flags & SSH_AGENT_OLD_SIGNATURE) != 0)
            {
                SendFailure();
                return;
            }

            SSH2UserAuthKey key = SSH2FindKey(blob);

            if (key == null)
            {
                SendFailure();
                return;
            }

            SSH2PayloadImageBuilder image = new SSH2PayloadImageBuilder();

            image.WriteString(SSH2Util.PublicKeyAlgorithmName(key.Algorithm));
            image.WriteAsString(key.Sign(data));
            byte[] signatureBlob = image.GetBytes();

            Send(
                new OpenSSHAgentForwardingMessage(OpenSSHAgentForwardingMessageType.SSH2_AGENT_SIGN_RESPONSE)
                .WriteAsString(signatureBlob)
                );
        }