public SSH1UserAuthKey[] GetAvailableSSH1UserAuthKeys()
{
if (_ssh1Keys == null) {
try {
SSH1UserAuthKey k = new SSH1UserAuthKey(@"C:\P4\Tools\keys\aaa", "aaa");
_ssh1Keys = new SSH1UserAuthKey[] { k };
}
catch (Exception e) {
Debug.WriteLine(e.Message);
_ssh1Keys = new SSH1UserAuthKey[0];
}
}
return _ssh1Keys;
}
//RSA authentication
private void DoRSAChallengeResponse()
{
//read key
SSH1UserAuthKey key = new SSH1UserAuthKey(_param.IdentityFile, _param.Password);
SSH1DataWriter w = new SSH1DataWriter();
w.WriteBigInteger(key.PublicModulus);
SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA, w.ToByteArray());
p.WriteTo(_stream, _tCipher);
TraceTransmissionEvent(PacketType.SSH_CMSG_AUTH_RSA, "RSA challenge-reponse");
DataFragment response = ReceivePacket();
SSH1DataReader reader = new SSH1DataReader(response);
PacketType pt = reader.ReadPacketType();
if (pt == PacketType.SSH_SMSG_FAILURE)
{
throw new SSHException(Strings.GetString("ServerRefusedRSA"));
}
else if (pt != PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE)
{
throw new SSHException(String.Format(Strings.GetString("UnexpectedResponse"), pt));
}
TraceReceptionEvent(PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE, "received challenge");
//creating challenge
BigInteger challenge = key.decryptChallenge(reader.ReadMPInt());
byte[] rawchallenge = RSAUtil.StripPKCS1Pad(challenge, 2).getBytes();
//building response
MemoryStream bos = new MemoryStream();
bos.Write(rawchallenge, 0, rawchallenge.Length); //!!mindtermでは頭が０かどうかで変なハンドリングがあった
bos.Write(_sessionID, 0, _sessionID.Length);
byte[] reply = new MD5CryptoServiceProvider().ComputeHash(bos.ToArray());
w = new SSH1DataWriter();
w.Write(reply);
p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, w.ToByteArray());
p.WriteTo(_stream, _tCipher);
TraceReceptionEvent(PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, "received response");
}
//RSA authentication
private void DoRSAChallengeResponse()
{
//read key
SSH1UserAuthKey key = new SSH1UserAuthKey(_param.IdentityFile, _param.Password);
Transmit(
new SSH1Packet(SSH1PacketType.SSH_CMSG_AUTH_RSA)
.WriteBigInteger(key.PublicModulus)
);
TraceTransmissionEvent(SSH1PacketType.SSH_CMSG_AUTH_RSA, "RSA challenge-reponse");
DataFragment response = ReceivePacket();
SSH1DataReader reader = new SSH1DataReader(response);
SSH1PacketType pt = (SSH1PacketType) reader.ReadByte();
if (pt == SSH1PacketType.SSH_SMSG_FAILURE)
throw new SSHException(Strings.GetString("ServerRefusedRSA"));
else if (pt != SSH1PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE)
throw new SSHException(String.Format(Strings.GetString("UnexpectedResponse"), pt));
TraceReceptionEvent(SSH1PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE, "received challenge");
//creating challenge
BigInteger challenge = key.decryptChallenge(reader.ReadMPInt());
byte[] rawchallenge = RSAUtil.StripPKCS1Pad(challenge, 2).GetBytes();
//building response
byte[] hash;
using (MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider()) {
md5.TransformBlock(rawchallenge, 0, rawchallenge.Length, rawchallenge, 0);
md5.TransformFinalBlock(_sessionID, 0, _sessionID.Length);
hash = md5.Hash;
}
Transmit(
new SSH1Packet(SSH1PacketType.SSH_CMSG_AUTH_RSA_RESPONSE)
.Write(hash)
);
TraceReceptionEvent(SSH1PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, "received response");
}
//RSA authentication
private void DoRSAChallengeResponse()
{
//read key
SSH1UserAuthKey key = new SSH1UserAuthKey(_param.IdentityFile, _param.Password);
SSH1DataWriter w = new SSH1DataWriter();
w.WriteBigInteger(key.PublicModulus);
SSH1Packet p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA, w.ToByteArray());
p.WriteTo(_stream, _tCipher);
TraceTransmissionEvent(PacketType.SSH_CMSG_AUTH_RSA, "RSA challenge-reponse");
DataFragment response = ReceivePacket();
SSH1DataReader reader = new SSH1DataReader(response);
PacketType pt = reader.ReadPacketType();
if (pt == PacketType.SSH_SMSG_FAILURE)
throw new SSHException(Strings.GetString("ServerRefusedRSA"));
else if (pt != PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE)
throw new SSHException(String.Format(Strings.GetString("UnexpectedResponse"), pt));
TraceReceptionEvent(PacketType.SSH_SMSG_AUTH_RSA_CHALLENGE, "received challenge");
//creating challenge
BigInteger challenge = key.decryptChallenge(reader.ReadMPInt());
byte[] rawchallenge = RSAUtil.StripPKCS1Pad(challenge, 2).getBytes();
//building response
MemoryStream bos = new MemoryStream();
bos.Write(rawchallenge, 0, rawchallenge.Length); //!!mindtermでは頭が０かどうかで変なハンドリングがあった
bos.Write(_sessionID, 0, _sessionID.Length);
byte[] reply = new MD5CryptoServiceProvider().ComputeHash(bos.ToArray());
w = new SSH1DataWriter();
w.Write(reply);
p = SSH1Packet.FromPlainPayload(PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, w.ToByteArray());
p.WriteTo(_stream, _tCipher);
TraceReceptionEvent(PacketType.SSH_CMSG_AUTH_RSA_RESPONSE, "received response");
}
