/// <summary>
/// SSH1 RSA challenge
/// </summary>
/// <param name="e">public exponent</param>
/// <param name="n">public modulus</param>
/// <param name="encryptedChallenge">encrypted challenge</param>
/// <param name="sessionId">session id</param>
/// <param name="responseType">response type</param>
private void SSH1IRSAChallenge(BigInteger e, BigInteger n, BigInteger encryptedChallenge, byte[] sessionId, uint responseType)
{
if (responseType != 1)
{
SendFailure();
return;
}
SSH1UserAuthKey key = SSH1FindKey(e, n);
if (key == null)
{
SendFailure();
return;
}
BigInteger challenge = key.decryptChallenge(encryptedChallenge);
byte[] rawchallenge = RSAUtil.StripPKCS1Pad(challenge, 2).GetBytes();
byte[] hash;
using (var md5 = new MD5CryptoServiceProvider()) {
md5.TransformBlock(rawchallenge, 0, rawchallenge.Length, rawchallenge, 0);
md5.TransformFinalBlock(sessionId, 0, sessionId.Length);
hash = md5.Hash;
}
Send(
new OpenSSHAgentForwardingMessage(OpenSSHAgentForwardingMessageType.SSH_AGENT_RSA_RESPONSE)
.Write(hash)
);
}
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);
}
