public override bool Pass(INodeEndpointProtocolRequest request)
{
lock (this.stepLock)
{
switch (this.currentStep)
{
case Step.WaitingForAuthData:
{
this.currentStep = Step.WaitingForAuthResult;
byte[] authData = request.Message;
byte[] encryptedAuthData = Md5AuthDataAndPassword(authData, this.passwordMD5);
this.client.Send(encryptedAuthData);
}
return(false);
case Step.WaitingForAuthResult:
{
this.currentStep = Step.WaitingForAesKey;
if (request.RequestMessage() != "PASS")
{
this.client.Disconnect();
}
else
{
byte[] publicKey, privateKey;
Crypting.RsaGenerateKey(out publicKey, out privateKey);
this.client.Send(publicKey);
this.privateKey = privateKey;
}
}
return(false);
case Step.WaitingForAesKey:
{
this.currentStep = Step.Done;
byte[] encryptedMessage = request.Message;
byte[] message = Crypting.RsaDecrypt(encryptedMessage, this.privateKey);
this.privateKey = null;
int keyLength = StreamProtocol <Stream> .ReadLeadBytes(message);
byte[] key = new byte[keyLength];
byte[] iv = new byte[message.Length - sizeof(int) - keyLength];
Array.Copy(message, sizeof(int), key, 0, key.Length);
Array.Copy(message, sizeof(int) + keyLength, iv, 0, iv.Length);
SetKey(key, iv);
this.connectionEvent.Set();
}
return(false);
}
}
return(true);
}
