| public static ComputeAsymetricKeys ( byte sharedSecret, byte initiatorNonce, byte responderNonce, byte &requestKey, byte &responseKey ) : void | ||
| sharedSecret | byte | |
| initiatorNonce | byte | |
| responderNonce | byte | |
| requestKey | byte | |
| responseKey | byte | |
| return | void | |
public void Run()
{
if (DH == null)
{
DH = RtmfpUtils.BeginDiffieHellman(ref Nonce);
return;
}
// Compute Diffie-Hellman secret
SharedSecret = DH.CreateSharedKey(InitiatorKey);
// Compute Keys
RtmfpUtils.ComputeAsymetricKeys(SharedSecret, InitiatorNonce, Nonce, out DecryptKey, out EncryptKey);
var pSession = _handshake?.CreateSession(Value);
if (pSession != null)
{
pSession.Peer.UserState = this;
}
}
public override void PacketHandler(N2HBinaryReader reader)
{
if (Checked)
{
lock (Writer)
{
base.PacketHandler(reader);
}
return;
}
var marker = reader.ReadByte();
if (marker != 0x0b)
{
Logger.FATAL("Marker hand shake wrong:should be 0b and not {0:X}", marker);
return;
}
var time = reader.ReadUInt16();
var type = reader.ReadByte();
var length = reader.ReadUInt16();
byte[] tag;
Logger.Debug("handshake {0:X} len:{1}", type, length);
Debug.WriteLine("handshake {0:X} len:{1}", type, length);
switch (type)
{
case 0x70:
tag = reader.ReadBytes(reader.ReadByte());
var cookieBytes = reader.ReadBytes(reader.ReadByte());
var targetCertificat = reader.ReadBytes((int)reader.BaseStream.GetAvaliableByteCounts());
var nonce = new byte[0];
_dh = RtmfpUtils.BeginDiffieHellman(ref nonce, true);
Peer.Id = Target.Sha256.ComputeHash(nonce, 0, nonce.Length);
HandShake38(cookieBytes, nonce);
_handshake = () => HandShake38(cookieBytes, nonce);
break;
case 0x71:
tag = reader.ReadBytes(reader.ReadByte());
var flag = reader.ReadByte();
var address = new IPEndPoint(new IPAddress(reader.ReadBytes(4)), reader.ReadInt16());
Target.Address.Port = address.Port;
Logger.Debug("redirect to {0}", address.ToString());
Handler.FarProtocol.IOHandler.Socket.Connect(Target.Address);
_handshake();
break;
case 0x78:
FarId = reader.ReadUInt32();
var targetNonce = reader.ReadBytes((int)reader.Read7BitLongValue());
var must58 = reader.ReadByte();
Debug.WriteLineIf(must58 != 0x58, $"must58!{must58}");
var key = new byte[RtmfpUtils.KEY_SIZE];
Buffer.BlockCopy(targetNonce, targetNonce.Length - RtmfpUtils.KEY_SIZE, key, 0, RtmfpUtils.KEY_SIZE);
var sharedSecret = _dh.CreateSharedKey(key);
byte[] decryptKey;
byte[] encryptKey;
RtmfpUtils.ComputeAsymetricKeys(sharedSecret, _certificat, targetNonce, out encryptKey, out decryptKey);
Checked = true;
_handshakeTimeoutTimer.Stop();
AesEncrypt = new AESEngine(encryptKey, AESEngine.Direction.ENCRYPT);
AesDecrypt = new AESEngine(decryptKey);
PrevAesType = AESEngine.AESType.DEFAULT;
Application = Handler.Application;
Handler.CreateSession(Peer, null);
break;
default:
break;
}
}