private void HandshakeWorker_DoWork(object sender, DoWorkEventArgs e)
{
IPEndPoint a = new IPEndPoint(IPAddress.Any, 1);
localPair = PublicKeyBox.GenerateKeyPair();
var message = Encoding.ASCII.GetBytes("Key");
message = message.Concat(randomID)
.Concat(localPair.PublicKey)
.Concat(Encoding.ASCII.GetBytes(name))
.ToArray();
socket.Send(message, message.Length);
var response = socket.Receive(ref a);
if (Encoding.ASCII.GetString(response.Take(3).ToArray()) != "Key" || response.Length != 35)
{
HandshakeWorker.ReportProgress(2);
return;
}
remotePublicKey = response.Skip(3).Take(32).ToArray();
message = Encoding.ASCII.GetBytes("Ses").Concat(randomID).ToArray();
socket.Send(message, message.Length);
response = socket.Receive(ref a);
if (Encoding.ASCII.GetString(response.Take(3).ToArray()) != "AOk" || response.Length != 7)
{
HandshakeWorker.ReportProgress(2);
return;
}
sessionID = response.Skip(3).Take(4).ToArray();
HandshakeWorker.ReportProgress(1);
}
public HandshakeDialog(UdpClient socket, IPEndPoint endpoint, string name)
{
InitializeComponent();
this.socket = socket;
this.socket.Connect(endpoint);
randomID = new byte[8];
(new RNGCryptoServiceProvider()).GetBytes(randomID);
this.name = name;
this.endpoint = endpoint;
HandshakeWorker.RunWorkerAsync();
}
