static void anonym_peer()
{
IPAddress ipAddress = IPAddress.Parse(local_ip);
IPEndPoint ipLocalEndPoint = new IPEndPoint(ipAddress, local_port);
//Connect to server
TcpClient client = new TcpClient(ipLocalEndPoint);
client.Connect(server_ip, server_port);
SslStream sslStream = new SslStream(client.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);
authenticate_server(sslStream);
TCPCommunication.send_message_tcp(sslStream, "ANONYM_P");
TCPCommunication.send_message_tcp(sslStream, HashString.GetHashString(pubKey.ToString()));
string response = TCPCommunication.recieve_message_tcp(sslStream);
if (String.Compare(response, "ACCEPT") == 0)
{
node = new ECDiffieHellmanOpenSsl();
ECParameters node_ep = node.ExportParameters(false);
pubKey = new PublicKeyCoordinates(node_ep.Q.X, node_ep.Q.Y);
string hash = HashString.GetHashString(pubKey.ToString());
TCPCommunication.send_message_tcp(sslStream, hash);
response = TCPCommunication.recieve_message_tcp(sslStream);
Console.WriteLine(response);
sslStream.Close();
client.Close();
}
else if (String.Compare(response, "REJECT") == 0)
{
Console.WriteLine("Connection rejected");
sslStream.Close();
client.Close();
}
}
static void init_connection(SslStream sslStream)
{
//Authenticate certificate
authenticate_server(sslStream);
TCPCommunication.send_message_tcp(sslStream, "INIT_P");
string response = TCPCommunication.recieve_message_tcp(sslStream);
Console.WriteLine(response);
node = new ECDiffieHellmanOpenSsl();
ECParameters node_ep = node.ExportParameters(false);
pubKey = new PublicKeyCoordinates(node_ep.Q.X, node_ep.Q.Y);
Console.WriteLine("My hash key: " + HashString.GetHashString(pubKey.ToString()));
//Console.WriteLine(pubKey.ToString());
TCPCommunication.send_message_tcp(sslStream, pubKey.ToString());
}
static void listen_connection(SslStream sslStream, TcpClient client)
{
myAes = Aes.Create();
myAes.Key = new byte[16] {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16
};
myAes.IV = new byte[16] {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
TCPCommunication.send_message_tcp(sslStream, "LISTEN_P");
TCPCommunication.send_message_tcp(sslStream, HashString.GetHashString(pubKey.ToString()));
string response = TCPCommunication.recieve_message_tcp(sslStream);
if (String.Compare(response, "ACCEPT") == 0)
{
byte[] data = new Byte[256];
data = Encoding.UTF8.GetBytes(pubKey.ToString());
sslStream.Write(data);
sslStream.Flush();
data = new Byte[256];
sslStream.Read(data, 0, data.Length);
response = Encoding.UTF8.GetString(data);
PublicKeyCoordinates request_key = JsonConvert.DeserializeObject <PublicKeyCoordinates>(response);
sslStream.Close();
client.Close();
ECDiffieHellmanOpenSsl temp = new ECDiffieHellmanOpenSsl();
ECParameters epTemp = temp.ExportParameters(false);
epTemp.Q.X = request_key.X;
epTemp.Q.Y = request_key.Y;
ECDiffieHellmanPublicKey servePubKey = ECDiffieHellman.Create(epTemp).PublicKey;
byte[] sharedKey = node.DeriveKeyMaterial(servePubKey);
Console.WriteLine(BitConverter.ToString(sharedKey).Replace("-", ""));
//myAes.Key = sharedKey;
//myAes.Key = new byte[16] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
DTLSClient dtls_client = new DTLSClient(server_ip, server_port.ToString(), new byte[] { 0xBA, 0xA0 });
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
dtls_client.Unbuffer = "winpty.exe";
dtls_client.Unbuffer_Args = "-Xplain -Xallow-non-tty";
}
else
{
dtls_client.Unbuffer = "stdbuf";
dtls_client.Unbuffer_Args = "-i0 -o0";
}
dtls_client.Start();
/* statpair IOStream = new statpair(new StreamReader(Console.OpenStandardInput()), new StreamWriter(Console.OpenStandardOutput()));
* new Thread(() => dtls_client.GetStream().CopyTo(IOStream, 16)).Start();*/
read_relay(dtls_client);
/*while(true)
* {
* string input = Console.ReadLine();
* byte[] encryptedData = EncryptStringToBytes_Aes(input, myAes.Key, myAes.IV);
* dtls_client.GetStream().Write(encryptedData);
* //dtls_client.GetStream().Write(Encoding.Default.GetBytes(input+Environment.NewLine));
* }*/
dtls_client.WaitForExit();
}
else if (String.Compare(response, "REJECT") == 0)
{
Console.WriteLine("Connection rejected");
sslStream.Close();
client.Close();
}
}
static void req_connection(SslStream sslStream, TcpClient client, string dest_key)
{
myAes = Aes.Create();
myAes.Key = new byte[16] {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16
};
myAes.IV = new byte[16] {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
TCPCommunication.send_message_tcp(sslStream, "CONNECT_P");
TCPCommunication.send_message_tcp(sslStream, HashString.GetHashString(pubKey.ToString()));
string response = TCPCommunication.recieve_message_tcp(sslStream);
if (String.Compare(response, "ACCEPT") == 0)
{
TCPCommunication.send_message_tcp(sslStream, dest_key);
response = TCPCommunication.recieve_message_tcp(sslStream);
Console.WriteLine(response);
if (String.Compare(response, "ACCEPT") == 0)
{
response = TCPCommunication.recieve_message_tcp(sslStream);
int dtls_port = Int32.Parse(response);
byte[] data = new Byte[256];
data = Encoding.UTF8.GetBytes(pubKey.ToString());
sslStream.Write(data);
sslStream.Flush();
data = new Byte[256];
sslStream.Read(data, 0, data.Length);
response = Encoding.UTF8.GetString(data);
PublicKeyCoordinates listen_key = JsonConvert.DeserializeObject <PublicKeyCoordinates>(response);
sslStream.Close();
client.Close();
ECDiffieHellmanOpenSsl temp = new ECDiffieHellmanOpenSsl();
ECParameters epTemp = temp.ExportParameters(false);
epTemp.Q.X = listen_key.X;
epTemp.Q.Y = listen_key.Y;
ECDiffieHellmanPublicKey servePubKey = ECDiffieHellman.Create(epTemp).PublicKey;
byte[] sharedKey = node.DeriveKeyMaterial(servePubKey);
Console.WriteLine(BitConverter.ToString(sharedKey).Replace("-", ""));
//myAes.Key = sharedKey;
//myAes.Key = new byte[16] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
DTLSClient dtls_client = new DTLSClient(server_ip, dtls_port.ToString(), new byte[] { 0xBA, 0xA0 });
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
dtls_client.Unbuffer = "winpty.exe";
dtls_client.Unbuffer_Args = "-Xplain -Xallow-non-tty";
}
else
{
dtls_client.Unbuffer = "stdbuf";
dtls_client.Unbuffer_Args = "-i0 -o0";
}
dtls_client.Start();
/*statpair IOStream = new statpair(new StreamReader(Console.OpenStandardInput()), new StreamWriter(Console.OpenStandardOutput()));
* new Thread(() => dtls_client.GetStream().CopyTo(IOStream, 16)).Start();*/
//new Thread(() => read_relay(dtls_client)).Start();
UdpClient receivingUdpClient = new UdpClient(32000);
//Creates an IPEndPoint to record the IP Address and port number of the sender.
// The IPEndPoint will allow you to read datagrams sent from any source.
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
/*Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
*
* IPAddress broadcast = IPAddress.Parse("127.0.0.1");
*
* //byte[] sendbuf = Encoding.ASCII.GetBytes(args[0]);
* IPEndPoint ep = new IPEndPoint(broadcast, 11000);*/
dtls_client.GetStream().Write(Encoding.Default.GetBytes("SUCCESS\n"));
dtls_client.GetStream().Write(Encoding.Default.GetBytes("SUCCESS\n"));
//dtls_client.GetStream().Write(Encoding.Default.GetBytes("SUCCESS"));
while (true)
{
byte[] receiveBytes = receivingUdpClient.Receive(ref RemoteIpEndPoint);
//dtls_client.GetStream().Write(receiveBytes);
//dtls_client.GetStream().Flush();
string input = BitConverter.ToString(receiveBytes) + '\n';
//Console.WriteLine(input);
byte[] send = Encoding.Default.GetBytes(input);
//Console.WriteLine(receiveBytes);
dtls_client.GetStream().Write(send);
//Thread.Sleep(50);
//byte[] rec = Encoding.Default.GetBytes(cut_str);
//Console.WriteLine(bytes);
//s.SendTo(bytes, ep);
//dtls_client.GetStream().Write(Encoding.Default.GetBytes(input));
/*string input = Encoding.Default.GetString(receiveBytes);
*
* byte[] send = Encoding.Default.GetBytes(input);
*
* s.SendTo(send, ep);*/
/*byte[] out_byte = Encoding.Default.GetBytes(input);
*
* string out_str = Encoding.Default.GetString(out_byte);
*
* String[] arr=out_str.Split('-');
* byte[] bytes=new byte[arr.Length];
* for(int i=0; i<arr.Length; i++) bytes[i]=Convert.ToByte(arr[i],16);
*
* s.SendTo(bytes, ep);*/
/*String[] arr=input.Split('-');
* byte[] bytes=new byte[arr.Length];
* for(int i=0; i<arr.Length; i++) bytes[i]=Convert.ToByte(arr[i],16);*/
/*String[] arr_in=input.Split('-');
* byte[] array_in=new byte[arr.Length];
* for(int i=0; i<arr.Length; i++) array[i]=Convert.ToByte(arr[i],16);
*
* string out_str = BitConverter.ToString(out_bt);
*
* String[] arr=out_str.Split('-');
* byte[] bytes=new byte[arr.Length];
* for(int i=0; i<arr.Length; i++) bytes[i]=Convert.ToByte(arr[i],16);
*
* //byte[] bytes = BitConverter.GetBytes(input);
*
* s.SendTo(bytes, ep);*/
//string input = BitConverter.ToString(receiveBytes);
//byte[] encryptedData = EncryptStringToBytes_Aes(BitConverter.ToString(receiveBytes), myAes.Key, myAes.IV);
//dtls_client.GetStream().Write(encryptedData);
//dtls_client.GetStream().Write(receiveBytes);
//dtls_client.GetStream().Write(bytes);
//dtls_client.GetStream().Write();
}
dtls_client.WaitForExit();
}
else if (String.Compare(response, "REJECT") == 0)
{
Console.WriteLine("Connection rejected");
}
}
else if (String.Compare(response, "REJECT") == 0)
{
Console.WriteLine("Connection rejected");
sslStream.Close();
client.Close();
}
}
