82 lines
2.4 KiB
C#
82 lines
2.4 KiB
C#
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/*
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using System.Net;
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using System.Net.Sockets;
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using System.Security.Cryptography;
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using System.Text;
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_ = Task.Run(ServerWorker);
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_ = Task.Run(ClientWorker);
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await Task.Delay(-1);
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return;
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static async Task ClientWorker()
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{
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using var socket = new Socket(SocketType.Stream, ProtocolType.Tcp);
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await socket.ConnectAsync(new IPEndPoint(IPAddress.Loopback, 1234));
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using var aes = Aes.Create();
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aes.GenerateKey();
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aes.GenerateIV();
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await using var stream = new NetworkStream(socket);
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await using var crypto = new CryptoStream(stream, aes.CreateEncryptor(), CryptoStreamMode.Write, true);
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await using (var writer = new BinaryWriter(stream, Encoding.UTF8, true))
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{
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Console.WriteLine($"Client sending key: {BitConverter.ToString(aes.Key)}");
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Console.WriteLine($"Client sending IV: {BitConverter.ToString(aes.IV)}");
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// send key and iv unencrypted
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writer.Write(aes.Key.Length);
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writer.Write(aes.Key);
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writer.Write(aes.IV.Length);
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writer.Write(aes.IV);
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}
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await using (var writer = new BinaryWriter(crypto, Encoding.UTF8, true))
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{
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const string message = "Hello, world!";
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// send encrypted message
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Console.WriteLine($"Client sending message: {message}");
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writer.Write(message);
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}
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await crypto.FlushFinalBlockAsync();
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await Task.Delay(-1);
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}
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static async Task ServerWorker()
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{
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using var listener = new Socket(SocketType.Stream, ProtocolType.Tcp);
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listener.Bind(new IPEndPoint(IPAddress.Any, 1234));
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listener.Listen(1);
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using Socket client = await listener.AcceptAsync();
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await using var stream = new NetworkStream(client);
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using var aes = Aes.Create();
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using (var reader = new BinaryReader(stream, Encoding.UTF8, true))
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{
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int keyLength = reader.ReadInt32();
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aes.Key = reader.ReadBytes(keyLength);
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int ivLength = reader.ReadInt32();
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aes.IV = reader.ReadBytes(ivLength);
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Console.WriteLine($"Server received key: {BitConverter.ToString(aes.Key)}");
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Console.WriteLine($"Server received IV: {BitConverter.ToString(aes.IV)}");
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}
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await using var crypto = new CryptoStream(stream, aes.CreateDecryptor(), CryptoStreamMode.Read, true);
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using (var reader = new BinaryReader(crypto, Encoding.UTF8, true))
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{
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Console.Write("Server received message: ");
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Console.WriteLine(reader.ReadString());
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}
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await Task.Delay(-1);
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}
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*/
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