more progress :D

server/Program.cs

@@ -1,6 +1,8 @@
 using System;
+using System.IO;
 using System.Net;
 using System.Net.Sockets;
+using System.Security.Cryptography;
 
 namespace Server;
 
@@ -8,6 +10,11 @@ public class Program
 {
     static void Main(string[] args)
     {
+        // Generally this key would be static but since its not production yet we can generate it every time to make sure
+        // the users has the key and could load it from file
+        RSA key = RSA.Create(2048);
+        File.WriteAllText("server_key.pem", key.ExportRSAPublicKeyPem());
+
         int port = 12345;
         TcpListener server = new(IPAddress.Parse("0.0.0.0"), port);
         try {