feat: wip network packet encryption

Engine.Integration/Engine.Integration.LiteNetLib/PacketCryptor.cs

@@ -0,0 +1,26 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Engine.Systems.Network;
+
+public class PacketCryptor // TODO performance improvements 
+{
+    private readonly Aes aes = null!;
+
+    private readonly ICryptoTransform encrpytor = null!;
+    private readonly ICryptoTransform decryptor = null!;
+
+    public byte[] Encrypt(byte[] data) => encrpytor.TransformFinalBlock(data, 0, data.Length);
+    public byte[] Decrypt(byte[] data) => decryptor.TransformFinalBlock(data, 0, data.Length);
+
+    public PacketCryptor(string key, string initializationVector)
+    {
+        aes = Aes.Create();
+
+        aes.Key = Encoding.UTF8.GetBytes(key);
+        aes.IV = Encoding.UTF8.GetBytes(initializationVector);
+
+        encrpytor = aes.CreateEncryptor();
+        decryptor = aes.CreateDecryptor();
+    }
+}