Crypt

            string textToEncrypt = "هنا تضع نص السرفر";
            string encryptedText = "";
            foreach (int x in textToEncrypt)
            {
                if (x == 128)
                {
                    encryptedText = encryptedText + Convert.ToChar(x); // \x00
                    continue;
                }
                int y = (x + 128) % 256;
                encryptedText = encryptedText + Convert.ToChar(y);
            }