static void Main(string[] args) { OutputEncoding = System.Text.Encoding.UTF8; string sentence = "BSUIR135"; DESCrypto cipher = new DESCrypto(); string key = "12345678"; string encodedText = cipher.Encode(sentence, key); WriteLine($"Encode: {encodedText}"); string decodedText = cipher.Decode(encodedText, key); WriteLine($"Decode: {decodedText}"); ReadKey(); }