public static int Main(string[] args) { if (args is null || args.Length < 4) { return(-1); } try { if (args[0].Equals("decode")) { var cipher = args[1].Split(',').Select(byte.Parse).ToArray(); var key = args[2].Split(',').Select(byte.Parse).ToArray(); var iv = args[3].Split(',').Select(byte.Parse).ToArray(); var result = Decryptor.DecryptAndGetBytes(cipher, key, iv); Console.WriteLine(string.Join(", ", result)); return(0); } if (args[0].Equals("encode")) { var original = args[1]; var key = args[2].Split(',').Select(byte.Parse).ToArray(); var iv = args[1].Split(',').Select(byte.Parse).ToArray(); var result = Encryptor.Encrypt(original, key, iv); Console.WriteLine(string.Join(", ", result)); return(0); } Console.WriteLine("Wrong mode"); return(-1); } catch { Console.WriteLine("Wrong args"); return(-1); } }