static void Main(string[] args) { if (0 == args.Length) { Console.WriteLine("Usage: pkg_decrypt <.pkg>"); return; } PKGDecrypt decryptor = new PKGDecrypt(); string decryptedPkg = decryptor.DecryptPKGFile(args[0]); if (null != decryptedPkg && string.Empty != decryptedPkg) { decryptor.ExtractFiles(decryptedPkg, args[0]); } }