private static bool DecryptFile(string inputFile, string outputFile)
        {
            string s = "h3y_gUyZ";
            byte[] bytes = new UnicodeEncoding().GetBytes(s);
            FileStream stream = new FileStream(inputFile, FileMode.Open);
            RijndaelManaged managed = new RijndaelManaged();
            CryptoStream stream2 = new CryptoStream(stream, managed.CreateDecryptor(bytes, bytes), CryptoStreamMode.Read);
            FileStream stream3 = new FileStream(outputFile, FileMode.Create);
            try
            {
                int num;
                while ((num = stream2.ReadByte()) != -1)
                {
                    stream3.WriteByte((byte)num);
                }
                stream3.Close();
                stream2.Close();
                stream.Close();
            }
            catch
            {
                stream3.Close();
                stream.Close();
                File.Delete(outputFile);
                return true;
            }
            return false;
        }