public byte[] EncryptAes(byte[] file, byte[] key)
        {
            try
            {
                using (RijndaelManaged myRijndael = new RijndaelManaged())
                {
                    myRijndael.Key = key;
                    myRijndael.IV = aesFile.IV;

                    //ICryptoTransform encryptor = myRijndael.CreateEncryptor(myRijndael.Key, myRijndael.IV);

                    using (var stream = new MemoryStream())
                    {
                        using (var encryptor = myRijndael.CreateEncryptor())
                        {
                            using (var encrypt = new CryptoStream(stream, encryptor, CryptoStreamMode.Write))
                            {
                                encrypt.Write(file, 0, file.Length);
                                encrypt.FlushFinalBlock();
                                return stream.ToArray();
                            }
                        }
                    }
                }
            }
            catch (CryptographicException e)
            {
                Console.WriteLine(e.Message)
            }
        }