using (ICryptoTransform encryptor = rj.CreateEncryptor())
                {
                    using (MemoryStream ms = new MemoryStream(originalFileData.Length)) {
                        using (CryptoStream cs = new CryptoStream( ms, encryptor,CryptoStreamMode.Write )) {
                            using(BinaryWriter bw = new BinaryWriter( cs )) {
                                bw.Write( originalFileData );
                                bw.Flush();
                                encryptedGzippedFile = new byte[ms.Length];
                                ms.Seek(0, SeekOrigin.Begin);
                                ms.Read(encryptedGzippedFile, 0, (int)ms.Length);
                            }
                        }


                    }
                    originalFileData = null;
                }