public AssetBundleEncryptor(string planeAssetBundleDirPath, string encryptedAssetBundleDirPath, IEncryptionKey encryptionKey)
        {
            this.PlaneAssetBundleDirPath     = planeAssetBundleDirPath;
            this.EncryptedAssetBundleDirPath = encryptedAssetBundleDirPath;

            RijndaelManaged rijndael = Decryptor.CreateRijndael(encryptionKey);

            encryptor = rijndael.CreateEncryptor();
        }