Crisis.Ionic.Zip.ZipEntry.GetExtractDecryptor C# (CSharp) Метод

        internal Stream GetExtractDecryptor(Stream input)
        {
            Stream input2 = null;
            if (_Encryption_FromZipFile == EncryptionAlgorithm.PkzipWeak)
                input2 = new ZipCipherStream(input, _zipCrypto_forExtract, CryptoMode.Decrypt);

#if AESCRYPTO
            else if (_Encryption_FromZipFile == EncryptionAlgorithm.WinZipAes128 ||
                 _Encryption_FromZipFile == EncryptionAlgorithm.WinZipAes256)
                input2 = new WinZipAesCipherStream(input, _aesCrypto_forExtract, _CompressedFileDataSize, CryptoMode.Decrypt);
#endif

            else
                input2 = input;

            return input2;
        }