Crisis.Ionic.Zip.ZipEntry.ValidateEncryption C# (CSharp) Method

        internal void ValidateEncryption()
        {
            if (Encryption != EncryptionAlgorithm.PkzipWeak &&
#if AESCRYPTO
 Encryption != EncryptionAlgorithm.WinZipAes128 &&
                Encryption != EncryptionAlgorithm.WinZipAes256 &&
#endif
 Encryption != EncryptionAlgorithm.None)
            {
                // workitem 7968
                if (_UnsupportedAlgorithmId != 0)
                    throw new ZipException(String.Format("Cannot extract: Entry {0} is encrypted with an algorithm not supported by DotNetZip: {1}",
                                                         FileName, UnsupportedAlgorithm));
                else
                    throw new ZipException(String.Format("Cannot extract: Entry {0} uses an unsupported encryption algorithm ({1:X2})",
                                                         FileName, (int)Encryption));
            }
        }