Default encryption when adding to zipfile

[Hogedal]

I am in need of finding out what type of encryption is used when adding files to a Zipfile object with a password set.

Alternatively, I have the code shown below, is there any alternative way of adding files that I am missing which would allow me to specify an AES key length?

using (ZipFile zip = ZipFile.Create($"{archiveOutputFolder}\\{pack.Name}.zip"))
{
    zip.BeginUpdate();
    zip.Password = _cryptKey;
    foreach (var file in pack.Files)
    {
        zip.Add(new StaticDiskDataSource(file.Info.FullName), file.RelativeFilePath, CompressionMethod.Stored);
    }               
    zip.CommitUpdate();
    zip.Close();
    return zip.Name;
}

[piksel]

ZipFile doesn't support adding files with AES encryption. But you can use ZipOutputStream instead:

using(var zipStream = new ZipOutputStream(File.Create($"{archiveOutputFolder}\\{pack.Name}.zip")))
{
    zipStream.Password = _cryptKey;
    foreach (var file in pack.Files)
    {
        var entry = new ZipEntry(file.RelativeFilePath);
        entry.AESKeySize = 256;
        
        zipStream.PutNextEntry(entry);
        using(var sourceStream = File.OpenRead(file.Info.FullName)) 
        {
            sourceStream.CopyTo(zipStream);
        }
    }
}

[Hogedal]

Thanks, I will try that.