ZenWalker wrote: > 7z documentation: > > https://documentation.help/7-Zip/method.htm
Thanks; that's not available in the Debian package, I think. It's also impossible for me to read or understand. There's no mem option AFAICS with listed allowed parameters. But nevermind. > seems the default is ZipCrypto So the AES-256 fanfares at their website are slightly misleading. > unar works if the file is compressed with: > > $ 7z a -mem=ZipCrypto -tzip -p1234 foo.zip bar baz > $ 7z a -tzip -p1234 foo.zip bar baz Yes, I tried the second invocation. > and unar fails if the file is compressed with: > > $ 7z a -mem=AES128 -tzip -p1234 foo.zip bar baz > $ 7z a -mem=AES192 -tzip -p1234 foo.zip bar baz > $ 7z a -mem=AES256 -tzip -p1234 foo.zip bar baz OK, thanks for the info. I'll look into this when I find some time. Would appreciate if you report it upstream as well.