[Debian GNUstep maintainers] Bug#1095269: more info

[Yavor Doganov]

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.