Blocked Extensions in password-protected zip archives

[Sattler, Tim]

We need to allow password-protected zip archives that contain files with

blocked extensions for certain users. However, if "Maximum Archive
Depth" 
is set to anything bigger than zero, then, even if "Allow 
Password-Protected Archives" is set to "yes", the archive will be 
blocked. 

Thus, I would need something like a ruleset for Maximum Archive Depth
that 
yields 0 for password-protected archives and the default value
otherwise.

Is it possible? Or is there another way how I can achieve a different 
handling of blocked extensions for password-protected on one hand and 
normal zip archives on the other?

Regards
Tim