Public bug reported:

Binary package hint: file-roller

Winzip and many other zip programs can now produce zip files that are
protected by 256 AES encryption.  FIle-roller in ubuntu cannot handle
these zips.  The files within the zips are shown fine but when you try
and extract the following error occurs:

skipping: Test.txt                unsupported compression method 99

I believe this is because "unzip" is used to extract the archive.  This is the 
output from "unzip":
[EMAIL PROTECTED]:~/Desktop$ unzip Test.zip 
Archive:  Test.zip
   skipping: Test.txt                unsupported compression method 99


If "7z" is used it works fine:
[EMAIL PROTECTED]:~/Desktop$ 7z x Test.zip 

7-Zip 4.51 beta  Copyright (c) 1999-2007 Igor Pavlov  2007-07-25
p7zip Version 4.51 (locale=en_GB.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)

Processing archive: Test.zip

Extracting  Test.txt
Enter password (will not be echoed) :

Everything is Ok

So I propose that file-roller uses "7z" instead of "unzip".

I attach an example of this kind of file.  The password is "monkey" (no
quotes).

Note peazip also can handle this.  Maybe a replacement for file-roller?

** Affects: file-roller (Ubuntu)
     Importance: Undecided
         Status: New

-- 
file-roller will not open 256 AES zip files
https://bugs.launchpad.net/bugs/220654
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