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Bug 529395 - file-roller will not open 256 AES zip files
file-roller will not open 256 AES zip files
Status: RESOLVED FIXED
Product: file-roller
Classification: Applications
Component: general
2.20.x
Other All
: Normal normal
: ---
Assigned To: Paolo Bacchilega
file-roller-maint
Depends on:
Blocks:
 
 
Reported: 2008-04-22 16:19 UTC by Daniel Brewer
Modified: 2008-06-19 15:14 UTC
See Also:
GNOME target: ---
GNOME version: 2.19/2.20


Attachments
Here is a test256 AES zip. Password=monkey (179 bytes, text/plain)
2008-04-22 16:20 UTC, Daniel Brewer
Details

Description Daniel Brewer 2008-04-22 16:19:47 UTC
Please describe the problem:
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":
dbrewer@HCC122J:~/Desktop$ unzip Test.zip
Archive: Test.zip
   skipping: Test.txt unsupported compression method 99

If "7z" is used it works fine:
dbrewer@HCC122J:~/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".

Steps to reproduce:
1. Double-click on a 256 AES zip
2. Double-click on one of the files in the archive



Actual results:
An error occurs with the following message:
skipping: Test.txt unsupported compression method 99

Expected results:
To ask for a password an unzip the file

Does this happen every time?
Yes

Other information:
Comment 1 Daniel Brewer 2008-04-22 16:20:33 UTC
Created attachment 109702 [details]
Here is a test256 AES zip.  Password=monkey
Comment 2 Paolo Bacchilega 2008-06-19 15:14:32 UTC
This problem has been fixed in the development version. The fix will be available in the next major software release. Thank you for your bug report.