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Posted to dev@poi.apache.org by bu...@apache.org on 2014/05/04 23:52:25 UTC

[Bug 56486] New: [PATCH] Add XOR obfuscation/decryption support to HSSF

https://issues.apache.org/bugzilla/show_bug.cgi?id=56486

            Bug ID: 56486
           Summary: [PATCH] Add XOR obfuscation/decryption support to HSSF
           Product: POI
           Version: 3.11-dev
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HSSF
          Assignee: dev@poi.apache.org
          Reporter: andreas.beeker@gmx.de

Created attachment 31589
  --> https://issues.apache.org/bugzilla/attachment.cgi?id=31589&action=edit
[PATCH] Add XOR obfuscation/decryption support to HSSF

This patch adds support for xor obfuscated Excel files.
Furthermore it modifies the RC4 classes to use the standard JCE implementation.
To document further changes, e.g. encryption support (not sure, if it makes
sense to support a nearly 20 year old obfuscation scheme (office 95 [1]/[2])
...), I opened a new bug entry - the original bug entry is #35897 

[1]
http://blogs.msdn.com/b/david_leblanc/archive/2008/07/03/office-crypto-follies.aspx
[2] https://eprint.iacr.org/2005/007.pdf

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[Bug 56486] [PATCH] Add XOR obfuscation/decryption support to HSSF

Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=56486

Andreas Beeker <an...@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Andreas Beeker <an...@gmx.de> ---
Applied with svn rel r1592636

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