[Poppler-bugs] [Bug 24752] Fail to open encrypted PDF, which opens with Acrobat Reader.

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=24752





--- Comment #2 from Alberto González Palomo <alberto at matracas.org>  2009-10-30 00:19:57 PST ---
Is there some document I can read to learn how to add a new encryption scheme?

I don't have much time for this, and actually I just need to open the files
from that lecture so I can live with printing them to files from Acroreader,
but at least I would like to implement detection of this encoding scheme so
that we can print a more accurate error message, something like "this file is
encrypted using AES-256, which libpoppler does not support yet".

Then I would look into adding the AES-256 decoding.
Are AES-128 and AES-192 supported?

Having specific pointers to source files and documentation pages (PDF spec or
whatever) would greatly increase the odds of me being able to work on this. I
don't have time to learn this whole codebase and specifications.


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