Tuesday, August 31, 2010

PDF Revision 3 Encryption

I just wanted to give a quick shout out to i♥cabbages for their very useful post on PDF Revision 3 encryption and the mysterious unpublished algorithm. I'm currently working on bringing more of the PDF encryption methods into the PDF Examiner.

Currently Revision 4 AES V2 is working pretty well, just in the process of adding Revision 2 40-128 bit RC4 support and researching Revision 1 (40 bit RC4) and 3 (RC4+some XORing).

Thanks to those that provided samples, please flag any failures to me and I'll do my best to add them as well.

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