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Date: Wed, 8 Jun 2011 20:56:16 +0400
From: Solar Designer <>
Subject: Re: adding PDF password cracking support to JtR [early alpha release]


On Thu, Jun 02, 2011 at 02:25:27PM -0700, Dhiru Kholia wrote:
> Here is a new version of the patch (also uploaded to wiki) which
> applies on top of john-1.7.7-jumbo-5. Thanks magnum for the quick
> review and porting to jumbo-5 help.

This is very nice.  As you know, I am merging this into -jumbo-6.

> $ ../run/john -test -format=pdf
> Benchmarking: pdf [32/64]... DONE
> Many salts:	12424 c/s real, 12424 c/s virtual
> Only one salt:	19659 c/s real, 19659 c/s virtual

In my testing, I am also getting slower speed for "many salts" (many PDF
files being cracked at once?) than for "one salt".  This suggests that
there's something wrong with the implementation.  Normally, these should
be either the same or "many salts" should be faster.

Nevertheless, this is not a blocker for inclusion in -jumbo-6.



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