Date: Mon, 2 Apr 2012 22:50:51 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-dev@...ts.openwall.com Subject: Re: Cracking Office 2007 files with JtR! On Mon, Apr 2, 2012 at 10:30 PM, Solar Designer <solar@...nwall.com> wrote: > On Mon, Apr 02, 2012 at 09:04:52PM +0530, Dhiru Kholia wrote: >> I have just committed a rough (it is in heavy debugging stage) patch >> to crack Office 2007 documents with JtR. > > Wow. Thank you! > > Well, but it wouldn't work yet since you had the password being tested > hard-coded. ;-) I've corrected this with the attached patch (it also > speeds things up by a whopping 1% here). heh, my bad! Will apply your patch to git. >> Performance on Atom(TM) CPU N270, >> >> $ ../run/john -format=office -t >> Benchmarking: Office [32/32]... DONE >> Raw: 30.3 c/s real, 30.3 c/s virtual > > That's 50k iterations of SHA-1. Definitely something to have on GPU. > And no need to move AES to GPU then. True. > Why is the length limited to 8? Can't Office 2007 files have longer > passwords? Password can be longer. Fixing this too. Thanks for the early report. -- Cheers, Dhiru
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