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Date: Mon, 3 Sep 2012 20:17:30 +0200
From: magnum <>
Subject: Re: Cracking Office 2013 files with JtR

On 3 Sep, 2012, at 18:11 , Dhiru Kholia <> wrote:

> I have added support for cracking Office 2013 files to JtR (magnum-jumbo).
> Benchmark:
> ✗ ../run/john -fo:office -t
> Benchmarking: Office 2007/2010 SHA-1/AES [32/64]... DONE
> Raw:	38.6 c/s real, 38.6 c/s virtual

This benchmark is a mix of 2007/2010/2013 test vectors, right?

> AFAIK, JtR might be the first software to support cracking Office 2013
> files (at least Passware doesn't).

Cool. Sounds like a candidate for a tweet!

> Note: To be really usable, we need an OpenCL implementation. magnum, Lukas?

I could give it a shot. I gets complicated as you support three different types in one format (although that's easier for the user).

So 2013 is SHA512 + AES and 2010 is SHA1 + AES, right? And, um... 2007 is also SHA1 + AES but using another scheme? I could start with 2007/2010 I guess.


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