Date: Wed, 31 Oct 2012 01:02:13 +0100 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: Office <=2003 format On 07/22/12 13:31, Rich Rumble wrote: > On Sun, Jul 22, 2012 at 7:06 AM, Dhiru Kholia <dhiru.kholia@...il.com> wrote: >> Rich, Thanks, that password worked. >> >> I have named the format "oldoffice". Attaching patch against >> magnum-jumbo branch. Please test the patch. >> >> Usage: >> >> 1. Run oldoffice2john.py on Office 97-2003 RC4 encryted documents. >> 2. Run john on the outpu of oldoffice2john.py > > I'll test now. I provided a lot additional info previously for a > crypto library M$ provides > http://www.openwall.com/lists/john-dev/2012/03/23/17 > I read all those resources a while ago, I think the library that is > provided is C# as opposed to C. But there are other useful blog posts > and insights I think there as well. Would a GPU speed things up? I > know there are several papers out there about FPGA's being a cheap and > very fast way to find the keys (not the password), I would think RC4 > is a pretty old/quick one by today's standards. > -rich > I am considering implementing oldoffice in OpenCL. This will be easy enough but I would prefer splitting it into two different formats - one for MD5 and another for SHA1. But what would I call them? When did they switch to SHA1? It seems all Office 2003 test files are using SHA1. magnum
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