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Date: Tue, 2 Aug 2011 15:47:18 +0400
From: Solar Designer <>
Subject: Re: invitation to team john-users in KoreLogic's "Crack Me If You Can" DEFCON 2011 contest


On Tue, Aug 02, 2011 at 03:32:58PM +0400, Aleksey Cherepanov wrote:
> It is possible that I will have access to my parents's computer
> (Core i7-950/12Gb/2Tb) during this week. This computer is rather unused now.
> It has public ip. I am not sure about my skills. Could I help you providing
> with ssh login? How should I set this computer up?

I'd prefer that you manage it on your own - that way, you'll be more
involved and you'll contribute your time rather than CPU time only.
This contest is by far not only about CPU/GPU time, but also about
people's skills and creative thinking.  There are challenges prepared
for us by the KoreLogic folks.  A computer alone won't solve those.

If you feel your use of the machine would be too unoptimal, then maybe
provide access to another member of our team - not necessarily to me.

For the software setup, I recommend that you install any Linux distro
built for x86-64 - or boot off a LiveCD (must have working gcc and
libraries sufficient to build JtR).  If the machine has an NVidia GPU,
consider Yellow Dog Linux for CUDA (also available as LiveDVD):

Then you'll be able to use Lukas' patches for faster SHA-crypt, phpass,
and MD5-crypt.


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