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Date: Mon, 25 Jun 2012 00:19:22 +0200
From: newangels newangels <contact.newangels@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: dynamic formats tutorial

Alexander,

Awesome share link ! exactly what i search & need for OpenMP on Mac.

THANK YOU

Regards,

Donovan


2012/6/24, cc <cc@...heads.com>:
> On Sun, Jun 24, 2012 at 5:04 PM, Solar Designer <solar@...nwall.com> wrote:
>> Yet I think this is valuable, hence the posting.  In fact, as I said
>> before, I'd appreciate it if folks announce their JtR-related blog posts
>> and such in here.
>
> I recently put together a hack to use JtR in a distributed fashion -
> pre-dividing the keyspace and using a cgi program to distribute work
> units to the workers.  Each client gets a unit of work and the
> currently uncracked hashes (this means that, for salted hashes, units
> get faster as the salts get reduced).
>
> It's currently a dumb brute force because I wanted to use it quickly,
> and the overhead of pre-dividing Incremental was too high.  I've been
> able to speed it up since, but it's still quite large (months to
> generate) - as long as you have a small number of worker cores (~10)
> they get starved out by unit generation.  Thus brute force - which
> takes a few seconds to divide the keyspace into ranges.  (The keyspace
> division only needs to be done once for a given unit size, so if
> anybody has "entry, length, fixed, count, numbers[0-8]" snapshots that
> divide the entire keyspace into ~100-300k chunks that would be really
> helpful).  I was originally going to make in an External mode but I
> needed numbers bigger than maxint, so it uses --stdin.
>
> Anyway the usual caveats apply, your mileage may vary, etc.  It works
> well if you have more heterogeneous compute than patience to optimize
> guesses.
>
> https://github.com/ccdes/brutus
>
>
> -cc
>

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