Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Mon, 25 Jun 2012 00:19:22 +0200
From: newangels newangels <>
Subject: Re: dynamic formats tutorial


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




2012/6/24, cc <>:
> On Sun, Jun 24, 2012 at 5:04 PM, Solar Designer <> 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.
> -cc

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.