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Date: Wed, 23 Feb 2011 12:59:05 +0100
From: Samuele Giovanni Tonon <>
Subject: Re: rawsha1 e NSLDAPS jumbo 12 opencl patch

On 02/23/11 01:22, Solar Designer wrote:
> Samuele,
> On Tue, Feb 22, 2011 at 09:55:52PM +0100, Samuele Giovanni Tonon wrote:
>> attached here a patch for jumbo12 to add rawsha1 and NSLDAPS formats
>> cracking with opencl.
> That's very nice, but I am puzzled why you don't focus on slower hashes
> first, where the efficiency will be much greater?

well i tried nsldaps since i've already had sha1 cl code and i was
curious about seeing what happens on a salted hash instead of raw.
>> With a salted hash opencl was able to go 2x time faster than original:
> I suspect that Simon's SSE2 intrinsics patch will outperform your OpenCL
> implementation...  Perhaps try it for a "fair" comparison?  That's
> john-1.7.6-jumbo-12-intrinsics-2 on the wiki:
sure! I applied that patch as well as the one simon sent this morning
to a jumbo12 vanilla and compiled with "make linux-x86-64"
(don't have icc and make linux-x86-64-clang gave me some
i don't know if intrinsic only works with either icc/clang i suspect
so since i got this:

./john -rules --format=salted-sha -w=/public/crack/00_varie password
Loaded 7554 password hashes with 7554 different salts (Salted SHA [SHA-1])
guesses: 0  time: 0:00:10:15 6.28% (ETA: Wed Feb 23 14:54:59 2011)  c/s:
5575K  trying: panspermias - pansylikes

./john -i:all --format=salted-sha /tmp/password
Loaded 7553 password hashes with 7553 different salts (Salted SHA [SHA-1])
guesses: 0  time: 0:00:10:11  c/s: 5573K  trying: dake00 - dake23

maybe i'm doing wrong .


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