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Message-ID: <4FDBA3CD.9070406@banquise.net>
Date: Fri, 15 Jun 2012 23:06:21 +0200
From: Simon Marechal <simon@...quise.net>
To: john-dev@...ts.openwall.com
Subject: Re: Re: [patch] optional new raw sha1 implemetation
On 06/15/2012 07:38 PM, Simon Marechal wrote:
> On my i7-3770, this code give between 15.8M and 16.2M c/s with gcc
> 4.6.3. The precompiled intrinsics code gives a consistent 16.5M. This is
> really good. I am downloading ICC and will try to port some tricks.
Finally managed to download and rebuilt everything with the latest icc
(this was a pain). The build did had to be fixed :
* it doesn't like the redefinition of _mm_testz_si128. I just commented
it out but a good #ifdef is required
* ASFLAGS needs to be overridden so that the compiler knows it should
use AVX and uses CPU_detect
should I do it and submit a patch or would magnum/jfoug do it himself ?
I suppose I can even just push it ...
The current SSE code cracks 19.8M c/s. Taviso's is faster at 21.3M c/s,
and doesn't use the register scheduling trick that is in
sse-intrinsics.c. This _might_ mean it could be faster.
Some of the improvements can't be moved to the intrinsics code as it
would break things, so it makes sense to keep it as is :
* reversing the last steps
* limiting the max password length
The code seems to be full on fun stuff however, and to be a good read.
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