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Message-ID: <20070312233731.GA32537@openwall.com>
Date: Tue, 13 Mar 2007 02:37:31 +0300
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: New NT patch
Alain,
On Mon, Mar 12, 2007 at 11:51:43PM +0100, Alain Espinosa wrote:
> On 3/10/07, Solar Designer <solar@...nwall.com> wrote:
> >
> >I took the liberty to release (in contrib/ and linked from the web page)
> >a "revision 5.1" instead. This is essentially your -5 without SSE2 code
> >(since you've mentioned that it has a nasty known bug) and with split()
> >added to address the problem pointed out by Frank (it did apply - I have
> >a test case).
>
> What means "with split() added to address the problem pointed out by Frank
> (it did apply - I have a test case). " ???
It means that I've added a new function named split() to your code in
revision 5.1 - please download it and see for yourself. I am assuming
that you will integrate this in your revision 6. To test for the
problem with your revision 5 and see how it is resolved in 5.1, please
use pw-lm-ntlm-mixedcase.gz (a file that I've provided to you privately).
The problem is described here:
http://www.openwall.com/lists/john-users/2007/03/07/7
http://www.openwall.com/lists/john-users/2005/12/17/2
Also relevant is this comment on split() in src/formats.h:
* For hex-encoded hashes which are compared by the target system/application
* irrespective of the case of characters (upper/lower/mixed) used in their
* encoding, split() must unify the case (e.g., convert to all-lowercase)
* and FMT_SPLIT_UNIFIES_CASE must be set. */
Oh, I forgot to add FMT_SPLIT_UNIFIES_CASE - please add it and test with
pw-lm-ntlm-mixedcase.gz again. This should only affect the --show option,
which I neglected to test with pw-lm-ntlm-mixedcase.gz for revision 5.1.
Thanks,
--
Alexander Peslyak <solar at openwall.com>
GPG key ID: 5B341F15 fp: B3FB 63F4 D7A3 BCCC 6F6E FC55 A2FC 027C 5B34 1F15
http://www.openwall.com - bringing security into open computing environments
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