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Message-ID: <4E023377.6090405@bredband.net>
Date: Wed, 22 Jun 2011 20:24:55 +0200
From: magnum <rawsmooth@...dband.net>
To: john-dev@...ts.openwall.com
Subject: mscash2 tag + iteration count
JimF has nailed the salt-length problem *without* using the OpenSSL
workaround and we are now finalizing some performance optimisations
(current boost is 17-18% on my gear!). I think it would be wise to
include the below change before releasing it:
The current mscash2 format (dcc2) use the same tagging (eg. in john.pot)
as the older mscash format (dcc1). I think this is a bad thing.
Furthermore, I believe the iteration count can be altered but it's
currently not stored with the hash but hard-coded (with a #define) in
mscash2_fmt.c.
- I propose we keep the old format for mscash (dcc1):
M$test1#64cd29e36a8431a2b111378564a10631
- I propose we use this new tag + iteration count for mscash2 (dcc2):
$DCC2$10240#test1#607bbe89611e37446e736f7856515bf8
We will probably be able to attack different iteration counts in the
same run.
Anyone agreeing or disagreeing on this?
magnum
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