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Message-ID: <BLU0-SMTP343E3C9203D7343231279ABFDF00@phx.gbl>
Date: Sun, 10 Jun 2012 14:37:25 +0200
From: Frank Dittrich <frank_dittrich@...mail.com>
To: john-dev@...ts.openwall.com
Subject: Re: Patch: allow --markov=SECTION in addition to --markov[=[MIN_LEVEL-]LEVEL[:START[:END[:[MIN_LENGHT-]LENGTH]]]]
On 06/10/2012 02:20 PM, jfoug wrote:
>> From: Simon Marechal [mailto:simon@...quise.net]
>> run like this :
>>
>> -markov:300:0:1148673650879:24 -sess:markov0
>> -markov:300:1148673650879:2297347301758:24 -sess:markov1
>> -markov:300:2297347301758:3446020952637:24 -sess:markov2
>> -markov:300:3446020952637:4594694603516:24 -sess:markov3
>> -markov:300:4594694603516:5743368254395:24 -sess:markov4
>> -markov:300:5743368254395:0:24 -sess:markov5
>
> If I were going to use new logic, I would do it like this:
>
> [Markov:mybase]
> Statsfile = $JOHN/stats
> MkvLvl = 300
> MkvMaxLen = 24
>
> [Markov:m0]
> .include [Markov:mybase]
> MkvStart = 0
> MkvEnd = 1148673650879
>
> [Markov:m1]
> .include [Markov:mybase]
> MkvStart = 1148673650879
> MkvEnd = 2297347301758
>
> [Markov:m2]
[...]
> -markov:m0 -sess:markov0
> -markov:m1 -sess:markov1
Yes, this should work even with the current patch.
But it I understood Simon correctly, he wants to be able to calculate
start and end in a script, and also start the different markov sessions
from a script without the need to modify john.conf or another config file.
So, I'd like to make Simon (as the original author of Markov mode) happy
as well.
And I think this can be easily accomplished.
Sure, the number of options and variants when using Markov mode will
increase. But to efficiently use Markov mode, you'll have to read
doc/MARKOV anyway.
As long we don't break existing behavior (more than requiring the Markov
variables in john.conf to be specified in [Options:Markov] or in
[Markov:Default] instead of the global [Options] section), then I see no
problem.
Of course, the available options have to be well documented in doc/MARKOV.
Then, the current Markov mode usage
-markov[=[MIN_LEVEL-]LEVEL[:START[:END[:[MIN_LENGHT-]LENGTH]]]]
will just be extended to
-markov[=[SECTION:][MIN_LEVEL-]LEVEL[:START[:END[:[MIN_LENGHT-]LENGTH]]]]
Frank
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