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Date: Mon, 29 Apr 2013 23:06:41 +0400
From: Alexander Cherepanov <cherepan@...me.ru>
To: john-dev@...ts.openwall.com
Subject: Re: revised incremental mode and charset files

On 2013-04-29 07:47, Solar Designer wrote:
> Not necessarily that.  For example, two of the bugs (now fixed) would
> show up with smaller rather than larger settings - in particular, when
> having very little input data in john.pot from which a .chr file was
> generated.

There is an asymmetry in a number of password generated in some cases. 
Is it expected?

Let's take one letter:

----------------------------------------------------------------------

$ echo ':a' > john.pot
$ ./john --make-charset=all.chr
Loaded 1 plaintext
Generating charsets........................ DONE
Generating cracking order..- Stable order (3 recalculations)
Successfully wrote charset file: all.chr (1 character)
$ ./john --incremental --stdout
Warning: only 1 characters available

a
aa
aaa
aaaa
aaaaa
aaaaaa
aaaaaaa
aaaaaaaa
9p 0:00:00:00 900.0p/s aaaaaaaa
$ ./john --incremental --stdout --node=1/2
Node number 1 of 2
Warning: only 1 characters available
aa
aaaaa
aaaaaa
3p 0:00:00:00 300.0p/s aaaaaa
$ ./john --incremental --stdout --node=2/2
Node number 2 of 2
Warning: only 1 characters available

a
aaa
aaaa
aaaaaaa
aaaaaaaa
6p 0:00:00:00 600.0p/s aaaaaaaa

----------------------------------------------------------------------

So there is 3/6 distribution between nodes. If I add another letter I 
get 392/119 distribution. If I additionally set MinLen = 8 in john.conf 
I get 244/12 distribution.

-- 
Alexander Cherepanov

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