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Date: Mon, 29 Apr 2013 21:29:39 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: revised incremental mode and charset files

On 29 Apr, 2013, at 21:06 , Alexander Cherepanov <cherepan@...me.ru> wrote:
> 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?

> 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.

Good catch. Here's a much worse case, using a real charset:

for i in 5-6 1-3 4 7; do ../run/john -stdout -inc:digits -min-len=5 -max-len=5 -node=$i/7 >/dev/null ; done
Node numbers 5-6 of 7
44563p 0:00:00:00 DONE (2013-04-29 21:25) 405118p/s 97443
Node numbers 1-3 of 7
47737p 0:00:00:00 DONE (2013-04-29 21:25) 433972p/s 68716
Node number 4 of 7
1p 0:00:00:00 DONE (2013-04-29 21:25) 9.090p/s 12345  <--- ouch!
Node number 7 of 7
7699p 0:00:00:00 DONE (2013-04-29 21:25) 69990p/s 58064

Ideally, 5-6 should be 31700, 1-3 should be 47600 and the rest should be 15872.

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