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Date: Sun, 12 Feb 2017 18:33:20 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: to Single or not to Single
On 2017-02-12 09:32, Patrick Proniewski wrote:
> Hi,
>
> Should I try and write a bug report about this on github?
>
> regards
> patpro
Please do, or we will forget. Jim has little time right now.
magnum
> On 05 févr. 2017, at 09:26, Patrick Proniewski wrote:
>
>> On 04 févr. 2017, at 21:33, Solar Designer wrote:
>>
>>> That said, I think it'd be even better to figure out and fix whatever
>>> issue is causing the extremely poor performance, and then you won't have
>>> to worry about those extra candidates being tested - in fact, you'd want
>>> more of them to be tested.
>>
>> I do agree.
>> I've made another test, that probably compares with the --test function. I've ran this:
>>
>> time ./john --single=None --nolog --verbosity=1 aa-postsingle --pot=dummy3.pot
>> Using default input encoding: UTF-8
>> Loaded 1395762 password hashes with 1395762 different salts (dynamic_25 [sha1($s.$p) 128/128 AVX 4x1])
>> Press 'q' or Ctrl-C to abort, almost any other key for status
>> 0g 0:00:00:03 50.00% (ETA: 21:44:44) 0g/s 0p/s 0c/s 0C/s
>> 0g 0:00:00:04 50.00% (ETA: 21:44:46) 0g/s 407283p/s 407283c/s 407283C/s messershre
>> 0g 0:00:00:04 DONE (2017-02-04 21:44) 0g/s 477983p/s 477983c/s 477983C/s rolltide1!..rrolltide1!
>> Session completed
>>
>>
>> real 0m13.070s
>> user 0m10.627s
>> sys 0m2.391s
>>
>> where "aa-postsingle" is a file containing only hashes remaining after the end of a --single=None run. To sum it up, it contains only hashes that wont be cracked by the given candidate. No super-fast, but really good compared to files with a mix of good and bad candidates.
>>
>> So it looks like it's really the mix of good and bad candidates that impact performance.
>>
>> patpro
>
>
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