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Date: Mon, 4 Jan 2016 14:34:59 +0100
From: patpro@...pro.net
To: john-users@...ts.openwall.com
Subject: Re: limiting password candidates in wordlist mode

On 4 janv. 2016, at 14:07, magnum <john.magnum@...hmail.com> wrote:

> On 2016-01-04 14:02, patpro@...pro.net wrote:
>> I would like to filter or limit password candidates while using wordlist mode attack, but I'm not so sure about the best way to do this.
>> External filter option helped me with filters such as Alnum for example, and it worked great, but I would like now to limit candidates only by their size: ie. test only passwords from 10 to 12 characters long (any characters, not just alnum).
>> I'm using many rules (rules=ALL on JtR-Jumbo), so keeping only 10-12 char long words from my list is not a good option I think as many rules will either increase or decrease the original word length.
> 
> In Jumbo, the correct options would be "-min-len=10 -max-len=12" which is way more effective than an external mode. This works for all cracking modes, not just wordlist.



Thanks a lot for this fast and precise answer. 

pat

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