Date: Wed, 23 Jan 2013 18:52:31 +0100 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: Min password length On 23 Jan, 2013, at 18:43 , Frank Dittrich <frank_dittrich@...mail.com> wrote: > On 01/23/2013 06:25 PM, magnum wrote: >> The git versions of Jumbo has a --min-length=N option that does what you want - except that formats should also be able to default to > 0 on their own. >> >> The --min-length=N option will affect modes that already had such notion (ie. Incremental and Markov) and it will also affect Single and Wordlist modes in that they will drop words shorter than N (after applying rules, if applicable). > > Both --min-length=N and --max-length=N (and their effect on different > cracking modes (--incremental and --markov / --wordlist and --single / > --external) need to be documented in doc/OPTIONS. True. >> BTW we need some systematic testing of these new options. > > I knew how --min-length=N and --max-length=N work for --incremental and > --markov (tested this in the past). > After my last reply to Jim I tested it with --wordlist (with and without > --rules), and was just thinking about how to test it for --single mode > (since --single doesn't work well with --stdout). > > What happens (what is the expected behaviour) if --single or --wordlist > is combined with an --external filter? That is a jolly good question. The figures are available as new external mode variables (req_minlen and req_maxlen). But I'm afraid the rules engine (or Wordlist's dummy_rules) will drop a word even though an external mode would make it comply. We need to review this. magnum
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