Date: Wed, 2 Mar 2016 22:25:51 +0100 From: Frank Dittrich <frank.dittrich@...lbox.org> To: john-users@...ts.openwall.com Subject: Re: Reverse T9 rule On 03/02/2016 09:44 PM, magnum wrote: > Here's where I cowardly gave up: > > # Should do 624686 -> magnum (among many alternatives) > [List.Rules:9T] > s2[abc] s3[def] s4[ghi] s5[jkl] s6[mno] s7[pqrs] s8[tuv] s9[wxyz] > s0[ ] Q > > The problem with this rule as written here is that given the input of > 624686 it will replace *all* instances of "6" with either "m", "n" or > "o". So it will produce candidates like magmum or nagnun but never > magnum. Thus here's the challenge: Write a rule that actually works, as > efficiently as possible. Can it be accommplished at all? Perhaps we'd > need a new rule command? I'm afraid a completely generic solution just with --rules isn't possible. I think you'll need rexgen support and define a new regex alphabet you can use with --regex. Alternatively, enhance --external to support generating multiple candidates per input word, and define a new external mode. Frank
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