Date: Sat, 26 Apr 2014 06:53:41 +0200 From: Frank Dittrich <frank.dittrich@...lbox.org> To: john-users@...ts.openwall.com Subject: Re: Many Problem's + Many Try's and no Soultion On 04/26/2014 02:39 AM, Solar Designer wrote: > If you know the characters in those positions reliably, then you must > exclude them from incremental mode's range. Keep it at MinLen = 8 and > MaxLen = 8. If you nevertheless need to alter the character in position > 14 (you don't know that one reliably, despite of knowing reliably the > characters in positions 9 to 13, and 15 to 20), then I'm afraid it'd be > best for you to run multiple instances of JtR, each one configured to > try a different likely character for that position. If there are more > than a handful of likely possible characters per position, then you're > probably out of luck anyway - although this depends on hash type (you > had probably mentioned which it was, but I don't recall). You could try an incremental mode with a length fixed to 9, and move word to word in the external mode, then putting some of the known characters before word, others after word. But you are right, depending on hash type you'll only be able to cover a minor part of the key space. Frank
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