Date: Fri, 11 May 2007 09:06:41 +0400 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: Q about "MaxLen" of incremental mode On Fri, May 11, 2007 at 12:23:42PM +0800, yl_changjiu wrote: > i added a section like this in john.ini > [Incremental:Alnum_own01] > File = $JOHN/alnum.chr > MinLen = 5 > MaxLen = 12 > CharCount = 36 > when i try to run john under Alnum_own01, I got this message "Warning: MaxLen = 12 is too large for the current hash type, reduced to 8" > my hashes are like "I/2n0CZPaSkTI", "LHMfqiZfvP.eo" and so on. i just think MaxLen=8 is not enough for my hashes. You're wrong about that. "MaxLen = 8" is enough since these hashes truncate passwords at 8 characters. Of the two hashes above, the first one gets cracked instantly and the other takes under 15 minutes to crack on a modern system with John's default settings (no command line options). You similarly did not need to increase MinLen or to restrict John to alphanumeric characters. -- Alexander Peslyak <solar at openwall.com> GPG key ID: 5B341F15 fp: B3FB 63F4 D7A3 BCCC 6F6E FC55 A2FC 027C 5B34 1F15 http://www.openwall.com - bringing security into open computing environments -- To unsubscribe, e-mail john-users-unsubscribe@...ts.openwall.com and reply to the automated confirmation request that will be sent to you.
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