Date: Tue, 13 Jan 2009 18:15:12 -0600 From: Steve Bergman <sbergman27@...il.com> To: john-users@...ts.openwall.com Subject: Re: Clarification desired on modifying incremental mode to handle 9 chars On Sun, 2009-01-11 at 07:33 +0300, Solar Designer wrote: > Thank you for posting this info - I imagine that some list members may > find it useful. > Things slowed down rather quickly from there. > Here's an approach you may try. With the following in your john.conf, > you may use the bundled all.chr file to have JtR try 9 character > candidate passwords: All in all, after more consideration, I decided that it really was more sensible to focus the processing power on the length <= 8 space. What I did end up doing, for comparison, after letting the Q6600 run for a couple of days was to start the same thing again, but on an 8 core Xeon E5320 (1.86GHz) box, and using the "Parallel" filter in the default john.conf (suitably edited for 8 cores). I note that after a day and a half of running it is allocating less processor time to the shorter password lengths and more to lengths 7 and 8 than with the previous method which divided the work up by password length. I find that better suits my tastes. I also tried the bindshell.net patched 1.7.2, which worked well enough, but the lack of a restore capability is a show stopper. At least, I think it lacks that capability. I believe I saw a post of yours which mentioned that being a difficult problem, and I didn't find any obvious way to do it. (My attempts to subscribe to the john-mpi mailing list have been, thus far, unsuccessful, and I haven't found an archive.) The Parallel filter is obviously a bit of a hack, but it seems to work pretty well for these relatively slow salted MD5 hashes, as is mentioned on the wiki. -Steve -- 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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