Date: Sat, 26 Feb 2011 11:58:41 +0100 From: magnum <rawsmooth@...dband.net> To: john-users@...ts.openwall.com Subject: Re: md5_gen(0) broken for ages? On 02/26/2011 02:20 AM, jfoug wrote: > It is no different than taking a line like > > User:abcdef0123456789abcdef0123456789 > > And calling john with john -format=md5a inputfile.in > > and expecting the above line in the input file to be 'used'. > It will not be used, because md5a has a specific format, and > That hash does not match it. If a hash does not start with the > $1$ when md5a will never choose that line. Same for md5_gen(0) OK, that makes sense. But there is a difference: You will never find hashes "in the wild" prepended with md5gen(n). Sometimes you have to guess format just based on hash length and hope that a weak password will reveal what it is. Unless you can iterate over the --subformat option, you have to modify the hash file for each try. So let me re-phrase it as a low-prio enhancement request. Would it be possible to have it accept bare hashes [of correct length etc] if --subformat was given, or could this introduce other problems? thanks magnum
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