Date: Fri, 11 Jan 2013 10:49:34 +0400 From: Solar Designer <solar@...nwall.com> To: Albert Veli <albert.veli@...il.com> Cc: john-dev@...ts.openwall.com Subject: Re: sha1 On Thu, Jan 10, 2013 at 06:43:58PM +0100, Albert Veli wrote: > I just saw a blogpost linking to this optimized sha1 implementation: > > https://hashcat.net/p12/ > > Original blog post here (swedish): > http://secworks.se/2013/01/nytt-satt-att-optimera-sha-1/ > > In short, the creator of hashcat analyzed sha1 and found out 21% of the > xor-operation cancel out... This leads to the possibility to optimize the > implementation. I guess the john code could also use this optimization. This was brought up in here before: http://www.openwall.com/lists/john-dev/2012/12/11/6 click "thread-next" for replies in that thread. Alexander
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