Date: Wed, 30 Oct 2013 15:50:06 +0100 From: Katja Malvoni <kmalvoni@...il.com> To: john-dev@...ts.openwall.com Subject: Re: ZedBoard: bcrypt On Wed, Oct 30, 2013 at 2:07 PM, Katja Malvoni <kmalvoni@...il.com> wrote: > > On Wed, Oct 30, 2013 at 10:17 AM, Solar Designer <solar@...nwall.com>wrote: > >> If so, does anything prevent you from optimizing this to? - >> >> Cycle 0: compute new R; swap L and R; initiate 4 S-box lookups >> Cycle 1: wait >> >> ... except possibly for the special cases of the first and the last >> round? In the first round, bypass some of the logic. After the last >> round, invoke the same logic, but bypass the S-box lookups. >> > > As far as I can tell nothing prevents me to do that, I'm on it now. > Actually I can't do that - I need L to know which element from S-box to fetch and I have to compute it one cycle before initiating S-box lookups. Katja Content of type "text/html" skipped
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