Date: Sat, 5 Jan 2013 08:26:12 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: BLAKE2 (was: New plugin load order magic) On Sat, Jan 05, 2013 at 09:15:05AM +0530, Dhiru Kholia wrote: > On Sat, Jan 5, 2013 at 6:58 AM, Solar Designer <solar@...nwall.com> wrote: > > Then, Dhiru included the slow reference implementation of BLAKE2b > > instead of the SIMD implementations. I think we should include all SIMD > > implementations that are available from BLAKE2 team, plus the reference > > implementations for non-x86 and for older x86 CPUs. > > I can try doing this but I am not familiar with SIMD business. With BLAKE2, it is very different from and much easier than the SIMD business we have elsewhere in JtR. BLAKE2 uses up to 128-bit SIMD vectors on its own - you just need to pick the right implementation. There's further room for optimization (cracking-specific), but that's a possible next step. > Speed is not that bad on 64-bit machines. Yes. It's similar to SHA-512's, but it is supposed to be better (with SIMD code). Thanks! Alexander
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