[PATCH] SHA-1: Add SSSE3 implementation

[Werner Koch]

On Fri, 13 Dec 2013 15:10, jussi.kivilinna at iki.fi said:

> cpu                Old        New        Diff
> Intel i5-4570      9.02 c/B   5.22 c/B   1.72x
> Intel i5-2450M     12.27 c/B  7.24 c/B   1.69x
> Intel Core2 T8100  7.94 c/B   6.76 c/B   1.17x

I justed drafted an article which says

   For the important SHA-1 algorithm 1.6 improves over 1.5 but is not
   yet up to what Nettle does.  The better improvement is likely due to
   changes in helper functions (stack burning) and not due to changes in
   the actual implementation.  There is definitely room for
   improvements.

You are a really fast hacker :-).  Guess I need to re-run the
benchmarks.  Yes, please add this.  If there is ever a problem with this
code the admin can disable it using /etc/gcrypt/hwf.deny.


Salam-Shalom,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.