Subject: Re: difference in key calculations for ssh
To: Andrew Brown <firstname.lastname@example.org>
From: Todd Vierling <email@example.com>
Date: 05/25/2000 17:27:25
On Thu, 25 May 2000, Andrew Brown wrote:
: >My guess would be for the same reasons rc5des is significantly faster
: >on Intel. My understanding is that the Intel is much faster at certain
: >instructions (shifts?) that are heavily used by the encryption code.
: i dunno if it's shifts...i always figured it was intel being better at
: integer arthmetic than sparcs.
It's bitwise rotates, for one. SPARCs have no such beasts.
It's also that there is a very highly optimised assembly gmp innards for x86
IIRC, SPARC in ssh uses the C versions of all the gmp stuff....
-- Todd Vierling (firstname.lastname@example.org)