Re: Optimized S-Boxes in Software



Tom St Denis <tom@xxxxxxx> writes:
Even if you were using SSE and doing 128 substitutions in parallel
(block size of 128x8=1024 bits say) you'd still have probably
100-200 SSE operations per substitution. It'd really not come out ahead.

Maybe it will get more interesting with Larrabee, which will have 32
vector registers of 512 bits each, if I understand it right.
.