[Cryptography] on-chip crypto accelerators (was: floating point)
hbaker1 at pipeline.com
Wed Dec 31 08:53:00 EST 2014
At 10:42 PM 12/27/2014, John Denker wrote:
>One big reason we've been discussing floating point is
>that FPUs are very powerful and very widely available.
>A goodly fraction of the real estate on a typical
>processor chip is taken up by the FPU. So if you
>can get the FPU to do your bidding, it's a big win.
>Meanwhile, we should keep in mind that there are other
>things in the same category, including MMX/SSE as well
>as GPU. There exist crypto algorithms implemented as
>More importantly, some modern processors have onboard crypto accelerators
>It may be that the FPU is not optimized for our purposes,
>but that stops being relevant when the crypto accelerator
>does the job.
The BCD accelerator looks a lot more interesting&fun:
"The DFU efficiently supports binary-coded decimal (BCD) math"
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