[floatboth]

haha nope. This is not a part of AES-NI.

The only processors so far with these extensions are low power Goldmont chips.

https://github.com/weidai11/cryptopp/issues/139

[Scaevolus]

Goldmont probably has them because it doesn't have the wide AVX pipelines necessary for fast software crypto.

Skylake can compute SHA1 at 4.3-3.4 cycles/B and SHA256 at 7-9 cycles/B [1]. That's ~1GB/s SHA1 and ~500MB/s SHA256.

1: https://bench.cr.yp.to/results-hash.html#amd64-skylake