3 ms·
sha256 is not slow on modern hardware. openssl doesn't have blake3, but here is blake2: type 16 bytes 64 bytes 256 bytes 1024 bytes
by coppsilgold 3y ago
sha256 is not slow on modern hardware. openssl doesn't have blake3, but here is blake2:
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 16384 bytes
BLAKE2s256 75697.37k 308777.40k 479373.40k 567875.81k 592687.09k 591254.18k
BLAKE2b512 63478.11k 243125.73k 671822.08k 922093.51k 1047833.51k 1048959.57k
sha256 129376.82k 416316.32k 1041909.33k 1664480.49k 2018678.67k 2043838.46k
This is with the x86 sha256 instructions: sha256msg1, sha256msg2, sha256rnds2
- dralley 3y ago"modern hardware" deserves some caveats. AMD has supported those extensions since the original Zen, but Intel CPUs generally lacked them until only about 2 years ago.
- adrian_b 3y agoFor many years, starting in 2016, Intel has supported SHA-256 only in their Atom CPUs. The reason seems to be that the Atom CPUs were compared in Geekbench with ARM CPUs, and without hardware SHA the Intel CPUs would have obtained worst benchmark scores. In their big cores, SHA has been added in 2019, in Ice Lake (while Comet Lake still lacked it, being a Skylake derivative), and since then all newer Intel CPUs have it. So except for the Intel Core CPUs, the x86 and ARM CPUs have had hardware SHA for at least 7 years, while the Intel Core CPUs have had it for the last 4 years.
- dralley 3y ago>SHA has been added in 2019, in Ice Lake (while Comet Lake still lacked it, being a Skylake derivative) Ice Lake was effectively a paper launch with low volume, repeated delays and mediocre performance. The server CPUs weren't released until 2021. In terms of relevant quantities and relevant markets (e.g. not Atom or gaming laptops), Intel CPUs have only been "shipping" with those extensions for around 2.5 years, not 4.