|author||Carlos Eduardo Seo <firstname.lastname@example.org>||Mon Apr 15 21:04:41 2019 -0300|
|committer||Lynn Boger <email@example.com>||Thu May 30 12:26:14 2019 +0000|
internal/chacha20: improve performance for ppc64le Add asm implementation for chacha20 using vector instructions on ppc64le. Below, the difference using the new code: name old speed new speed delta ChaCha20/32-16 167MB/s ± 0% 129MB/s ± 0% -22.60% (p=0.008 n=5+5) ChaCha20/63-16 308MB/s ± 0% 249MB/s ± 0% -19.00% (p=0.008 n=5+5) ChaCha20/64-16 357MB/s ± 0% 251MB/s ± 0% -29.57% (p=0.008 n=5+5) ChaCha20/256-16 398MB/s ± 0% 1199MB/s ± 0% +201.20% (p=0.008 n=5+5) ChaCha20/1024-16 413MB/s ± 0% 1398MB/s ± 0% +238.67% (p=0.008 n=5+5) ChaCha20/1350-16 395MB/s ± 0% 1189MB/s ± 0% +200.71% (p=0.008 n=5+5) ChaCha20/65536-16 420MB/s ± 0% 1489MB/s ± 0% +254.10% (p=0.008 n=5+5) Small sizes are slower due the fact that it always calculates using 256 bytes of key stream. This change was originally from Paulo Flabiano Smorigo <firstname.lastname@example.org> and started as CL 108999 (https://go-review.googlesource.com/c/crypto/+/108999). Fixes golang/go#25051 Change-Id: Ie510494249b227379e23d993467256b3d4088035 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/172177 Run-TryBot: Carlos Eduardo Seo <email@example.com> TryBot-Result: Gobot Gobot <firstname.lastname@example.org> Reviewed-by: Ian Lance Taylor <email@example.com> Reviewed-by: Lynn Boger <firstname.lastname@example.org>
This repository holds supplementary Go cryptography libraries.
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