crypto

Files

T

History

Xiaolin Zhao 234d0b5a5f chacha20: add loong64 SIMD implementation

Add an assembly implementation of ChaCha20 for Loong64 using LSX SIMD
instructions. This significantly improves performance across all message
sizes on LoongArch machines.

Benchmark results on Loongson-3C6000 @ 2.20GHz:

goos: linux
goarch: loong64
pkg: golang.org/x/crypto/chacha20
cpu: Loongson-3C6000/S @ 2200.00MHz
                 │  old.bench   │              new.bench              │
                 │    sec/op    │   sec/op     vs base                │
ChaCha20/64         188.4n ± 0%   156.9n ± 0%  -16.72% (p=0.000 n=10)
ChaCha20/256        666.4n ± 0%   151.5n ± 0%  -77.27% (p=0.000 n=10)
ChaCha20/10x25     1037.0n ± 0%   578.9n ± 0%  -44.18% (p=0.000 n=10)
ChaCha20/4096      10.207µ ± 0%   1.955µ ± 0%  -80.85% (p=0.000 n=10)
ChaCha20/100x40    11.856µ ± 0%   5.785µ ± 0%  -51.21% (p=0.000 n=10)
ChaCha20/65536     162.99µ ± 0%   31.60µ ± 0%  -80.61% (p=0.000 n=10)
ChaCha20/1000x65   165.57µ ± 0%   41.93µ ± 0%  -74.67% (p=0.000 n=10)
geomean             6.369µ        2.141µ       -66.38%

                 │  old.bench   │               new.bench                │
                 │     B/s      │      B/s       vs base                 │
ChaCha20/64        323.9Mi ± 0%    389.0Mi ± 0%   +20.10% (p=0.000 n=10)
ChaCha20/256       366.4Mi ± 0%   1611.2Mi ± 0%  +339.80% (p=0.000 n=10)
ChaCha20/10x25     229.8Mi ± 0%    411.8Mi ± 0%   +79.19% (p=0.000 n=10)
ChaCha20/4096      382.7Mi ± 0%   1998.1Mi ± 0%  +422.08% (p=0.000 n=10)
ChaCha20/100x40    321.8Mi ± 0%    659.4Mi ± 0%  +104.94% (p=0.000 n=10)
ChaCha20/65536     383.5Mi ± 0%   1977.8Mi ± 0%  +415.78% (p=0.000 n=10)
ChaCha20/1000x65   374.4Mi ± 0%   1478.4Mi ± 0%  +294.86% (p=0.000 n=10)
geomean            335.9Mi         999.2Mi       +197.50%

Change-Id: I6b8d243819d0ab1a1d6540648ed9bd00ecad5a2e
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/683196
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>

2026-09-19 18:39:20 -07:00

chacha_arm64.go

all: update go directive to 1.18

2023-10-11 22:02:22 +00:00

chacha_arm64.s

all: fix some typos in comment

2025-10-08 13:58:26 -07:00

chacha_generic.go

internal/subtle: rename to internal/alias

2022-08-17 18:37:53 +00:00

chacha_loong64.go

chacha20: add loong64 SIMD implementation