internal/chacha20: add SIMD implementation on arm64

Inspired by Vectorization of ChaCha Stream Cipher
https://eprint.iacr.org/2013/759.pdf

name            old time/op    new time/op    delta
ChaCha20/32        690ns ± 0%     872ns ± 0%   +26.38%  (p=0.000 n=10+10)
ChaCha20/63        750ns ± 0%     987ns ± 0%   +31.53%  (p=0.000 n=10+10)
ChaCha20/64        674ns ± 0%     879ns ± 0%   +30.42%  (p=0.000 n=8+10)
ChaCha20/256      2.28µs ± 0%    0.82µs ± 0%   -64.13%  (p=0.000 n=10+10)
ChaCha20/1024     8.64µs ± 0%    2.92µs ± 0%   -66.15%  (p=0.000 n=9+9)
ChaCha20/1350     11.9µs ± 0%     4.5µs ± 0%   -62.51%  (p=0.000 n=10+8)
ChaCha20/65536     554µs ± 0%     181µs ± 0%   -67.33%  (p=0.000 n=10+10)

name            old speed      new speed      delta
ChaCha20/32     46.3MB/s ± 0%  36.7MB/s ± 0%   -20.87%  (p=0.000 n=10+9)
ChaCha20/63     83.9MB/s ± 0%  63.8MB/s ± 0%   -23.97%  (p=0.000 n=10+10)
ChaCha20/64     94.9MB/s ± 0%  72.8MB/s ± 0%   -23.31%  (p=0.000 n=10+10)
ChaCha20/256     112MB/s ± 0%   312MB/s ± 0%  +178.74%  (p=0.000 n=10+10)
ChaCha20/1024    119MB/s ± 0%   350MB/s ± 0%  +195.31%  (p=0.000 n=10+9)
ChaCha20/1350    114MB/s ± 0%   303MB/s ± 0%  +166.73%  (p=0.000 n=8+8)
ChaCha20/65536   118MB/s ± 0%   362MB/s ± 0%  +206.12%  (p=0.000 n=10+10)

Updates golang/go#22809
Change-Id: I487487faa2ae4ff29de6fd8eb1317740c2939c10
Reviewed-on: https://go-review.googlesource.com/c/107628
Reviewed-by: Filippo Valsorda <filippo@golang.org>
3 files changed
tree: 70afaca9e2cca574fee09e68e9637ee3f0a3c1d7
  1. .gitattributes
  2. .gitignore
  3. AUTHORS
  4. CONTRIBUTING.md
  5. CONTRIBUTORS
  6. LICENSE
  7. PATENTS
  8. README.md
  9. acme/
  10. argon2/
  11. bcrypt/
  12. blake2b/
  13. blake2s/
  14. blowfish/
  15. bn256/
  16. cast5/
  17. chacha20poly1305/
  18. codereview.cfg
  19. cryptobyte/
  20. curve25519/
  21. ed25519/
  22. hkdf/
  23. internal/
  24. md4/
  25. nacl/
  26. ocsp/
  27. openpgp/
  28. otr/
  29. pbkdf2/
  30. pkcs12/
  31. poly1305/
  32. ripemd160/
  33. salsa20/
  34. scrypt/
  35. sha3/
  36. ssh/
  37. tea/
  38. twofish/
  39. xtea/
  40. xts/
README.md

Go Cryptography

This repository holds supplementary Go cryptography libraries.

Download/Install

The easiest way to install is to run go get -u golang.org/x/crypto/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/crypto.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the crypto repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/crypto:” in the subject line, so it is easy to find.

Note that contributions to the cryptography package receive additional scrutiny due to their sensitive nature. Patches may take longer than normal to receive feedback.