poly1305: drop broken arm assembly

The ARM assembly uses the reserved G register. This started causing
frequent crashes due to async preemption, but it was already broken in
the presence of signals, including SIGPROF.

name                          old speed      new speed      delta
Chacha20Poly1305/Open-64      2.88MB/s ± 0%  1.85MB/s ± 0%   -35.76%  (p=0.008 n=6+7)
Chacha20Poly1305/Seal-64      3.17MB/s ± 1%  1.97MB/s ± 0%   -37.78%  (p=0.000 n=10+8)
Chacha20Poly1305/Open-64-X    2.41MB/s ± 0%  1.61MB/s ± 0%   -33.29%  (p=0.000 n=9+9)
Chacha20Poly1305/Seal-64-X    2.55MB/s ± 0%  1.64MB/s ± 0%   -35.61%  (p=0.000 n=10+9)
Chacha20Poly1305/Open-1350    8.43MB/s ± 0%  4.15MB/s ± 0%   -50.78%  (p=0.000 n=10+10)
Chacha20Poly1305/Seal-1350    8.55MB/s ± 0%  4.18MB/s ± 0%   -51.12%  (p=0.000 n=9+9)
Chacha20Poly1305/Open-1350-X  8.16MB/s ± 0%  4.06MB/s ± 0%   -50.18%  (p=0.000 n=10+10)
Chacha20Poly1305/Seal-1350-X  8.24MB/s ± 1%  4.08MB/s ± 1%   -50.53%  (p=0.000 n=10+10)
Chacha20Poly1305/Open-8192    9.73MB/s ± 1%  4.56MB/s ± 0%   -53.15%  (p=0.000 n=9+10)
Chacha20Poly1305/Seal-8192    9.57MB/s ± 0%  4.52MB/s ± 0%   -52.77%  (p=0.000 n=9+9)
Chacha20Poly1305/Open-8192-X  9.65MB/s ± 0%  4.54MB/s ± 0%   -52.95%  (p=0.000 n=10+7)
Chacha20Poly1305/Seal-8192-X  9.47MB/s ± 1%  4.50MB/s ± 0%   -52.50%  (p=0.000 n=10+9)

Fixes golang/go#35511

Change-Id: I5e5ca3a0499f04c5fece5bc669a417e32d2656c6
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/213880
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
3 files changed
tree: 7a2710186d4eca6d9f6450577ec686d9778e404c
  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. chacha20/
  18. chacha20poly1305/
  19. codereview.cfg
  20. cryptobyte/
  21. curve25519/
  22. ed25519/
  23. go.mod
  24. go.sum
  25. hkdf/
  26. internal/
  27. md4/
  28. nacl/
  29. ocsp/
  30. openpgp/
  31. otr/
  32. pbkdf2/
  33. pkcs12/
  34. poly1305/
  35. ripemd160/
  36. salsa20/
  37. scrypt/
  38. sha3/
  39. ssh/
  40. tea/
  41. twofish/
  42. xtea/
  43. 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.