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8 Commits
Author SHA1 Message Date
Tom Thorogood 2c241ca304 chacha20poly1305: correct AVX2 feature detection 
CL 110355 switched out the adhoc cpu feature detection for x/sys/cpu, in
doing so the AVX2 check was broken. The assembly code uses MULX which is
part of BMI2.

Updates golang/go#24843

Change-Id: I4719b8ff3211eb1c823099512e593e540d6f3be8
GitHub-Last-Rev: 70542b53cd09fcae26c3579cd84bcee39a4b8a57
GitHub-Pull-Request: golang/crypto#44
Reviewed-on: https://go-review.googlesource.com/110796
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
 2018-05-02 12:12:36 +00:00
Andreas Auernhammer ae8bce0030 crypto/{blake2b,blake2s,argon2,chacha20poly1305}: replace CPU feature detection 
This change removes package specific CPU-feature detection code and
replaces it with x/sys/cpu.

Fixes golang/go#24843

Change-Id: I150dd7b3aeb8eef428c91f9b1df741ceb8a87a24
Reviewed-on: https://go-review.googlesource.com/110355
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2018-04-30 18:12:35 +00:00
Michael Munday 754cb46fa0 chacha20poly1305: update to use new ChaCha20 API 
Use the new streaming API introduced in CL 104856. Performance
change is negligible:

name                       old speed      new speed      delta
Chacha20Poly1305Open_64     131MB/s ± 2%   135MB/s ± 2%  +3.01%  (p=0.000 n=18+18)
Chacha20Poly1305Seal_64     137MB/s ± 2%   141MB/s ± 3%  +2.89%  (p=0.000 n=19+20)
Chacha20Poly1305Open_1350   305MB/s ± 3%   309MB/s ± 2%  +1.38%  (p=0.001 n=19+20)
Chacha20Poly1305Seal_1350   309MB/s ± 2%   311MB/s ± 2%  +0.74%  (p=0.032 n=19+18)
Chacha20Poly1305Open_8K     338MB/s ± 3%   340MB/s ± 2%    ~     (p=0.108 n=19+20)
Chacha20Poly1305Seal_8K     335MB/s ± 4%   342MB/s ± 2%  +1.96%  (p=0.000 n=19+19)

Change-Id: I2232c9d8d8431f30fb85b4b371d78a57e633283e
Reviewed-on: https://go-review.googlesource.com/108657
Run-TryBot: Michael Munday <mike.munday@ibm.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2018-04-26 23:00:03 +00:00
Han-Wen Nienhuys 0fe963104e chacha20poly1305: fix style nits in variable names 
Change-Id: I3ac9dc7bf1c1c6ff39b3385cbf965dfb57f8327a
Reviewed-on: https://go-review.googlesource.com/43511
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2017-05-16 16:16:55 +00:00
Martin Möhrmann 12e9ca725d chacha20poly1305: add runtime internal independent cpu feature detection 
Change-Id: I150c5e0453b0fa3457d4786fe90901a54e216b02
Reviewed-on: https://go-review.googlesource.com/41862
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2017-05-03 07:39:20 +00:00
Alex Vaghin 9477e0b78b chacha20poly1305: fix build constraints 
Similarly to https://go-review.googlesource.com/32311,
chacha20poly1305 needs additional build constraints
for non-standard toolchains.

Change-Id: I22816ef333c05450e9ab4debb3ce591518b6b84b
Reviewed-on: https://go-review.googlesource.com/32391
Run-TryBot: Alex Vaghin <ddos@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
 2016-10-31 18:08:06 +00:00
Brad Fitzpatrick 5f31782cfb poly1305, chacha20poly1305: fix build for Go 1.6 
Fixes golang/go#17424

Change-Id: I49d6e475c173da6a31542931d555ab87cc45a1c6
Reviewed-on: https://go-review.googlesource.com/30971
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
 2016-10-12 22:20:46 +00:00
Adam Langley 594708b89f chacha20poly1305: new package. 
This change adds a package, chacha20poly1305, which implements the
ChaCha20-Poly1305 AEAD from RFC 7539. This AEAD has several attractive
features:
   1. It's naturally constant time. AES-GCM needs either dedicated
      hardware or extreme effort to be fast and constant-time, while
      this design is easy to make constant-time.
   2. It's fast on modern processors: it runs at 1GB/s on my IvyBrige
      system.
   3. It's seeing significant use in TLS. (A change for crypto/tls is
      forthcoming.)

This change merges two CLs:
  https://go-review.googlesource.com/#/c/24717
  https://go-review.googlesource.com/#/c/26691

I took the amd64-optimised AEAD implementation from the former because
it was significantly faster. But the structure of the change is taken
from the latter.

This version will be checked into x/crypto. This package will then be
vendored into the stdlib so that it can be used from crypto/tls.

Change-Id: I5a60587958b7afeec81ca1091e603a7e8517000b
Reviewed-on: https://go-review.googlesource.com/30728
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2016-10-11 21:59:08 +00:00