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3 Commits

Author SHA1 Message Date
Bryan A Ford d58bf64d5a crypto/subtle: simplify and speed up constant-time primitives 
This changes improves the ConstantTimeByteEq and ConstantTimeEq
primitives to both simplify them and improve their performance.

Also, since there were no benchmarks for this package before,
this change adds benchmarks for ConstantTimeByteEq,
ConstantTimeEq, and ConstantTimeLessOrEq.

benchmarks on darwin/amd64, 10 runs on old vs new code:

name                    old time/op  new time/op  delta
ConstantTimeByteEq-4    2.28ns ±16%  1.53ns ± 2%  -33.09%  (p=0.000 n=10+9)
ConstantTimeEq-4        2.77ns ±10%  1.51ns ± 2%  -45.59%  (p=0.000 n=10+9)
ConstantTimeLessOrEq-4  1.52ns ± 8%  1.50ns ± 2%     ~     (p=0.866 n=9+9)

Change-Id: I29b8cbcf158e1f30411720db82d38b4ecd166b15
Reviewed-on: https://go-review.googlesource.com/45310
Reviewed-by: Adam Langley <agl@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2017-11-10 03:47:57 +00:00
Jason Barnett 6662897b2a crypto/subtle: expand abbreviation to eliminate confusion 
Change-Id: I68d66fccf9cc8f7137c92b94820ce7d6f478a185
Reviewed-on: https://go-review.googlesource.com/23310
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2016-06-09 15:30:48 +00:00
Russ Cox c007ce824d build: move package sources from src/pkg to src 
Preparation was in CL 134570043.
This CL contains only the effect of 'hg mv src/pkg/* src'.
For more about the move, see golang.org/s/go14nopkg.
 2014-09-08 00:08:51 -04:00