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4 Commits

Author SHA1 Message Date
Michael McLoughlin 4a0dad211c crypto/cipher: 8K benchmarks for AES stream modes 
Some parallelizable cipher modes may achieve peak performance for larger
block sizes. For this reason the AES-GCM mode already has an 8K
benchmark alongside the 1K version. This change introduces 8K benchmarks
for additional AES stream cipher modes.

Updates #20967

Change-Id: If97c6fbf31222602dcc200f8f418d95908ec1202
Reviewed-on: https://go-review.googlesource.com/136897
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-09-25 23:11:34 +00:00
Vlad Krasnov b2174a16c0 crypto/aes: make the GHASH part of AES-GCM faster 
By processing 8 blocks in parallel GHASH achieves higher throughput on amd64

Results on Skylake i7:

benchmark                   old ns/op     new ns/op     delta
BenchmarkAESGCMSeal1K-8     316           314           -0.63%
BenchmarkAESGCMOpen1K-8     282           281           -0.35%
BenchmarkAESGCMSign8K-8     5611          1099          -80.41%
BenchmarkAESGCMSeal8K-8     1869          1922          +2.84%
BenchmarkAESGCMOpen8K-8     1718          1724          +0.35%

benchmark                   old MB/s     new MB/s     speedup
BenchmarkAESGCMSeal1K-8     3237.10      3260.94      1.01x
BenchmarkAESGCMOpen1K-8     3629.74      3638.10      1.00x
BenchmarkAESGCMSign8K-8     1459.82      7452.99      5.11x
BenchmarkAESGCMSeal8K-8     4382.45      4260.93      0.97x
BenchmarkAESGCMOpen8K-8     4766.41      4750.54      1.00x

Change-Id: I479f2a791a968caa1c516115b0b6b96a791a20d2
Reviewed-on: https://go-review.googlesource.com/57150
Reviewed-by: Adam Langley <agl@golang.org>
 2017-08-18 21:40:57 +00:00
Vlad Krasnov efeeee38c9 crypto/aes: dedicated asm version of AES-GCM 
The existing implementation didn't use the CLMUL instructions for fast
and constant time binary-field multiplication. With this change, amd64
CPUs that support both AES and CLMUL instructions will use an optimised
asm implementation.

benchmark                 old ns/op     new ns/op     delta
BenchmarkAESGCMSeal8K     91723         3200          -96.51%
BenchmarkAESGCMOpen8K     91487         3324          -96.37%
BenchmarkAESGCMSeal1K     11873         546           -95.40%
BenchmarkAESGCMOpen1K     11833         594           -94.98%

benchmark                 old MB/s     new MB/s     speedup
BenchmarkAESGCMSeal8K     89.31        2559.62      28.66x
BenchmarkAESGCMOpen8K     89.54        2463.78      27.52x
BenchmarkAESGCMSeal1K     86.24        1872.49      21.71x
BenchmarkAESGCMOpen1K     86.53        1721.78      19.90x

Change-Id: Idd63233098356d8b353d16624747b74d0c3f193e
Reviewed-on: https://go-review.googlesource.com/10484
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
 2015-08-29 21:02:38 +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