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go / go / b2174a16c0012c71a6c6baeb5f7e76868dc411a2
commitb2174a16c0012c71a6c6baeb5f7e76868dc411a2[log] [tgz]
authorVlad Krasnov <vlad@cloudflare.com>Fri Aug 18 12:49:59 2017 -0700
committerAdam Langley <agl@golang.org>Fri Aug 18 21:40:57 2017 +0000
tree315404ed3725b87d04b63de9dc5c9dfcaa03f9ae
parent57584a0ee1761b6204bbd8b48e1129c0217caedc [diff]
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>
2 files changed
tree: 315404ed3725b87d04b63de9dc5c9dfcaa03f9ae
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
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