tree faa5b34dc3d9f36f5e33a5eef3cb38f0e178ff0c
parent 365b7a0fcbf273b1fa704d151059e419abd6cfb8
author Adam Langley <agl@google.com> 1562782344 -0700
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1562793272 +0000

Add SipHash-2-4.

The added code is a one-shot function. A handful of instructions could
be saved by having a context object for repeated use of the same key,
but perhaps it's not needed.

Selected the 2-4 variant to implement because it seems to be
overwhelmingly the most commonly used.

Change-Id: I1e4f699f7dd5a2d35e12245fa116bafbd3439979
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/36664
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: David Benjamin <davidben@google.com>