Many websites now support HTTPS that may not at the time the code was
committed; let's use the HTTPS links where we can.
Change-Id: I7099dfa0dbb213294e65b4387f343d6e8f955b97
Reviewed-on: https://go-review.googlesource.com/47131
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Work on uint32 slices instead of bytes.
Replace usage of Salsa20/8 from salsa package with
the specialized version.
benchmark old ns/op new ns/op delta
BenchmarkKey 266430525 126657130 -52.46%
R=agl
CC=golang-dev
https://golang.org/cl/7139050