*** Submitted as
http://code.google.com/p/go/source/detail?r=18dffd0c07b2 ***
crypto/hmac: add Equal function.
It was suggested that it's too easy to use crypto/hmac insecurely and
I think that has some merit. This change adds a Equal function to
make it obvious that MAC values should be compared in constant time.
R=rsc, max
CC=golang-dev
http://codereview.appspot.com/6632044
http://codereview.appspot.com/6632044/
