pyca/cryptography — pull request #315 by juliankrause (2013-12-18 05:28:42+00:00)
Title: Add verify function to hmac and hashes.

Verify function from https://github.com/pyca/cryptography/pull/280 pulled out into a new pull request now that constant time comparison has landed. Also from discussion there added it to both hashes as well as HMAC.