[Swan-commit] Changes to ref refs/heads/master

[Andrew Cagney]

New commits:
commit c791d904c6498efed09b0158ce4721e2c28a2516
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Dec 5 12:27:10 2017 -0500

    crypto: add {encrypt,prf}_key_from_bytes()
    
    and simplify the old symkey_from_bytes()