[PATCH 4.9 27/39] mac80211: use constant time comparison with keys

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Jason A. Donenfeld commit 2bdd713b92a9cade239d3c7d15205a09f556624d upstream. Otherwise we risk leaking information via timing side channel. Fixes: fdf7cb4185b6 ("mac80211:

[PATCH 4.9 27/39] mac80211: use constant time comparison with keys

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Jason A. Donenfeld commit 2bdd713b92a9cade239d3c7d15205a09f556624d upstream. Otherwise we risk leaking information via timing side channel. Fixes: fdf7cb4185b6 ("mac80211: accept key