tree bba74c0dfd66a9ea3ea5069441450f76ea504152
parent dfbb69451277cd6ebfdc8e97a2d5764dcc65fe22
author Xo Wang <xow@google.com> 1571169470 +0000
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1571169470 +0000

[bt][gap-bredr] Store link keys from pairing

In PairingState, receiving a Link Key Notification updates the
connection link key. Check that the link key provides the expected level
of security (is not a legacy pairing key and has expected level of MITM
protection).

Bug: 967

Test: in bt-host-unittests, GAP_PairingStateTest.*LinkKey*

Change-Id: I1eb6c40b2074ef9603f5f93255c7276339fce3a2