tree 0d9ef0ef9ddfec5fbb186264f4e888332d42db76
parent 37ca4172bb9c62ff25b5277ad7066935f538b749
author Tucker Sylvestro <tuckeris@google.com> 1470434567 -0400
committer Tucker Sylvestro <tuckeris@google.com> 1475707122 -0400

Support and use TAG_ALLOW_WHILE_ON_BODY

There are three changes in this CL:
1. Persist all characteristics provided at the time of key creation.
   We do this to avoid device-specific keymaster implementations
   stripping keys they are not aware of.
2. Add an onDeviceOffBody API method that will be called whenever a
   wearable device is detected to have been removed.
3. Check whether a key was created with TAG_ALLOW_WHILE_ON_BODY and
   the device has gone off-body since the last auth event when
   deciding whether it can be used.

BUG: 30701680
BUG: 28911985
Change-Id: I6be3af3dee8e576fe713dfdd726502d8b333f224