tree a10b902dce083a2899ab2445b4c5047ee492b321
parent 2301174eb3598a3290b5c56aae36b19b2c6743ac
author Alex Klyubin <klyubin@google.com> 1430256061 -0700
committer Alex Klyubin <klyubin@google.com> 1430267970 -0700

Align AndroidKeyStore API with user auth API.

This simplifies the AndroidKeyStore API around user authentication: no
more explicit control over which user authenticators are bound to
which keys.

User-authenticated keys with timeout are unlocked by whatever unlocks
the secure lock screen (currently, password/PIN/pattern or
fingerprint). User-authenticated keys that need authentication for
every use are unlocked by fingerprint only.

Bug: 20526234
Bug: 20642549
Change-Id: I1e5e6c988f32657d820797ad5696797477a9ebe9