tree a40b388555d21a4ee84c69afc674cebd7d81a100
parent d8c0a7e426aad56fe22dc6441473c15e9b216c20
author Paul Crowley <paulcrowley@google.com> 1483597960 -0800
committer Rubin Xu <rubinxu@google.com> 1487029051 +0000

Support keys with a secret but no token, which are handled not using
Keymaster but in-process crypto.

Bug: 33384925
Test: manual for now: patch KeyAuthentication.usesKeymaster() to always return true;
      flash a FBE device, add a device PIN, reboot and verify PIN can unlock FBE.
      Then clear device PIN, reboot and verify FBE is unlocked automatically.
      In both cases, check there is no keymaster_key_blob in
      /data/misc/vold/user_keys/ce/0/current/
      Unit tests to be added.
Change-Id: Ia94e2b39d60bfd98c7a8347a5ba043eeab6928c5