tree fc0acc251c6c5f9f4405ee77ffdf6ff271dd8cad
parent f0d24737354819738adc40bf47a006e56652d27a
author Paul Lawrence <paullawrence@google.com> 1430258830 +0000
committer Paul Lawrence <paullawrence@google.com> 1430260450 -0700

Securely encrypt the master key

Move all key management into vold
Reuse vold's existing key management through the crypto footer
to manage the device wide keys.

Use ro.crypto.type flag to determine crypto type, which prevents
any issues when running in block encrypted mode, as well as speeding
up boot in block or no encryption.

This is one of four changes to enable this functionality:
  https://android-review.googlesource.com/#/c/148586/
  https://android-review.googlesource.com/#/c/148604/
  https://android-review.googlesource.com/#/c/148606/
  https://android-review.googlesource.com/#/c/148607/

Bug: 18151196

Change-Id: I6a8a18f43ae837e330e2785bd26c2c306ae1816b