tree 6d17fc215534ac8a82b859914138ddfe75e738c6
parent 606b2ec15471605b81022419b736c03ce1030444
author Ram Periathiruvadi <ramperry@google.com> 1558130901 -0700
committer Ram Periathiruvadi <ramperry@google.com> 1559259235 -0700

Unlock flow for Trusted Device.

Added the new flow, that adds a forward-secure session resumption by
authenticating both sides using
1. an unverified ukey2 handshake
2. previous session data.

Bug: 120574941
Test: Manual test to authenticate the head unit with a phone with
corresponding changes.
Change-Id: Idbf198544223100fe1f036abd98e5febfe7f00d5