tree d2ea04c168fe477ec2e390e3eb728392d02df588
parent 8f0bf970b2475abcf7dc32a33605944617a8931e
author Victor Hsieh <victorhsieh@google.com> 1505850537 -0700
committer Victor Hsieh <victorhsieh@google.com> 1506553073 -0700

Add VerityTreeBuilder to generate root hash

Test: Verified that with the same file, generated root hash and verity
      tree match the existing dm-verity tool (veritysetup).
Test: Also double check small input with sha256sum manually, especially
      since the veritysetup does not work on smaller files.
Test: Unit tests
Bug: 30972906

Change-Id: Iedd2fde20d2403be763ace30ea6e03d04314b861