attestation: Implemented CryptoUtility.

BUG=brillo:737
TEST=unit, manual test against a CA

Change-Id: Id4928c6d05a6dd11d0b94a380828bbe623ffe095
Reviewed-on: https://chromium-review.googlesource.com/266919
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Tested-by: Darren Krahn <dkrahn@chromium.org>
Commit-Queue: Darren Krahn <dkrahn@chromium.org>
12 files changed
tree: 236df976e25bd9b288ec2a74fcc131a207312467
  1. client/
  2. common/
  3. server/
  4. attestation.gyp
  5. attestation_testrunner.cc
  6. OWNERS