tree d7a2a7103e9d639b8708219b4c2f242521b63ef6
parent 1ece2e3744fa75bb5afc0c2199a86b0b27a4de03
author Alexander Afanasyev <alexander.afanasyev@ucla.edu> 1484106808 -0800
committer Alexander Afanasyev <alexander.afanasyev@ucla.edu> 1484267267 -0800

security: Add a set of signature verification helpers

This commit introduces a set of security::v2::verifySignature and
security::v2::verifyDigest overloads to simplify signature verification
operations.

This commit also updates operator== of util::Digest class to
constant-time `CRYPTO_memcmp` comparison to mitigate potential timing
attacks.

Change-Id: I30c5a315b612062a96b289c4a5292dd6eb3d410f