Revert to old-style API for EC_KEY handling

Nothing using the EVP_PKEY correctly, so we should revert to the EC_KEY
and ECDSA interfaces. Unfortunately, the SSL client certificate library
uses EC_KEY directly, so just having the EVP_PKEY interface doesn't
work.

Remove the EVP_PKEY interface entirely because it just adds complexity
since the EC_KEY path will do the same thing.

Bug: 10655329
Change-Id: I97d17068297c33477b3b9f754f2713fdf258d646
4 files changed
tree: 16f055f616e5f84fa5ecf9f2cc54ba61dc4ccf3a
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/