Rewrite legacy methods in terms of new methods

Rewrite generate, import, get_pubkey, sign and verify using the new
keymaster 1.0 methods (generateKey, exportKey, and begin/update/finish).

This also removed DSA support from generate and import.

Change-Id: I6c6baec4aa86325a2b9c171b9883ba5a0b47236e
2 files changed
tree: 4b296ba80c0b94585c7d81747cf540cb50acd2c9
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/