tree d868e09364fbbfcd59136e350dafddf49d92eab3
parent 605cfcf37b2f3e5572d491f72644741a7e2bd18d
author Alex Klyubin <klyubin@google.com> 1433455354 -0700
committer Alex Klyubin <klyubin@google.com> 1433455803 -0700

Make fewer assumptions in AndroidKeyStoreTest.

This removes the following assumptions from the test:
* PrivateKey instances returned by Android Keystore are instances of
  ECPrivateKey or RSAPrivateKey. The assumption is wrong because these
  two interfaces require that key material is exported. The correct
  approach is to require only that the keys are instances of
  PrivateKey and ECKey or RSAKey.
* RSA Cipher.getBlockSize returns the size of RSA modulus in bytes.
  This is not always the case. It's best to explicitly use modulus
  size in testKeyStore_Encrypting_RSA_NONE_NOPADDING.

Bug: 18088752
Change-Id: I323f67a0a22ac068deeaae873bfe7e8f66a2254f