Enhance keymaster tests

Check the key values of successful attempts.

For imported keys, the key values should match the
input values when they're returned.

For generated keys, the modulus size should be correct and the public
exponent should be correct.

Bug: 6736252
Bug: http://code.google.com/p/android/issues/detail?id=34212
Change-Id: I37ed97d36ebfbe4301b43426129928bcb53c39f8
2 files changed