tree 7d806043753cba615286cc16a5eca90f3eee4e5d
parent 14bc1c58d4b194ac201b0ed7d04d6f30890ff4a2
author Alex Klyubin <klyubin@google.com> 1430855870 -0700
committer Alex Klyubin <klyubin@google.com> 1431021010 -0700

Check parameters in KeyGenerator.init.

KeyGenerator.init is supposed to check whether all provided parameters
are OK. This is because KeyGenerator.generateKey cannot throw checked
exceptions. This CL makes AndroidKeyStore KeyGenerator implementation
do just that. Unfortunately, keymaster/kestore doesn't provide a way
to check whether all the parameters are OK without actually generating
a key. Thus, this KeyGenerator does its best inside init method
(before Keymaster is called), and then surfaces any remaining issues
(flagged by Keymaster/keystore) as unchecked IllegalStateException.

Bug: 18088752
Change-Id: I9a04da880dcbe26c37f41d1477e41bdc74db04c9