This defines the String enum values based on JCA standard names for
key algorithm, block mode, padding schemes, and digests. This should
make it safer to interact with AndroidKeyStore code that uses JCA
strings. This was requested by API Council.
Bug: 18088752
Change-Id: I241d9225a13b85479d0a84e49d0a98cbc77e5817
This simplifies the AndroidKeyStore API around user authentication: no
more explicit control over which user authenticators are bound to
which keys.
User-authenticated keys with timeout are unlocked by whatever unlocks
the secure lock screen (currently, password/PIN/pattern or
fingerprint). User-authenticated keys that need authentication for
every use are unlocked by fingerprint only.
Bug: 20526234
Bug: 20642549
Change-Id: I1e5e6c988f32657d820797ad5696797477a9ebe9
This replaces int-based enums from KeyStoreKeyConstraints with
String values commonly used in JCA API.
As part of under the hood refactoring:
* KeyStoreKeyCharacteristics and KeyStoreKeyConstraints have been
merged into KeyStoreKeyProperties.
* KeymasterUtils methods operating on KeymasterArguments and
KeymasterCharacteristics have been moved to their respective
classes.
Bug: 18088752
Change-Id: I9c8b984cb3c28184adb617e34d87f2837bd1d3a1
