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
The code in question talks to KeyStore which returns error codes
which are a mix of keystore and keymaster error codes. To better
match the layering of KeyStore on top of keystore and keymaster,
this CL renames KeymasterException into KeyStoreException. It also
adds human-readable error messages to exceptions raised by keystore
rather than keymaster (e.g., key not found).
Bug: 18088752
Change-Id: I4cd1235e16518c9f2e8c5557a457774c6e687b88
This factory provides a way to obtain information about a SecretKey
backed by AndroidKeyStore. The information is provided in a form of an
instance of KeyStoreKeySpec class.
EXAMPLE
SecretKeyFactory factory = SecretKeyFactory.getInstance(
key.getAlgorithm(), "AndroidKeyStore");
KeyStoreKeySpec keySpec =
factory.getKeySpec(key, KeyStoreKeySpec.class);
Bug: 18088752
Change-Id: I26c9dd544f80230fe7039501eeb471eaf875452b
This also adds the MAC length constraint on imported HMAC keys. HMAC
doesn't work without this constraint at the moment.
Bug: 18088752
Change-Id: I8613f58f5d2a84df00bcf6179d13e30619440330
