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This CL addresses the comments from API Council about Android KeyStore
KeyPairGeneratorSpec, KeyGeneratorSpec and KeyStoreParameter:
1. These abstractions should not take or hold references to Context.
2. The Builders of these abstractions should take all mandatory
parameters in their constructors rather than expose them as
setters -- only optional paratemers should be exposed via setters.
These comments cannot be addressed without deprecation in the already
launched KeyPairGeneratorSpec and KeyStoreParameter. Instead of
deprecating just the getContext methods and Builder constructors, this
CL goes for the nuclear option of deprecating KeyPairGeneratorSpec and
KeyStoreParameter as a whole and exposing all of the AndroidKeyStore
API in the new package android.security.keystore. This enables this CL
to correct all of the accrued design issues with KeyPairGeneratorSpec
(e.g., naming of certificate-related methods) and KeyStoreParameter.
This also makes the transition to API Level M more clear for existing
users of the AndroidKeyStore API. These users will only have to deal
with the new always-mandatory parameters (e.g., purposes) and
sometimes-mandatory (e.g., digests, block modes, paddings) if they
switch to the new API. Prior to this CL they would've had to deal with
this if they invoked any of the new methods of KeyPairGeneratorSpec
or KeyStoreParameter introduced in API Level M.
This CL rips out all the new API introduced into KeyPairGeneratorSpec
and KeyStoreParameter classes for Android M, thus reverting these
classes to the API launched in L MR1. This is because the new API is
now in android.security.keystore.KeyGenParameterSpec and KeyProtection
respectively.
Bug: 21039983
Change-Id: I59672b3c6ef7bc25c40aa85f1c47d9d8a05d627c
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Change-Id: Ifa29891b8ad7979cbc28c54180b9606bb1319ff0
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This changes the implementation of AndroidKeyStore-backed Cipher and
Mac to avoid throwing runtime exceptions during normal use. Runtime
exceptions will now be thrown only due to truly exceptional and
unrecoverable errors (e.g., keystore unreachable, or crypto primitive
not initialized).
This also changes the implementation of Cipher to cache any errors
encountered in Cipher.update until Cipher.doFinal which then throws
them as checked exceptions.
Bug: 20525947
Change-Id: I3c4ad57fe70abfbb817a79402f722a0208660727
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Bug: 18088752
Change-Id: I93f87cbb1cd04a4a2e34f3d544d678c92cf052ee
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Bug: 18088752
Change-Id: I7494cb6a793e2b57bb849a4253bba2803778c161
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