This enables users of AndroidKeyStore crypto to differentiate between
the key being unusable until the user is authenticated
(UserNotAuthenticatedException) and the key being permanently unusable
(KeyPermanentlyInvalidatedException). The latter is the case when the
secure lock screen has been disabled or reset, and, for keys that
require user authentication for every use, when a new fingerprint is
enrolled or all fingerprints are unenrolled.
NOTE: The KeyPermanentlyInvalidatedException subsumes/replaces the
NewFingerprintEnrolledException which has thus been removed. There
is no way to find out whether a key was permenently invalidated
specifically because a new fingerprint was added.
Bug: 20642549
Bug: 20526234
Change-Id: I0206cd99eef5c605c9c4d6afc5eea02eb3b1fe6b
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
OP_AUTH_NEEDED will be returned from begin when an operation needs
a per operation authentication before calling update. Note that the
begin call succeeds when this error is returned, the token and handle
are valid.
(cherry picked from commit dabe520a3e6b0d0c40adfd748483fa336c43c366)
Change-Id: I0ba4e997360843b5eb6c1db9c5fcd1c4d5a2c717
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
For consistency, this also switches AndroidKeyStore's Mac init/reset
implementation to the same approach as used in Cipher.
Bug: 18088752
Change-Id: Id34caf7cfe04f2058e22d8632890f762927bb31c
NativeCrypto is a conscrypt class that contained several OpenSSL
constants. NativeConstants is the new class that contains the same
thing, but the latter is automatically generated and thus won't drift
from the C headers.
Bug: 20521989
Change-Id: I45c7b9a6844a06e3ffd09be692ebf733e1ebbbcc
When AndroidKeyStore keys require used authentication, they need to be
bound to a Keymaster's Secure User ID. This ID will be set by keystore
soon. Until then, set it from the framework level (i.e., from apps
which use AndroidKeyStore).
NOTE: Accessing gatekeeper to obtain the Secure User ID will be
blocked by SELinux policy. To test this code, disable SELinux
enforcing mode.
Bug: 18088752
Change-Id: I7a3315eb52f0fc978d14d5d0e9613f2f36c6c01e
This workaround prevents use of keys with randomized encryption
(IND-CPA). Since randomized encryption is on by default, it's better
to keep it working and break non-randomized encryption (until
Keymaster is fixed).
Bug: 18088752
Change-Id: I4b11ce72cff705be41d3e66f28b507d6ddc1da79
This tracks 59f977c6988e21b3b8aa6c83428bd6ee1a98816d due to which
AndroidKeyStore is unable to provide symmetric keys because it
assumes that the digest field is not repeating.
Bug: 18088752
Change-Id: Ie8ed01449280b7c759e81aeaf2066953b0abaf2a
This removes the need to specify the three parameters of the
self-signed certificate (serial number, subject, validity range) when
generating key pairs in AndroidKeyStore. This is achieved by
providing sensible defaults for these parameters:
* serial number: 1
* subject: CN=fake
* validity range: Jan 1 1970 to Jan 1 2048.
Bug: 18088752
Change-Id: I5df918b1ef8b26ed3ddd43828c4c78c9fa58cd43
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
