| 3876b1be27e3aefde9a72eb2e4f856e94fc5f946 |
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09-Sep-2015 |
Alex Klyubin <klyubin@google.com> |
Support cross-UID access from AndroidKeyStore.
This is meant for exposing the pre-existing cross-UID access to keys
backed by the keystore service via higher-level JCA API. For example,
this lets system_server use Wi-Fi or VPN UID keys via JCA API.
To obtain a JCA AndroidKeyStore KeyStore for another UID, use the
hidden system API AndroidKeyStoreProvider.getKeyStoreForUid(uid).
To generate a key owned by another UID, invoke setUid(uid) on
KeyGenParameterSpec.Builder.
This CL does not change the security policy, such as which UID can
access/modify which UIDs' keys. The policy is that only certain system
UIDs are permitted to access keys of certain other system UIDs.
Bug: 23978113
Change-Id: Ie381530f41dc41c50d52f675fb9e68bc87c006de
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| 3ab1f04004c417397bfac8f061dc187b7b66109d |
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20-Jul-2015 |
Alex Klyubin <klyubin@google.com> |
Raw RSA Cipher relies on keymaster for padding and range checks.
This makes Android Keystore's RSA/ECB/NoPadding Cipher implementation
rely on the underlying keystore/keymaster to left-pad the input (if
necessary) and to reject invalid input. Prior to this change the
Cipher implementation attempted to do it itself, but wasn't doing it
right anyway.
This fixes a regression where Android Keystore's raw RSA Cipher
("RSA/ECB/NoPadding") refused to encrypt plaintexts of the same length
(in bytes) as RSA modulus which were nevertheless numerically smaller
than the RSA modulus.
Bug: 22599805
Change-Id: I591a8115a574eaf8f6075f29b50d93a87532c5eb
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| 25d2270704e246d897596c991a36233cdc620790 |
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25-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
Support RSA encrypt using private key and PKCS#1 paddding.
Some apps such as OpenVPN Connect for some reason generate
PKCS#1-padded RSA signatures using Cipher (initialized in
Cipher.ENCRYPT_MODE with private key!) instead of using Signature.
Unfortunately, RI supports this strange behavior and previous releases
of Android Keystore did the same. So, we have to continue supporting
this craziness.
Bug: 22083023
Change-Id: Ife3950d0d4ceb4e44e08014635312c1252878b69
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| d23dc502b0a1952887d4453cba98aa2e3d2f5009 |
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24-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
Make NONEwithECDSA truncate input when necessary.
Keymaster's implementation of ECDSA with digest NONE rejects input
longer than group size in bytes. RI's NONEwithECDSA accepts inputs
of arbitrary length by truncating them to the above size. This CL
makes Android Keystore's NONEwithECDSA do the truncation to keep
the JCA and Keymaster happy.
The change is inside AndroidKeyStoreECDSASignatureSpi$NONE. All other
small modifications are for supporting that change by making it
possible for AndroidKeyStoreSignatureSpiBase to pass in the signature
being verified into KeyStoreCryptoOperationStreamer. This in turn is
needed to make it possible for NONEwithECDSA implementation to provide
a wrapper streamer which truncates input.
Bug: 22030217
Change-Id: I26064f6df37ef8c631d70a36a356aa0b76a9ad29
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| ae6cb7aad56bb006769cd8a69b92af7236644fc1 |
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23-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
Keymaster INT, LONG and DATE tag values are unsigned.
This CL ensures that Android Keystore framework code complies with
signedness of keymaster tags. In particular:
* INT tags are unsigned 32-bit numbers, and
* LONG and DATE tags are unsigned 64-bit numbers.
The ensure compliance, KeymasterArguments and KeyCharacteristics
classes through which Android Keystore interacts with Keymaster tags
have been modified as follows:
* ENUM and INT tags which used to be conflated are now added/queried
via separate methods, because ENUM can remain represented as an int
data type whereas INT is now represented as a long data type with
permitted range being [0; 2^32).
* Methods for adding/quering LONG tags have been switched from the long
data type to the BigInteger data type and now ensure that the value
is in the permitted [0; 2^63).
* Methods for adding/querying DATE tags now ensure the Date value is
in the permitted range [0; 2^63) ms since Unix epoch.
* Methods for adding tags throw an IllegalArgumentException if the tag
type is unsuitable for the method. This is to ensure that tags with
invalid values cannot be added through similar methods (e.g., INT tag
added via an ENUM tag addition method invoked with a negative value).
Bug: 22008538
Change-Id: I6eefd5cbb561cc52d27de952691af4d9d5e1af1e
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| 00af27b7d9010eb41e45959dab7c4ff6de119897 |
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02-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
Expose AES GCM backed by Android Keystore.
Bug: 18088752
Bug: 21786749
Change-Id: Ica90491037d2920f7635195894ba18882fc4406d
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| a72b55195c23fc06d1600efe8f6aac85290c7f8f |
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12-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
Obtain entropy later in crypto operations, when possible.
This makes Android Keystore crypto operations defer pulling entropy
from provided SecureRandom until KeyStore.finish, where appropriate.
Such as when performing asymmetric encryption or generating
signatures.
Bug: 18088752
Change-Id: I4a897754e9a846214cf0995c5514f98cf0edd76b
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| 508e665ceaee3e973c17588e8830030662f24b1f |
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09-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
Support for Android Keystore Cipher.wrap and unwrap.
Cipher.wrap and .unwrap are supported by Android Keystore in released
versions of Android. The new Android Keystore provider should thus
continue supporting these for backward compatibility.
Bug: 18088752
Change-Id: I95319b13d5c4e9681f6539016e6449d73f81131d
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| 5552c89fa9cb5ac72edbbcb5a71ef14a07f5ea11 |
|
04-Jun-2015 |
Alex Klyubin <klyubin@google.com> |
RSA encrypt with private key in Android Keystore.
This adds support for RSA encryption using private key and no padding.
This mode of operation is needed because JCA does not offer an RSA
Signature primitive that does not apply padding.
Bug: 18088752
Bug: 20912868
Change-Id: I0b481b4c19916f601aa270fada5eabfb12987e8d
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
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| 4f389fd200fee9e055d3f28b20bee3132329a056 |
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29-May-2015 |
Alex Klyubin <klyubin@google.com> |
Expose RSA Cipher from Android Keystore Provider.
The RSA Cipher supports OAEPPadding, PKCS1Padding and NoPadding
padding schemes.
Bug: 18088752
Bug: 20912868
Change-Id: Ie050e12705bb553a402760a1d253fdb2247a1d50
/frameworks/base/keystore/java/android/security/keystore/AndroidKeyStoreRSACipherSpi.java
|