Examples with OperationResult android.security.keymaster.OperationResult used on opensource projects

Example 1 with OperationResult

use of android.security.keymaster.OperationResult in project android_frameworks_base by ResurrectionRemix.

the class KeyStoreTest method testOperationPruning.

// This is a very implementation specific test and should be thrown out eventually, however it
// is nice for now to test that keystore is properly pruning operations.
public void testOperationPruning() throws Exception {
    String name = "test";
    KeymasterArguments args = new KeymasterArguments();
    args.addEnum(KeymasterDefs.KM_TAG_PURPOSE, KeymasterDefs.KM_PURPOSE_ENCRYPT);
    args.addEnum(KeymasterDefs.KM_TAG_PURPOSE, KeymasterDefs.KM_PURPOSE_DECRYPT);
    args.addEnum(KeymasterDefs.KM_TAG_ALGORITHM, KeymasterDefs.KM_ALGORITHM_AES);
    args.addEnum(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
    args.addUnsignedInt(KeymasterDefs.KM_TAG_KEY_SIZE, 256);
    args.addEnum(KeymasterDefs.KM_TAG_BLOCK_MODE, KeymasterDefs.KM_MODE_CTR);
    args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
    KeyCharacteristics outCharacteristics = new KeyCharacteristics();
    int rc = mKeyStore.generateKey(name, args, null, 0, outCharacteristics);
    assertEquals("Generate should succeed", KeyStore.NO_ERROR, rc);
    args = new KeymasterArguments();
    args.addEnum(KeymasterDefs.KM_TAG_ALGORITHM, KeymasterDefs.KM_ALGORITHM_AES);
    args.addEnum(KeymasterDefs.KM_TAG_BLOCK_MODE, KeymasterDefs.KM_MODE_CTR);
    args.addEnum(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
    OperationResult result = mKeyStore.begin(name, KeymasterDefs.KM_PURPOSE_ENCRYPT, true, args, null);
    assertEquals("Begin should succeed", KeyStore.NO_ERROR, result.resultCode);
    IBinder first = result.token;
    // Implementation detail: softkeymaster supports 16 concurrent operations
    for (int i = 0; i < 16; i++) {
        result = mKeyStore.begin(name, KeymasterDefs.KM_PURPOSE_ENCRYPT, true, args, null);
        assertEquals("Begin should succeed", KeyStore.NO_ERROR, result.resultCode);
    }
    // At this point the first operation should be pruned.
    assertEquals("Operation should be pruned", KeymasterDefs.KM_ERROR_INVALID_OPERATION_HANDLE, mKeyStore.update(first, null, new byte[] { 0x01 }).resultCode);
}

Example 2 with OperationResult

use of android.security.keymaster.OperationResult in project android_frameworks_base by ResurrectionRemix.

the class KeyStoreTest method doOperation.

private byte[] doOperation(String name, int purpose, byte[] in, KeymasterArguments beginArgs) {
    OperationResult result = mKeyStore.begin(name, purpose, true, beginArgs, null);
    assertEquals("Begin should succeed", KeyStore.NO_ERROR, result.resultCode);
    IBinder token = result.token;
    result = mKeyStore.update(token, null, in);
    assertEquals("Update should succeed", KeyStore.NO_ERROR, result.resultCode);
    assertEquals("All data should be consumed", in.length, result.inputConsumed);
    assertEquals("Finish should succeed", KeyStore.NO_ERROR, mKeyStore.finish(token, null, null).resultCode);
    return result.output;
}

Example 3 with OperationResult

use of android.security.keymaster.OperationResult in project android_frameworks_base by ResurrectionRemix.

the class KeyStoreTest method testBadToken.

public void testBadToken() throws Exception {
    IBinder token = new Binder();
    OperationResult result = mKeyStore.update(token, null, new byte[] { 0x01 });
    assertEquals("Update with invalid token should fail", KeymasterDefs.KM_ERROR_INVALID_OPERATION_HANDLE, result.resultCode);
}

Example 4 with OperationResult

use of android.security.keymaster.OperationResult in project android_frameworks_base by ResurrectionRemix.

the class AndroidKeyStoreCipherSpiBase method ensureKeystoreOperationInitialized.

private void ensureKeystoreOperationInitialized() throws InvalidKeyException, InvalidAlgorithmParameterException {
    if (mMainDataStreamer != null) {
        return;
    }
    if (mCachedException != null) {
        return;
    }
    if (mKey == null) {
        throw new IllegalStateException("Not initialized");
    }
    KeymasterArguments keymasterInputArgs = new KeymasterArguments();
    addAlgorithmSpecificParametersToBegin(keymasterInputArgs);
    byte[] additionalEntropy = KeyStoreCryptoOperationUtils.getRandomBytesToMixIntoKeystoreRng(mRng, getAdditionalEntropyAmountForBegin());
    int purpose;
    if (mKeymasterPurposeOverride != -1) {
        purpose = mKeymasterPurposeOverride;
    } else {
        purpose = mEncrypting ? KeymasterDefs.KM_PURPOSE_ENCRYPT : KeymasterDefs.KM_PURPOSE_DECRYPT;
    }
    OperationResult opResult = mKeyStore.begin(mKey.getAlias(), purpose, // permit aborting this operation if keystore runs out of resources
    true, keymasterInputArgs, additionalEntropy, mKey.getUid());
    if (opResult == null) {
        throw new KeyStoreConnectException();
    }
    // Store operation token and handle regardless of the error code returned by KeyStore to
    // ensure that the operation gets aborted immediately if the code below throws an exception.
    mOperationToken = opResult.token;
    mOperationHandle = opResult.operationHandle;
    // If necessary, throw an exception due to KeyStore operation having failed.
    GeneralSecurityException e = KeyStoreCryptoOperationUtils.getExceptionForCipherInit(mKeyStore, mKey, opResult.resultCode);
    if (e != null) {
        if (e instanceof InvalidKeyException) {
            throw (InvalidKeyException) e;
        } else if (e instanceof InvalidAlgorithmParameterException) {
            throw (InvalidAlgorithmParameterException) e;
        } else {
            throw new ProviderException("Unexpected exception type", e);
        }
    }
    if (mOperationToken == null) {
        throw new ProviderException("Keystore returned null operation token");
    }
    if (mOperationHandle == 0) {
        throw new ProviderException("Keystore returned invalid operation handle");
    }
    loadAlgorithmSpecificParametersFromBeginResult(opResult.outParams);
    mMainDataStreamer = createMainDataStreamer(mKeyStore, opResult.token);
    mAdditionalAuthenticationDataStreamer = createAdditionalAuthenticationDataStreamer(mKeyStore, opResult.token);
    mAdditionalAuthenticationDataStreamerClosed = false;
}

Example 5 with OperationResult

use of android.security.keymaster.OperationResult in project android_frameworks_base by ResurrectionRemix.

the class AndroidKeyStoreHmacSpi method ensureKeystoreOperationInitialized.

private void ensureKeystoreOperationInitialized() throws InvalidKeyException {
    if (mChunkedStreamer != null) {
        return;
    }
    if (mKey == null) {
        throw new IllegalStateException("Not initialized");
    }
    KeymasterArguments keymasterArgs = new KeymasterArguments();
    keymasterArgs.addEnum(KeymasterDefs.KM_TAG_ALGORITHM, KeymasterDefs.KM_ALGORITHM_HMAC);
    keymasterArgs.addEnum(KeymasterDefs.KM_TAG_DIGEST, mKeymasterDigest);
    keymasterArgs.addUnsignedInt(KeymasterDefs.KM_TAG_MAC_LENGTH, mMacSizeBits);
    OperationResult opResult = mKeyStore.begin(mKey.getAlias(), KeymasterDefs.KM_PURPOSE_SIGN, true, keymasterArgs, // no additional entropy needed for HMAC because it's deterministic
    null, mKey.getUid());
    if (opResult == null) {
        throw new KeyStoreConnectException();
    }
    // Store operation token and handle regardless of the error code returned by KeyStore to
    // ensure that the operation gets aborted immediately if the code below throws an exception.
    mOperationToken = opResult.token;
    mOperationHandle = opResult.operationHandle;
    // If necessary, throw an exception due to KeyStore operation having failed.
    InvalidKeyException e = KeyStoreCryptoOperationUtils.getInvalidKeyExceptionForInit(mKeyStore, mKey, opResult.resultCode);
    if (e != null) {
        throw e;
    }
    if (mOperationToken == null) {
        throw new ProviderException("Keystore returned null operation token");
    }
    if (mOperationHandle == 0) {
        throw new ProviderException("Keystore returned invalid operation handle");
    }
    mChunkedStreamer = new KeyStoreCryptoOperationChunkedStreamer(new KeyStoreCryptoOperationChunkedStreamer.MainDataStream(mKeyStore, mOperationToken));
}