| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.car.encryptionrunner; |
| |
| import android.annotation.IntDef; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| /** |
| * Factory that creates encryption runner. |
| */ |
| public class EncryptionRunnerFactory { |
| |
| private EncryptionRunnerFactory() { |
| // prevent instantiation. |
| } |
| |
| @IntDef({EncryptionRunnerType.UKEY2, EncryptionRunnerType.OOB_UKEY2}) |
| public @interface EncryptionRunnerType { |
| /** Use Ukey2 as underlying key exchange. */ |
| int UKEY2 = 0; |
| /** Use Ukey2 and an out of band channel as underlying key exchange. */ |
| int OOB_UKEY2 = 1; |
| } |
| |
| /** |
| * Creates a new {@link EncryptionRunner} based on {@param type}. |
| */ |
| public static EncryptionRunner newRunner(@EncryptionRunnerType int type) { |
| switch (type) { |
| case EncryptionRunnerType.UKEY2: |
| return new Ukey2EncryptionRunner(); |
| case EncryptionRunnerType.OOB_UKEY2: |
| return new OobUkey2EncryptionRunner(); |
| default: |
| throw new IllegalArgumentException("Unknown EncryptionRunnerType: " + type); |
| } |
| } |
| |
| /** |
| * Creates a new {@link EncryptionRunner}. |
| * |
| * @deprecated Use {@link #newRunner(int)} instead. |
| */ |
| @Deprecated |
| public static EncryptionRunner newRunner() { |
| return newRunner(EncryptionRunnerType.UKEY2); |
| } |
| |
| /** |
| * Creates a new {@link EncryptionRunner} one that doesn't actually do encryption but is useful |
| * for testing. |
| */ |
| @VisibleForTesting |
| public static EncryptionRunner newDummyRunner() { |
| return new DummyEncryptionRunner(); |
| } |
| } |