| /* |
| * Copyright (C) 2017 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 com.android.server.locksettings.recoverablekeystore; |
| |
| import android.security.keystore.KeyProtection; |
| |
| import java.io.IOException; |
| import java.security.KeyStoreException; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.UnrecoverableEntryException; |
| |
| import javax.crypto.SecretKey; |
| |
| /** |
| * Stores wrapped keys to disk, so they can be synced on the next screen unlock event. |
| * |
| * @hide |
| */ |
| public interface RecoverableKeyStorage { |
| |
| /** |
| * Writes {@code wrappedKey} to disk, keyed by the application's uid and the {@code alias}. |
| * |
| * @throws IOException if an error occurred writing to disk. |
| * |
| * @hide |
| */ |
| void persistToDisk(String alias, WrappedKey wrappedKey) throws IOException; |
| |
| /** |
| * Imports {@code key} into AndroidKeyStore, keyed by the application's uid and |
| * the {@code alias}. |
| * |
| * @param alias The alias of the key. |
| * @param key The key. |
| * @param keyProtection Protection params denoting what the key can be used for. (e.g., what |
| * Cipher modes, whether for encrpyt/decrypt or signing, etc.) |
| * @throws KeyStoreException if an error occurred loading the key into the AndroidKeyStore. |
| * |
| * @hide |
| */ |
| void importIntoAndroidKeyStore(String alias, SecretKey key, KeyProtection keyProtection) throws |
| KeyStoreException; |
| |
| /** |
| * Loads a key handle from AndroidKeyStore. |
| * |
| * @param alias Alias of the key to load. |
| * @return The key handle. |
| * @throws KeyStoreException if an error occurred loading the key from AndroidKeyStore. |
| * |
| * @hide |
| */ |
| SecretKey loadFromAndroidKeyStore(String alias) throws KeyStoreException, |
| NoSuchAlgorithmException, |
| UnrecoverableEntryException; |
| |
| /** |
| * Removes the entry with the given {@code alias} from AndroidKeyStore. |
| * |
| * @throws KeyStoreException if an error occurred deleting the key from AndroidKeyStore. |
| * |
| * @hide |
| */ |
| void removeFromAndroidKeyStore(String alias) throws KeyStoreException; |
| } |