| /* |
| * 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; |
| |
| import android.hardware.weaver.V1_0.IWeaver; |
| import android.os.RemoteException; |
| import android.os.UserManager; |
| import android.util.ArrayMap; |
| |
| import junit.framework.AssertionFailedError; |
| |
| import java.nio.ByteBuffer; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.spec.InvalidKeySpecException; |
| import java.util.Arrays; |
| |
| import javax.crypto.SecretKeyFactory; |
| import javax.crypto.spec.PBEKeySpec; |
| |
| public class MockSyntheticPasswordManager extends SyntheticPasswordManager { |
| |
| private FakeGateKeeperService mGateKeeper; |
| private IWeaver mWeaverService; |
| |
| public MockSyntheticPasswordManager(LockSettingsStorage storage, |
| FakeGateKeeperService gatekeeper, UserManager userManager) { |
| super(storage, userManager); |
| mGateKeeper = gatekeeper; |
| } |
| |
| private ArrayMap<String, byte[]> mBlobs = new ArrayMap<>(); |
| |
| @Override |
| protected byte[] decryptSPBlob(String blobKeyName, byte[] blob, byte[] applicationId) { |
| if (mBlobs.containsKey(blobKeyName) && !Arrays.equals(mBlobs.get(blobKeyName), blob)) { |
| throw new AssertionFailedError("blobKeyName content is overwritten: " + blobKeyName); |
| } |
| ByteBuffer buffer = ByteBuffer.allocate(blob.length); |
| buffer.put(blob, 0, blob.length); |
| buffer.flip(); |
| int len; |
| len = buffer.getInt(); |
| byte[] data = new byte[len]; |
| buffer.get(data); |
| len = buffer.getInt(); |
| byte[] appId = new byte[len]; |
| buffer.get(appId); |
| long sid = buffer.getLong(); |
| if (!Arrays.equals(appId, applicationId)) { |
| throw new AssertionFailedError("Invalid application id"); |
| } |
| if (sid != 0 && mGateKeeper.getAuthTokenForSid(sid) == null) { |
| throw new AssertionFailedError("No valid auth token"); |
| } |
| return data; |
| } |
| |
| @Override |
| protected byte[] createSPBlob(String blobKeyName, byte[] data, byte[] applicationId, long sid) { |
| ByteBuffer buffer = ByteBuffer.allocate(Integer.BYTES + data.length + Integer.BYTES |
| + applicationId.length + Long.BYTES); |
| buffer.putInt(data.length); |
| buffer.put(data); |
| buffer.putInt(applicationId.length); |
| buffer.put(applicationId); |
| buffer.putLong(sid); |
| byte[] result = buffer.array(); |
| mBlobs.put(blobKeyName, result); |
| return result; |
| } |
| |
| @Override |
| protected void destroySPBlobKey(String keyAlias) { |
| } |
| |
| @Override |
| protected long sidFromPasswordHandle(byte[] handle) { |
| return new FakeGateKeeperService.VerifyHandle(handle).sid; |
| } |
| |
| @Override |
| protected byte[] scrypt(String password, byte[] salt, int N, int r, int p, int outLen) { |
| try { |
| PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), salt, 10, outLen * 8); |
| SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1"); |
| return f.generateSecret(spec).getEncoded(); |
| } catch (InvalidKeySpecException | NoSuchAlgorithmException e) { |
| e.printStackTrace(); |
| return null; |
| } |
| } |
| |
| @Override |
| protected IWeaver getWeaverService() throws RemoteException { |
| return mWeaverService; |
| } |
| |
| public void enableWeaver() { |
| mWeaverService = new MockWeaverService(); |
| initWeaverService(); |
| } |
| |
| } |