content: /*
   * 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.example.android.autofill.service.data.source;
  
  public interface PackageVerificationDataSource {
  
      /**
       * Verifies that the signatures in the passed {@code Context} match what is currently in
       * storage. If there are no current signatures in storage for this packageName, it will store
       * the signatures from the passed {@code Context}.
       *
       * @return {@code true} if signatures for this packageName are not currently in storage
       * or if the signatures in the passed {@code Context} match what is currently in storage;
       * {@code false} if the signatures in the passed {@code Context} do not match what is
       * currently in storage or if an {@code Exception} was thrown while generating the signatures.
       */
      boolean putPackageSignatures(String packageName);
  
      /**
       * Clears all signature data currently in storage.
       */
      void clear();
  }
  