content: /*
   * Copyright (C) 2018 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.backup.encryption.storage;
  
  import android.provider.BaseColumns;
  
  /** Contract for the backup encryption database. Describes tables present. */
  class BackupEncryptionDbContract {
      /**
       * Table containing tertiary keys belonging to the user. Tertiary keys are wrapped by a
       * secondary key, which never leaves {@code AndroidKeyStore} (a provider for {@link
       * java.security.KeyStore}). Each application has a tertiary key, which is used to encrypt the
       * backup data.
       */
      static class TertiaryKeysEntry implements BaseColumns {
          static final String TABLE_NAME = "tertiary_keys";
  
          /** Alias of the secondary key used to wrap the tertiary key. */
          static final String COLUMN_NAME_SECONDARY_KEY_ALIAS = "secondary_key_alias";
  
          /** Name of the package to which the tertiary key belongs. */
          static final String COLUMN_NAME_PACKAGE_NAME = "package_name";
  
          /** Encrypted bytes of the tertiary key. */
          static final String COLUMN_NAME_WRAPPED_KEY_BYTES = "wrapped_key_bytes";
      }
  }
  