com/android/server/locksettings/recoverablekeystore/serialization/KeyChainSnapshotSchema.java

/*
 * 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.locksettings.recoverablekeystore.serialization;

/**
 * Describes the XML schema of the {@link android.security.keystore.recovery.KeyChainSnapshot} file.
 */
class KeyChainSnapshotSchema {
    static final String NAMESPACE = null;

    static final String OUTPUT_ENCODING = "UTF-8";

    static final String CERTIFICATE_FACTORY_TYPE = "X.509";
    static final String CERT_PATH_ENCODING = "PkiPath";

    static final String TAG_KEY_CHAIN_SNAPSHOT = "keyChainSnapshot";

    static final String TAG_SNAPSHOT_VERSION = "snapshotVersion";
    static final String TAG_COUNTER_ID = "counterId";
    static final String TAG_MAX_ATTEMPTS = "maxAttempts";
    static final String TAG_RECOVERY_KEY_MATERIAL = "recoveryKeyMaterial";
    static final String TAG_SERVER_PARAMS = "serverParams";
    static final String TAG_TRUSTED_HARDWARE_CERT_PATH = "thmCertPath";
    static final String TAG_BACKEND_PUBLIC_KEY = "backendPublicKey"; // Deprecated.

    static final String TAG_KEY_CHAIN_PROTECTION_PARAMS_LIST =
            "keyChainProtectionParamsList";
    static final String TAG_KEY_CHAIN_PROTECTION_PARAMS = "keyChainProtectionParams";
    static final String TAG_USER_SECRET_TYPE = "userSecretType";
    static final String TAG_LOCK_SCREEN_UI_TYPE = "lockScreenUiType";

    static final String TAG_KEY_DERIVATION_PARAMS = "keyDerivationParams";
    static final String TAG_ALGORITHM = "algorithm";
    static final String TAG_MEMORY_DIFFICULTY = "memoryDifficulty";
    static final String TAG_SALT = "salt";

    static final String TAG_APPLICATION_KEYS = "applicationKeysList";
    static final String TAG_APPLICATION_KEY = "applicationKey";
    static final String TAG_ALIAS = "alias";
    static final String TAG_KEY_MATERIAL = "keyMaterial";
    static final String TAG_KEY_METADATA = "keyMetadata";

    // Statics only
    private KeyChainSnapshotSchema() {}
}