/*
 * Copyright (C) 2021 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.
 */

syntax = "proto2";

package android.system.security.keystore2;

// Logging constants re-used by multiple atoms related to keystore2

enum SecurityLevelEnum {
    // Unspecified takes 0. Other values are incremented by 1 compared to keymint spec.
    SECURITY_LEVEL_UNSPECIFIED = 0;
    SECURITY_LEVEL_SOFTWARE = 1;
    SECURITY_LEVEL_TRUSTED_ENVIRONMENT = 2;
    SECURITY_LEVEL_STRONGBOX = 3;
    SECURITY_LEVEL_KEYSTORE = 4;
}

enum Algorithm {
    // ALGORITHM is prepended because UNSPECIFIED exists in other enums as well.
    ALGORITHM_UNSPECIFIED = 0;
    // Asymmetric algorithms.
    RSA = 1;
    // 2 removed, do not reuse.
    EC = 3;
    // Block cipher algorithms
    AES = 32;
    TRIPLE_DES = 33;
    // MAC algorithms
    HMAC = 128;
};