1 /*
2  * Copyright 2021, The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.security.metrics;
18 
19 /**
20  * Algorithm enum as defined in stats/enums/system/security/keystore2/enums.proto.
21  * @hide
22  */
23 @Backing(type="int")
24 enum Algorithm {
25     /** ALGORITHM is prepended because UNSPECIFIED exists in other enums as well. */
26     ALGORITHM_UNSPECIFIED = 0,
27 
28     /** Asymmetric algorithms. */
29     RSA = 1,
30 
31     /** 2 removed, do not reuse. */
32     EC = 3,
33 
34     /** Block cipher algorithms. */
35     AES = 32,
36     TRIPLE_DES = 33,
37 
38     /** MAC algorithms. */
39     HMAC = 128,
40 }