1/*
2 * Copyright (C) 2018 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
17syntax = "proto2";
18
19package keystore;
20
21option optimize_for = LITE_RUNTIME;
22
23// A single operation config
24message OperationConfig {
25  // What type of encryption algorithm is the key being used in the op for.
26  optional string algorithm = 1;
27
28  // Size of the key being used in this op
29  optional int32 key_size = 2;
30
31  // Log whether the key in this op was generated, imported,
32  // securely imported, or derived.
33  optional string origin = 3;
34
35  // What auth types does this op require? If none, then no auth required.
36  optional string user_auth_type = 4;
37
38  // If user authentication is required, is the requirement time based? If it
39  // is not time based then this field will not be used and the key is per
40  // operation. Per operation keys must be user authenticated on each usage.
41  optional int32 user_auth_key_timeout = 5;
42
43  // Track which padding mode was used for this operation.
44  optional string padding = 6;
45
46  // Keep track of the digest algorithm being used.
47  optional string digest = 7;
48
49  // Check what block mode is being used depending on the mode of encryption
50  optional string block_mode = 8;
51
52  // Did the operation succeed? If it didn't, this represents bugs or
53  // error cases occurring.
54  optional bool was_op_successful = 9;
55
56  // What purpose is this operation serving? Encrypt, decrypt, sign verify?
57  optional string purpose = 10;
58
59  // Which ec curve was selected if elliptic curve cryptography is in use
60  optional string ec_curve = 11;
61
62  // Standalone or is a file system required
63  optional string key_blob_usage_reqs = 12;
64}
65
66message OperationConfigEvent {
67  optional OperationConfig op_config = 1;
68
69  // counts corresponds to the number of times each op_config in the above array
70  // was recorded during the collection period.
71  optional uint32 count = 2;
72}
73
74message OperationConfigEvents {
75    repeated OperationConfigEvent op_config_events = 1;
76}
77
78