1/*
2 * Copyright (C) 2012 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#pragma once
18
19// clang-format off
20
21#define KEYMASTER_PORT "com.android.trusty.keymaster"
22#define KEYMASTER_MAX_BUFFER_LENGTH 4096
23
24// Commands
25enum keymaster_command : uint32_t {
26    KEYMASTER_RESP_BIT              = 1,
27    KEYMASTER_STOP_BIT              = 2,
28    KEYMASTER_REQ_SHIFT             = 2,
29
30    KM_GENERATE_KEY                 = (0 << KEYMASTER_REQ_SHIFT),
31    KM_BEGIN_OPERATION              = (1 << KEYMASTER_REQ_SHIFT),
32    KM_UPDATE_OPERATION             = (2 << KEYMASTER_REQ_SHIFT),
33    KM_FINISH_OPERATION             = (3 << KEYMASTER_REQ_SHIFT),
34    KM_ABORT_OPERATION              = (4 << KEYMASTER_REQ_SHIFT),
35    KM_IMPORT_KEY                   = (5 << KEYMASTER_REQ_SHIFT),
36    KM_EXPORT_KEY                   = (6 << KEYMASTER_REQ_SHIFT),
37    KM_GET_VERSION                  = (7 << KEYMASTER_REQ_SHIFT),
38    KM_ADD_RNG_ENTROPY              = (8 << KEYMASTER_REQ_SHIFT),
39    KM_GET_SUPPORTED_ALGORITHMS     = (9 << KEYMASTER_REQ_SHIFT),
40    KM_GET_SUPPORTED_BLOCK_MODES    = (10 << KEYMASTER_REQ_SHIFT),
41    KM_GET_SUPPORTED_PADDING_MODES  = (11 << KEYMASTER_REQ_SHIFT),
42    KM_GET_SUPPORTED_DIGESTS        = (12 << KEYMASTER_REQ_SHIFT),
43    KM_GET_SUPPORTED_IMPORT_FORMATS = (13 << KEYMASTER_REQ_SHIFT),
44    KM_GET_SUPPORTED_EXPORT_FORMATS = (14 << KEYMASTER_REQ_SHIFT),
45    KM_GET_KEY_CHARACTERISTICS      = (15 << KEYMASTER_REQ_SHIFT),
46    KM_ATTEST_KEY                   = (16 << KEYMASTER_REQ_SHIFT),
47    KM_UPGRADE_KEY                  = (17 << KEYMASTER_REQ_SHIFT),
48    KM_CONFIGURE                    = (18 << KEYMASTER_REQ_SHIFT),
49};
50
51#ifdef __ANDROID__
52
53/**
54 * keymaster_message - Serial header for communicating with KM server
55 * @cmd: the command, one of keymaster_command.
56 * @payload: start of the serialized command specific payload
57 */
58struct keymaster_message {
59    uint32_t cmd;
60    uint8_t payload[0];
61};
62
63#endif
64