1 /*
2 * Copyright (C) 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 #include <stdbool.h>
18 #include <stdint.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <uapi/trusty_uuid.h>
22
23 #include <interface/keymaster/keymaster.h>
24
25 #define TLOG_TAG "KMAccessPolicy"
26 #include <trusty_log.h>
27
28 /*
29 * Note: This access policy is replicated in
30 * trusty/user/app/keymint/generic_access_policy/lib.rs for Keymint Rust. Any
31 * updates to this access policy should be replicated there as well.
32 */
33 static uuid_t accessible_uuids[] = {
34 /* gatekeeper uuid */
35 {0x38ba0cdc,
36 0xdf0e,
37 0x11e4,
38 {0x98, 0x69, 0x23, 0x3f, 0xb6, 0xae, 0x47, 0x95}},
39 /* confirmation ui uuid */
40 {0x7dee2364,
41 0xc036,
42 0x425b,
43 {0xb0, 0x86, 0xdf, 0x0f, 0x6c, 0x23, 0x3c, 0x1b}},
44 /* unit test uuid */
45 {0xf3ba7629,
46 0xe8cc,
47 0x44a0,
48 {0x88, 0x4d, 0xf9, 0x16, 0xf7, 0x03, 0xa2, 0x00}},
49 };
50
keymaster_check_target_access_policy(uuid_t * uuid)51 bool keymaster_check_target_access_policy(uuid_t* uuid) {
52 for (auto accessible_uuid : accessible_uuids) {
53 if (memcmp(uuid, &accessible_uuid, sizeof(accessible_uuid)) == 0) {
54 return true;
55 }
56 }
57 return false;
58 }
59
keymaster_check_secure_target_access_policy_provisioning(const uuid_t * uuid)60 bool keymaster_check_secure_target_access_policy_provisioning(
61 const uuid_t* uuid) {
62 /* Not Supported */
63 return false;
64 }
65