1 /*
2  * Copyright 2015 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 #ifndef GATEKEEPER_PASSWORD_HANDLE_H_
18 #define GATEKEEPER_PASSWORD_HANDLE_H_
19 
20 #define HANDLE_FLAG_THROTTLE_SECURE 1
21 
22 #define HANDLE_VERSION_THROTTLE 2
23 
24 namespace gatekeeper {
25 
26 typedef uint64_t secure_id_t;
27 typedef uint64_t salt_t;
28 /**
29  * structure for easy serialization
30  * and deserialization of password handles.
31  */
32 static const uint8_t HANDLE_VERSION = 2;
33 struct __attribute__ ((__packed__)) password_handle_t {
34     // fields included in signature
35     uint8_t version;
36     secure_id_t user_id;
37     uint64_t flags;
38 
39     // fields not included in signature
40     salt_t salt;
41     uint8_t signature[32];
42 
43     bool hardware_backed;
44 };
45 }
46 
47 #endif // GATEKEEPER_PASSWORD_HANDLE_H_
48