1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License version 2 as
7 published by the Free Software Foundation;
8
9 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
10 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
11 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
12 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
13 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
19 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
20 SOFTWARE IS DISCLAIMED.
21 */
22
23 #ifndef __SMP_H
24 #define __SMP_H
25
26 struct smp_command_hdr {
27 __u8 code;
28 } __packed;
29
30 #define SMP_CMD_PAIRING_REQ 0x01
31 #define SMP_CMD_PAIRING_RSP 0x02
32 struct smp_cmd_pairing {
33 __u8 io_capability;
34 __u8 oob_flag;
35 __u8 auth_req;
36 __u8 max_key_size;
37 __u8 init_key_dist;
38 __u8 resp_key_dist;
39 } __packed;
40
41 #define SMP_IO_DISPLAY_ONLY 0x00
42 #define SMP_IO_DISPLAY_YESNO 0x01
43 #define SMP_IO_KEYBOARD_ONLY 0x02
44 #define SMP_IO_NO_INPUT_OUTPUT 0x03
45 #define SMP_IO_KEYBOARD_DISPLAY 0x04
46
47 #define SMP_OOB_NOT_PRESENT 0x00
48 #define SMP_OOB_PRESENT 0x01
49
50 #define SMP_DIST_ENC_KEY 0x01
51 #define SMP_DIST_ID_KEY 0x02
52 #define SMP_DIST_SIGN 0x04
53
54 #define SMP_AUTH_NONE 0x00
55 #define SMP_AUTH_BONDING 0x01
56 #define SMP_AUTH_MITM 0x04
57
58 #define SMP_CMD_PAIRING_CONFIRM 0x03
59 struct smp_cmd_pairing_confirm {
60 __u8 confirm_val[16];
61 } __packed;
62
63 #define SMP_CMD_PAIRING_RANDOM 0x04
64 struct smp_cmd_pairing_random {
65 __u8 rand_val[16];
66 } __packed;
67
68 #define SMP_CMD_PAIRING_FAIL 0x05
69 struct smp_cmd_pairing_fail {
70 __u8 reason;
71 } __packed;
72
73 #define SMP_CMD_ENCRYPT_INFO 0x06
74 struct smp_cmd_encrypt_info {
75 __u8 ltk[16];
76 } __packed;
77
78 #define SMP_CMD_MASTER_IDENT 0x07
79 struct smp_cmd_master_ident {
80 __le16 ediv;
81 __le64 rand;
82 } __packed;
83
84 #define SMP_CMD_IDENT_INFO 0x08
85 struct smp_cmd_ident_info {
86 __u8 irk[16];
87 } __packed;
88
89 #define SMP_CMD_IDENT_ADDR_INFO 0x09
90 struct smp_cmd_ident_addr_info {
91 __u8 addr_type;
92 bdaddr_t bdaddr;
93 } __packed;
94
95 #define SMP_CMD_SIGN_INFO 0x0a
96 struct smp_cmd_sign_info {
97 __u8 csrk[16];
98 } __packed;
99
100 #define SMP_CMD_SECURITY_REQ 0x0b
101 struct smp_cmd_security_req {
102 __u8 auth_req;
103 } __packed;
104
105 #define SMP_CMD_MAX 0x0b
106
107 #define SMP_PASSKEY_ENTRY_FAILED 0x01
108 #define SMP_OOB_NOT_AVAIL 0x02
109 #define SMP_AUTH_REQUIREMENTS 0x03
110 #define SMP_CONFIRM_FAILED 0x04
111 #define SMP_PAIRING_NOTSUPP 0x05
112 #define SMP_ENC_KEY_SIZE 0x06
113 #define SMP_CMD_NOTSUPP 0x07
114 #define SMP_UNSPECIFIED 0x08
115 #define SMP_REPEATED_ATTEMPTS 0x09
116 #define SMP_INVALID_PARAMS 0x0a
117
118 #define SMP_MIN_ENC_KEY_SIZE 7
119 #define SMP_MAX_ENC_KEY_SIZE 16
120
121 /* LTK types used in internal storage (struct smp_ltk) */
122 enum {
123 SMP_STK,
124 SMP_LTK,
125 SMP_LTK_SLAVE,
126 };
127
smp_ltk_sec_level(struct smp_ltk * key)128 static inline u8 smp_ltk_sec_level(struct smp_ltk *key)
129 {
130 if (key->authenticated)
131 return BT_SECURITY_HIGH;
132
133 return BT_SECURITY_MEDIUM;
134 }
135
136 /* SMP Commands */
137 bool smp_sufficient_security(struct hci_conn *hcon, u8 sec_level);
138 int smp_conn_security(struct hci_conn *hcon, __u8 sec_level);
139 int smp_user_confirm_reply(struct hci_conn *conn, u16 mgmt_op, __le32 passkey);
140
141 bool smp_irk_matches(struct hci_dev *hdev, u8 irk[16], bdaddr_t *bdaddr);
142 int smp_generate_rpa(struct hci_dev *hdev, u8 irk[16], bdaddr_t *rpa);
143
144 int smp_register(struct hci_dev *hdev);
145 void smp_unregister(struct hci_dev *hdev);
146
147 #endif /* __SMP_H */
148