1 /** 2 * @file smp.h 3 * Security Manager Protocol implementation header 4 */ 5 6 /* 7 * Copyright (c) 2015-2016 Intel Corporation 8 * 9 * SPDX-License-Identifier: Apache-2.0 10 */ 11 12 struct bt_smp_hdr { 13 uint8_t code; 14 } __packed; 15 16 #define BT_SMP_ERR_PASSKEY_ENTRY_FAILED 0x01 17 #define BT_SMP_ERR_OOB_NOT_AVAIL 0x02 18 #define BT_SMP_ERR_AUTH_REQUIREMENTS 0x03 19 #define BT_SMP_ERR_CONFIRM_FAILED 0x04 20 #define BT_SMP_ERR_PAIRING_NOTSUPP 0x05 21 #define BT_SMP_ERR_ENC_KEY_SIZE 0x06 22 #define BT_SMP_ERR_CMD_NOTSUPP 0x07 23 #define BT_SMP_ERR_UNSPECIFIED 0x08 24 #define BT_SMP_ERR_REPEATED_ATTEMPTS 0x09 25 #define BT_SMP_ERR_INVALID_PARAMS 0x0a 26 #define BT_SMP_ERR_DHKEY_CHECK_FAILED 0x0b 27 #define BT_SMP_ERR_NUMERIC_COMP_FAILED 0x0c 28 #define BT_SMP_ERR_BREDR_PAIRING_IN_PROGRESS 0x0d 29 #define BT_SMP_ERR_CROSS_TRANSP_NOT_ALLOWED 0x0e 30 #define BT_SMP_ERR_KEY_REJECTED 0x0f 31 32 #define BT_SMP_IO_DISPLAY_ONLY 0x00 33 #define BT_SMP_IO_DISPLAY_YESNO 0x01 34 #define BT_SMP_IO_KEYBOARD_ONLY 0x02 35 #define BT_SMP_IO_NO_INPUT_OUTPUT 0x03 36 #define BT_SMP_IO_KEYBOARD_DISPLAY 0x04 37 38 #define BT_SMP_OOB_DATA_MASK 0x01 39 #define BT_SMP_OOB_NOT_PRESENT 0x00 40 #define BT_SMP_OOB_PRESENT 0x01 41 42 #define BT_SMP_MIN_ENC_KEY_SIZE CONFIG_BT_SMP_MIN_ENC_KEY_SIZE 43 #define BT_SMP_MAX_ENC_KEY_SIZE 16 44 45 #define BT_SMP_DIST_ENC_KEY 0x01 46 #define BT_SMP_DIST_ID_KEY 0x02 47 #define BT_SMP_DIST_SIGN 0x04 48 #define BT_SMP_DIST_LINK_KEY 0x08 49 50 #define BT_SMP_DIST_MASK 0x0f 51 52 #define BT_SMP_AUTH_NONE 0x00 53 #define BT_SMP_AUTH_BONDING 0x01 54 #define BT_SMP_AUTH_MITM 0x04 55 #define BT_SMP_AUTH_SC 0x08 56 #define BT_SMP_AUTH_KEYPRESS 0x10 57 #define BT_SMP_AUTH_CT2 0x20 58 59 #define BT_SMP_CMD_PAIRING_REQ 0x01 60 #define BT_SMP_CMD_PAIRING_RSP 0x02 61 struct bt_smp_pairing { 62 uint8_t io_capability; 63 uint8_t oob_flag; 64 uint8_t auth_req; 65 uint8_t max_key_size; 66 uint8_t init_key_dist; 67 uint8_t resp_key_dist; 68 } __packed; 69 70 #define BT_SMP_CMD_PAIRING_CONFIRM 0x03 71 struct bt_smp_pairing_confirm { 72 uint8_t val[16]; 73 } __packed; 74 75 #define BT_SMP_CMD_PAIRING_RANDOM 0x04 76 struct bt_smp_pairing_random { 77 uint8_t val[16]; 78 } __packed; 79 80 #define BT_SMP_CMD_PAIRING_FAIL 0x05 81 struct bt_smp_pairing_fail { 82 uint8_t reason; 83 } __packed; 84 85 #define BT_SMP_CMD_ENCRYPT_INFO 0x06 86 struct bt_smp_encrypt_info { 87 uint8_t ltk[16]; 88 } __packed; 89 90 #define BT_SMP_CMD_CENTRAL_IDENT 0x07 91 struct bt_smp_central_ident { 92 uint8_t ediv[2]; 93 uint8_t rand[8]; 94 } __packed; 95 96 #define BT_SMP_CMD_IDENT_INFO 0x08 97 struct bt_smp_ident_info { 98 uint8_t irk[16]; 99 } __packed; 100 101 #define BT_SMP_CMD_IDENT_ADDR_INFO 0x09 102 struct bt_smp_ident_addr_info { 103 bt_addr_le_t addr; 104 } __packed; 105 106 #define BT_SMP_CMD_SIGNING_INFO 0x0a 107 struct bt_smp_signing_info { 108 uint8_t csrk[16]; 109 } __packed; 110 111 #define BT_SMP_CMD_SECURITY_REQUEST 0x0b 112 struct bt_smp_security_request { 113 uint8_t auth_req; 114 } __packed; 115 116 #define BT_SMP_CMD_PUBLIC_KEY 0x0c 117 struct bt_smp_public_key { 118 uint8_t x[32]; 119 uint8_t y[32]; 120 } __packed; 121 122 #define BT_SMP_DHKEY_CHECK 0x0d 123 struct bt_smp_dhkey_check { 124 uint8_t e[16]; 125 } __packed; 126 127 #define BT_SMP_KEYPRESS_NOTIFICATION 0x0e 128 struct bt_smp_keypress_notif { 129 uint8_t type; 130 } __packed; 131 132 #define BT_SMP_NUM_CMDS 0x0f 133 134 int bt_smp_start_security(struct bt_conn *conn); 135 bool bt_smp_request_ltk(struct bt_conn *conn, uint64_t rand, uint16_t ediv, 136 uint8_t *ltk); 137 138 void bt_smp_update_keys(struct bt_conn *conn); 139 140 int bt_smp_br_send_pairing_req(struct bt_conn *conn); 141 142 int bt_smp_init(void); 143 144 int bt_smp_auth_passkey_entry(struct bt_conn *conn, unsigned int passkey); 145 int bt_smp_auth_passkey_confirm(struct bt_conn *conn); 146 int bt_smp_auth_pairing_confirm(struct bt_conn *conn); 147 int bt_smp_auth_cancel(struct bt_conn *conn); 148 149 int bt_smp_le_oob_set_tk(struct bt_conn *conn, const uint8_t *tk); 150 int bt_smp_le_oob_generate_sc_data(struct bt_le_oob_sc_data *le_sc_oob); 151 int bt_smp_le_oob_set_sc_data(struct bt_conn *conn, 152 const struct bt_le_oob_sc_data *oobd_local, 153 const struct bt_le_oob_sc_data *oobd_remote); 154 int bt_smp_le_oob_get_sc_data(struct bt_conn *conn, 155 const struct bt_le_oob_sc_data **oobd_local, 156 const struct bt_le_oob_sc_data **oobd_remote); 157 158 /** brief Verify signed message 159 * 160 * @param conn Bluetooth connection 161 * @param buf received packet buffer with message and signature 162 * 163 * @return 0 in success, error code otherwise 164 */ 165 int bt_smp_sign_verify(struct bt_conn *conn, struct net_buf *buf); 166 167 /** brief Sign message 168 * 169 * @param conn Bluetooth connection 170 * @param buf message buffer 171 * 172 * @return 0 in success, error code otherwise 173 */ 174 int bt_smp_sign(struct bt_conn *conn, struct net_buf *buf); 175 176 /** Generate IRK from Identity Root (IR) */ 177 int bt_smp_irk_get(uint8_t *ir, uint8_t *irk); 178
