118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/* keys.h - Bluetooth key handling */
|
|
|
|
/*
|
|
* Copyright (c) 2015-2016 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
enum {
|
|
BT_KEYS_SLAVE_LTK = BIT(0),
|
|
BT_KEYS_IRK = BIT(1),
|
|
BT_KEYS_LTK = BIT(2),
|
|
BT_KEYS_LOCAL_CSRK = BIT(3),
|
|
BT_KEYS_REMOTE_CSRK = BIT(4),
|
|
BT_KEYS_LTK_P256 = BIT(5),
|
|
|
|
BT_KEYS_ALL = (BT_KEYS_SLAVE_LTK | BT_KEYS_IRK | \
|
|
BT_KEYS_LTK | BT_KEYS_LOCAL_CSRK | \
|
|
BT_KEYS_REMOTE_CSRK | BT_KEYS_LTK_P256),
|
|
};
|
|
|
|
enum {
|
|
BT_KEYS_ID_PENDING_ADD = BIT(0),
|
|
BT_KEYS_ID_PENDING_DEL = BIT(1),
|
|
BT_KEYS_ID_ADDED = BIT(2),
|
|
};
|
|
|
|
enum {
|
|
BT_KEYS_AUTHENTICATED = BIT(0),
|
|
BT_KEYS_DEBUG = BIT(1),
|
|
/* Bit 2 and 3 might accidentally exist in old stored keys */
|
|
BT_KEYS_SC = BIT(4),
|
|
};
|
|
|
|
struct bt_ltk {
|
|
uint8_t rand[8];
|
|
uint8_t ediv[2];
|
|
uint8_t val[16];
|
|
};
|
|
|
|
struct bt_irk {
|
|
uint8_t val[16];
|
|
bt_addr_t rpa;
|
|
};
|
|
|
|
struct bt_csrk {
|
|
uint8_t val[16];
|
|
uint32_t cnt;
|
|
};
|
|
|
|
struct bt_keys {
|
|
uint8_t id;
|
|
bt_addr_le_t addr;
|
|
uint8_t state;
|
|
uint8_t storage_start[0] __aligned(sizeof(void *));
|
|
uint8_t enc_size;
|
|
uint8_t flags;
|
|
uint16_t keys;
|
|
struct bt_ltk ltk;
|
|
struct bt_irk irk;
|
|
#if defined(CONFIG_BT_SIGNING)
|
|
struct bt_csrk local_csrk;
|
|
struct bt_csrk remote_csrk;
|
|
#endif /* BT_SIGNING */
|
|
#if !defined(CONFIG_BT_SMP_SC_PAIR_ONLY)
|
|
struct bt_ltk slave_ltk;
|
|
#endif /* CONFIG_BT_SMP_SC_PAIR_ONLY */
|
|
#if (defined(CONFIG_BT_KEYS_OVERWRITE_OLDEST))
|
|
uint32_t aging_counter;
|
|
#endif /* CONFIG_BT_KEYS_OVERWRITE_OLDEST */
|
|
};
|
|
|
|
#define BT_KEYS_STORAGE_LEN (sizeof(struct bt_keys) - \
|
|
offsetof(struct bt_keys, storage_start))
|
|
|
|
void bt_keys_foreach(int type, void (*func)(struct bt_keys *keys, void *data),
|
|
void *data);
|
|
|
|
struct bt_keys *bt_keys_get_addr(uint8_t id, const bt_addr_le_t *addr);
|
|
struct bt_keys *bt_keys_get_type(int type, uint8_t id, const bt_addr_le_t *addr);
|
|
struct bt_keys *bt_keys_find(int type, uint8_t id, const bt_addr_le_t *addr);
|
|
struct bt_keys *bt_keys_find_irk(uint8_t id, const bt_addr_le_t *addr);
|
|
struct bt_keys *bt_keys_find_addr(uint8_t id, const bt_addr_le_t *addr);
|
|
|
|
void bt_keys_add_type(struct bt_keys *keys, int type);
|
|
void bt_keys_clear(struct bt_keys *keys);
|
|
|
|
#if defined(CONFIG_BT_SETTINGS)
|
|
int bt_keys_store(struct bt_keys *keys);
|
|
#else
|
|
static inline int bt_keys_store(struct bt_keys *keys)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
enum {
|
|
BT_LINK_KEY_AUTHENTICATED = BIT(0),
|
|
BT_LINK_KEY_DEBUG = BIT(1),
|
|
BT_LINK_KEY_SC = BIT(2),
|
|
};
|
|
|
|
struct bt_keys_link_key {
|
|
bt_addr_t addr;
|
|
uint8_t flags;
|
|
uint8_t val[16];
|
|
};
|
|
|
|
struct bt_keys_link_key *bt_keys_get_link_key(const bt_addr_t *addr);
|
|
struct bt_keys_link_key *bt_keys_find_link_key(const bt_addr_t *addr);
|
|
void bt_keys_link_key_clear(struct bt_keys_link_key *link_key);
|
|
void bt_keys_link_key_clear_addr(const bt_addr_t *addr);
|
|
|
|
/* This function is used to signal that the key has been used for paring */
|
|
/* It updates the aging counter and saves it to flash if configuration option */
|
|
/* BT_KEYS_SAVE_AGING_COUNTER_ON_PAIRING is enabled */
|
|
void bt_keys_update_usage(uint8_t id, const bt_addr_le_t *addr);
|