1 // SPDX-License-Identifier: LGPL-2.1-or-later
4 * BlueZ - Bluetooth protocol stack for Linux
6 * Copyright (C) 2011-2014 Intel Corporation
7 * Copyright (C) 2002-2010 Marcel Holtmann <marcel@holtmann.org>
18 #include "src/shared/util.h"
19 #include "src/shared/queue.h"
20 #include "src/shared/crypto.h"
24 static const uint8_t empty_key[16] = { 0x00, };
25 static const uint8_t empty_addr[6] = { 0x00, };
27 static struct bt_crypto *crypto;
35 static struct queue *irk_list;
39 crypto = bt_crypto_new();
41 irk_list = queue_new();
44 void keys_cleanup(void)
46 bt_crypto_unref(crypto);
48 queue_destroy(irk_list, free);
51 void keys_update_identity_key(const uint8_t key[16])
55 irk = queue_peek_tail(irk_list);
56 if (irk && !memcmp(irk->key, empty_key, 16)) {
57 memcpy(irk->key, key, 16);
61 irk = new0(struct irk_data, 1);
63 memcpy(irk->key, key, 16);
64 if (!queue_push_tail(irk_list, irk))
69 void keys_update_identity_addr(const uint8_t addr[6], uint8_t addr_type)
73 irk = queue_peek_tail(irk_list);
74 if (irk && !memcmp(irk->addr, empty_addr, 6)) {
75 memcpy(irk->addr, addr, 6);
76 irk->addr_type = addr_type;
80 irk = new0(struct irk_data, 1);
82 memcpy(irk->addr, addr, 6);
83 irk->addr_type = addr_type;
84 if (!queue_push_tail(irk_list, irk))
89 static bool match_resolve_irk(const void *data, const void *match_data)
91 const struct irk_data *irk = data;
92 const uint8_t *addr = match_data;
93 uint8_t local_hash[3];
95 bt_crypto_ah(crypto, irk->key, addr + 3, local_hash);
97 return !memcmp(addr, local_hash, 3);
100 bool keys_resolve_identity(const uint8_t addr[6], uint8_t ident[6],
103 struct irk_data *irk;
105 irk = queue_find(irk_list, match_resolve_irk, addr);
108 memcpy(ident, irk->addr, 6);
109 *ident_type = irk->addr_type;
116 static bool match_key(const void *data, const void *match_data)
118 const struct irk_data *irk = data;
119 const uint8_t *key = match_data;
121 return !memcmp(irk->key, key, 16);
124 bool keys_add_identity(const uint8_t addr[6], uint8_t addr_type,
125 const uint8_t key[16])
127 struct irk_data *irk;
129 irk = queue_find(irk_list, match_key, key);
131 irk = new0(struct irk_data, 1);
132 memcpy(irk->key, key, 16);
133 queue_push_tail(irk_list, irk);
136 memcpy(irk->addr, addr, 6);
137 irk->addr_type = addr_type;