blob: 1ff3857f1fe0c9904c139e05c8b70bea30d83e77 [file] [log] [blame]
/*
* Copyright (c) 2017 Intel Corporation
* Copyright (c) 2022 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "keys.h"
enum bt_mesh_nonce_type {
BT_MESH_NONCE_NETWORK,
BT_MESH_NONCE_PROXY,
BT_MESH_NONCE_SOLICITATION,
};
struct bt_mesh_sg {
const void *data;
size_t len;
};
int bt_mesh_crypto_init(void);
int bt_mesh_encrypt(const struct bt_mesh_key *key, const uint8_t plaintext[16],
uint8_t enc_data[16]);
int bt_mesh_ccm_encrypt(const struct bt_mesh_key *key, uint8_t nonce[13], const uint8_t *plaintext,
size_t len, const uint8_t *aad, size_t aad_len, uint8_t *enc_data,
size_t mic_size);
int bt_mesh_ccm_decrypt(const struct bt_mesh_key *key, uint8_t nonce[13], const uint8_t *enc_data,
size_t len, const uint8_t *aad, size_t aad_len, uint8_t *plaintext,
size_t mic_size);
int bt_mesh_aes_cmac_mesh_key(const struct bt_mesh_key *key, struct bt_mesh_sg *sg, size_t sg_len,
uint8_t mac[16]);
int bt_mesh_aes_cmac_raw_key(const uint8_t key[16], struct bt_mesh_sg *sg, size_t sg_len,
uint8_t mac[16]);
int bt_mesh_sha256_hmac_raw_key(const uint8_t key[32], struct bt_mesh_sg *sg, size_t sg_len,
uint8_t mac[32]);
int bt_mesh_s1(const char *m, size_t m_len, uint8_t salt[16]);
static inline int bt_mesh_s1_str(const char *m, uint8_t salt[16])
{
return bt_mesh_s1(m, strlen(m), salt);
}
int bt_mesh_s2(const char *m, size_t m_len, uint8_t salt[32]);
int bt_mesh_k1(const uint8_t *ikm, size_t ikm_len, const uint8_t salt[16], const char *info,
uint8_t okm[16]);
int bt_mesh_k2(const uint8_t n[16], const uint8_t *p, size_t p_len, uint8_t net_id[1],
struct bt_mesh_key *enc_key, struct bt_mesh_key *priv_key);
int bt_mesh_k3(const uint8_t n[16], uint8_t out[8]);
int bt_mesh_k4(const uint8_t n[16], uint8_t out[1]);
int bt_mesh_k5(const uint8_t *n, size_t n_len, const uint8_t salt[32], uint8_t *p, uint8_t out[32]);
int bt_mesh_id128(const uint8_t n[16], const char *s, enum bt_mesh_key_type type,
struct bt_mesh_key *out);
static inline int bt_mesh_identity_key(const uint8_t net_key[16], struct bt_mesh_key *identity_key)
{
return bt_mesh_id128(net_key, "nkik", BT_MESH_KEY_TYPE_ECB, identity_key);
}
static inline int bt_mesh_beacon_key(const uint8_t net_key[16], struct bt_mesh_key *beacon_key)
{
return bt_mesh_id128(net_key, "nkbk", BT_MESH_KEY_TYPE_CMAC, beacon_key);
}
static inline int bt_mesh_private_beacon_key(const uint8_t net_key[16],
struct bt_mesh_key *private_beacon_key)
{
return bt_mesh_id128(net_key, "nkpk", BT_MESH_KEY_TYPE_ECB, private_beacon_key);
}
int bt_mesh_beacon_auth(const struct bt_mesh_key *beacon_key, uint8_t flags,
const uint8_t net_id[8], uint32_t iv_index, uint8_t auth[8]);
static inline int bt_mesh_app_id(const uint8_t app_key[16], uint8_t app_id[1])
{
return bt_mesh_k4(app_key, app_id);
}
int bt_mesh_session_key(const uint8_t dhkey[32], const uint8_t prov_salt[16],
struct bt_mesh_key *session_key);
int bt_mesh_prov_nonce(const uint8_t dhkey[32], const uint8_t prov_salt[16], uint8_t nonce[13]);
int bt_mesh_dev_key(const uint8_t dhkey[32], const uint8_t prov_salt[16], uint8_t dev_key[16]);
int bt_mesh_prov_salt(uint8_t algorithm, const uint8_t *conf_salt, const uint8_t *prov_rand,
const uint8_t *dev_rand, uint8_t *prov_salt);
int bt_mesh_net_obfuscate(uint8_t *pdu, uint32_t iv_index, const struct bt_mesh_key *privacy_key);
int bt_mesh_net_encrypt(const struct bt_mesh_key *key, struct net_buf_simple *buf,
uint32_t iv_index, enum bt_mesh_nonce_type type);
int bt_mesh_net_decrypt(const struct bt_mesh_key *key, struct net_buf_simple *buf,
uint32_t iv_index, enum bt_mesh_nonce_type type);
struct bt_mesh_app_crypto_ctx {
bool dev_key;
uint8_t aszmic;
uint16_t src;
uint16_t dst;
uint32_t seq_num;
uint32_t iv_index;
const uint8_t *ad;
};
int bt_mesh_app_encrypt(const struct bt_mesh_key *key, const struct bt_mesh_app_crypto_ctx *ctx,
struct net_buf_simple *buf);
int bt_mesh_app_decrypt(const struct bt_mesh_key *key, const struct bt_mesh_app_crypto_ctx *ctx,
struct net_buf_simple *buf, struct net_buf_simple *out);
uint8_t bt_mesh_fcs_calc(const uint8_t *data, uint8_t data_len);
bool bt_mesh_fcs_check(struct net_buf_simple *buf, uint8_t received_fcs);
int bt_mesh_virtual_addr(const uint8_t virtual_label[16], uint16_t *addr);
int bt_mesh_prov_conf_salt(uint8_t algorithm, const uint8_t conf_inputs[145], uint8_t *salt);
int bt_mesh_prov_conf_key(uint8_t algorithm, const uint8_t *k_input, const uint8_t *conf_salt,
uint8_t *conf_key);
int bt_mesh_prov_conf(uint8_t algorithm, const uint8_t *conf_key, const uint8_t *prov_rand,
const uint8_t *auth, uint8_t *conf);
int bt_mesh_prov_decrypt(struct bt_mesh_key *key, uint8_t nonce[13], const uint8_t data[25 + 8],
uint8_t out[25]);
int bt_mesh_prov_encrypt(struct bt_mesh_key *key, uint8_t nonce[13], const uint8_t data[25],
uint8_t out[25 + 8]);
int bt_mesh_pub_key_gen(void);
const uint8_t *bt_mesh_pub_key_get(void);
int bt_mesh_dhkey_gen(const uint8_t *pub_key, const uint8_t *priv_key, uint8_t *dhkey);
int bt_mesh_beacon_decrypt(const struct bt_mesh_key *pbk, const uint8_t random[13],
const uint8_t data[5], const uint8_t expected_auth[8], uint8_t out[5]);
int bt_mesh_beacon_encrypt(const struct bt_mesh_key *pbk, uint8_t flags, uint32_t iv_index,
const uint8_t random[13], uint8_t data[5], uint8_t auth[8]);