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fix(ble): fixed the assert issue when using tinycrypt on ESP32-C2

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(cherry picked from commit ac5d14d954)

Co-authored-by: zhaoweiliang <zhaoweiliang@espressif.com>
This commit is contained in:
Zhao Wei Liang
2025-12-05 09:51:28 +08:00
committed by BOT
parent bf85b11d82
commit 4bc1fc8b91
1 changed files with 31 additions and 3 deletions
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components/bt/controller/esp32c2/bt.c
+31 -3
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@@ -230,6 +230,10 @@ static void esp_bt_ctrl_log_partition_get_and_erase_first_block(void);
#if CONFIG_FREERTOS_USE_TICKLESS_IDLE
static bool esp_bt_check_wakeup_by_bt(void);
#endif // CONFIG_FREERTOS_USE_TICKLESS_IDLE
#if (CONFIG_BT_CONTROLLER_ONLY) && (CONFIG_BT_LE_SM_SC) && (!CONFIG_BT_LE_CRYPTO_STACK_MBEDTLS)
#include "tinycrypt/ecc.h"
static int ecc_rand_func(uint8_t *dst, unsigned int len);
#endif // (CONFIG_BT_CONTROLLER_ONLY) && (CONFIG_BT_LE_SM_SC) && (!CONFIG_BT_LE_CRYPTO_STACK_MBEDTLS)
/* Local variable definition
***************************************************************************
*/
@@ -1022,6 +1026,9 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
ESP_LOGW(NIMBLE_PORT_LOG_TAG, "hci transport init failed %d", ret);
goto free_controller;
}
#if (CONFIG_BT_CONTROLLER_ONLY) && (CONFIG_BT_LE_SM_SC) && (!CONFIG_BT_LE_CRYPTO_STACK_MBEDTLS)
uECC_set_rng(ecc_rand_func);
#endif // (CONFIG_BT_CONTROLLER_ONLY) && (CONFIG_BT_LE_SM_SC) && (!CONFIG_BT_LE_CRYPTO_STACK_MBEDTLS)
return ESP_OK;
free_controller:
hci_transport_deinit();
@@ -1455,6 +1462,27 @@ static mbedtls_ecp_keypair keypair;
#if CONFIG_BT_LE_SM_SC
#include "tinycrypt/cmac_mode.h"
#include "tinycrypt/ecc_dh.h"
/* Used by uECC to get random data */
static int ecc_rand_func(uint8_t *dst, unsigned int len)
{
int offset_cnt = 0;
uint8_t *u8ptr = dst;
uint64_t random_64 = 0;
while(len > 0) {
random64 = (uint64_t)esp_random();
random64 = (random64 << 32)| (uint64_t)esp_random();;
offset_cnt = len < sizeof(uint64_t) ? len : sizeof(uint64_t);
memcpy(u8ptr, &random64, offset_cnt);
len -= offset_cnt;
u8ptr += offset_cnt;
}
return 1;
}
#endif // CONFIG_BT_LE_SM_SC
#endif // CONFIG_BT_LE_CRYPTO_STACK_MBEDTLS
@@ -1546,11 +1574,11 @@ exit:
}
#else
if (uECC_valid_public_key(pk, &curve_secp256r1) < 0) {
if (uECC_valid_public_key(pk, uECC_secp256r1()) < 0) {
return BLE_SM_KEY_ERR;
}
rc = uECC_shared_secret(pk, priv, dh, &curve_secp256r1);
rc = uECC_shared_secret(pk, priv, dh, uECC_secp256r1());
if (rc == TC_CRYPTO_FAIL) {
return BLE_SM_KEY_ERR;
}
@@ -1626,7 +1654,7 @@ int ble_sm_alg_gen_key_pair(uint8_t *pub, uint8_t *priv)
return BLE_SM_KEY_ERR;
}
#else
if (uECC_make_key(pk, priv, &curve_secp256r1) != TC_CRYPTO_SUCCESS) {
if (uECC_make_key(pk, priv, uECC_secp256r1()) != TC_CRYPTO_SUCCESS) {
return BLE_SM_KEY_ERR;
}
#endif // CONFIG_BT_LE_CRYPTO_STACK_MBEDTLS