kopia lustrzana https://github.com/espressif/esp-idf
48 wiersze
1.4 KiB
C
48 wiersze
1.4 KiB
C
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "esp32s2/rom/hmac.h"
|
|
#include "esp32s2/rom/ets_sys.h"
|
|
#include "esp_hmac.h"
|
|
#include "esp_crypto_lock.h"
|
|
|
|
static ets_efuse_block_t convert_key_type(hmac_key_id_t key_id) {
|
|
return ETS_EFUSE_BLOCK_KEY0 + (ets_efuse_block_t) key_id;
|
|
}
|
|
|
|
esp_err_t esp_hmac_calculate(hmac_key_id_t key_id,
|
|
const void *message,
|
|
size_t message_len,
|
|
uint8_t *hmac)
|
|
{
|
|
int hmac_ret;
|
|
if (!message || !hmac) return ESP_ERR_INVALID_ARG;
|
|
if (key_id >= HMAC_KEY_MAX) return ESP_ERR_INVALID_ARG;
|
|
|
|
esp_crypto_lock_acquire();
|
|
|
|
ets_hmac_enable();
|
|
hmac_ret = ets_hmac_calculate_message(convert_key_type(key_id), message, message_len, hmac);
|
|
ets_hmac_disable();
|
|
|
|
esp_crypto_lock_release();
|
|
|
|
if (hmac_ret != ETS_OK) {
|
|
return ESP_FAIL;
|
|
} else {
|
|
return ESP_OK;
|
|
}
|
|
|
|
}
|