xref: /vendor/hisilicon/hispark_pegasus/demo/iottencent_demo/iot_hmac.h

/*
 * Copyright (c) 2022 HiSilicon (Shanghai) Technologies CO., LIMITED.
 * 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.
 */

#ifndef IOT_HMAC_H
#define IOT_HMAC_H
/**
 * This function used to generate the passwd for the mqtt to connect the HW IoT platform
 * @param content: This is the content for the hmac,
 * and usually it is the device passwd set or get from the Iot Platform
 * @param content_len: The length of the content
 * @param key: This is the key for the hmac, and usually it is the time used in the client_id:
 * the format is：yearmonthdatehour:like 1970010100
 * @param key_len: The length of the key
 * @param buf: used to storage the hmac code
 * @param buf_len:the buf length
 * @return:0 success while others failed
*/
int HmacGeneratePwd(const unsigned char *content, int contentLen, const unsigned char *key,
    int keyLen, unsigned char *buf);
#endif