10a7ce71fSopenharmony_ci/*
20a7ce71fSopenharmony_ci * Copyright (c) 2022 HiSilicon (Shanghai) Technologies CO., LIMITED.
30a7ce71fSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
40a7ce71fSopenharmony_ci * you may not use this file except in compliance with the License.
50a7ce71fSopenharmony_ci * You may obtain a copy of the License at
60a7ce71fSopenharmony_ci *
70a7ce71fSopenharmony_ci *     http://www.apache.org/licenses/LICENSE-2.0
80a7ce71fSopenharmony_ci *
90a7ce71fSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
100a7ce71fSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
110a7ce71fSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
120a7ce71fSopenharmony_ci * See the License for the specific language governing permissions and
130a7ce71fSopenharmony_ci * limitations under the License.
140a7ce71fSopenharmony_ci */
150a7ce71fSopenharmony_ci
160a7ce71fSopenharmony_ci#ifndef IOT_HMAC_H
170a7ce71fSopenharmony_ci#define IOT_HMAC_H
180a7ce71fSopenharmony_ci
190a7ce71fSopenharmony_ci/**
200a7ce71fSopenharmony_ci * This file make use the hmac to make mqtt pwd.The method is use the date string to hash the device passwd .
210a7ce71fSopenharmony_ci * Take care that this implement depends on the hmac of the mbedtls
220a7ce71fSopenharmony_ci*/
230a7ce71fSopenharmony_ci
240a7ce71fSopenharmony_ci/**
250a7ce71fSopenharmony_ci * This function used to generate the passwd for the mqtt to connect the HuaweiIoT platform
260a7ce71fSopenharmony_ci * @param content: This is the content for the hmac,and usually it is the device passwd set or get from the Iot Platform
270a7ce71fSopenharmony_ci * @param content_len: The length of the content
280a7ce71fSopenharmony_ci * @param key: This is the key for the hmac, and usually it is the time,
290a7ce71fSopenharmony_ci * used in the client_id:the format is：yearmonthdatehour:like 1970010100
300a7ce71fSopenharmony_ci * @param key_len: The length of the key
310a7ce71fSopenharmony_ci * @param buf: used to storage the hmac code
320a7ce71fSopenharmony_ci * @param buf_len:the buf length
330a7ce71fSopenharmony_ci * @return:0 success while others failed
340a7ce71fSopenharmony_ci */
350a7ce71fSopenharmony_ciint HmacGeneratePwd(unsigned char *content, int contentLen, unsigned char *key, int keyLen,
360a7ce71fSopenharmony_ci                    unsigned char *buf)
370a7ce71fSopenharmony_ci#endif