Find a data url with fiddler, can understand, in front of the last part of the _sig string is what mean?
Example:

https://api.jk.cn/m.api_aid=509& _mt=romeo. PageQueryDoctorRate& _sm=md5 & amp; Param=% 7 b % 22 doctorid % 3 a 22% 22% % 2235396830703% % 22% 2 c % 22 pageno 3 a1%2 c % 22 pagesize % 22% % 3 a10 7 d & amp; _sig=c86481915b055db33513c1ef45b97c7f

https://api.jk.cn/m.api? _aid=509 & amp; _mt=romeo. PageQueryDoctorRate& _sm=md5 & amp; Param=% 7 b % 22 doctorid % 3 a 22% 22% % 2235396830703% % 22% 2 c % 22 pageno 3 a2%2 c % 22 pagesize % 22% % 3 a10 7 d & amp; _sig a70447d2d3a69fb5fbd57bbc393de01=9

CodePudding user response:

https://api.jk.cn/m.api_aid=509& _mt=romeo. PageQueryDoctorRate& _sm=md5 & amp; Param=% 7 b % 22 doctorid % 3 a 22% 22% % 2235396830703% % 22% 2 c % 22 pageno 3 a1%2 c % 22 pagesize % 22% % 3 a10 7 d & amp; _sig c86481915b055db33513c1ef45b97c7f

According to the existing format, here is a parameter, named _sig, value of c86481915b055db33513c1ef45b97c7f, as to the meaning of this parameter is only server will know clearly that we guess here, a bit like a sign or target item code only, apparently, the code should be unique, with a total of 32 bit, it is possible that the MD5 encryption after the value of the analysis is for reference only...

CodePudding user response:

Identity identifier or key