https://blog.wongcw.com/2021/04/15/%e6%b7%98%e6%b1%b0sha-1%ef%bc%9a%e5%be%ae%e8%bb%9f%e5%ae%9a%e6%96%bc2021%e5%b9%b45%e6%9c%889%e6%97%a5%e5%85%a8%e9%9d%a2%e8%bd%89%e5%90%91sha-2/