漫画：什么是 HTTPS 协议？
https://zhuanlan.zhihu.com/p/57142784
https单向认证和双向认证
https://blog.csdn.net/duanbokan/article/details/50847612
SSL双向认证和SSL单向认证的区别
https://www.wosign.com/FAQ/faq2016-0216-01.htm
基于openssl的单向和双向认证
https://www.cnblogs.com/Anker/p/6018032.html
How to non-interactively create selfsigned SSL key and certificate files with openssl?
https://www.jianshu.com/p/6de78dc23b9a
mysql_ssl_rsa_setup - 创建SSL / RSA文件
https://www.docs4dev.com/docs/zh/mysql/5.7/reference/mysql-ssl-rsa-setup.html
SSL/TLS 双向认证(一) -- SSL/TLS工作原
https://blog.csdn.net/wuliganggang/article/details/78428866理
How To Configure SSL/TLS for MySQL on Ubuntu 16.04
https://www.digitalocean.com/community/tutorials/how-to-configure-ssl-tls-for-mysql-on-ubuntu-16-04
基于OpenSSL自建CA和颁发SSL证书
https://segmentfault.com/a/1190000002569859
openssl系列教程
https://www.cnblogs.com/f-ck-need-u/p/7048359.html#blogopenssl
关于ssl：如何使用openssl创建自签名证书
https://www.codenong.com/10175812
使用openssl生成X.509v3版https自签名证书
https://github.com/shenghuofei/GET-TLS-CRT
https://www.fullstackmemo.com/2018/05/10/openssl-gen-https-self-signed-cer
rancher搭建之自签名ssl证书生成教程
https://www.rancher.cn/docs/rancher/v2.x/cn/install-prepare/self-signed-ssl
自建CA及证颁发证书shell脚本
https://zhaochj.github.io/2016/04/30/2016-04-30-built-CA-and-certificate
使用OpenSSL生成自签名证书
https://www.lotlab.org/2018/03/28/%E4%BD%BF%E7%94%A8openssl%E7%94%9F%E6%88%90%E8%87%AA%E7%AD%BE%E5%90%8D%E8%AF%81%E4%B9%A6
