1、公钥与私钥的概念:
https://help.aliyun.com/knowledge_detail/42216.html
2、不同服务器安装SSL服务
http://www.west.cn/faq/list.asp?unid=1406
3、nginx配置ssl:
http://blog.csdn.net/black_ox/article/details/52756880
http://blog.csdn.net/onepieceyuan/article/details/53405948
nginx平滑升级添加ssl实现站内https
http://www.open-open.com/lib/view/open1451624143370.html
4、CSR生成工具:
https://myssl.com/csr_create.html