**l这几个文件是指什么

网友 djs 说：

[Sun 24 Jul 2022 06:26:21 AM EDT] Installing cert to: /**ot/cert/cf.cloud.cer
[Sun 24 Jul 2022 06:26:21 AM EDT] Installing CA to: /**ot/cert/ca.cer
[Sun 24 Jul 2022 06:26:21 AM EDT] Installing key to: /**ot/cert/cf.key
[Sun 24 Jul 2022 06:26:21 AM EDT] Installing full chain to: /**ot/cert/fullchain.cer

私钥应该是cf。key
公钥是ca.cer?cf.cloud.cer?  fullchain.cer?