Please answer from experts who have studied Linux deeply. Why do you write the client's ssh public key in the authorized_keys file of the remote server so that no password is needed?

Question

What kind of process is this?

Answer 1

https://my.oschina.net/realfi...

Answer 2

Ruan Yifeng’s article is very clear about SSH principles and applications (1): remote login

There is such a paragraph in the article

所谓"公钥登录"，原理很简单，就是用户将自己的公钥储存在远程主机上。登录的时候，远程主机会向用户发送一段随机字符串，用户用自己的私钥加密后，再发回来。远程主机用事先储存的公钥进行解密，如果成功，就证明用户是可信的，直接允许登录shell，不再要求密码。