生成SSH key

$ ssh-keygen -t rsa -C "your_email@example.com"
Generating public/private rsa key pair.
Enter file in which to save the key
(/Users/your_user_directory/.ssh/id_rsa): 按回车键
Enter passphrase (empty for no passphrase): 输入密码
Enter same passphrase again: 再次输入密码

访达->前往->个人->.ssh 里面的id_rsa.pub就是公钥

若出现

Enter passphrase for key '/Users/ZakZhou/.ssh/id_rsa'

1. 终端输入

ssh-add -k /Users/m/.ssh/id_rsa

2. 进入 '/Users/ZakZhou/.ssh/ 文件夹，创建 config 文件，内容：

Host *
  AddKeysToAgent yes
  UseKeychain yes
  IdentityFile ~/.ssh/id_rsa