1. 建立公钥和私钥

ps：公钥放在github上面的，私钥放在自己本地电脑 ；

先生成密钥：打开 gitbash 输入命令：

ssh-keygen -t rsa -b 4096 -C "zhulongxu2022@163.com"

结果：

Generating public/private rsa key pair.
Enter file in which to save the key (/c/Users/zhulo/.ssh/id_rsa):
Created directory '/c/Users/zhulo/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /c/Users/zhulo/.ssh/id_rsa
Your public key has been saved in /c/Users/zhulo/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:zrhuxX/87PmZODzZq1lGIn7TTq1Fqzh0v4IlcAscftI zhulongxu2022@163.com
The key's randomart image is:
+---[RSA 4096]----+
|                 |
|         .       |
|        o o      |
|         * E     |
|       .S *... ..|
|       +o .+.o+.o|
|      ..o..o*o+*o|
|      ..  .o=BX*o|
|     oo    o.B@B+|
+----[SHA256]-----+

有如上代码表示成功；