1. 创建密钥对
命令如下，不指定文件名的话默认输出到~/.ssh/目录下：
ssh-keygen -t ed25519 -C "xxxxx@xxx.com"
ssh-keygen -C "xxxxx@xxx.com"
下面是操作例子。提示文件名和密码的地方回车可以忽略掉。
pool@VM-0-10-ubuntu:~$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/pool/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/pool/.ssh/id_rsa
Your public key has been saved in /home/pool/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:kgEqtOh511Ubj6Hs92diOC5Nlmlx5daCegHzXZjypXY pool@VM-0-10-ubuntu
The key's randomart image is:
+---[RSA 3072]----+
| . . + o |
|o .. . . = B o.o|
|o.. . + * *o+.|
|... .oo .+.*oE|
| o . .o.S. o=o.o |
| . . . o*+ |
| =+ + o |
| ...o + |
| .. |
+----[SHA256]-----+
pool@VM-0-10-ubuntu:~$ ll .ssh/
total 28
drwx------ 2 pool pool 4096 Mar 9 16:53 ./
drwxr-xr-x 33 pool pool 4096 Mar 9 15:45 ../
-rw------- 1 pool pool 411 Mar 9 15:13 id_ed25519
-rw-r--r-- 1 pool pool 101 Mar 9 15:13 id_ed25519.pub
-rw------- 1 pool pool 2610 Mar 9 16:53 id_rsa
-rw-r--r-- 1 pool pool 573 Mar 9 16:53 id_rsa.pub
-rw-r--r-- 1 pool pool 444 Mar 9 15:17 known_hosts
pool@VM-0-10-ubuntu:~$ cat .ssh/id+rsa.pub
cat: .ssh/id+rsa.pub: No such file or directory
pool@VM-0-10-ubuntu:~$ cat .ssh/id_rsa.pub
ssh-rsa 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 pool@VM-0-10-ubuntu
2.在码云设置里添加公钥
设置->安全设置->ssh公钥中
把公钥文件(id_xxx.pub)中的公钥内容全部复制到“公钥”输入框里。
下面是码云的操作界面：
设置好了之后，你的码云邮箱会收到设置公钥成功的邮件。
3. 修改git路径为SSH格式(重要)
如果以前是使用https下载的代码需要把https切换到ssh#。 不然还是会要求输入用户名和密码。
git remote set-url origin 仓库ssh地址
参考
使用公钥访问码云
使用 Ed25519 算法生成你的 SSH 密钥
