检查SSH keys的设置
$ cd ~/.ssh/
如果显示”No such file or directory”，跳到第三步，否则继续。
备份和移除原来的SSH key设置
如果已经存在key文件，需要备份该数据并删除之
$ ls id_rsa id_rsa.pub known_hosts $ mkdir key_backup $ cp id_rsa* key_backup/ $ rm id_rsa*
生成新的SSH key
输入下面的代码，可以生成新的key文件，只需要使用默认的设置即可，当需要输入文件名的时候，回车即可
$ ssh-keygen -t rsa -C "你的邮箱@qq.com" Generating public/private rsa key pair. Enter file in which to save the key (/c/Users/WX/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /c/Users/WX/.ssh/id_rsa. Your public key has been saved in /c/Users/WX/.ssh/id_rsa.pub. The key fingerprint is: 1d:cc:7e:b3:7e:92:f7:ab:c6:75:56:73:62:30:bc:8c 你的邮箱@qq.com The key's randomart image is: +--[ RSA 2048]----+ | . | | o + | | +o + | | oE.o o.o| | S o o. .+| | . o .o| | o....| | .ooo | | o=.oo| +-----------------+
Enter passphrase (empty for no passphrase):这里可以输入密码，在登录时验证
添加SSH key到GitHub
用文本编辑工具打开id_rsa.pub文件，如果看不到这个文件，你需要设置显示隐藏文件。准确的复制这个文件的内容，才能保证设置的成功。
在GitHub的主页上点击设置按钮，选择SSH Keys项，把复制的内容粘贴进去，然后点击Add Key按钮即可，Title任意选择。
测试一下
输入下面命令，测试是否设置成功（第一次登录）
$ ssh -T git@github.com The authenticity of host 'github.com (192.30.255.112)' can't be established. RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'github.com,192.30.255.112' (RSA) to the list of know n hosts. Enter passphrase for key '/c/Users/dyf/.ssh/id_rsa':（如果上一步设置密码 这里需要输入） Hi dyf007! You've successfully authenticated, but GitHub does not provide shell access.
参考：http://codepub.cn/2015/06/02/Windows-client-configuration-of-SSH-public-key-on-GitHub/ （这里有设置多个sshKey的说明）