GitHub 高速上手 ---- 创建密钥，连接

首先要在GitHub上创建一个帐号，因为本地Git仓库和GitHub仓库之间的传输是通过SSH加密的，所以要在本地生成一个私钥和一个密钥

命令，后面跟的邮箱。要跟你自己的；增加输出的位置；能够不用设置password一路按回车即可了

//lindeMac-mini:~ a123$ ssh-keygen -C 'yourEmail' -t rsa
lindeMac-mini:~ a123$ ssh-keygen -C '412695816@qq.com' -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/a123/.ssh/id_rsa): /Users/a123/Desktop/QY
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /Users/a123/Desktop/QY .
Your public key has been saved in /Users/a123/Desktop/QY .pub.
The key fingerprint is:
93:84:b7:37:eb:2f:71:78:02:3c:66:e7:c4:9f:dd:0e 412695816@qq.com
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|       .         |
|      ..o.       |
|       o*o+      |
|       oS*oo o . |
|         o=o= E .|
|          .=   o |
|         ..     .|
|          .o.    |
+-----------------+

在桌面就可以看到两个文件QY是私钥，
QY.pub是密钥

watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMjg4OTQzNQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="">

打开QY.pub文件（能够用Xcode打开），复制里面的内容粘贴到GitHub指定的位置，按下面步骤能够加入一个公钥

title的名字能够任意写