github中存放公钥，git bash和tortoise分别存放私钥
git bash ：https://blog.csdn.net/xmtblog/article/details/77449521
tortoise：https://blog.csdn.net/miaomingbenxin/article/details/114359076
tortoisegit(小乌龟)常见报错：https://blog.csdn.net/GrootBaby/article/details/103874061