执行 sudo git push -u origin master时出现错误 Permis

一：

　　执行　sudo git push -u origin master时出现错误    Permission denied (public key) 。

二：

      1.添加个人密钥，使用命令：

　　　　 ssh-add ~/learngit/taven

        2.使用ssh -v git@github.com测试，能够看到验证经过：
　　　　debug1: Authentication succeeded (publickey).

待解决问题

taven@taven-Aspire-E5-551G:~$ ssh-add ~/learngit/taven.pub
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0644 for '/home/taven/learngit/taven.pub' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
taven@taven-Aspire-E5-551G:~$ cd learngit/
taven@taven-Aspire-E5-551G:~/learngit$ ls
readme.txt  taven  taven.pub
taven@taven-Aspire-E5-551G:~/learngit$ sudo git push -u origin master
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
taven@taven-Aspire-E5-551G:~/learngit$