SSH 附录: ssh 文件权限管理
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取自 https://superuser.com/questions/215504/permissions-on-private-key-in-ssh-folder

删除了部分内容

+--------------------------+-------------+-------------+
| Directory or File        | Recommended | Mandatory   |
|                          | Permissions | Permissions |
+--------------------------+-------------+-------------+
| | ~/.ssh/                | 700         |             |
+--------------------------+-------------+-------------+
| | ~/.ssh/authorized_keys | 600         |             |
+--------------------------+-------------+-------------+
| | ~/.ssh/config          |             | 600         |
+--------------------------+-------------+-------------+
| | ~/.ssh/identity        |             | 600         |
| | ~/.ssh/id_dsa          |             |             |
| | ~/.ssh/id_rsa          |             |             |
+--------------------------+-------------+-------------+
| | ~/.ssh/identity.pub    | 644         |             |
| | ~/.ssh/id_dsa.pub      |             |             |
| | ~/.ssh/id_rsa.pub      |             |             |
+--------------------------+-------------+-------------+