生产KEY

1.使用ssh-keygen生成私钥和公钥

命令如下：

ssh-keygen -t rsa

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例子：

ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/home/wangxiaosheng/.ssh/id_rsa):

Created directory '/home/wangxiaosheng/.ssh'.

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /home/wangxiaosheng/.ssh/id_rsa.

Your public key has been saved in /home/wangxiaosheng/.ssh/id_rsa.pub.

The key fingerprint is:

SHA256:CNcHTPggmTpVVu71TBJJYJpVo0M0027qa2qB33Bn1WY wangxiaosheng@yutao-PowerEdge-R430

The key's randomart image is:

+---[RSA 2048]----+

|    +o*%==.    |

|    =.oO.=oo    |

|  o..+o=.+ ..  |

|  o  o o.+o=. E  |

|  . .. So .oo  |

|    . o o o      |

|    . * o      |

|      o +        |

|    ..o..      |

+----[SHA256]-----+

参数 -t rsa 表示使用rsa算法进行加密，执行后，会在/home/当前用户/.ssh目录下找到id_rsa(私钥)和id_rsa.pub(公钥)

fdipzone@ubuntu:~$ ls -lt ~/.ssh

总用量 12

-rw------- 1 fdipzone fdipzone 1679 2015-08-07 00:28 id_rsa

-rw-r--r-- 1 fdipzone fdipzone  397 2015-08-07 00:28 id_rsa.pub

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也可以使用 dsa 加密算法进行加密,命令如下:

ssh-keygen -t dsa