通过 1 个命令行创建 none 密码 SSH 密钥

Question

我想通过脚本创建 SSH 密钥

因为无论如何我都要设置空密码，所以我想知道是否可以通过 1 个命令行设置空密码 SSH 密钥。

ssh-keygen -t rsa -b 4096 -C "temp@example.com"


ssh-keygen -t rsa -b 4096 -C "temp@example.com"
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): tmp_rsa        
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in tmp_rsa.
Your public key has been saved in tmp_rsa.pub.
The key fingerprint is:
SHA256:R1SEZr34y/4oBRTK3AieT4b8fw1PDG1kUekTfFuHoDA temp@example.com
The key's randomart image is:
+---[RSA 4096]----+
|      . E o*+.=+o|
|     o * B=..+.++|
|      = B++...+ *|
|       = .o .+ + |
|        S .o. o .|
|         o  o=   |
|          .o..o  |
|          ..o.   |
|           oo..  |
+----[SHA256]-----+

我正在尝试使用 1 个命令行创建没有密码的 tmp_rsa 文件。

关于如何做到这一点的任何指导都将是一个巨大的帮助！

Answer 1

ssh-keygen有options在命令行指定密码和输出文件：

-f filename
Specifies the filename of the key file.
-N new_passphrase
Provides the new passphrase.

所以：

$ ssh-keygen -t rsa -b 4096 -C "temp@example.com" -N '' -f tmp_rsa
Generating public/private rsa key pair.
Your identification has been saved in tmp_rsa.
Your public key has been saved in tmp_rsa.pub.
The key fingerprint is:
SHA256:1S94g+i4SBQeqUwQ7uuEx2ZOfp+z8dR+jFBC4qVRj5Y temp@example.com
The key's randomart image is:
+---[RSA 4096]----+
|o.     ..        |
|..   .o o+ .     |
| .. +. *E o .    |
|.o o oo..o.o .   |
| .o o   Soo + .  |
|....   o.. . o   |
|.o* . o o..o     |
|oB ....* .. o    |
| .o...=o. ..     |
+----[SHA256]-----+
$ ls
tmp_rsa     tmp_rsa.pub

通过 1 个命令行创建 none 密码 SSH 密钥

Create an none password SSH key by 1 command line

ssh

bash

shell

ssh-keys