48.3. Generating SSH keys

Procedure

1. To generate an RSA SSH key, run the following command:

   $ ssh-keygen -t rsa -C user@example.com
   Generating public/private rsa key pair.

   Note if generating a host key, replace user@example.com with the required hostname, such as server.example.com,1.2.3.4.

2. Specify the file where you are saving the key or press enter to accept the displayed default location.

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

   Note if generating a host key, save the key to a different location than the user’s ~/.ssh/ directory so you do not overwrite any existing keys. for example, /home/user/.ssh/host_keys.

3. Specify a passphrase for your private key or press enter to leave the passphrase blank.

   Enter passphrase (empty for no passphrase):
   Enter same passphrase again:
   Your identification has been saved in /home/user/.ssh/id_rsa.
   Your public key has been saved in /home/user/.ssh/id_rsa.pub.
   The key fingerprint is:
   SHA256:ONxjcMX7hJ5zly8F8ID9fpbqcuxQK+ylVLKDMsJPxGA user4@example.com
   The key's randomart image is:
   +---[RSA 3072]----+
   |         ..o     |
   |         .o +    |
   |     E. .  o =   |
   |    ..o=  o . +  |
   |      +oS. = + o.|
   |    . .o .* B =.+|
   |     o + . X.+.= |
   |      + o o.*+. .|
   |       .   o=o . |
   +----[SHA256]-----+

   To upload this SSH key, use the public key string stored in the displayed file.