The authorized_keys file in SSH specifies the SSH keys that can be used for logging into the user account for which the file is configured. It is a highly important configuration file, as it configures permanent access using SSH keys and needs proper management. The default configuration in most SSH implementations allows users to deploy new ...
Authorized keys specify which users are allowed to log into a server using public key authentication in SSH. In OpenSSH, authorized keys are configured separately for each user, typically in a file called authorized_keys .
The file ~/.ssh/authorized_keys (on the server) is supposed to have a mode of 600. The permissions of the (private) key on the client-side should be 600. If the private key was not protected with a password, and you put it on the server, I recommend you to generate a new one: ssh-keygen -t rsa.
· ssh-keygen -t rsa Step Two—Store the Keys and Passphrase. Once you have entered the Gen Key command, you will get a few more questions: ... You can copy the public key into the new machine’s authorized_keys file with the ssh-copy-id command. Make sure to replace the example username and IP address below. ssh-copy-id demo @ 198.51.100.0;
Listing a public key in .ssh/authorized_keys is necessary, but not sufficient for sshd (server) to accept it. If your private key is passphrase-protected, you'll need to give ssh (client) the passphrase every time. Or you can use ssh-agent, or a GNOME equivalent.
· ~/.ssh/authorized_keys Lists the public keys (DSA, ECDSA, Ed25519, RSA) that can be used for logging in as this user. The format of this file is described in the sshd(8) manual page. This file is not highly sensitive, but the recommended permissions are read/write for …
Now you want to upload your public key to the authorized keys of the server so that you can access it without typing your account password all the time. This quick tutorial shows you two methods to add a public SSH key to the server.
Change the permissions of the ~/.ssh/authorized_keys file using the following command: ~]$ chmod 600 ~/.ssh/authorized_keys See Section 184.108.40.206, “Configuring ssh-agent” for information on how to set up your system to remember the passphrase.
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