The private key will be used when logging into servers.

One part of the pair is the private key, as the name suggests this key needs to be kept private and should not be shared.

The command will complete and create a key pair. The passphrase is not required, however, it is advised to set a very strong passphrase which would be difficult for anyone to guess. ssh-keygen -t ed25519 -b 521Īfter entering the command it will prompt for the location to save the key and also to enter a passphrase. In this example a 521 bit ed25519 key is created. By default the command will create a rsa key and place the private and public key in ~/.ssh/. There are multiple options which can be used when creating the key pair. By using keys and disabling password authentication it mitigates brute force attacks on passwords as the private key is required in order to authenticate.įirstly, create a SSH key pair using the ssh-keygen command. SSH public key authentication is the preferred and a more secure way to login to a Linux server.

Ssh keygen ed25519