Then, fill out the same key passphrase and press Enter again. Once you have created the passphrase, hit Enter. Passphrase with special characters – Song lyrics or book quotes – Mixing multiple languages – Bonjour!Grazie!Danke!¡Hola!.Combination of words and numbers – TrickyGiraffe37$Sunshine.Random sentence – PurpleElephantsDanceOnFridayNights!.Combining uppercase and lowercase letters, numbers, and special characters is ideal. If someone gains unauthorized access to your private key, they still need to know the passphrase to use it.Ĭhoose a strong, long, and unique passphrase. You can press Enter to skip this step, but it is strongly encouraged to create a private key passphrase to enhance server connection security. Enter passphrase (empty for no passphrase): Next, the key generator window will ask you to create an SSH key passphrase to access your private key. For example, you may want to save your key files in a separate directory from the /.ssh folder for better organization or an encrypted external drive for enhanced security. Press Enter to save them in the default location, which is the /.ssh directory in /home.Īlternatively, specify a different location by typing its path and file name. The key generator should ask you to choose a location to store the keys: Enter file in which to save the key (/home/local_username/.ssh/id_ed25519): The SSH command will display the following message: Generating public/private ed25519 key pair. Then, enter the ssh-keygen command: ssh-keygen -t ed25519 Hostinger supports both RSA and Ed25519 algorithms.įirst, open your Terminal or local SSH client. To ensure seamless key authentication, check your hosting provider’s documentation to verify your SSH key and server’s compatibility. However, you can also follow this guide if you use RSA. This tutorial will generate private and public SSH keys using Ed25519 as an example. The compatibility is lower, but newer operating systems support it. It is just as secure and efficient as an RSA key due to its strong cryptographic properties. Ed25519 – a more modern algorithm with a smaller standard key size of 256 bits.It is also more compatible with older operating systems. RSA – an SSH RSA key is considered highly secure as it has typically larger key sizes, often 2048 or 4096 bits.There are two commonly used algorithms for generating authentication keys: Then, the server checks it against the associated public key to grant you access. When you connect to a remote computer, your local machine provides the private key. Meanwhile, the local computer stores the private keys for authenticating your SSH connection. The remote server uses public keys to verify your identity based on their SSH key fingerprints. These work together to authenticate and encrypt your communication with remote servers. To establish secure connections using SSH, you need to generate a pair of public and private keys. With your local device, remote server, and Terminal prepared, let’s learn how to set up SSH keys step by step. With these prerequisites in place, you are ready to set up your SSH key authentication. ![]() Check out our generating PuTTY SSH Keys tutorial for more information. It’s a viable option for those using older Windows operating systems.
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