To configure your account on GitHub.com to use your new (or existing) SSH key, you'll also need to add the key to your account.| GitHub Docs
You can secure your SSH keys and configure an authentication agent so that you won't have to reenter your passphrase every time you use your SSH keys.| GitHub Docs
Using the SSH protocol, you can connect and authenticate to remote servers and services. With SSH keys, you can connect to GitHub without supplying your username and personal access token at each visit. You can also use an SSH key to sign commits.| GitHub Docs