Using SSH Keys with GitHub
Why Use SSH Keys?
- Security: SSH keys provide a more secure way to authenticate with GitHub compared to using passwords.
- Convenience: Once set up, you don't need to enter your password for every Git operation.
Generating an SSH Key
1. Open your terminal. 2. Generate a new SSH key pair:
ssh-keygen -t ed25519 -C "[email protected]"
Replace `[email protected]` with your actual email address. You'll be prompted to enter a file location (default is `~/.ssh/id_ed25519`) and a passphrase. It's recommended to use a passphrase for added security.
3. Locate the public key:
The public key is located in `~/.ssh/id_ed25519.pub`.
Adding the Public Key to GitHub
- Log in to GitHub.
- Go to your account settings.
- Navigate to the “SSH and GPG keys” section.
- Click “New SSH key.”
- Give the key a title (e.g., “Your computer”) and paste the contents of your public key into the key text area.
- Click “Add SSH key.”
Testing the SSH Connection
- Open your terminal.
- Run the following command:
ssh -T [email protected]
If successful, you should see a welcome message from GitHub.
Using SSH with Git
To clone a repository using SSH:
git clone [email protected]:username/repository_name.git
Replace `username` and `repository_name` with your actual GitHub username and repository name.
Additional Tips
- SSH agent: Use `ssh-agent` to manage your SSH keys and avoid entering the passphrase repeatedly.
- Multiple SSH keys: If you have multiple computers or want to use different keys for different purposes, you can generate multiple key pairs and add them to GitHub.
- SSH config: You can configure SSH settings in the `~/.ssh/config` file to simplify the connection process.
- Key revocation: If your SSH key is compromised, you can revoke it on GitHub.
By following these steps, you'll have a secure and efficient way to interact with GitHub.