Note: GitHub is improving security by dropping older, insecure key types.
DSA keys (ssh-dss) are no longer supported. Existing keys will continue to function through March 15, 2022. You cannot add new DSA keys to your user account on GitHub.
RSA keys (ssh-rsa) with a valid_after before November 2, 2021 may continue to use any signature algorithm. RSA keys generated after that date must use a SHA-2 signature algorithm. Some older clients may need to be upgraded in order to use SHA-2 signatures.
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Open TerminalTerminalGit Bash.
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Enter
ls -al ~/.sshto see if existing SSH keys are present:$ ls -al ~/.ssh # Lists the files in your .ssh directory, if they exist -
Check the directory listing to see if you already have a public SSH key. By default, the filenames of the public keys are one of the following:
- id_rsa.pub
- id_ecdsa.pub
- id_ed25519.pub
If you don't have an existing public and private key pair, or don't wish to use any that are available to connect to GitHub, then generate a new SSH key.
If you see an existing public and private key pair listed (for example id_rsa.pub and id_rsa) that you would like to use to connect to GitHub, you can add your SSH key to the ssh-agent.
Tip: If you receive an error that ~/.ssh doesn't exist, don't worry! We'll create it when we generate a new SSH key.