Move SSH keys from RSA to Ed25519

25 May 2020

I finally migrated all my SSH keys from using RSA to Ed25519. Just make sure, you have OpenSSH 6.5 or greater installed.

Generate Ed25519 Key: ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "praj@infynyxx.com"
Make sure SSH Agent is running: eval "$(ssh-agent -s)"
Add generated Ed25519 key to SSH Agent: ssh-add ~/.ssh/id_ed25519

Update ~/.ssh/config file:

  Host *
  AddKeysToAgent yes
  UseKeychain yes
  IdentityFile ~/.ssh/id_ed25519

Also checkout this blog post for more information.

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