Passwordless authentication with OpenSSH keys has been the de facto security standard for years. SSH keys are more robust since they’re cryptographically sane by default, and are therefore resilient to most bruteforce atacks. They’re also easier to manage while enabling a form of decentralized authentication (it’s easy and painless to revoke them). So, what’s the next step? And more exactly, why would one need something even better? Why? The main problem with SSH keys is that they’r...