Key-Based SSH Logins With PuTTY

Good to know: Key-Based SSH Logins With PuTTY.

This isn't exactly a great revelation: use PuTTYgen to make a DSA key, hook it into PuTTY, use Pageant if you feel like it, and you're good to go.

The neat thing about this howto is that it furthermore suggests you disable passwords for your SSH server altogether, so that a valid keypair is the only way to access your machine.

Neat, but not something I can use just yet.