Using these instructions: Key-Based SSH Logins With PuTTY. I am unable to get it to work with an OpenBSD 4.0 system. It's a fresh install, with nothing else on it. I've used the instructions before on other operating systems and it has worked. I have not been successful in getting it to work with OpenBSD 4.0 though. I figure it's an OpenSSH setting, but I don't know where to look. I thought I'd check here before I started asking the OpenSSH/OpenBSD people.