Secure Chat with YTalk and SSH
Subject:   Key based auth
Date:   2003-02-21 11:23:53
From:   anonymous2
"We could have set up public key authentication, for example, but remember it is only available on SSH protocol version 2"

This is incorrect.. openssh supports ssh v1 RSA key based authentication just fine. It does require a different key type to v2 (use -t rsa1 instead of -t rsa to ssh-keygen), and there are several good reasons why you should allways use v2 instead of v1 where possible.. but still.