what is the difference between host-based and pub-key auth in ssh?
 

Since host-based and public key authentication in ssh both use the keys, what is the main difference between them? I have had a look at the manual, but I'm still not sure.

In a host-based authentication users do not have their own individual keys - rather the client machine is trusted based on its key and users from that machine are allowed without passwords if their userid matches on both machines (otherwise they are prompted for password).

thanks