This property contains a list of user's host keys
This property should contain a list
of user's host keys. Host keys are needed by Rhosts, Public Key
and Hostbased authentication types (the client host is
authenticated using these keys). Set this property before calling the Open method.
Note, that SSH client will iterate through the list of keys until the key which the server "knows" will be found. Every "unknown" key will fire a OnAuthenticationFailed event.