Creating MYSAPSSO2 credential outside of WebAS?

Is it possible to generate a MYSAPSSO2 credential outside of WebAS?

We're developing a number of .Net connector objects that leverage MYSAPSSO2 for single sign-on. These objects don't live within WebAS. I'd like to find a way to give users the MYSAPSSO2 cookie without making them first log into an EP portal, WebAS service, etc. Can this be done?

--Craig