how to write my own authentication

[Gao, Jian-Min (David, ES-BEST-Shore-Services-China-SH)]

Hi list,

I would like to write a custom authentication module, but I don't know where to 
start with. Do I need to extend class AbstractLoginModule? I didn't find any 
information quite useful on jspwiki.org.

Best Regards,
David Gao