authentication in HTTPHandlers

[Guest]

Hi,

I have several httphandlers in a web app. I need to set up a very simple
authentication system for users to access these handlers. The requests to
the handlers come from trusted sources, so something as simple as a username
and password, and maybe some elegant way to change these periodically, and
communicate that to the users would suffice.

What is the best way to do this?

Thanks.
-Shefali