I had some problems with Digest Authentication. With Basic and Form authentication I didn't have problems except that request.isUserInRole() does not work.
About Digest Authentication the browser display the window asking Username and Password but it is not able to recognize them and after 3 times I have an error!
Have you some suggestions?
Thanks and bye,
Digest authentication does not work as it requires access to a clear text password on the server side, and this is not generally possible.