There is a simple custom authenticator example in the git security repository. But I think the BaseAuthenicator base class is not tagged yet!
Sorry about that, the authenticator API went through some changes recently and some things got temporarily broken (and unfortunately made it into the release). This has been fixed in the git repository already (and yes, BaseAuthenticator is there also ).
thanks for your reply. I'll just continue to use the Alpha2 version till the next version is out.