RFC 2617 authentication
CherryPy 2.2.1
Filter available at https://svn.defuze.org/oss/httpauthfilter/
CherryPy 3.0, 3.1
Built-in tools digest_auth and basic_auth. See example trunk/cherrypy/test/test_httpauth.py
CherryPy 3.2
Built-in tools auth_digest and auth_basic. See example in BuiltinTools

