Lithium Docs

The `Http` adapter provides basic and digest authentication based on the HTTP protocol.
By default, the adapter uses Http Digest based authentication.
{{{
Auth::config(array('name' => array('adapter' => 'Http', 'users' => array('gwoo' => 'li3'))))
}}}				

To use Basic authentication, set the `method` to basic.
{{{
Auth::config(array('name' => array(
    'adapter' => 'Http', 'users' => array('gwoo' => 'li3'),
    'method' => 'basic'
)))
}}}