How to secure RESTful interface in JBoss AS 7

Question

After successfully migrating my RESTful application to JBoss AS7, I would like to re-enable authentication (I used BASIC auth over SSL). It seems that this is now possible without writing XML configuration, just by using annotations.

Unfortunately, I cannot find which maven dependency I need to use to import the @WebService and @SecurityContext annotations.

Or is this completely going the wrong way? Is there a working example somewhere?

Thanks for your help!