AuthenticationProvider that can process CAS service tickets and proxy tickets.
  | StatelessTicketCache | Caches CAS service tickets and CAS proxy tickets for stateless connections. | 
| CasAssertionAuthenticationToken | Temporary authentication object needed to load the user details service. | 
| CasAuthenticationProvider | An AuthenticationProviderimplementation that integrates with JA-SIG Central Authentication Service
 (CAS). | 
| CasAuthenticationToken | Represents a successful CAS Authentication. | 
| EhCacheBasedTicketCache | Caches tickets using a Spring IoC defined EHCACHE. | 
| NullStatelessTicketCache | Implementation of @link StatelessTicketCachethat has no backing cache. |