A providing computer system may receive a request, via a stateless protocol, to access a resource. An access control application may refer to administrative rules to set validation information associated with the request. Validation information may be in the form of electronic text that is stored in...http://www.google.de/patents/US20030212887?utm_source=gb-gplus-sharePatent US20030212887 - Maintaining authentication states for resources accessed in a stateless environment
