A policy storage stores an access control policy as a set of setting information items to make resources (access destinations) shared by an adhoc group. When a part of the access control policy is edited, a policy analyzer updates a rule generated from the edited access control policy. At this time,...http://www.google.de/patents/US7624424?utm_source=gb-gplus-sharePatent US7624424 - Access control system, access control method, and access control program
