专利名称：SYSTEM FOR DIGITAL RIGHTS
MANAGEMENT USING DISTRIBUTEDPROVISIONING AND AUTHENTICATION
发明人：PETERKA, PETR,MEDVINSKY, ALEXANDER申请号：EP03800196申请日：20031229公开号：EP1579624A4公开日：20110810
摘要：A digital rights management system (DRM) (100) for restricting and permittingcontent access in a digital content distribution network such as a network used to delivertelevision programming. The DRM uses distributed authentication and provisioning sothat the potentially many different entities involved in the content distribution networkcan have localized management control. Distributed authentication can use single ormultiple instances of authentication services. A ticket granting service (TGS) (108) is usedto allow clients to request services. In one approach, multiple authentication services usea common key that is known to the TGS (108). In another approach, unique keys areprovided to each authentication service and these keys are communicated to the TGS.
申请人：GENERAL INSTRUMENT CORPORATION
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