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专利名称：SYSTEM FOR DIGITAL RIGHTS
MANAGEMENT USING DISTRIBUTEDPROVISIONING AND AUTHENTICATION
发明人：PETERKA, Petr,MEDVINSKY, Alexander申请号：EP03800196.2申请日：20031229公开号：EP1579624A2公开日：20050928
摘要：A digital rights management system (DRM) 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 and control. Distributed authentication can use single ormultiple instances of authentication services. A ticket granting service (TGS) is used toallow clients to request services. In one approach, multiple authentication services use acommon key that is known to the TGS. In another approach, unique keys are provided toeach authentication service and these keys are communicated to the TGS. Distributedprovisioning allows different entities to grant access rights or other resources.Provisioning service (PS) processes can execute at multiple different physical locations.Synchronization among the different PSs is provided by a managing entity or in a peer-to-peer transfer to help ensure the uniqueness of user IDs. New clients can make aninitialization request from a key management system via an appropriate protocol. Therequests can be made from a single, dedicated authentication service, from an
authentication service associated with a specific provisioning service, or from multipleauthentication services in the network.
申请人：GENERAL INSTRUMENT CORPORATION
地址：101 Tournament Drive Horsham, Pennsylvania 19044 US
国籍：US
代理机构：McLeish, Nicholas Alistair Maxwell
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