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专利名称：System for digital rights management using
distributed provisioning and authentication
发明人：Petr Peterka,Alexander Medvinsky申请号：US10334606申请日：20021230
公开号：US20040128499A1公开日：20040701
专利附图：
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 so
that 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 anauthentication service associated with a specific provisioning service, or from multipleauthentication services in the network.
申请人：GENERAL INSTRUMENT CORPORATION
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