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1. 发明授权

US07515712B2 Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system 有权
标题翻译：在条件访问系统中封装授权授权的机制和装置
公开(公告)号：US07515712B2
公开(公告)日：2009-04-07
申请号：US10981347
申请日：2005-03-25
申请人： Anthony J. Wasilewski , Jeffery M. Seaman , Darryl L. Defreese
发明人： Anthony J. Wasilewski , Jeffery M. Seaman , Darryl L. Defreese
IPC分类号： H04N7/167 , H04N7/16
CPC分类号： H04N7/163 , H04L63/0428 , H04L63/062 , H04L63/123 , H04N7/1675 , H04N21/23608 , H04N21/26606 , H04N21/4344 , H04N21/4623
摘要： A method for determining whether the terminal is authorized to receive the selected service is practiced in a terminal of a conditional access system in which a user selects a service, the selected service being associated with a frequency, the terminal having a tuner and a secure element with at least one authorized entitlement unit number stored therein. The method includes receiving at least one encrypted entitlement control message corresponding to the service, and decrypting each of the at least one encrypted entitlement control message in the secure element, each decrypted entitlement control message revealing at least one first entitlement number associated with the selected service. The method further includes determining that the terminal is authorized to receive the selected service when any first entitlement number of any decrypted entitlement control message represents any number of the at least one authorized entitlement unit number. Alternatively, the method includes receiving at least one entitlement control message corresponding to the service, and authenticating each of the at least one entitlement control message in the secure element, each authenticated entitlement control message revealing at least one first entitlement number associated with the selected service. The method further including determining that the terminal is authorized to receive the selected service when any first entitlement number of any authenticated entitlement control message represents any number of the at least one authorized entitlement unit number.
摘要翻译：用于确定终端是否被授权接收所选服务的方法在其中用户选择服务的条件访问系统的终端中实施，所选择的服务与频率相关联，所述终端具有调谐器和安全元件其中存储有至少一个授权的权利单元号。所述方法包括：接收与所述服务相对应的至少一个加密授权控制消息，以及解密所述安全元件中的所述至少一个加密授权控制消息中的每一个，每个解密的权利控制消息显示与所选服务相关联的至少一个第一授权号码。该方法还包括当任何解密的授权控制消息的任何第一授权号码表示至少一个授权授权单元号码的任何数量时，确定终端被授权接收所选择的服务。或者，该方法包括：接收与该服务相对应的至少一个授权控制消息，以及认证该安全元件中的该至少一个授权控制消息中的每一个，每个认证授权控制消息显示与所选择的服务相关联的至少一个第一授权号码。所述方法还包括当任何经认证的授权控制消息的任何第一授权号码表示所述至少一个授权授权单元号码的任何数量时，确定所述终端被授权接收所选择的服务。

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