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    PROTOCOLE D INSCRIPTION, D INVALIDATION ET/OU D EF FACEMENT DE DROITS D ACCES A DES INFORMATIONS EMBROUILLEES E T MODULE DE CONTROLE D ACCES CORRESPONDANT
    21.
    发明公开
    PROTOCOLE D INSCRIPTION, D INVALIDATION ET/OU D EF FACEMENT DE DROITS D ACCES A DES INFORMATIONS EMBROUILLEES E T MODULE DE CONTROLE D ACCES CORRESPONDANT 有权
    协议的加入，移除和/或删除访问权限加密的INFROMATIONEN及相应的访问控制模块

    公开(公告)号：EP1483877A2

    公开(公告)日：2004-12-08

    申请号：EP03727574.0

    申请日：2003-03-06

    申请人： Viaccess

    发明人： BECKER, Claudia ,  CODET, André ,  FEVRIER, Pierre ,  GUIONNET, Chantal

    IPC分类号： H04L29/06

    CPC分类号： H04L63/104 ,  H04L63/0428

    摘要： The invention relates to a protocol for disabling/erasing access rights to scrambled data. According to the invention, the access rights entered in an access control module comprise the following variables: right identification variable (R ID), action date variable (AD V) and right status variable (S V). The status variable can have one of three encoded values, namely enabled, disabled or erased right. The inventive protocol consists in: transmitting (A) at least one access right management message comprising the right identification variable (R IDX), the action date variable (AD VX) and the status assignment variable (S VX), the latter corresponding to a enabled, disabled or erased right; assigning (B) the action date (AD VX) of the message to the action date (AD V) of the right entered; and allocating (C) the status assignment variable (S VX) of the message, corresponding to an enabled, disabled or erased access right, to the status variable (S V) of the entered access right. The invention is suitable for pay television.