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公开(公告)号:US20130031576A1
公开(公告)日:2013-01-31
申请号:US13512083
申请日:2009-11-25
申请人: Olivier Koemmerling
发明人: Olivier Koemmerling
IPC分类号: H04N21/2347
CPC分类号: H04N7/1675 , H04N21/26606 , H04N21/4181 , H04N21/6332 , H04N21/63775
摘要: A method for identifying of at least an identifier of a conditional access card used in a control word redistribution system by passing information over a side channel, said method comprising a modification step of the response time, of the card, to a control word request, according to a predefined function which depends on the identifier of the said cards.
摘要翻译: 一种用于通过在侧信道上传递信息来识别在控制字再分发系统中使用的条件访问卡的至少一个标识符的方法,所述方法包括卡的响应时间到控制字请求的修改步骤, 根据取决于所述卡的标识符的预定义功能。
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公开(公告)号:US08949881B2
公开(公告)日:2015-02-03
申请号:US13512083
申请日:2009-11-25
申请人: Olivier Koemmerling
发明人: Olivier Koemmerling
IPC分类号: H04N7/167
CPC分类号: H04N7/1675 , H04N21/26606 , H04N21/4181 , H04N21/6332 , H04N21/63775
摘要: A method for identifying of at least an identifier of a conditional access card used in a control word redistribution system by passing information over a side channel, said method comprising a modification step of the response time, of the card, to a control word request, according to a predefined function which depends on the identifier of the said cards.
摘要翻译: 一种用于通过在侧信道上传递信息来识别在控制字再分发系统中使用的条件访问卡的至少一个标识符的方法,所述方法包括卡的响应时间到控制字请求的修改步骤, 根据取决于所述卡的标识符的预定义功能。
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