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    CONTENT PROTECTION
    5.
    发明公开
    CONTENT PROTECTION 审中-公开
    INHALTSSCHUTZ

    公开(公告)号：EP3113501A1

    公开(公告)日：2017-01-04

    申请号：EP15174332.5

    申请日：2015-06-29

    申请人： Nagravision SA

    发明人： SCHWARZ, Christian ,  NICOULIN, André ,  HUNACEK, Didier

    IPC分类号： H04N21/4405 ,  H04N21/4623 ,  H04N21/266 ,  H04N7/167 ,  H04N7/16 ,  H04N21/2347 ,  H04N21/418

    CPC分类号： H04N21/2347 ,  H04N21/26606 ,  H04N21/4181 ,  H04N21/4405 ,  H04N21/4623

    摘要： Devices, servers, systems and methods for content protection are provided. Disclosed embodiments improve temporal granularity of controlling access to the protected content and increase resilience against attacks attempting to prevent re-evaluation of conditions of access. Enforcement of re-evaluation may be based on the receipt and/or verification of tokens. In some embodiments, re-evaluation is enforced by periodically rendering content keys required for content decryption unuseable and/or clearing content keys already in use.

    摘要翻译： 提供了用于内容保护的设备，服务器，系统和方法。 公开的实施例改进了控制对受保护内容的访问的时间粒度，并提高了针对尝试防止重新评估访问条件的攻击的弹性。 重新评估的执行可以基于令牌的收据和/或验证。 在一些实施例中，通过周期性地呈现内容解密所使用的不可使用和/或清除已经在使用的内容密钥来执行重新评估。

    PROCEDE D'IDENTIFICATION DE TERMINAL DANS UN SYSTEME DE FOURNITURE DE CONTENUS MULTIMEDIA
    7.
    发明公开
    PROCEDE D'IDENTIFICATION DE TERMINAL DANS UN SYSTEME DE FOURNITURE DE CONTENUS MULTIMEDIA 审中-公开
    一种用于识别系统中的端子，用于提供多媒体内容

    公开(公告)号：EP3008905A1

    公开(公告)日：2016-04-20

    申请号：EP14728231.3

    申请日：2014-06-06

    申请人： Viaccess

    发明人： HAMON, Vincent

    IPC分类号： H04N21/222 ,  H04N21/258 ,  H04N21/6543 ,  H04N21/8358

    CPC分类号： H04N21/42684 ,  H04N21/222 ,  H04N21/2347 ,  H04N21/25816 ,  H04N21/26606 ,  H04N21/4181 ,  H04N21/4405 ,  H04N21/6543 ,  H04N21/8358

    摘要： The method according to the invention for identifying a terminal in a multimedia content supply system comprises: a) the acquisition (101, 103), then decoding (105, 107, 109), by that terminal, of temporal multimedia content to generate a stream that can be played by a multimedia apparatus, b) the transmission (116, 144, 103) of an identification order to that terminal, from a terminal identification device, c) in response to that order, the activation (129), by the terminal, based on an identifier, of a predetermined modification of the stream, and the transmission (109) of the modified stream as a stream to be played by the multimedia apparatus, d) the acquisition, by the terminal identification device, of the modified stream and the determination (130) of the identifier, from the transmitted order and the presence or absence, in response, of the predetermined modification in the acquired stream, and independently of the content of said predetermined modification.