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    • 3. 发明授权
    • Method and device for controlling access to encrypted data
    • 用于控制访问加密数据的方法和设备
    • US07908491B2
    • 2011-03-15
    • US11994485
    • 2006-07-06
    • Henri KudelskiJimmy Cochard
    • Henri KudelskiJimmy Cochard
    • H04L9/00H04N5/00H04N5/913H04N7/167
    • H04N21/44236H04N7/1675H04N21/26606H04N21/4181H04N21/4405H04N21/4623
    • The invention concerns a method for controlling access to encrypted data by control words (CW), said control words being received by a security module in control messages (ECM) and returned to a unit operating on (STB) the encrypted data. The method includes the following steps: receiving a first control message (ECM) comprising at least one control word (CW) and a time stamp (TS), receiving a second control message (ECM2) consecutive to the first control message (ECM1), said second message comprising at least one control word (CW) and a time stamp (TS), determining a duration corresponding to the difference between the time stamps (TS) of the two consecutive control messages (ECM1, ECM2), if said duration is less than a predefined duration (CP), incrementing an error counter (CE), and if said duration is not less than said predefined duration, decrementing said error counter (CE), returning the control word (CW) to the operating unit (STB) after a waiting time depending on the value of the error counter (CE).
    • 本发明涉及一种用于通过控制字(CW)控制对加密数据的访问的方法,所述控制字由控制消息(ECM)中的安全模块接收并返回到在(STB)加密数据上操作的单元。 该方法包括以下步骤:接收包括至少一个控制字(CW)和时间戳(TS)的第一控制消息(ECM),接收与第一控制消息(ECM1)连续的第二控制消息(ECM2) 所述第二消息包括至少一个控制字(CW)和时间戳(TS),确定对应于两个连续控制消息(ECM1,ECM2)的时间戳(TS)之间的差的持续时间,如果所述持续时间是 小于预定义的持续时间(CP),递增错误计数器(CE),并且如果所述持续时间不小于所述预定义的持续时间,则递减所述错误计数器(CE),将控制字(CW)返回到操作单元 )等待时间取决于错误计数器(CE)的值。
    • 4. 发明申请
    • Method for deactivating and reactivating security modules
    • 禁用和重新启动安全模块的方法
    • US20060005262A1
    • 2006-01-05
    • US11212904
    • 2005-08-29
    • Henri KudelskiOlivier BriqueChristian WirzPatrick Hauert
    • Henri KudelskiOlivier BriqueChristian WirzPatrick Hauert
    • G06F17/30
    • G07F7/1008G06Q20/341G06Q20/35765H04N7/163H04N21/26606H04N21/4181H04N21/4623
    • This invention concerns a security module deactivation and reactivation method particularly intended for access control of conditional access data. These security modules include a plurality of registers (R1, R2, R3, Rn) containing values. The method includes the step of sending at least one management message (RUN-EMM) containing an executable code, this executable code being loaded into a memory of the security module and then executed. The execution of this code in particular can carry out the combination and/or the enciphering of the values of the registers, or render these values illegible. This method also allows the reactivation of the security modules that have been deactivated previously. In this case, the method includes the step of sending another message containing an executable code (RUN-EMM−1) for the reactivation of the modules, this executable code having an inverted function to that of the executable code used for the deactivation of the security modules.
    • 本发明涉及特别用于条件访问数据的访问控制的安全模块去激活和重新激活方法。 这些安全模块包括包含值的多个寄存器(R 1,R 2,R 3,R n)。 该方法包括发送包含可执行代码的至少一个管理消息(RUN-EMM)的步骤,该可执行代码被加载到安全模块的存储器中然后被执行。 特别地,该代码的执行可以执行寄存器的值的组合和/或加密,或者使这些值难以辨认。 该方法还允许重新启用先前已被停用的安全模块。 在这种情况下,该方法包括发送包含用于重新激活模块的可执行代码(RUN-EMM -1 )的另一消息的步骤,该可执行代码具有与可执行文件相反的功能 用于停用安全模块的代码。
    • 5. 发明授权
    • Method for deactivating and reactivating security modules
    • 禁用和重新启动安全模块的方法
    • US07890770B2
    • 2011-02-15
    • US11212904
    • 2005-08-29
    • Henri KudelskiOlivier BriqueChristian WirzPatrick Hauert
    • Henri KudelskiOlivier BriqueChristian WirzPatrick Hauert
    • G06F21/00H04N7/167
    • G07F7/1008G06Q20/341G06Q20/35765H04N7/163H04N21/26606H04N21/4181H04N21/4623
    • This invention concerns a security module deactivation and reactivation method particularly intended for access control of conditional access data. These security modules include a plurality of registers (R1, R2, R3, Rn) containing values. The method includes the step of sending at least one management message (RUN-EMM) containing an executable code, this executable code being loaded into a memory of the security module and then executed. The execution of this code in particular can carry out the combination and/or the enciphering of the values of the registers, or render these values illegible.This method also allows the reactivation of the security modules that have been deactivated previously. In this case, the method includes the step of sending another message containing an executable code (RUN-EMM−1) for the reactivation of the modules, this executable code having an inverted function to that of the executable code used for the deactivation of the security modules.
    • 本发明涉及特别用于条件访问数据的访问控制的安全模块去激活和重新激活方法。 这些安全模块包括多个包含值的寄存器(R1,R2,R3,Rn)。 该方法包括发送包含可执行代码的至少一个管理消息(RUN-EMM)的步骤,该可执行代码被加载到安全模块的存储器中然后被执行。 特别地,该代码的执行可以执行寄存器的值的组合和/或加密,或者使这些值难以辨认。 该方法还允许重新启用先前已被停用的安全模块。 在这种情况下,该方法包括发送包含用于重新激活模块的可执行代码(RUN-EMM-1)的另一消息的步骤,该可执行代码具有与用于停用该模块的可执行代码相反的功能 安全模块
    • 6. 发明申请
    • CASCADING DYNAMIC CRYPTO PERIODS
    • CASCADING动态CRYPTO时期
    • US20120189121A1
    • 2012-07-26
    • US13014654
    • 2011-01-26
    • Gregory DuvalHenri Kudelski
    • Gregory DuvalHenri Kudelski
    • H04L9/28
    • H04L9/0869H04L9/065H04L9/088H04L9/0891H04L63/0435H04L63/062H04L63/068H04L2209/601H04L2463/062H04N21/2347H04N21/26613H04N21/4405H04N21/4623
    • Systems and methods for performing cascading dynamic crypto periods are disclosed. In embodiments, a control word and a set of functions is transmitted between a head-end and recipient devices at the beginning of a crypto period. The crypto period is divided into a discrete number of sub-crypto periods. The control word used to encrypt and decrypt the broadcast content is changed during each sub-crypto period. At the end of the first sub-crypto period, a derived control word is generated by passing the original control word to a function in the set of functions in order to generate a derived control word at the first transition between sub-crypto periods. The derived control word is used for encryption and decryption of the broadcasted content during the second sub-crypto period. Upon transitioning to the third sub-control-period, the derived control word is input into another function to produce a second derived control word.
    • 公开了用于执行级联动态密码周期的系统和方法。 在实施例中,在密码周期开始时,在头端和接收方设备之间传输控制字和一组功能。 密码周期被分为离散数量的子密码周期。 用于加密和解密广播内容的控制字在每个子加密期间被改变。 在第一子密码周期结束时,通过将原始控制字传递给该组函数中的函数来产生导出的控制字,以便在子密码周期之间的第一次转换时生成导出的控制字。 导出的控制字用于在第二子加密期间的广播内容的加密和解密。 在转换到第三子控制周期时,导出的控制字被输入到另一个函数中以产生第二导出控制字。
    • 7. 发明授权
    • Cascading dynamic crypto periods
    • 级联动态加密期
    • US08687807B2
    • 2014-04-01
    • US13014654
    • 2011-01-26
    • Gregory DuvalHenri Kudelski
    • Gregory DuvalHenri Kudelski
    • H04K1/00
    • H04L9/0869H04L9/065H04L9/088H04L9/0891H04L63/0435H04L63/062H04L63/068H04L2209/601H04L2463/062H04N21/2347H04N21/26613H04N21/4405H04N21/4623
    • Systems and methods for performing cascading dynamic crypto periods are disclosed. In embodiments, a control word and a set of functions is transmitted between a head-end and recipient devices at the beginning of a crypto period. The crypto period is divided into a discrete number of sub-crypto periods. The control word used to encrypt and decrypt the broadcast content is changed during each sub-crypto period. At the end of the first sub-crypto period, a derived control word is generated by passing the original control word to a function in the set of functions in order to generate a derived control word at the first transition between sub-crypto periods. The derived control word is used for encryption and decryption of the broadcasted content during the second sub-crypto period. Upon transitioning to the third sub-control-period, the derived control word is input into another function to produce a second derived control word.
    • 公开了用于执行级联动态密码周期的系统和方法。 在实施例中,在密码周期开始时,在头端和接收方设备之间传输控制字和一组功能。 密码周期被分为离散数量的子密码周期。 用于加密和解密广播内容的控制字在每个子加密期间被改变。 在第一子密码周期结束时,通过将原始控制字传递给该组函数中的函数来产生导出的控制字,以便在子密码周期之间的第一次转换时生成导出的控制字。 导出的控制字用于在第二子加密期间的广播内容的加密和解密。 在转换到第三子控制周期时,导出的控制字被输入到另一个函数中以产生第二导出控制字。
    • 9. 发明申请
    • Method For Processing Conditional Access Contents By A User Unit
    • 用户单元处理条件访问内容的方法
    • US20080250444A1
    • 2008-10-09
    • US12064427
    • 2006-08-08
    • Frederic ThomasSebastien RobyrHenri KudelskiGuy MoreillonPhilippe Desarzens
    • Frederic ThomasSebastien RobyrHenri KudelskiGuy MoreillonPhilippe Desarzens
    • H04N7/16
    • G11B20/0021G11B20/00086H04N5/913H04N7/162H04N21/26606H04N21/4325H04N21/4334H04N21/4623H04N21/4627H04N21/8455H04N2005/91364
    • A method allows a broadcasted conditional access content accessible at the time of transmission to be also accessible at a later time thanks to intermediate storage on a hard disk of a user unit. The processing method includes the steps of receiving at the user unit a data stream encrypted by at least one control word, at least one control message stream containing the control words, forming an index file, each index comprising an identifier of a control message formed by the extraction of data associated to the control messages and an identifier of the part of the content to which the control message is applied; and, at the time of the deferred processing of the content, extracting at least one part of the control messages and resynchronizing the content with the control messages by the use of the index file, the identifier of the control message allowing the selection of the current control message from a set of control messages at the time of the exploitation of the content identified by the identifier of the part of the content related to this control message.
    • 一种方法允许在传输时可访问的广播条件访问内容也可以在稍后的时间被访问,这归功于用户单元的硬盘上的中间存储。 处理方法包括以下步骤:在用户单元处接收由至少一个控制字加密的数据流,至少一个包含控制字的控制消息流,形成索引文件,每个索引包括由 提取与控制消息相关联的数据以及应用控制消息的内容的一部分的标识符; 并且在所述内容的延迟处理时,通过使用所述索引文件来提取所述控制消息的至少一部分并且与所述控制消息重新同步所述内容,所述控制消息的标识符允许选择所述当前 在利用由与该控制消息相关的内容的部分的标识符标识的内容时,来自一组控制消息的控制消息。
    • 10. 发明申请
    • Method to secure a broadcasted event
    • 确保广播事件的方法
    • US20060023876A1
    • 2006-02-02
    • US11074688
    • 2005-03-09
    • Rached KsontiniHenri Kudelski
    • Rached KsontiniHenri Kudelski
    • H04L9/28
    • H04N7/167H04N7/1675H04N21/26606H04N21/4405H04N21/4623
    • The aim of this invention is to propose a solution to prevent the modification of access conditions to an encrypted multimedia content. This aim is achieved by a method to secure an event with control words (CW), the use of this event by user units being subjected to access conditions (AC), said method comprising the following steps: generation of a pseudo-random number (RNG), formation of a control block (CB) by the association of the pseudo-random number (RNG) and the access conditions (AC), calculation of the control word (CW) by the application of a unidirectional function (F) on the control block (CB), use of the control word (CW) to encrypt the event, transmission of the control block (CB) to the user units.
    • 本发明的目的是提出一种解决方案,以防止对加密的多媒体内容的访问条件的修改。 该目的通过一种利用控制字(CW)来保护事件的方法来实现,该用户单元受到访问条件(AC)的使用,所述方法包括以下步骤:产生伪随机数( RNG),通过伪随机数(RNG)和访问条件(AC)的关联来形成控制块(CB),通过应用单向函数(F)对控制字(CW)的计算 控制块(CB),使用控制字(CW)加密事件,将控制块(CB)发送给用户单元。