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1.发明授权
公开(公告)号：US6091818A
公开(公告)日：2000-07-18
申请号：US901842
申请日：1997-07-28
CPC分类号： H04N7/163 , H04N21/26606 , H04N21/4181 , H04N21/4623 , H04N7/1675
摘要： The invention relates to a conditional access system making it possible for a service provider to supply his services solely to users having acquired entitlements to these services.The services supplied by a service provider consist of an item scrambled by control words. To keep these control words secret, they are supplied in messages (MEC) after having been encrypted with an encryption algorithm with key K.According to the invention, one and the same message (MEC) contains the same control word (Cwi) encrypted several times, each encryption (E(Cwi)Kj) of the control word depending on a different encryption key (Kj).The invention applies to any type of conditional access system, be this system either of "off-line" or "on-line" type.
摘要翻译： 本发明涉及一种条件访问系统，使得服务提供商仅将其服务提供给已获得这些服务的权利的用户成为可能。 由服务提供商提供的服务由控制字加扰的项目组成。 为了保持这些控制字的秘密，在用密钥K加密算法加密之后，它们被提供在消息（MEC）中。根据本发明，一个相同的消息（MEC）包含相同的控制字（Cwi）加密的几个 次，根据不同的加密密钥（Kj）的控制字的每个加密（E（Cwi）Kj）。 本发明适用于任何类型的条件访问系统，该系统是“离线”或“在线”类型。
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公开(公告)号：US6035038A
公开(公告)日：2000-03-07
申请号：US884343
申请日：1997-06-27
CPC分类号： G07F7/1008 , G06Q20/341 , G06Q20/4097 , H04L9/0822 , H04N21/26606 , H04N21/4181 , H04N21/4623 , H04N7/163 , H04N7/1675 , H04L2209/601
摘要： The conditional access system of the present invention allows a service provider to supply services, which may be scrambled by a control word, only to those users who have acquired entitlements to these services. The control word is supplied in Entitlement Control Messages (ECM) after having been encrypted using a key. The entitlements of each user are forwarded in Entitlement Management Messages which contain the key. The conditional access system verifies and validates the ECM and EMM prior to processing the control word.
摘要翻译： 本发明的条件访问系统允许服务提供商仅向获得这些服务的权利的用户提供可以由控制字加扰的服务。 使用密钥加密后，控制字在授权控制消息（ECM）中提供。 每个用户的权利在包含密钥的授权管理消息中转发。 条件访问系统在处理控制字之前验证并验证ECM和EMM。
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3.发明授权Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process 失效用于保护从安全元件发送到解码器的信息项目和使用这种处理的保护系统的过程公开(公告)号：US06266415B1
公开(公告)日：2001-07-24
申请号：US08968140
申请日：1997-11-12
IPC分类号： H04L900
CPC分类号： H04N7/163 , H04H60/13 , H04N7/1675 , H04N21/4181 , H04N21/4367 , H04N21/4405
摘要： The invention relates to a process for protecting an information item transmitted from a security element to a decoder and a protection system using such a process. The information item is protected by encrypting within the security element the information item to be transmitted to the decoder and by decrypting this information item within the decoder. The invention applies to conditional-access systems.
摘要翻译： 本发明涉及一种用于保护从安全元件发送到解码器的信息项目和使用这种处理的保护系统的过程。信息项目通过在安全元件内加密要发送到解码器的信息项目以及通过 在解码器内解密该信息项。本发明适用于条件访问系统。
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4.发明授权Process for controlling access to a domestic network and device implementing the process 有权用于控制对国内网络的访问和实现该过程的设备的过程公开(公告)号：US06532539B1
公开(公告)日：2003-03-11
申请号：US09170827
申请日：1998-10-13
IPC分类号： H04L900
CPC分类号： H04L12/40104 , H04N7/163 , H04N7/1675 , H04N21/26606 , H04N21/4181 , H04N21/43632 , H04N21/4367 , H04N21/4405 , H04N21/4623
摘要： The present invention relates to a process making it possible to control access to at least one terminal with address AD by at least one scrambled item with the aid of at least one control word. The process comprises a step making it possible to construct a descrambling item in the form of a message containing the control word, a datum making it possible to identify the scrambled item and the address of the terminal.
摘要翻译： 本发明涉及一种使得可以借助于至少一个控制字通过至少一个加扰项来控制对具有地址AD的至少一个终端的访问的处理。 该过程包括使得可以以包含控制字的消息的形式构建解扰项目的步骤，使得可以识别加扰项目和终端的地址的数据。
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5.发明授权Process for data certification by scrambling and certification system using such a process 失效使用这种过程的加密和认证系统进行数据认证的过程
公开(公告)号：US06035397A
公开(公告)日：2000-03-07
申请号：US971016
申请日：1997-11-14
CPC分类号： H04L9/321 , H04N21/2347 , H04N21/26606 , H04N21/4405 , H04N7/1675
摘要： The invention relates to a process for data certification as well as to the system implementing the certification process.The certification of the data is performed by scrambling.An authority independent of the entity which controls the data source and of the user(s) for which these data are intended, scrambles the data with the aid of control words and encrypts the control words with the aid of an encryption algorithm with key K.So that a user or the users can descramble the data scrambled by the independent authority, a certification verification device containing the encryption key K is supplied to the user or users under the control of the independent authority.The certification process and the system associated therewith apply more particularly to conditional-access systems.
摘要翻译： 本发明涉及用于数据认证的过程以及实施认证过程的系统。 数据的认证是通过加扰进行的。 独立于控制数据源和这些数据的用户的实体的权限，借助于控制字来加扰数据，并借助于具有密钥K的加密算法加密控制字。 为了使用户或用户可以解密由独立机构加扰的数据，将包含加密密钥K的认证验证装置提供给在独立授权机构的控制下的用户或用户。 认证过程和与之相关联的系统更具体地涉及条件访问系统。
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