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    • 6. 发明授权
    • Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage device
    • 在硬配对的接收机和存储设备中超级加密存储和检索媒体节目
    • US07480381B2
    • 2009-01-20
    • US11701800
    • 2007-02-02
    • Raynold M. KahnGregory J. GagnonDavid D. HaPeter M. KlaussChristopher P. CurrenThomas H. James
    • Raynold M. KahnGregory J. GagnonDavid D. HaPeter M. KlaussChristopher P. CurrenThomas H. James
    • H04L9/00
    • H04N21/4147H04N5/76H04N5/783H04N7/163H04N7/1675H04N7/17327H04N9/8042H04N9/8205H04N21/4331H04N21/4334H04N21/4367H04N21/47202
    • A method and apparatus for storing and retrieving program material for subsequent replay is disclosed. The apparatus comprises a tuner, for receiving a data stream comprising encrypted access control information and the program material encrypted according to a first encryption key, the access control information including the first encryption key; a first encryption module, communicatively coupled to the tuner and communicatively coupleable to a media storage device, for further encrypting the encrypted program material according to a second encryption key and for encrypting the second encryption key according to a third encryption key to produce a fourth encryption key; a first decryption module communicatively coupleable to the media storage device, for decrypting the fourth encryption key retrieved from the media storage device using the third encryption key to produce the second encryption key, and for decrypting the further encrypted program material retrieved from the media program device to produce the encrypted program material; a conditional access module communicatively coupled to the first decryption module, for decrypting the encrypted access control information to produce the first encryption key; and a second decryption module, for decrypting the program material using the first encryption key.
    • 公开了用于存储和检索用于后续重放的程序材料的方法和装置。 该装置包括调谐器,用于接收包括加密的访问控制信息的数据流和根据第一加密密钥加密的程序素材,所述访问控制信息包括第一加密密钥; 第一加密模块,通信地耦合到调谐器并且可通信地耦合到媒体存储设备,用于根据第二加密密钥进一步加密加密的节目素材,并且根据第三加密密钥加密第二加密密钥以产生第四加密 键; 可通信地耦合到所述媒体存储设备的第一解密模块,用于使用所述第三加密密钥解密从所述媒体存储设备检索的所述第四加密密钥以产生所述第二加密密钥,以及用于解密从所述媒体节目设备检索的所述另外加密的节目素材 生成加密程序素材; 通信地耦合到第一解密模块的条件访问模块,用于解密加密的访问控制信息以产生第一加密密钥; 以及第二解密模块,用于使用所述第一加密密钥对所述程序素材进行解密。
    • 7. 发明申请
    • SUPER ENCRYPTED STORAGE AND RETRIEVAL OF MEDIA PROGRAMS WITH SMARTCARD GENERATED KEYS
    • 智能卡生成卡的超级存储和媒体程序检索
    • US20080313474A1
    • 2008-12-18
    • US12184957
    • 2008-08-01
    • Raynold M. KahnGregory J. GagnonDavid D. HaPeter M. KlaussChristopher P. CurrenThomas H. James
    • Raynold M. KahnGregory J. GagnonDavid D. HaPeter M. KlaussChristopher P. CurrenThomas H. James
    • H04L9/14H04L9/00
    • H04N21/4181G06Q20/201H04N5/783H04N5/913H04N7/167H04N21/4325H04N21/4334H04N21/440281H04N21/4405H04N21/4408H04N21/4623H04N21/4627H04N21/47211H04N21/63345H04N2005/91364
    • A method and apparatus for storing and retrieving program material for subsequent replay is disclosed. In summary, the present invention describes a system and method for storing and retrieving program material for subsequent replay. The method comprises the steps of accepting encrypted access control information and the program material encrypted according to a first encryption key, the access control information including a first encryption key and control data; decrypting the received access control information to produce the first encryption key; decrypting the program material using the first encryption key; re-encrypting the program material using according to a second encryption key; encrypting the second encryption key according to a third encryption key to produce a fourth encryption key; and providing the re-encrypted program material and a fourth encryption key for storage. The apparatus comprises a conditional access module, for accepting encrypted access control information and the program material encrypted according to a first encryption key, the encrypted access control information including the first encryption key and temporally-variant control data, the control access module comprising a first decryption module, for decrypting the access control information to produce the first encryption key; a first encryption module, for encrypting a second encryption key with a third encryption key to produce a fourth encryption key; and a second decryption module for decrypting the fourth encryption key to produce the second encryption key.
    • 公开了用于存储和检索用于后续重放的程序材料的方法和装置。 总之,本发明描述了一种用于存储和检索用于后续重放的节目素材的系统和方法。 该方法包括以下步骤:接收加密的访问控制信息和根据第一加密密钥加密的程序素材,所述访问控制信息包括第一加密密钥和控制数据; 解密所接收的访问控制信息以产生第一加密密钥; 使用所述第一加密密钥解密所述节目素材; 根据第二加密密钥重新加密所述节目素材; 根据第三加密密钥加密第二加密密钥以产生第四加密密钥; 并提供重新加密的节目素材和用于存储的第四加密密钥。 该装置包括条件访问模块,用于接收加密的访问控制信息和根据第一加密密钥加密的程序素材,加密的访问控制信息包括第一加密密钥和时间变量控制数据,控制访问模块包括第一 解密模块,用于解密所述访问控制信息以产生所述第一加密密钥; 第一加密模块,用于利用第三加密密钥加密第二加密密钥以产生第四加密密钥; 以及用于解密第四加密密钥以产生第二加密密钥的第二解密模块。
    • 8. 发明授权
    • Methods and apparatus for distributing digital content
    • 分发数字内容的方法和设备
    • US07369660B1
    • 2008-05-06
    • US10441505
    • 2003-05-20
    • Raynold M. KahnGregory J. Gagnon
    • Raynold M. KahnGregory J. Gagnon
    • H04N7/167
    • H04N7/1675H04N7/162H04N7/17354H04N21/258H04N21/26283H04N21/4135H04N21/4334H04N21/4367H04N21/4405H04N21/4408H04N21/47202H04N21/63345H04N21/6581
    • Methods and an apparatus for distributing digital content via a host receiver (e.g., direct-to-home satellite host receiver) are disclosed. The disclosed techniques include transmission of a host identifier and a client identifier from a host receiver and a client device to a satellite transmission station. The identifiers are used by the transmission station to lookup unique encryption keys associated with the host receiver and client device. The transmission station then transmits one or more encrypted keys to the host and/or client. In addition, the transmission station transmits encrypted content to the host. In turn, the host decrypts the content using one encryption key, re-encrypts the content using another encryption key, and passes the content along to the client device. By using the smart card, tuner, and/or storage device of the host receiver, the client device need not include a smart card, tuner, and/or storage device.
    • 公开了用于经由主机接收机(例如,直接到家庭卫星主机接收机)分发数字内容的方法和装置。 所公开的技术包括将主机标识符和客户机标识符从主机接收机和客户端设备传输到卫星传输站。 标识符被发送站使用以查找与主机接收器和客户端设备相关联的唯一加密密钥。 然后,发送站将一个或多个加密的密钥发送到主机和/或客户端。 此外,发送站向主机发送加密的内容。 反过来,主机使用一个加密密钥解密内容,使用另一个加密密钥重新加密内容,并将内容传递到客户端设备。 通过使用主机接收机的智能卡,调谐器和/或存储设备,客户端设备不需要包括智能卡,调谐器和/或存储设备。