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    Method and apparatus for processing information, information storage medium, and computer program
    2.
    发明申请
    Method and apparatus for processing information, information storage medium, and computer program 审中-公开
    用于处理信息的方法和装置，信息存储介质和计算机程序

    公开(公告)号：US20050144470A1

    公开(公告)日：2005-06-30

    申请号：US11019900

    申请日：2004-12-22

    申请人： Yoshikazu Takashima ,  Satoshi Kitani ,  Tomoyuki Asano ,  Kenjiro Ueda ,  Katsumi Muramatsu

    发明人： Yoshikazu Takashima ,  Satoshi Kitani ,  Tomoyuki Asano ,  Kenjiro Ueda ,  Katsumi Muramatsu

    IPC分类号： G06F12/14 ,  G06F1/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  H04L9/08 ,  H04N5/91 ,  H04N5/93

    CPC分类号： G11B20/00086 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00304 ,  G11B20/00362 ,  G11B20/00405 ,  G11B20/00507

    摘要： A content stored in an information recording medium is managed on a per unit basis and protected from unauthorized use. The content stored in the information recording medium is divided into units, and the content is encrypted with a unit key generated for each unit. A unit key generation key is generated based on a variety of key generation information. The unit key for each unit is generated by applying a record seed corresponding to each unit to the unit key generation key. For example, a block key is generated based on the unit key and a block seed per block unit set for every 3 sectors. An encryption process is performed on a per block unit basis using the block key. During decryption, the decrypting of the content is permitted conditional on the matching in the key generation information, the record seed, and the block seed stored in a disk. Unauthorized use of the content is thus prevented.

    摘要翻译： 存储在信息记录介质中的内容以每单位为基础进行管理，并且防止未经授权的使用。 存储在信息记录介质中的内容被分成单位，并且用针对每个单元生成的单元密钥加密内容。 基于各种密钥生成信息生成单元密钥生成密钥。 通过将与每个单元对应的记录种子应用于单位密钥生成密钥来生成每个单元的单位密钥。 例如，基于单位密钥生成块密钥，并且为每3个扇区设置块模块单位块块生成块密钥。 使用块密钥以每块为单位进行加密处理。 在解密过程中，允许内容的解密取决于密钥生成信息，记录种子和存储在盘中的块种子的匹配。 因此防止了未经授权使用内容。

    Signal processing system, recording method, program, recording medium, reproduction device and information processing device
    3.
    发明申请
    Signal processing system, recording method, program, recording medium, reproduction device and information processing device 失效
    信号处理系统，记录方法，程序，记录介质，再现装置和信息处理装置

    公开(公告)号：US20050089165A1

    公开(公告)日：2005-04-28

    申请号：US10505174

    申请日：2003-12-26

    申请人： Satoshi Kitani ,  Katsumi Muramatsu

    发明人： Satoshi Kitani ,  Katsumi Muramatsu

    IPC分类号： G11B20/00 ,  H04L9/10 ,  H04N7/167

    CPC分类号： G11B20/00362 ,  G11B20/00086 ,  G11B20/00528

    摘要： A recorder is composed of a drive 102 and a host 103 that mutually authenticate each other. A C2_G 141 of the drive 102 calculates a medium ID and a medium key and obtains a medium unique key. The medium unique key is encrypted using a session key Ks generated by the mutual authentication and transferred to the host 103. A title key generated by a random number generator 143 of the drive 102 is transferred to the host 103. A content key calculated by a C2_G 145 of the drive 102 using the title key and the CCI 232 is encrypted using the session key Ks and then transferred to the host 103. A content is encrypted using a content key decrypted by the host 103. The drive 102 records the encrypted content, the encrypted title key, and the CCI 232 to the medium 101.

    摘要翻译： 记录器由彼此相互认证的驱动器102和主机103组成。 驱动器102的C2_G 141计算介质ID和介质密钥，并获得介质唯一密钥。 媒体唯一密钥使用通过相互认证生成的会话密钥Ks进行加密，并传送到主机103.由驱动器102的随机数发生器143生成的标题密钥被传送到主机103。 使用标题密钥和CCI 232的驱动器102的C2_G 145使用会话密钥Ks进行加密，然后传送到主机103.使用由主机103解密的内容密钥来加密内容。驱动器102记录加密的内容 ，加密的标题密钥和到媒体101的CCI 232。

    Information processing apparatus, information recording medium, information processing method, and computer program
    4.
    发明授权
    Information processing apparatus, information recording medium, information processing method, and computer program 有权
    信息处理装置，信息记录介质，信息处理方法和计算机程序

    公开(公告)号：US08261096B2

    公开(公告)日：2012-09-04

    申请号：US10567505

    申请日：2004-08-10

    申请人： Yoshikazu Takashima ,  Tomoyuki Asano ,  Satoshi Kitani ,  Katsumi Muramatsu ,  Jun Yonemitsu ,  Kenjiro Ueda

    发明人： Yoshikazu Takashima ,  Tomoyuki Asano ,  Satoshi Kitani ,  Katsumi Muramatsu ,  Jun Yonemitsu ,  Kenjiro Ueda

    IPC分类号： G06F12/14 ,  H04N7/167 ,  H04L29/06

    CPC分类号： G11B20/00086 ,  H04N21/23473 ,  H04N21/25816 ,  H04N21/42646 ,  H04N21/4334 ,  H04N21/43615 ,  H04N21/43853 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/63345 ,  H04N21/8355

    摘要： An information processing apparatus, an information recording medium, an information processing method, and a computer program are provided.In an information recording medium storing many pieces of content, a configuration that allows use management on segmented content basis is provided. A plurality of content management units corresponding to title, index and other information are set by partitioning stored content in an information recording medium. Different unit keys that are encryption keys are allocated to different content management units. At least the content real data included in each content management unit is encrypted by use of the unit key and the encrypted data is stored. In content reproduction, units are identified and decryption is executed by use of a unit key corresponding to each unit for reproduction. In an information recording medium storing many pieces of content for example, each of segmented pieces of content may be managed.

    摘要翻译： 提供信息处理装置，信息记录介质，信息处理方法和计算机程序。 在存储许多内容的信息记录介质中，提供允许基于分段内容的使用管理的配置。 通过将存储的内容分割在信息记录介质中来设置与标题，索引和其他信息相对应的多个内容管理单元。 作为加密密钥的不同单位密钥被分配给不同的内容管理单元。 至少包含在每个内容管理单元中的内容实际数据通过使用单元密钥被加密，并且加密的数据被存储。 在内容再现中，识别单位，并且通过使用与每个单元对应的单元密钥来执行解密以进行再现。 例如，在存储许多内容的信息记录介质中，可以管理每个分段的内容。

    Mutual authentication method, program, recording medium, signal processing system, reproduction device, and information processing device
    5.
    发明授权
    Mutual authentication method, program, recording medium, signal processing system, reproduction device, and information processing device 失效
    相互认证方法，程序，记录介质，信号处理系统，再现设备和信息处理设备

    公开(公告)号：US07395429B2

    公开(公告)日：2008-07-01

    申请号：US10505175

    申请日：2003-12-18

    申请人： Satoshi Kitani ,  Katsumi Muramatsu

    发明人： Satoshi Kitani ,  Katsumi Muramatsu

    IPC分类号： H04L9/00 ,  G06F11/30 ,  H04L9/08 ,  G09C5/00 ,  G06T1/00 ,  G11B20/10 ,  G11B20/12

    CPC分类号： G11B20/00362 ,  G11B20/00086 ,  G11B20/10 ,  H04L9/0822 ,  H04L9/0869 ,  H04L9/3273 ,  H04L2209/605

    摘要： An MKB and a device key 121 of a drive are input to a process MKB 122. The process MKB 122 performs a revoking process for the drive. A process MKB 132 performs a revoking process for a host 103. The host 103 compares MAC values calculated by MAC calculating blocks 123 and 133. When the host 103 has determined that the two values are the same, the host 103 has successfully authenticated the drive 102. The drive 102 compares MAC values calculated by MAC calculating blocks 134 and 124 of the host 103. When the drive 102 has determined that the two values are the same, the drive 102 has successfully authenticated the host 103. When the mutual authentication has been successfully performed, the MAC calculating blocks 125 and 135 generate a common session key.

    摘要翻译： 驱动器的MKB和设备键121被输入到进程MKB 122。 过程MKB 122执行驱动器的撤销过程。 进程MKB 132对主机103执行撤销处理。 主机103比较由MAC计算块123和133计算出的MAC值。 当主机103已经确定两个值相同时，主机103已成功认证驱动器102。 驱动器102比较由主机103的MAC计算块134和124计算出的MAC值。 当驱动器102已经确定两个值相同时，驱动器102已经成功认证了主机103。 当相互验证成功执行时，MAC计算块125和135生成公共会话密钥。

    Signal processing system, recording method, program, recording medium, reproduction device and information processing device
    7.
    发明授权
    Signal processing system, recording method, program, recording medium, reproduction device and information processing device 失效
    信号处理系统，记录方法，程序，记录介质，再现装置和信息处理装置

    公开(公告)号：US07421742B2

    公开(公告)日：2008-09-02

    申请号：US10505174

    申请日：2003-12-26

    申请人： Satoshi Kitani ,  Katsumi Muramatsu

    发明人： Satoshi Kitani ,  Katsumi Muramatsu

    IPC分类号： G06F7/00

    CPC分类号： G11B20/00362 ,  G11B20/00086 ,  G11B20/00528

    摘要： A signal processing system includes a reproducing apparatus for reading information from a recording medium having unique information and an information processing apparatus for mutually authenticating and connecting the reproducing apparatus. The reproducing apparatus includes a final encryption key generating portion that generates a content information encryption key in accordance with intermediate key information. A first transmitting portion transmits the intermediate key information to the information processing apparatus. A second transmitting portion transmits the content information encryption key to the information processing apparatus. The information processing apparatus includes a content information encrypting portion that encrypts content information using the content information encryption key, and an intermediate key information encrypting portion that encrypts the intermediate key information using key information unique to the recording medium. A recording portion records the encrypted content information and the encrypted intermediate key information to the recording medium.

    摘要翻译： 信号处理系统包括用于从具有唯一信息的记录介质读取信息的再现装置和用于相互认证和连接再现装置的信息处理装置。 再现装置包括根据中间密钥信息产生内容信息加密密钥的最终加密密钥产生部分。 第一发送部分将中间密钥信息发送到信息处理装置。 第二发送部分将内容信息加密密钥发送到信息处理装置。 该信息处理装置包括使用内容信息加密密钥对内容信息进行加密的内容信息加密部分和使用该记录介质特有的密钥信息对中间密钥信息进行加密的中间密钥信息加密部分。 记录部分将加密的内容信息和加密的中间密钥信息记录到记录介质。