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    COMMUNICATION APPARATUS, SERVER, AND COMPUTER PROGRAM PRODUCT THEREFOR
    1.
    发明申请
    COMMUNICATION APPARATUS, SERVER, AND COMPUTER PROGRAM PRODUCT THEREFOR 审中-公开
    通信设备，服务器和计算机程序产品

    公开(公告)号：US20090282250A1

    公开(公告)日：2009-11-12

    申请号：US12329375

    申请日：2008-12-05

    申请人： Hideaki SATO ,  Tatsuyuki Matsushita ,  Kentaro Umesawa ,  Hideki Matsumoto ,  Ryuiti Koike ,  Taku Kato ,  Haruhiko Toyama ,  Satoshi Ito ,  Toru Kambayashi

    发明人： Hideaki SATO ,  Tatsuyuki Matsushita ,  Kentaro Umesawa ,  Hideki Matsumoto ,  Ryuiti Koike ,  Taku Kato ,  Haruhiko Toyama ,  Satoshi Ito ,  Toru Kambayashi

    IPC分类号： H04L9/00

    CPC分类号： H04L9/083 ,  H04L9/0891 ,  H04L9/14 ,  H04L2209/60

    摘要： A communication apparatus receives, from another communication apparatus, a plurality of encrypted pieces obtained by encrypting a plurality of pieces constituting a part of a content and obtains a part or all of decryption keys used for decrypting the encrypted pieces. The communication apparatus also obtains an invalid piece list showing one or more identifiers of one or more encrypted pieces that can respectively be decrypted by using one or more decryption keys that have already been invalidated. In the case where at least one of the encrypted pieces is listed in the invalid piece list, the communication apparatus deletes the at least one of the encrypted pieces, based on an obtainment status of the encrypted pieces or an obtainment status of the decryption keys.

    摘要翻译： 通信装置从另一通信装置接收通过加密构成内容的一部分的多个片段获得的多个加密片段，并获得用于解密加密片段的解密密钥的一部分或全部。 通信装置还通过使用已经被无效的一个或多个解密密钥获得表示可分别解密的一个或多个加密片段的一个或多个标识符的无效片段列表。 在无效片列表中列出至少一个加密片的情况下，通信装置根据加密片的获取状态或解密密钥的获得状态来删除加密片中的至少一个。

    COMMUNICATION APPARATUS, KEY SERVER, AND MANAGEMENT SERVER
    4.
    发明申请
    COMMUNICATION APPARATUS, KEY SERVER, AND MANAGEMENT SERVER 审中-公开
    通信设备，主要服务器和管理服务器

    公开(公告)号：US20100008509A1

    公开(公告)日：2010-01-14

    申请号：US12368674

    申请日：2009-02-10

    申请人： Tatsuyuki Matsushita ,  Ryuiti Koike ,  Hideki Matsumoto ,  Kentaro Umesawa ,  Taku Kato ,  Haruhiko Toyama ,  Hideaki Sato ,  Toru Kambayashi ,  Satoshi Ito

    发明人： Tatsuyuki Matsushita ,  Ryuiti Koike ,  Hideki Matsumoto ,  Kentaro Umesawa ,  Taku Kato ,  Haruhiko Toyama ,  Hideaki Sato ,  Toru Kambayashi ,  Satoshi Ito

    IPC分类号： H04L9/14

    CPC分类号： H04L9/083 ,  H04L63/061 ,  H04L2209/60 ,  H04L2463/062

    摘要： A communication apparatus obtains file information indicating all or a part of first and second encrypted pieces obtained by encrypting a plurality of pieces constituting a part of a content and version management information with which it is possible to judge whether the file information has validity and receives, for each of the pieces, one of the first encrypted piece and the second encrypted piece from another communication apparatus, by using the file information. The communication apparatus transmits, to a key server, a request message for requesting decryption keys each being used for decrypting the one of the first encrypted piece and the second encrypted piece received for a different one of the pieces and the version management information of the file information used to obtain the one of the first encrypted piece and the second encrypted piece in correspondence with each of the pieces and receives the decryption keys.

    摘要翻译： 通信装置获取指示通过加密构成内容的一部分的多个片段获得的第一和第二加密片段的全部或一部分的文件信息，以及可以判断文件信息是否具有有效性并接收的版本管理信息， 对于每个片段，通过使用文件信息，来自另一通信装置的第一加密片和第二加密片之一。 通信装置向密钥服务器发送用于请求解密密钥的请求消息，每个解密密钥用于解密针对不同的片段接收的第一加密片段和第二加密片段中的一个以及文件的版本管理信息 用于获得与每个片段对应的第一加密片和第二加密片中的一个的信息，并接收解密密钥。

    Information processing device and computer program product
    6.
    发明授权
    Information processing device and computer program product 有权
    信息处理设备和计算机程序产品

    公开(公告)号：US08885870B2

    公开(公告)日：2014-11-11

    申请号：US13207572

    申请日：2011-08-11

    申请人： Tatsuyuki Matsushita ,  Nakaba Kogure ,  Fangming Zhao ,  Kentaro Umesawa ,  Toru Kambayashi

    发明人： Tatsuyuki Matsushita ,  Nakaba Kogure ,  Fangming Zhao ,  Kentaro Umesawa ,  Toru Kambayashi

    IPC分类号： G06K9/00 ,  G06T1/00 ,  G10L19/018

    CPC分类号： G06T1/0028 ,  G06T1/0085 ,  G10L19/018

    摘要： According to an embodiment, an information processing device includes: an extracting unit configured to extract a feature quantity of a content; a first detecting unit configured to detect a point in the content where variation of the feature quantity is a first predetermined amount or more; a second detecting unit configured to detect components of watermark information including components corresponding to respective intervals based on the point; a determining unit configured to determine a reliability of the watermark information that is detected; and a selecting unit configured to select a first watermark information from the watermark information based on a result of determination determined by the determining unit.

    摘要翻译： 根据实施例，信息处理设备包括：提取单元，被配置为提取内容的特征量; 第一检测单元，被配置为检测特征量的变化是第一预定量以上的内容中的点; 第二检测单元，被配置为基于该点检测包括与各间隔相对应的分量的水印信息的分量; 确定单元，被配置为确定检测到的水印信息的可靠性; 以及选择单元，被配置为基于由所述确定单元确定的确定结果从所述水印信息中选择第一水印信息。

    INFORMATION PROCESSING DEVICE AND COMPUTER PROGRAM PRODUCT
    7.
    发明申请
    INFORMATION PROCESSING DEVICE AND COMPUTER PROGRAM PRODUCT 有权
    信息处理设备和计算机程序产品

    公开(公告)号：US20120063635A1

    公开(公告)日：2012-03-15

    申请号：US13207572

    申请日：2011-08-11

    申请人： Tatsuyuki Matsushita ,  Nakaba Kogure ,  Fangming Zhao ,  Kentaro Umesawa ,  Toru Kambayashi

    发明人： Tatsuyuki Matsushita ,  Nakaba Kogure ,  Fangming Zhao ,  Kentaro Umesawa ,  Toru Kambayashi

    IPC分类号： G06K9/00

    CPC分类号： G06T1/0028 ,  G06T1/0085 ,  G10L19/018

    摘要： According to an embodiment, an information processing device includes: an extracting unit configured to extract a feature quantity of a content; a first detecting unit configured to detect a point in the content where variation of the feature quantity is a first predetermined amount or more; a second detecting unit configured to detect components of watermark information including components corresponding to respective intervals based on the point; a determining unit configured to determine a reliability of the watermark information that is detected; and a selecting unit configured to select a first watermark information from the watermark information based on a result of determination determined by the determining unit.

    摘要翻译： 根据实施例，信息处理设备包括：提取单元，被配置为提取内容的特征量; 第一检测单元，被配置为检测特征量的变化是第一预定量以上的内容中的点; 第二检测单元，被配置为基于该点检测包括与各间隔相对应的分量的水印信息的分量; 确定单元，被配置为确定检测到的水印信息的可靠性; 以及选择单元，被配置为基于由所述确定单元确定的确定结果从所述水印信息中选择第一水印信息。

    COMMUNICATION APPARATUS, KEY SERVER, AND DATA
    8.
    发明申请
    COMMUNICATION APPARATUS, KEY SERVER, AND DATA 有权
    通信设备，主要服务器和数据

    公开(公告)号：US20090316897A1

    公开(公告)日：2009-12-24

    申请号：US12401701

    申请日：2009-03-11

    申请人： Toru Kambayashi ,  Tatsuyuki Matsushita ,  Haruhiko Toyama ,  Toshinori Odaka

    发明人： Toru Kambayashi ,  Tatsuyuki Matsushita ,  Haruhiko Toyama ,  Toshinori Odaka

    IPC分类号： H04L9/00 ,  H04L9/06

    CPC分类号： H04L9/0897 ,  H04L9/3297 ,  H04L2209/603

    摘要： A communication apparatus that encrypts a plurality of pieces that constitute a part of data and transmits the encrypted pieces stores an encrypted piece that is one of the pieces encrypted by another communication apparatus, and first decryption key information used for decrypting the encrypted piece, while keeping the encrypted piece and the first decryption key information in correspondence with each other. Further, the communication apparatus generates temporary information that can be different at each time of generation, further performs an encrypting process on the encrypted piece based on the temporary information, and outputs a new encrypted piece. The communication apparatus transmits the new encrypted piece, the first decryption key information that is stored in correspondence with the encrypted piece, and second decryption key information used for decrypting the encrypting process.

    摘要翻译： 对构成数据的一部分的多个片段进行加密并发送加密件的通信装置存储作为由另一通信装置加密的片段之一的加密片，以及用于解密加密片的第一解密密钥信息，同时保持 加密件和第一解密密钥信息彼此对应。 此外，通信装置生成在每次生成时可以不同的临时信息，还根据临时信息进行对加密件的加密处理，并输出新的加密件。 通信装置发送新的加密件，与加密件对应地存储的第一解密密钥信息和用于解密加密处理的第二解密密钥信息。

    Communication apparatus, key server, and data
    9.
    发明授权
    Communication apparatus, key server, and data 有权
    通信设备，密钥服务器和数据

    公开(公告)号：US08548169B2

    公开(公告)日：2013-10-01

    申请号：US12401701

    申请日：2009-03-11

    申请人： Toru Kambayashi ,  Tatsuyuki Matsushita ,  Haruhiko Toyama ,  Toshinori Odaka

    发明人： Toru Kambayashi ,  Tatsuyuki Matsushita ,  Haruhiko Toyama ,  Toshinori Odaka

    IPC分类号： H04L29/06

    CPC分类号： H04L9/0897 ,  H04L9/3297 ,  H04L2209/603

    摘要： A communication apparatus that encrypts a plurality of pieces that constitute a part of data and transmits the encrypted pieces stores an encrypted piece that is one of the pieces encrypted by another communication apparatus, and first decryption key information used for decrypting the encrypted piece, while keeping the encrypted piece and the first decryption key information in correspondence with each other. Further, the communication apparatus generates temporary information that can be different at each time of generation, further performs an encrypting process on the encrypted piece based on the temporary information, and outputs a new encrypted piece. The communication apparatus transmits the new encrypted piece, the first decryption key information that is stored in correspondence with the encrypted piece, and second decryption key information used for decrypting the encrypting process.

    摘要翻译： 对构成数据的一部分的多个片段进行加密并发送加密件的通信装置存储作为由另一通信装置加密的片段之一的加密片，以及用于解密加密片的第一解密密钥信息，同时保持 加密件和第一解密密钥信息彼此对应。 此外，通信装置生成在每次生成时可以不同的临时信息，还根据临时信息进行对加密件的加密处理，并输出新的加密件。 通信装置发送新的加密件，与加密件对应地存储的第一解密密钥信息和用于解密加密处理的第二解密密钥信息。

    Information processing apparatus and program product
    10.
    发明授权
    Information processing apparatus and program product 有权
    信息处理设备和程序产品

    公开(公告)号：US09025772B2

    公开(公告)日：2015-05-05

    申请号：US13423410

    申请日：2012-03-19

    申请人： Toru Kambayashi ,  Yoshikazu Hanatani ,  Yuichi Komano ,  Yoshihiro Oba ,  Satoshi Ito ,  Taku Kato ,  Yasuro Shobatake

    发明人： Toru Kambayashi ,  Yoshikazu Hanatani ,  Yuichi Komano ,  Yoshihiro Oba ,  Satoshi Ito ,  Taku Kato ,  Yasuro Shobatake

    IPC分类号： H04L9/08 ,  G06F21/44 ,  H04L9/30

    CPC分类号： H04L9/0819 ,  G06F21/445 ,  H04L9/0844 ,  H04L9/14 ,  H04L9/3013 ,  H04L2209/24

    摘要： According to one embodiment, an information processing apparatus, which is connected to an external apparatus, includes a device key storage unit, a creating unit, a calculating unit, a communication unit, and a key calculating unit. The device key storage unit stores therein a device key. The creating unit creates a media key from the device key and a media key block. The calculating unit calculates first output information on the basis of first inherent information inherent to the information processing apparatus and public information. The communication unit transmits the first output information to the external apparatus and receives second output information calculated by the external apparatus from the external apparatus. The key calculating unit calculates a shared key shared between the information processing apparatus and the external apparatus on the basis of the media key, the first inherent information, and the second output information.

    摘要翻译： 根据一个实施例，连接到外部设备的信息处理设备包括设备密钥存储单元，创建单元，计算单元，通信单元和密钥计算单元。 设备密钥存储单元在其中存储设备密钥。 创建单元从设备密钥和媒体密钥块创建媒体密钥。 计算单元基于信息处理设备固有的第一固有信息和公共信息来计算第一输出信息。 通信单元将第一输出信息发送到外部设备，并从外部设备接收由外部设备计算出的第二输出信息。 密钥计算单元基于媒体密钥，第一固有信息和第二输出信息来计算信息处理设备和外部设备之间共享的共享密钥。