-
公开(公告)号：US08548169B2
公开(公告)日：2013-10-01
申请号：US12401701
申请日：2009-03-11
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。
-
公开(公告)号：US20090316897A1
公开(公告)日：2009-12-24
申请号：US12401701
申请日：2009-03-11
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。
-
3.发明申请公开(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。
-
4.发明授权Communication apparatus, communication system, transmission method, and computer program product 有权通信设备，通信系统，传输方式和计算机程序产品公开(公告)号：US08175267B2
公开(公告)日：2012-05-08
申请号：US12333704
申请日：2008-12-12
申请人： Kentaro Umesawa , Ryuiti Koike , Hideki Matsumoto , Tatsuyuki Matsushita , Taku Kato , Haruhiko Toyama , Hideaki Sato , Toru Kambayashi , Satoshi Ito
发明人： Kentaro Umesawa , Ryuiti Koike , Hideki Matsumoto , Tatsuyuki Matsushita , Taku Kato , Haruhiko Toyama , Hideaki Sato , Toru Kambayashi , Satoshi Ito
IPC分类号： H04L9/00
CPC分类号： H04L67/104 , H04L63/0428 , H04L63/06 , H04L67/1076 , H04L67/108 , H04L67/322
摘要： A communication apparatus stores encrypted pieces having plural pieces as a part of a content encrypted, and number of transmission times. At least one first piece is encrypted by plural different encryption keys. The communication apparatus selects as priority pieces plural encrypted pieces corresponding to at least one first piece among the first pieces, based on number of untransmitted encrypted pieces of which number of transmission times is zero among plural encrypted pieces of which first piece is encrypted, and stores priority piece information specifying the priority piece. When a piece request is received from other communication apparatus, the communication apparatus determines an encrypted piece to be transmitted, based on priority piece information, and transmits the encrypted piece to the other communication apparatus.
摘要翻译： 通信装置存储具有多个片段的加密片段作为加密的内容的一部分以及发送次数。 至少一个第一件由多个不同的加密密钥加密。 通信装置根据第一部分被加密的多个加密片段中的发送次数为零的未发送的加密片数，对与第一片段中的至少一个第一片相对应的多个加密片段进行优先选择，并存储 优先级信息指定优先级块。 当从其他通信装置接收到请求时，通信装置根据优先级信息确定要发送的加密件，并将加密件发送到另一通信装置。
-
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。
-
6.发明申请COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, TRANSMISSION METHOD, AND COMPUTER PROGRAM PRODUCT 有权通信设备，通信系统，传输方法和计算机程序产品公开(公告)号：US20090249490A1
公开(公告)日：2009-10-01
申请号：US12333704
申请日：2008-12-12
申请人： Kentaro UMESAWA , Ryuiti Koike , Hideki Matsumoto , Tatsuyuki Matsushita , Taku Kato , Haruhiko Toyama , Hideaki Sato , Toru Kambayashi , Satoshi Ito
发明人： Kentaro UMESAWA , Ryuiti Koike , Hideki Matsumoto , Tatsuyuki Matsushita , Taku Kato , Haruhiko Toyama , Hideaki Sato , Toru Kambayashi , Satoshi Ito
IPC分类号： H04L9/00
CPC分类号： H04L67/104 , H04L63/0428 , H04L63/06 , H04L67/1076 , H04L67/108 , H04L67/322
摘要： A communication apparatus stores encrypted pieces having plural pieces as a part of a content encrypted, and number of transmission times. At least one first piece is encrypted by plural different encryption keys. The communication apparatus selects as priority pieces plural encrypted pieces corresponding to at least one first piece among the first pieces, based on number of untransmitted encrypted pieces of which number of transmission times is zero among plural encrypted pieces of which first piece is encrypted, and stores priority piece information specifying the priority piece. When a piece request is received from other communication apparatus, the communication apparatus determines an encrypted piece to be transmitted, based on priority piece information, and transmits the encrypted piece to the other communication apparatus.
摘要翻译： 通信装置存储具有多个片段的加密片段作为加密的内容的一部分以及发送次数。 至少一个第一件由多个不同的加密密钥加密。 通信装置根据第一部分被加密的多个加密片段中的发送次数为零的未发送的加密片数，对与第一片段中的至少一个第一片相对应的多个加密片段进行优先选择，并存储 优先级信息指定优先级块。 当从其他通信装置接收到请求时，通信装置根据优先级信息确定要发送的加密件，并将加密件发送到另一通信装置。
-
公开(公告)号：US20120201376A1
公开(公告)日：2012-08-09
申请号：US13366521
申请日：2012-02-06
申请人： Toru KAMBAYASHI , Yoshihiro Oba , Tatsuyuki Matsushita , Yasuro Shobatake , Satoshi Ito , Shinji Yamanaka
发明人： Toru KAMBAYASHI , Yoshihiro Oba , Tatsuyuki Matsushita , Yasuro Shobatake , Satoshi Ito , Shinji Yamanaka
IPC分类号： H04L9/00
CPC分类号： H04L9/0891 , H04L9/0822 , H04L9/0866 , H04L9/14
摘要： According to one embodiment, a communication device, which is connected to an external device, includes a key storage unit, an acquiring unit, a key selecting unit, and a calculating unit. The key storage unit stores therein a plurality of first information items obtained by twisting a plurality of device keys with first identification information for identifying the communication device. The acquiring unit acquires second identification information for identifying the external device. The key selecting unit selects one of the plurality of first information items using a media key block process. The calculating unit calculates a shared key, which is shared with the external device, using second information item obtained by twisting the selected first information item with the second identification information.
摘要翻译： 根据一个实施例，连接到外部设备的通信设备包括密钥存储单元，获取单元，密钥选择单元和计算单元。 密钥存储单元在其中存储通过用多个设备密钥通过用于识别通信设备的第一标识信息来扭转获得的多个第一信息项。 获取单元获取用于识别外部设备的第二识别信息。 密钥选择单元使用媒体密钥块处理来选择多个第一信息项中的一个。 计算单元使用通过将所选择的第一信息项与第二识别信息进行扭转而获得的第二信息项来计算与外部设备共享的共享密钥。
-
公开(公告)号：US08885870B2
公开(公告)日：2014-11-11
申请号：US13207572
申请日：2011-08-11
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。
-
公开(公告)号：US08861723B2
公开(公告)日：2014-10-14
申请号：US13232187
申请日：2011-09-14
CPC分类号： H04L9/0897 , H04L9/0844 , H04L2209/603
摘要： In general, according to one embodiment, a storage device includes a data storage, a key storage, a receiver, an acquisition unit, a first computing unit, and a second computing unit. The data storage stores therein data. The key storage stores therein a plurality of device keys. The receiver receives identification information on an access device that accesses the data. The acquisition unit acquires an index specifying one of the device keys stored in the key storage. The first computing unit computes a second key based on the device key specified by the index and the identification information, the second key being used to perform an operation on key information acquired by performing an operation on a first key shared with the access device. The second computing unit computes the first key by performing an operation on the key information using the second key.
摘要翻译： 通常，根据一个实施例，存储设备包括数据存储器，密钥存储器，接收器，获取单元，第一计算单元和第二计算单元。 数据存储器存储数据。 密钥存储器中存储有多个设备密钥。 接收器在访问数据的接入设备上接收识别信息。 获取单元获取指定存储在密钥存储器中的设备密钥之一的索引。 第一计算单元基于由索引和识别信息指定的设备密钥来计算第二密钥，第二密钥用于对通过对与访问设备共享的第一密钥执行操作而获得的密钥信息执行操作。 第二计算单元通过使用第二密钥对密钥信息执行操作来计算第一密钥。
-
公开(公告)号：US20120063635A1
公开(公告)日：2012-03-15
申请号：US13207572
申请日：2011-08-11
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。
-
-
-
-
-
-
-
-
-
搜索结果
88 条记录 (耗时 0.025 秒)
