公开(公告)号：US20130339733A1

公开(公告)日：2013-12-19

申请号：US13524826

申请日：2012-06-15

申请人： Yuji Nagai ,  Taku Kato ,  Tatsuyuki Matsushita

发明人： Yuji Nagai ,  Taku Kato ,  Tatsuyuki Matsushita

IPC分类号： H04L9/32 ,  G06F7/04

CPC分类号： G06F21/44 ,  G06F21/79 ,  G06F2221/2129 ,  H04L9/3234

摘要： According to one embodiment, a device includes a cell array including an ordinary area, a hidden area, and an identification information record area in which identification information which defines a condition for accessing the hidden area is recorded. An authentication circuit performs authentication. A sensing circuit recognizes information recorded in the identification information storage area, determines the information recorded in the identification information record area when an access request selects the hidden area, validates an access to the hidden area when determined that the identification information is recorded, and invalidates an access to the hidden area when determined that the identification information is not recorded.

公开(公告)号：US20080226077A1

公开(公告)日：2008-09-18

申请号：US10585854

申请日：2006-04-26

申请人： Tooru Kamibayashi ,  Taku Kato ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Atsushi Ishihara ,  Yutaka Kashihara ,  Yuji Nagai ,  Kosuke Haruki ,  Yoshikata Tobita ,  Seiichi Nakamura ,  Masahiko Mawatari

发明人： Tooru Kamibayashi ,  Taku Kato ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Atsushi Ishihara ,  Yutaka Kashihara ,  Yuji Nagai ,  Kosuke Haruki ,  Yoshikata Tobita ,  Seiichi Nakamura ,  Masahiko Mawatari

IPC分类号： H04L9/14

CPC分类号： G11B20/00181 ,  G11B20/00086 ,  G11B20/00188 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00253 ,  G11B20/00427 ,  G11B20/00507

摘要： A content playback apparatus includes an SKF selecting unit that selects one segment key file from plural segment key files recorded in a DVD media at a time of playback of a content of the sequence key section, a data selecting unit that selects each content corresponding to a segment number of each key entry registered in the selected segment key file, a moving picture data decrypting unit that decrypts the selected moving picture data by a segment key corresponding to the segment number, and a decoder that plays back the decrypted moving picture data.

摘要翻译： 内容再现装置包括：SKF选择部，其在重放序列密钥部的内容时，从记录在DVD媒体中的多个片段密钥文件中选择一个片段密钥文件;数据选择部，其选择与 注册在所选择的片段密钥文件中的每个密钥条目的段号;运动图像数据解密单元，其通过与段号相对应的段密钥对所选择的运动图像数据进行解密;以及解码器，其重放解密的运动图像数据。

公开(公告)号：US20090138714A1

公开(公告)日：2009-05-28

申请号：US12276835

申请日：2008-11-24

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： H04L9/00

CPC分类号： H04L9/083 ,  H04L2209/60

摘要： A plurality of first encrypted pieces is generated by encrypting the pieces with a first encryption key. The second encrypted piece is generated by encrypting at least one of the pieces with a second encryption key. The first encryption key and the second encryption key for encrypting the same piece are different from each other. A communication apparatus receives a first encrypted piece or a second encrypted piece from other communication apparatus for each piece, transmits a request message for requesting a decryption key for decrypting the encrypted piece to a key server, and receives the decryption key from the key server in response to the request message.

摘要翻译： 通过用第一加密密钥加密片段来生成多个第一加密片段。 通过用第二加密密钥加密至少一个片段来生成第二加密片段。 第一加密密钥和用于加密相同部件的第二加密密钥彼此不同。 通信装置从每个部件的其他通信装置接收第一加密片或第二加密片，向密钥服务器发送用于请求解密密钥的请求消息，并从密钥服务器接收解密密钥 响应请求消息。

公开(公告)号：US20050027984A1

公开(公告)日：2005-02-03

申请号：US10876705

申请日：2004-06-28

申请人： Takeshi Saito ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Taku Kato ,  Tooru Kamibayashi

发明人： Takeshi Saito ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Taku Kato ,  Tooru Kamibayashi

IPC分类号： G06F12/14 ,  G06F13/00 ,  G06F21/00 ,  G06F21/10 ,  G06F21/31 ,  G06F21/62 ,  G09C1/00 ,  G11B20/10 ,  H04L9/08 ,  H04L9/32 ,  H04L29/06 ,  H04N5/913 ,  H04N7/173 ,  H04L9/00

CPC分类号： H04L63/107 ,  G06F21/10 ,  G06F21/445 ,  G06F2221/0706 ,  G06F2221/2117 ,  G06F2221/2153 ,  H04L63/0492 ,  H04L63/061 ,  H04L63/0853 ,  H04L2463/101 ,  H04N5/913 ,  H04N7/17318 ,  H04N21/4108 ,  H04N21/4135 ,  H04N21/43632 ,  H04N21/4367 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/4627 ,  H04N21/6125 ,  H04N21/64322 ,  H04N2005/91364

摘要： An aspect of the present invention provides an information communication device for transmitting electronic data encrypted for the purpose of copyright protection, the device includes that an identification information managing unit configured to hold device identification information in connection with other information communication devices acquired through a network, an ID registration processing unit configured to register the device identification information of another connection device when the other communication device satisfies a predetermined distance condition or when common identification information that is held by both information communication devices is received from a portable device, and an authentication and key exchange processing unit configured to, for the purpose of copyright protection, complete authentication and key exchange process (AKE process) only when another information communication device whose device identification information is registered in the identification information managing unit.

摘要翻译： 本发明的一个方面提供了一种用于发送为了保护版权而加密的电子数据的信息通信装置，该装置包括一个识别信息管理单元，被配置为保存与通过网络获取的其他信息通信装置相关的装置识别信息， ID注册处理单元，被配置为当另一个通信设备满足预定距离条件时或者当从便携式设备接收到由两个信息通信设备保持的公共识别信息时，登记另一个连接设备的设备标识信息，以及认证和 密钥交换处理单元，仅在其设备标识信息在id中登记的其他信息通信设备被配置为为了版权保护的目的，完成认证和密钥交换处理（AKE处理） 识别信息管理单元。

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。

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：US20050154905A1

公开(公告)日：2005-07-14

申请号：US10867737

申请日：2004-06-16

申请人： Tadashi Kojima ,  Hisashi Yamada ,  Atsushi Ishihara ,  Taku Kato ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Shinichi Matsukawa

发明人： Tadashi Kojima ,  Hisashi Yamada ,  Atsushi Ishihara ,  Taku Kato ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Shinichi Matsukawa

IPC分类号： G06F12/14 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  H04L9/08 ,  H04N7/167

CPC分类号： G11B20/0021 ,  G11B20/00086 ,  G11B20/00289 ,  G11B20/00362 ,  G11B20/1833

摘要： Embedded proprietary data, which is configured by embedding decoding key data for decoding encoded contents into proprietary data that is a subject of ownership, is recorded on a recording medium. Since the decoding key data is embedded into the proprietary data, it is difficult to separate and take out the decoding key data from the proprietary data. When copying or the like including the proprietary data is performed, it becomes possible to legally pursue a copy or the like of the proprietary data.

摘要翻译： 嵌入式专有数据被记录在记录介质上，该专有数据通过将用于将编码内容解码的解码密钥数据嵌入到作为所有权主体的专有数据中来配置。 由于解码密钥数据被嵌入到专有数据中，因此难以从专有数据分离和取出解码密钥数据。 当执行包括专有数据的复制等时，可以合法追求专有数据的副本等。

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。

公开(公告)号：US07529935B2

公开(公告)日：2009-05-05

申请号：US10876705

申请日：2004-06-28

申请人： Takeshi Saito ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Taku Kato ,  Tooru Kamibayashi

发明人： Takeshi Saito ,  Hiroshi Isozaki ,  Tatsuyuki Matsushita ,  Taku Kato ,  Tooru Kamibayashi

IPC分类号： H04L9/00

CPC分类号： H04L63/107 ,  G06F21/10 ,  G06F21/445 ,  G06F2221/0706 ,  G06F2221/2117 ,  G06F2221/2153 ,  H04L63/0492 ,  H04L63/061 ,  H04L63/0853 ,  H04L2463/101 ,  H04N5/913 ,  H04N7/17318 ,  H04N21/4108 ,  H04N21/4135 ,  H04N21/43632 ,  H04N21/4367 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/4627 ,  H04N21/6125 ,  H04N21/64322 ,  H04N2005/91364

摘要： An aspect of the present invention provides an information communication device for transmitting electronic data encrypted for the purpose of copyright protection, the device includes that an identification information managing unit configured to hold device identification information in connection with other information communication devices acquired through a network, an ID registration processing unit configured to register the device identification information of another connection device when the other communication device satisfies a predetermined distance condition or when common identification information that is held by both information communication devices is received from a portable device, and an authentication and key exchange processing unit configured to, for the purpose of copyright protection, complete authentication and key exchange process (AKE process) only when another information communication device whose device identification information is registered in the identification information managing unit.

摘要翻译： 本发明的一个方面提供了一种用于发送为了保护版权而加密的电子数据的信息通信装置，该装置包括一个识别信息管理单元，被配置为保存与通过网络获取的其他信息通信装置相关的装置识别信息， ID注册处理单元，被配置为当另一个通信设备满足预定距离条件时或者当从便携式设备接收到由两个信息通信设备保持的公共识别信息时，登记另一个连接设备的设备标识信息，以及认证和 密钥交换处理单元，仅在其设备标识信息在id中登记的其他信息通信设备被配置为为了版权保护的目的，完成认证和密钥交换处理（AKE处理） 识别信息管理单元。