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11. 发明申请

US20060159272A1 Information processing system and method 有权
标题翻译：信息处理系统和方法
公开(公告)号：US20060159272A1
公开(公告)日：2006-07-20
申请号：US11342162
申请日：2006-01-27
申请人： Ryuji Ishiguro , Yoshitomo Osawa , Tateo Oishi , Tomoyuki Asano , Atsushi Mitsuzawa
发明人： Ryuji Ishiguro , Yoshitomo Osawa , Tateo Oishi , Tomoyuki Asano , Atsushi Mitsuzawa
IPC分类号： H04L9/00
CPC分类号： G11B20/00086 , G06F21/10 , G06F2221/0797 , G06F2221/2109 , G11B20/0021 , H04L9/0836 , H04L9/0891
摘要： An enabling key block (EKB) used in an encrypted key distributing tree structure is generated by forming a simplified 2-branch or multi-branch type tree with a terminal node or leaf which is capable of decrypting on the basis of a key corresponding to a node or a leaf of the simplified tree. Further, the EKB includes a tag for indicating a position of an encrypted key in the tree. The tag not only discriminates position but also stores data for judging the presence of encrypted key data within the EKB. As such, a considerable reduction in data quantity is realized, and the decrypting process in a device is also simplified.
摘要翻译：在加密的密钥分发树结构中使用的启用密钥块（EKB）通过形成具有终端节点或叶片的简化的2分支或多分支树型树生成，该终端节点或叶片能够基于对应于节点或简化树的叶。此外，EKB包括用于指示加密密钥在树中的位置的标签。该标签不仅识别位置，还存储用于判断EKB内加密密钥数据的存在的数据。因此，实现了数据量的显着减少，并且设备中的解密处理也被简化。

12. 发明申请

US20050228809A1 Information processing system and method 失效
标题翻译：信息处理系统和方法
公开(公告)号：US20050228809A1
公开(公告)日：2005-10-13
申请号：US11132664
申请日：2005-05-19
申请人： Tomoyuki Asano , Yoshitomo Osawa , Tateo Oishi , Ryuji Ishiguro , Ryuta Taki
发明人： Tomoyuki Asano , Yoshitomo Osawa , Tateo Oishi , Ryuji Ishiguro , Ryuta Taki
IPC分类号： G06F12/14 , G06F12/00 , G06F21/62 , G11B20/00 , H04L9/00 , H04L9/08 , H04N7/167 , G06F17/30
CPC分类号： G06F21/10 , G06F2221/0755 , G06F2221/0771 , G06F2221/2107 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L2209/60
摘要： An information processing system and method are disclosed in which information processing is performed in a highly efficient manner using an enabling key block (EKB) on the basis of a tree structure including category subtrees. A key tree is formed so as to include a plurality of subtrees serving as category trees categorized in accordance with categories and managed by category entities. An EKB includes data produced by selecting a path in a tree and encrypting a higher-level key in the selected path using a lower-level key in the selected path. The resultant EKB is provided to a device. Distribution of EKB's is managed on the basis of an EKB type definition list representing the correspondence between an EKB type identifier and one or more identification data identifying one or more category trees that can process an EKB of an EKB type specified by the EKB type identifier.
摘要翻译：公开了一种信息处理系统和方法，其中使用基于包括类别子树的树结构的启用密钥块（EKB）以高效的方式执行信息处理。形成关键树，以便包括用作根据类别分类并由类别实体管理的类别树的多个子树。 EKB包括通过选择树中的路径并使用所选路径中的较低级别的密钥来加密所选路径中的较高级别的密钥而产生的数据。所得到的EKB被提供给设备。基于表示EKB类型标识符与识别可以处理由EKB类型标识符指定的EKB类型的EKB的一个或多个类别树的一个或多个标识数据之间的对应关系的EKB类型定义列表来管理EKB的分发。

13. 发明申请

US20050005148A1 Contents processing system 有权
标题翻译：内容处理系统
公开(公告)号：US20050005148A1
公开(公告)日：2005-01-06
申请号：US10897684
申请日：2004-07-23
申请人： Yoshihito Ishibashi , Tateo Oishi , Tomoyuki Asano , Yoshitomo Osawa
发明人： Yoshihito Ishibashi , Tateo Oishi , Tomoyuki Asano , Yoshitomo Osawa
IPC分类号： G06F1/00 , G06F21/10 , G06F21/72 , G06Q30/00 , G06Q30/06 , H04L9/08 , H04L9/32
CPC分类号： G06F21/72 , G06F21/10 , G06F2211/008 , G06F2221/0737 , G06F2221/0753 , G06F2221/2135 , G06Q30/06 , G11B20/00724 , H04L9/0822 , H04L9/083 , H04L2209/60
摘要： A first information processing unit 100 stores identification information into a storage module 152, stores an encrypted contents signal into a mass storage unit 180, and supplies the encrypted contents signal and identification information to a second information processing unit 200 through a communication section 110. In a receiving unit 170 of the first information processing unit 100, log information generated by a purchase processing module 153 is stored into the storage module 152 every time the contents key is decoded, and the log information is transmitted at predetermined timing to a key management center 30 through the transmission section 110. The second information processing unit 200 receives the encrypted contents signal and the identification information through a communication section 210, and causes a contents processing section 260 to decode the encrypted contents signal and to append the identification information thereto.
摘要翻译：第一信息处理单元100将识别信息存储到存储模块152中，将加密内容信号存储到大容量存储单元180中，并通过通信部110将加密的内容信号和识别信息提供给第二信息处理单元200.在第一信息处理单元100的接收单元170，每当内容密钥被解码时，由购买处理模块153产生的日志信息被存储到存储模块152中，并且将日志信息以预定的定时发送到密钥管理中心第二信息处理单元200通过通信部件210接收加密的内容信号和识别信息，并使内容处理部分260对加密的内容信号进行解码并附加识别信息。

14. 发明授权

US07505599B2 Information processing system and method for managing encrypted data with tag information 失效
标题翻译：用标签信息管理加密数据的信息处理系统和方法
公开(公告)号：US07505599B2
公开(公告)日：2009-03-17
申请号：US09980952
申请日：2001-04-04
申请人： Ryuji Ishiguro , Yoshitomo Osawa , Tateo Oishi , Tomoyuki Asano , Atsushi Mitsuzawa
发明人： Ryuji Ishiguro , Yoshitomo Osawa , Tateo Oishi , Tomoyuki Asano , Atsushi Mitsuzawa
IPC分类号： H04L9/00
CPC分类号： H04L9/0836 , G06F21/10 , G06F2221/0797 , G06F2221/2107 , G06F2221/2109 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L2209/60
摘要： An enabling key block (EKB) used in an encrypted key distributing tree structure is generated by forming a simplified 2-branch or multi-branch type tree with a terminal node or leaf which is capable of decrypting on the basis of a key corresponding to a node or a leaf of the Simplified tree. Further, the EKB includes a tag for indicating a position of an encrypted key in the tree. The tag not only discriminates position but also stores data for judging the presence of encrypted key data within the EKB. As such, a considerable reduction in data quantity is realized, and the decrypting process in a device is also simplified.
摘要翻译：在加密的密钥分发树结构中使用的启用密钥块（EKB）通过形成具有终端节点或叶片的简化的2分支或多分支树型树生成，该终端节点或叶片能够基于对应于节点或简化树的叶。此外，EKB包括用于指示加密密钥在树中的位置的标签。该标签不仅识别位置，还存储用于判断EKB内加密密钥数据的存在的数据。因此，实现了数据量的显着减少，并且设备中的解密处理也被简化。

15. 发明授权

US07401231B2 Information recording/playback device and method 失效
标题翻译：信息记录/播放装置及方法
公开(公告)号：US07401231B2
公开(公告)日：2008-07-15
申请号：US10221302
申请日：2002-01-11
申请人： Ryuta Taki , Tomoyuki Asano , Tateo Oishi , Yoshitomo Osawa
发明人： Ryuta Taki , Tomoyuki Asano , Tateo Oishi , Yoshitomo Osawa
IPC分类号： G06F11/30 , G06F12/14 , H04L9/32
CPC分类号： G11B20/00086 , G06F21/10 , G06F21/78 , G11B20/00166 , G11B20/0021 , G11B20/00253 , G11B20/00731 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L2209/603
摘要： A system and method are realized which enables valid use of content by preventing unauthorized use of content which is caused by rewriting rights data. A structure is employed in which rights data including use-restriction information on content and DRM data including an encrypted content key are recorded in a digital data recording medium (media), and in which an integrity check value (ICV) for the DRM data can be stored in a recordable/playable area (protected area) by using only a dedicated IC. EKB distribution is used to execute the tree-structure key distribution to distribute keys for generating ICV-generation verifying keys. In this structure, unauthorized use of content by rewriting of the rights data is prevented.
摘要翻译：实现了通过防止由重写权限数据引起的内容的未经授权的使用来有效地使用内容的系统和方法。使用包括关于内容的使用限制信息和包括加密的内容密钥的DRM数据的权利数据记录在数字数据记录介质（媒体）中的结构，并且其中DRM数据的完整性检查值（ICV）可以通过仅使用专用IC存储在可记录/可播放区域（保护区域）中。 EKB分配用于执行树结构密钥分发，以分发用于生成ICV生成验证密钥的密钥。在这种结构中，防止通过重写权利数据来未经授权地使用内容。

16. 发明授权

US07225339B2 Information recording/playback apparatus and method 有权
标题翻译：信息记录/播放装置和方法
公开(公告)号：US07225339B2
公开(公告)日：2007-05-29
申请号：US09980272
申请日：2001-04-05
申请人： Tomoyuki Asano , Yoshitomo Osawa , Ryuji Ishiguro , Atsushi Mitsuzawa , Tateo Oishi
发明人： Tomoyuki Asano , Yoshitomo Osawa , Ryuji Ishiguro , Atsushi Mitsuzawa , Tateo Oishi
IPC分类号： H04L9/00
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00115 , G11B20/00195 , G11B20/00253 , G11B20/00507 , G11B20/00528 , H04L9/0836 , H04L2209/60
摘要： In a tree-structural key distribution system, renewed data of a master key and medium key are sent along with a key renewal block (KRB). KRB is such that each of devices included as leaves of a tree structure has a leaf key and restricted node key. A specific KRB can be generated for a group identified by a specific node and distributed to the group to restrict a device for which the key can be renewed. Any device not belonging to the group cannot decrypt the key, whereby the security of key distribution can be assured. Especially in a system using a generation-managed master key, a master key renewed with KRB can be distributed.
摘要翻译：在树结构密钥分配系统中，主密钥和中密钥的更新数据与密钥更新块（KRB）一起发送。 KRB使得作为树结构的叶片包括的每个设备具有叶密钥和受限节点密钥。可以为由特定节点识别的组生成特定的KRB，并且分配给组以限制可以更新密钥的设备。任何不属于该组的设备都不能解密该密钥，从而可以确保密钥分配的安全性。特别是在使用生成管理的主密钥的系统中，可以分配用KRB更新的主密钥。

17. 发明授权

US06911974B2 Information processing system and method 失效
标题翻译：信息处理系统和方法
公开(公告)号：US06911974B2
公开(公告)日：2005-06-28
申请号：US10204514
申请日：2001-12-21
申请人： Tomoyuki Asano , Yoshitomo Osawa , Tateo Oishi , Ryuji Ishiguro , Ryuta Taki
发明人： Tomoyuki Asano , Yoshitomo Osawa , Tateo Oishi , Ryuji Ishiguro , Ryuta Taki
IPC分类号： G06F12/14 , G06F12/00 , G06F21/62 , G11B20/00 , H04L9/00 , H04L9/08 , H04N7/167 , G09G5/00
CPC分类号： G06F21/10 , G06F2221/0755 , G06F2221/0771 , G06F2221/2107 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L2209/60
摘要： An information processing system and method are disclosed in which information processing is performed in a highly efficient manner using an enabling key block (EKB) on the basis of a tree structure including category subtrees. A key tree is formed so as to include a plurality of subtrees serving as category trees categorized in accordance with categories and managed by category entities. An EKB including data produced by selecting a path in a tree and encrypting a higher-level key in the selected path using a lower-level key in the selected path. The resultant EKB is provided to a device. Distribution of EKB's is managed on the basis of an EKB type definition list representing the correspondence between an EKB type identifier and one or more identification data identifying one or more category trees that can process an EKB of an EKB type specified by the EKB type identifier.
摘要翻译：公开了一种信息处理系统和方法，其中使用基于包括类别子树的树结构的启用密钥块（EKB）以高效的方式执行信息处理。形成关键树，以便包括用作根据类别分类并由类别实体管理的类别树的多个子树。 EKB包括通过选择树中的路径并使用所选路径中的较低级别的密钥加密所选路径中的较高级的密钥而产生的数据。所得到的EKB被提供给设备。基于表示EKB类型标识符与识别可以处理由EKB类型标识符指定的EKB类型的EKB的一个或多个类别树的一个或多个标识数据之间的对应关系的EKB类型定义列表来管理EKB的分发。

18. 发明授权

US06834346B1 Content processing system 失效
标题翻译：内容处理系统
公开(公告)号：US06834346B1
公开(公告)日：2004-12-21
申请号：US09509583
申请日：2000-03-28
申请人： Yoshihito Ishibashi , Tateo Oishi , Tomoyuki Asano , Yoshitomo Osawa
发明人： Yoshihito Ishibashi , Tateo Oishi , Tomoyuki Asano , Yoshitomo Osawa
IPC分类号： H04L916
CPC分类号： G06F21/72 , G06F21/10 , G06F2211/008 , G06F2221/0737 , G06F2221/0753 , G06F2221/2135 , G06Q30/06 , G11B20/00724 , H04L9/0822 , H04L9/083 , H04L2209/60
摘要： A first information processing unit 100 stores identification information into a storage module 152, stores an encrypted contents signal into a mass storage unit 180, and supplies the encrypted contents signal and identification information to a second information processing unit 200 through a communication section 110. In a receiving unit 170 of the first information processing unit 100, log information generated by a purchase processing module 153 is stored into the storage module 152 every time the contents key is decoded, and the log information is transmitted at predetermined timing to a key management center 30 through the transmission section 110. The second information processing unit 200 receives the encrypted contents signal and the identification information through a communication section 210, and causes a contents processing section 260 to decode the encrypted contents signal and to append the identification information thereto.
摘要翻译：第一信息处理单元100将识别信息存储到存储模块152中，将加密内容信号存储到大容量存储单元180中，并通过通信部110将加密的内容信号和识别信息提供给第二信息处理单元200.在第一信息处理单元100的接收单元170，每当内容密钥被解码时，由购买处理模块153产生的日志信息被存储到存储模块152中，并且将日志信息以预定的定时发送到密钥管理中心第二信息处理单元200通过通信部件210接收加密的内容信号和识别信息，并使内容处理部分260对加密的内容信号进行解码并附加识别信息。

19. 发明授权

US07707410B2 Information processing system and method 有权
标题翻译：信息处理系统和方法
公开(公告)号：US07707410B2
公开(公告)日：2010-04-27
申请号：US11342162
申请日：2006-01-27
申请人： Ryuji Ishiguro , Yoshitomo Osawa , Tateo Oishi , Tomoyuki Asano , Atsushi Mitsuzawa
发明人： Ryuji Ishiguro , Yoshitomo Osawa , Tateo Oishi , Tomoyuki Asano , Atsushi Mitsuzawa
IPC分类号： H04L29/06
CPC分类号： G11B20/00086 , G06F21/10 , G06F2221/0797 , G06F2221/2109 , G11B20/0021 , H04L9/0836 , H04L9/0891
摘要： An enabling key block (EKB) used in an encrypted key distributing tree structure is generated by forming a simplified 2-branch or multi-branch type tree with a terminal node or leaf which is capable of decrypting on the basis of a key corresponding to a node or a leaf of the simplified tree. Further, the EKB includes a tag for indicating a position of an encrypted key in the tree. The tag not only discriminates position but also stores data for judging the presence of encrypted key data within the EKB. As such, a considerable reduction in data quantity is realized, and the decrypting process in a device is also simplified.
摘要翻译：在加密的密钥分发树结构中使用的启用密钥块（EKB）通过形成具有终端节点或叶片的简化的2分支或多分支树型树生成，该终端节点或叶片能够基于对应于节点或简化树的叶。此外，EKB包括用于指示加密密钥在树中的位置的标签。该标签不仅识别位置，还存储用于判断EKB内加密密钥数据的存在的数据。因此，实现了数据量的显着减少，并且设备中的解密处理也被简化。

20. 发明授权

US07405731B2 Information processing system and method 失效
标题翻译：信息处理系统和方法
公开(公告)号：US07405731B2
公开(公告)日：2008-07-29
申请号：US11132664
申请日：2005-05-19
申请人： Tomoyuki Asano , Yoshitomo Osawa , Tateo Oishi , Ryuji Ishiguro , Ryuta Taki
发明人： Tomoyuki Asano , Yoshitomo Osawa , Tateo Oishi , Ryuji Ishiguro , Ryuta Taki
IPC分类号： G09G5/00
CPC分类号： G06F21/10 , G06F2221/0755 , G06F2221/0771 , G06F2221/2107 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L2209/60
摘要： An information processing system and method are disclosed in which information processing is performed in a highly efficient manner using an enabling key block (EKB) on the basis of a tree structure including category subtrees. A key tree is formed so as to include a plurality of subtrees serving as category trees categorized in accordance with categories and managed by category entities. An EKB includes data produced by selecting a path in a tree and encrypting a higher-level key in the selected path using a lower-level key in the selected path. The resultant EKB is provided to a device. Distribution of EKB's is managed on the basis of an EKB type definition list representing the correspondence between an EKB type identifier and one or more identification data identifying one or more category trees that can process an EKB of an EKB type specified by the EKB type identifier.
摘要翻译：公开了一种信息处理系统和方法，其中使用基于包括类别子树的树结构的启用密钥块（EKB）以高效的方式执行信息处理。形成关键树，以便包括用作根据类别分类并由类别实体管理的类别树的多个子树。 EKB包括通过选择树中的路径并使用所选路径中的较低级别的密钥来加密所选路径中的较高级别的密钥而产生的数据。所得到的EKB被提供给设备。基于表示EKB类型标识符与识别可以处理由EKB类型标识符指定的EKB类型的EKB的一个或多个类别树的一个或多个标识数据之间的对应关系的EKB类型定义列表来管理EKB的分发。

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