专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明申请

US20080256639A1 Verification Method, Information Processing Device, Recording Medium, Verification System, Certification Program, and Verification Program 有权
标题翻译：验证方法，信息处理设备，记录介质，验证系统，认证计划和验证程序
公开(公告)号：US20080256639A1
公开(公告)日：2008-10-16
申请号：US11661425
申请日：2006-06-27
申请人： Senichi Onoda , Masaya Yamamoto , Toshihisa Nakano , Kaoru Murase , Masayuki Kozuka , Takashi Yamanishi , Yoshitomo Osawa , Tateo Oishi , Jun Yonemitsu , Katsumi Muramatsu
发明人： Senichi Onoda , Masaya Yamamoto , Toshihisa Nakano , Kaoru Murase , Masayuki Kozuka , Takashi Yamanishi , Yoshitomo Osawa , Tateo Oishi , Jun Yonemitsu , Katsumi Muramatsu
IPC分类号： G06F21/22
CPC分类号： G06F21/10 , G06F21/53
摘要： A virtual machine can be implemented by anyone because the interface and other information necessary for implementation are publicly available. Hence, if virtual machine is implemented maliciously, a program operating thereon can be made to operate maliciously instead of operating legitimately.By comparing secret information held in memory and specific to the virtual machine with verification information which a program holds itself, the program verifies that the virtual machine on which it is running has been legitimately implemented and excludes illegitimate virtual machines.
摘要翻译：虚拟机可以由任何人实现，因为实现所需的接口和其他信息是公开的。因此，如果虚拟机被恶意实施，则可以使其上运行的程序恶意操作，而不是合法地运行。通过将存储器中保存的特定信息与特定于虚拟机的秘密信息与程序保存的验证信息进行比较，程序验证其正在运行的虚拟机已被合法实现，并排除非法虚拟机。

92. 发明授权

US07395425B2 Data protection system that protects data by encrypting the data 有权
公开(公告)号：US07395425B2
公开(公告)日：2008-07-01
申请号：US10297089
申请日：2002-03-28
申请人： Toshihisa Nakano , Motoji Ohmori , Natsume Matsuzaki , Makoto Tatebayashi
发明人： Toshihisa Nakano , Motoji Ohmori , Natsume Matsuzaki , Makoto Tatebayashi
IPC分类号： G06F7/04 , G06F7/58 , G06F12/00 , G06F12/14 , G06F13/00
CPC分类号： H04L9/08 , G06F21/10 , G06F2221/2107 , G11B20/00086 , G11B20/0021 , H04L9/0822 , H04L9/0836 , H04L9/0891 , H04L63/064 , H04L63/065 , H04L2209/60 , H04L2209/80 , H04L2463/101 , H04N5/913 , H04N7/1675 , H04N21/2347 , H04N21/26606 , H04N21/4325 , H04N21/4405 , H04N2005/91364
摘要： A data protection system is provided that reduces, to a degree, the amount of encrypted data that is distributed to a plurality of terminals. In the data protection system a terminal whose decryption keys are exposed by a dishonest party is made to be unable to decrypt the data correctly, while other terminals are able to decrypt the data correctly.The data protection system includes a plurality of terminals, and an encryption device that encrypts distribution data distributed to each terminal. Each terminal is corresponded with one node on a lowest level of a 4-ary tree structure or the like having a plurality of hierarchies. The data protection system, for each node in the tree structure, excluding those on the lowest level, determines a plurality of combination patterns that include combinations of two or more of all four nodes that are reached one level below the node, decides an individual decryption key for each determined combination pattern, and decides an individual decryption key for each node on the lowest level. Further, the data protection system has each terminal store all decryption keys decided for the nodes on the path from the node on the lowest level that corresponds to the terminal through to the node on the highest level. The data protection system prescribes nodes that are reached from the node on the lowest level that corresponds to the terminal through to the node on the highest level that correspond to a terminal that has been dishonestly analyzed as invalid nodes. For invalid nodes, other than invalid nodes on the lowest level, the data protection system designates an encryption key that corresponds to the decryption key decided in correspondence with the combination pattern that combines all nodes, excluding invalid nodes, of the four nodes that are reached one level below the node, and has the encryption device encrypt distribution data that uses each of the designated encryption keys.

93. 发明申请

US20080152137A1 Recording Device, Replay Device, Integrated Circuit, and Control Program 失效
标题翻译：记录设备，重放设备，集成电路和控制程序
公开(公告)号：US20080152137A1
公开(公告)日：2008-06-26
申请号：US11883353
申请日：2006-02-06
申请人： Toshihisa Nakano , Hideshi Ishihara , Kenji Muraki , Masayuki Kozuka
发明人： Toshihisa Nakano , Hideshi Ishihara , Kenji Muraki , Masayuki Kozuka
IPC分类号： H04N7/167 , H04L9/00
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00115 , G11B20/00268 , G11B20/00304 , G11B20/00347 , G11B20/00362 , G11B20/00442 , G11B20/00528 , G11B20/00753 , G11B2220/216 , G11B2220/2562
摘要： A recording device performs recording on a recording medium such as a DVD, and playback compatibility of the recording medium is increased. In circumstances such as when a standard is established after the manufacture of a playback apparatus, there are playback devices that physically cannot read information for decrypting encrypted data from a predetermined area of the recording medium due to the specifications of the playback apparatus, and therefore cannot use the recording medium. In order for the recording medium to be able to be used in such a playback apparatus, the recording device reads data recorded in the predetermined area of the recording medium, and records the read data in another area that is readable by the playback apparatus.
摘要翻译：记录装置在诸如DVD的记录介质上执行记录，并且记录介质的回放兼容性增加。在重放装置的制造之后建立标准的情况下，由于播放装置的规格，存在物理上不能从记录介质的预定区域读取用于解密加密数据的信息的重放装置，因此不能使用记录介质。为了能够在这种播放装置中使用记录介质，记录装置读取记录在记录介质的预定区域中的数据，并将读取的数据记录在再现装置可读的另一区域中。

94. 发明授权

US07373503B2 Public key certificate revocation list generation apparatus, revocation judgement apparatus, and authentication system 有权
标题翻译：公钥证书撤销列表生成装置，撤销判定装置和认证系统
公开(公告)号：US07373503B2
公开(公告)日：2008-05-13
申请号：US10419251
申请日：2003-04-21
申请人： Toshihisa Nakano , Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara
发明人： Toshihisa Nakano , Motoji Ohmori , Makoto Tatebayashi , Hideshi Ishihara
IPC分类号： H04L9/00
CPC分类号： G11B20/00086 , G11B20/0021 , H04L9/3268 , H04L2209/60
摘要： An authentication system is provided having a revocation list generation apparatus that constructs and stores a revocation list in a tree structure, the revocation list generation apparatus being used in combination with a revocation judgment apparatus. The authentication system improves upon conventional authentication systems because the memory capacity to store a Certificate Revocation List (CRL) in order to identify revoked certificates is reduced. The tree structure corresponds to public key certificate, which are identified by leaf identifies, and nodes from a leaf that corresponds to a revoked public key certificate.
摘要翻译：提供一种认证系统，具有构造并存储树形结构中的撤销列表的撤销列表生成装置，撤销列表生成装置与撤销判断装置结合使用。认证系统改进了常规认证系统，因为减少了用于存储证书吊销列表（CRL）以识别撤销证书的存储容量。树结构对应于由叶标识识别的公钥证书，以及对应于撤销的公钥证书的叶的节点。

95. 发明申请

US20080044017A1 Copyright protection system, recording device, and reproduction device 审中-公开
标题翻译：版权保护系统，记录装置和再现装置
公开(公告)号：US20080044017A1
公开(公告)日：2008-02-21
申请号：US11503180
申请日：2006-08-14
申请人： Toshihisa Nakano , Shunji Harada , Natsume Matsuzaki , Makoto Tatebayashi
发明人： Toshihisa Nakano , Shunji Harada , Natsume Matsuzaki , Makoto Tatebayashi
IPC分类号： H04N7/167
CPC分类号： G06F21/10 , G06F21/78 , G06F2221/0711 , G06F2221/0755 , G11B20/00086 , G11B20/00094 , G11B20/00173 , G11B20/0021 , G11B20/00246 , G11B20/00253 , G11B20/00347 , G11B20/00492 , G11B20/00514 , G11B20/0055 , G11B20/00847 , G11B20/00855 , G11B2220/2537
摘要： A copyright protection system includes a recording device and a reproduction device. The recording device writes encrypted content, an encrypted content key for decrypting the encrypted content, and license information on a recording medium on which a unique media number has been recorded in an unrewritable state. The license information is generated using both the media number and the encrypted content key, and therefore reflects both values. The reproduction device reads the media number, the encrypted content key, and the license information from the recording medium, and judges whether the license information reflects both the media number and the encrypted content key. The reproduction device decrypts the encrypted content key, and decrypts the encrypted content using the content key only if the license information reflects both values. Thus, the copyright protection system allows only original recording media to be reproduced, and prohibits reproduction of copy recording media.
摘要翻译：版权保护系统包括记录装置和再现装置。记录装置将加密内容，用于解密加密内容的加密内容密钥以及在不可重写状态下记录了唯一媒体号码的记录介质上的许可信息进行写入。使用媒体号和加密的内容密钥来生成许可信息，因此反映这两个值。再现装置从记录介质读取媒体号码，加密的内容密钥和许可信息，并且判断许可信息是否同时反映媒体号和加密的内容密钥。再现设备解密加密的内容密钥，并且仅在许可信息反映这两个值时才使用内容密钥来解密加密的内容。因此，版权保护系统仅允许再现原始记录介质，并且禁止复制记录介质的再现。

96. 发明申请

US20080034442A1 Unauthorized contents detection system 有权
公开(公告)号：US20080034442A1
公开(公告)日：2008-02-07
申请号：US11878734
申请日：2007-07-26
申请人： Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
发明人： Masao Nonaka , Yuichi Futa , Toshihisa Nakano , Kaoru Yokota , Motoji Ohmori , Masaya Miyazaki , Masaya Yamamoto , Kaoru Murase , Senichi Onoda
IPC分类号： H04L9/32
CPC分类号： H04L9/3247 , G06F21/10 , G06F21/6209 , G06F21/64 , G06F2221/0773 , H04L9/3236 , H04L2209/60 , Y10S707/99942
摘要： Processing load on an executing device for conducting playback is high during the playback of contents since the executing device performs verification of the contents validity in parallel with the contents playback, and therefore the executing device has to be equipped with a highly efficient processor. The present invention reduces the processing load involved in the verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units consisting encrypted contents recorded on the DVD. In addition, the present invention is capable of improving the accuracy of detecting unauthorized contents to some extent by randomly selecting a predetermined number of encrypted units every time the verification is performed.

97. 发明申请

US20070294714A1 Identification-information recording system, management unit, recording unit and recording control circuit 有权
标题翻译：识别信息记录系统，管理单元，记录单元和记录控制电路
公开(公告)号：US20070294714A1
公开(公告)日：2007-12-20
申请号：US11808218
申请日：2007-06-07
申请人： Masaru Yamaoka , Makoto Usui , Toshihisa Nakano
发明人： Masaru Yamaoka , Makoto Usui , Toshihisa Nakano
IPC分类号： G11B7/24
CPC分类号： G11B7/261 , G11B19/122 , G11B20/00086 , G11B20/00115 , G11B20/00188 , G11B20/00195 , G11B20/00702 , G11B20/00855 , G11B20/00971 , G11B20/10
摘要： A management server has: an identification-information reproducing unit which reproduces identification information from an optical disk; an invalid-unit intrinsic-information registration section which registers the reproduced identification information; and a restriction-lifting decision section which decides, on the basis of the registered identification information and unit intrinsic information given intrinsically to every recording unit, whether the identification information can be recorded on a master optical disk. A recording unit has: a communication section which notifies the management server of the unit intrinsic information on this recording unit; an identification-information generation section which generates the identification information recorded on the master optical disk; an identification-information recording section which records the identification information on the master optical disk; and a restriction lifting section which controls the operation of the identification-information generation section and the identification-information recording section on the basis of the decision result of the restriction-lifting decision section.
摘要翻译：管理服务器具有：识别信息再现单元，其从光盘再现识别信息; 登记再现的识别信息的无效单元固有信息登记部; 以及限制提升决定部，其基于所登记的识别信息和本质上向每个记录单元提供的单位固有信息，判断识别信息是否能够记录在主光盘上。记录单元具有：通信部，其向管理服务器通知该记录单元的单位固有信息; 识别信息生成部，其生成记录在所述主光盘上的识别信息; 识别信息记录部，其将所述识别信息记录在所述主光盘上; 以及限制提升部，其基于限制提升决定部的判定结果来控制识别信息生成部和识别信息记录部的动作。

98. 发明申请

US20070283442A1 Recording/Reproduction Device And Content Protection System 审中-公开
标题翻译：记录/再现设备和内容保护系统
公开(公告)号：US20070283442A1
公开(公告)日：2007-12-06
申请号：US10587513
申请日：2005-02-01
申请人： Toshihisa Nakano , Motoji Ohmori , Kaoru Yokota , Shunji Harada , Yoshikatsu Ito , Kazuya Fujimura , Jun Takahashi
发明人： Toshihisa Nakano , Motoji Ohmori , Kaoru Yokota , Shunji Harada , Yoshikatsu Ito , Kazuya Fujimura , Jun Takahashi
IPC分类号： H04L9/00
CPC分类号： G11B20/0021 , G06F21/10 , G11B20/00086 , G11B20/00195 , G11B20/00246 , G11B20/00253 , G11B20/00507 , H04N5/913
摘要： A recording/reproduction device 10 receives content broadcast from a content provision device 11. The recording/reproduction device 10 encrypts the received content using a device key, to generate first encrypted content. The recording/reproduction device 10 decrypts the first encrypted content to obtain the content, performs an image conversion on the obtained content to generate converted content, and encrypts the converted content using a medium key to generate second encrypted content. The recording/reproduction device 10 writes the second encrypted content, the medium key, and the device key to a portable medium 14. When the portable medium 14 is inserted in a mobile information terminal 15, the mobile information terminal 15 decrypts the second encrypted content using the medium key to obtain the converted content, and reproduces the converted content.
摘要翻译：记录/再现装置10从内容提供装置11接收内容广播。记录/再现设备10使用设备密钥加密所接收的内容，以产生第一加密内容。记录/再现设备10解密第一加密内容以获取内容，对所获得的内容执行图像转换以生成转换的内容，并且使用中密钥对转换的内容进行加密以生成第二加密内容。记录/再现设备10将第二加密内容，媒体密钥和设备密钥写入便携式介质14。当便携式媒体14被插入到移动信息终端15中时，移动信息终端15使用媒体密钥解密第二加密内容以获得转换的内容，并且再现转换的内容。

99. 发明申请

US20070256141A1 Content distribution system 有权
标题翻译：内容分发系统
公开(公告)号：US20070256141A1
公开(公告)日：2007-11-01
申请号：US11790609
申请日：2007-04-26
申请人： Toshihisa Nakano , Masao Nonaka , Yuichi Futa , Motoji Ohmori , Ryo Nojima , Kazukuni Kobara , Hideki Imai
发明人： Toshihisa Nakano , Masao Nonaka , Yuichi Futa , Motoji Ohmori , Ryo Nojima , Kazukuni Kobara , Hideki Imai
IPC分类号： H04L9/32
CPC分类号： G06F21/16 , G06F21/10 , H04L9/14 , H04L9/3247 , H04L9/3263 , H04L2209/608
摘要： A content distribution system for transferring contents between transmission device and reception device. The transmission device includes: key obtaining unit that obtains, from reception device, public keys and public key identifiers; watermark embedding unit that embeds a different public key identifier, as electronic watermark, into each of contents that are identical in substance; an encryption unit that encrypts contents using public keys to generate encrypted contents; and transmission unit that transmits encrypted contents to reception device. The reception device includes: key storage unit storing public keys, public key identifiers, and a private key that makes a pair with one of the public keys; key transmission unit that transmits public keys and public key identifiers to the transmission device; content receiving unit that receives encrypted contents from transmission device; and decryption unit that obtains a content from the received encrypted contents, using the private key.
摘要翻译：一种用于在传输设备和接收设备之间传送内容的内容分发系统。传输设备包括：密钥获取单元，从接收设备获取公钥和公开密钥标识符; 水印嵌入单元，将不同的公钥标识符作为电子水印嵌入到实质上相同的每个内容中; 加密单元，其使用公共密钥对内容进行加密以生成加密内容; 以及将加密内容发送到接收装置的发送单元。接收装置包括：存储公共密钥的密钥存储单元，公开密钥标识符和与公钥之一成对的专用密钥; 密钥发送单元，向发送装置发送公开密钥和公开密钥标识符; 从发送装置接收加密内容的内容接收单元; 以及使用所述私钥从所接收的加密内容中获取内容的解密单元。

100. 发明申请

US20070174606A1 Encryption device, key distribution device and key distribution system 有权
标题翻译：加密设备，密钥分发设备和密钥分发系统
公开(公告)号：US20070174606A1
公开(公告)日：2007-07-26
申请号：US10591269
申请日：2005-03-14
申请人： Toshihisa Nakano , Hideshi Ishihara , Makoto Tatebayashi
发明人： Toshihisa Nakano , Hideshi Ishihara , Makoto Tatebayashi
IPC分类号： H04L9/00
CPC分类号： H04L9/083 , H04L9/3247 , H04L2209/60
摘要： A key distribution system distributes key data for using content to a second encryption device that has been legitimately outsourced processing by a first encryption device. The first encryption device acquires permission information indicating that the first encryption device has permission to use the content, generates certification information by making an irreversible alteration the to permission information, and transmits the permission information and the certification information to the second encryption device. The second encryption device receives the permission information and the certification information, sends them to a key distribution device, and acquires the key data from the key distribution device. The key distribution device receives the permission information and the certification information, judges whether or not the certification information was generated by the by the first encryption device, and if judging in the affirmative, transmits the key data to the second encryption device.
摘要翻译：密钥分配系统将用于使用内容的密钥数据分配给已被第一加密设备合法外包处理的第二加密设备。第一加密装置获取表示第一加密装置具有允许使用内容的许可信息，通过对许可信息进行不可逆变更来生成认证信息，并将许可信息和认证信息发送到第二加密装置。第二加密装置接收许可信息和认证信息，将其发送到密钥分发装置，并从密钥分发装置获取密钥数据。密钥分配装置接收许可信息和认证信息，判断认证信息是否由第一加密装置生成，并且如果肯定地判断，则将密钥数据发送到第二加密装置。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式