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11. 发明专利

JP2004104750A Verify method of digital signature 审中-公开
公开(公告)号：JP2004104750A
公开(公告)日：2004-04-02
申请号：JP2003022985
申请日：2003-01-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAZAKI KUNIHIKO , OMOTO CHIKAHIRO , ITO SHINJI , TANIMOTO KOICHI , YOSHIURA YUTAKA
IPC分类号： H04L9/32
CPC分类号： H04L9/3247 , H04L2209/38
摘要： PROBLEM TO BE SOLVED: To provide a verify method which is so constituted that the reliability of signature history may be reflected appropriately, in hysteresis signature which performs verify based on signature history, to provide a mediation method and a mediator instrument which solve dispute involving the correctness of a signature based on the verify method, and to provide a history management method which reduces load of signer's signature history management.
SOLUTION: Reliability is set in signature preparation recording which constitutes signature history. The reliability of signature history is computed from the set reliability, and computed reliability is output as the reliability of verify result. The verify method which is so constituted that the reliability of signature history may be reflected appropriately, and the mediation method and the mediator instrument which solve dispute involving the correctness of a signature can be provided. The load of storage of signature history in a signer can be reduced by installing a signature history storage service instrument.
COPYRIGHT: (C)2004,JPO

12. 发明专利

JP2019020958A 情報収集支援装置および情報収集支援方法审中-公开
公开(公告)号：JP2019020958A
公开(公告)日：2019-02-07
申请号：JP2017137862
申请日：2017-07-14
申请人： HITACHI LTD
发明人： KATAYAMA TAKAHIRO , HAYASHI NAOKI , KITO TETSUO , FUJII YASUHIRO , TANIMOTO KOICHI
IPC分类号： G06F16/00 , G06F16/30
摘要：【課題】ユーザにとって未知の情報を、当該ユーザにおける情報収集先の知見有無に係わらず、効率的に収集可能とする。【解決手段】情報収集支援装置1000において、ネットワーク上における既知の情報収集先のアドレスを保持する記憶装置2003と、前記既知の情報収集先のアドレスにアクセスして収集した情報から、予め定めた所定属性の固有表現を所定ルールで抽出する処理と、前記固有表現の属性ごとに予め定めた探索アルゴリズムに、前記抽出した固有表現を適用して、未知の情報収集先を探索し、前記未知の情報収集先に存在する情報と前記固有表現との一致度を判定する処理と、前記一致度が予め定めた所定範囲にある場合、前記未知の情報収集先のアドレスを前記既知の情報収集先のアドレスとして追加する処理を実行する演算装置105を含む構成とする。【選択図】図2

13. 发明专利

JP2007135170A Electronic data delivery method 审中-公开
标题翻译：电子数据传送方法
公开(公告)号：JP2007135170A
公开(公告)日：2007-05-31
申请号：JP2005362592
申请日：2005-12-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANIMOTO KOICHI , HIRAKAWA TOMOHIRO , KUMAMOTO MASAHIRO , TANIGUCHI KAZUHIKO
IPC分类号： H04L9/28 , G06F13/00 , G06F21/24 , G06F21/62
CPC分类号： H04L9/34 , H04L9/085 , H04L51/00 , H04L63/08 , H04L63/18
摘要： PROBLEM TO BE SOLVED: To reduce the danger of wire-tapping and restoring on a path when delivering electronic data, and to easily detect tampering even if operation such as tampering is performed on a network. SOLUTION: Electronic data are delivered using the secret sharing method. A transmission source device divides the electronic data into a prescribed number of partial data by using the secret sharing method and creates an arbitrary number of auxiliary data corresponding to the prescribed number of partial data and having information required for calculating the total number of the auxiliary data and the partial data. These data are transmitted to a transmission destination device as a transmission destination of the electronic data via a network. The transmission destination device stores reception data containing a plurality of partial data and the auxiliary data in a storage device and restores the electronic data as the source data before the division from the partial data if the partial data and the auxiliary data have not been tampered. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了减少在传送电子数据时的路径上的窃听和恢复的危险，并且即使在网络上执行诸如篡改的操作也容易地检测到篡改。
解决方案：使用秘密共享方式传送电子数据。发送源设备通过使用秘密共享方法将电子数据划分为规定数量的部分数据，并创建与规定数量的部分数据相对应的任意数量的辅助数据，并具有计算辅助数据总数所需的信息和部分数据。这些数据经由网络作为电子数据的发送目的地发送到发送目的地装置。发送目的地装置将包含多个部分数据和辅助数据的接收数据存储在存储装置中，并且如果部分数据和辅助数据未被篡改，则将电子数据作为来自部分数据的分割之前的源数据恢复。版权所有（C）2007，JPO＆INPIT

14. 发明专利

JP2005332241A Control method of content delivery control server, control method of content encryption server, control method of client device, control method of license server, control method of disclosed information management server, client device and program 有权
标题翻译：内容交付控制服务器的控制方法，内容加密服务器的控制方法，客户端设备的控制方法，许可证服务器的控制方法，披露信息管理服务器，客户端设备和程序的控制方法
公开(公告)号：JP2005332241A
公开(公告)日：2005-12-02
申请号：JP2004150515
申请日：2004-05-20
申请人： Hitachi Ltd , Nippon Hoso Kyokai , 日本放送協会 , 株式会社日立製作所
发明人： TANIMOTO KOICHI , YAMADA TAKAAKI , IKEDA ERIKO , MAJIMA KEIGO , OGAWA KAZUTO , FUJII ARISA , OTAKE TAKESHI , HANAOKA GOICHIRO
IPC分类号： G06F12/14 , G06F13/00 , G06F15/00 , G06F21/00 , G06F21/10 , G06F21/60 , G06F21/62 , G06Q50/00 , G06Q50/10 , H04L9/08 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To deliver an encrypted digital content to a client device without sharing of secret information by a plurality of content servers and a plurality of license servers. SOLUTION: An encrypted content obtained by encrypting a digital content by use of a common key by a common key encryption method is stored in a content storage server in conformation to an encrypted common key obtained by encrypting the common key by use of an identifier of the digital content and disclosed information issued by a license server, and license location information showing the location of the license server which issued the disclosed information and content location information showing the location of the content storage server storing the digital content are stored in a content delivery control server in conformation with the identifier. The content delivery control server transmits, on receipt of a delivery request of the digital content with the set identifier from a client device, the license location information and content location information corresponding to the identifier to the client device. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：向多个内容服务器和多个许可证服务器共享秘密信息的客户端设备提供加密的数字内容。解决方案：通过使用公共密钥加密方法通过使用公共密钥加密数字内容而获得的加密内容被存储在内容存储服务器中，与通过使用数字内容的标识符和由许可证服务器发布的公开信息，以及示出发布所公开的信息的许可服务器的位置的许可证位置信息和表示存储数字内容的内容存储服务器的位置的内容位置信息存储在内容传送控制服务器与标识符配合。内容发送控制服务器在从客户端装置接收到具有设定标识符的数字内容的发送请求时，向客户端装置发送与该标识符对应的许可证位置信息和内容位置信息。版权所有（C）2006，JPO＆NCIPI

15. 发明专利

JP2005258234A Data transfer method and data storage device 有权
标题翻译：数据传输方法和数据存储设备
公开(公告)号：JP2005258234A
公开(公告)日：2005-09-22
申请号：JP2004071931
申请日：2004-03-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAZAKI KUNIHIKO , TANIMOTO KOICHI , OMOTO CHIKAHIRO , BESSHO RYOJI
IPC分类号： G06F21/24 , G06F12/14 , G09C1/00
摘要： PROBLEM TO BE SOLVED: To provide a proper method and a device for transferring data for reducing the threat such as interception, falsification, and import to an inappropriate device of data exported when replacing a device for managing important data such as signature generation history data. SOLUTION: In a transfer destination device, a pair of keys in a public key encryption technique are generated and, a secret key of the pair of keys is stored and a public key is outputted to the outside. In a transfer source device, the public key and a password are inputted, and transfer data wherein the data to be transferred are encrypted in accordance with the public key and the password are outputted. In the transfer destination device, the transfer data and the password are inputted, and the data to be transferred wherein the transfer data are decrypted by using the password and the secret key stored in the transfer destination device are stored. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种适当的方法和设备，用于在更换用于管理重要数据的设备（例如签名生成）时将用于减少诸如拦截，伪造和导入的威胁的数据传送到导出的数据的不适当设备历史数据解决方案：在转移目的地设备中，生成公共密钥加密技术中的一对密钥，并且存储一对密钥的秘密密钥并将公钥输出到外部。在传送源设备中，输入公钥和密码，并且输出其中根据公钥加密要传送的数据的传送数据和密码。在传送目的地设备中，输入传送数据和密码，并且存储传送数据通过使用密码和存储在传送目的地设备中的密钥进行解密的要传送的数据。版权所有（C）2005，JPO＆NCIPI

16. 发明专利

JP2003283491A Digital signature system, digital signature processor, program and recording medium 有权
标题翻译：数字签名系统，数字签名处理程序，程序和记录介质
公开(公告)号：JP2003283491A
公开(公告)日：2003-10-03
申请号：JP2002080392
申请日：2002-03-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANIMOTO KOICHI , ITO SHINJI , MIYAZAKI KUNIHIKO , OMOTO CHIKAHIRO , NISHIOKA KAZUKO
IPC分类号： G09C1/00 , H04L9/32
CPC分类号： H04L9/3247 , H04L9/3265
摘要： PROBLEM TO BE SOLVED: To efficiently realize a digital signature with high admissibility using a signature history and cross referencing the signature histories by protecting the privacy of the respective users in the case of chained verification.
SOLUTION: Signature numbers (record identification sequential numbers), created signatures and hush values of the previous signature generation records to be used for verification of the chain of the signatures are left as generation records of the respective signatures in a signature history file 2013. In addition, in order to cross reference the signature histories, the signature history file 2013 is updated also in reception of a document with signatures. Furthermore, parties of transmission/reception of the document with signatures are in a user retrieval file 2014 with the signature numbers in the case of updating the signature history file 2013, for the respective signature generation records, to what user they are transmitted or from what user they are received are investigated based on the user retrieval file 2014 in the case of cross referencing the signature histories.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：使用签名历史有效地实现具有高可接受性的数字签名，并且在链接验证的情况下通过保护各个用户的隐私来交叉参考签名历史。解决方案：签名号码（记录识别序号），用于验证签名链的先前签名生成记录的创建签名和静默值作为签名历史文件中各个签名的生成记录此外，为了交叉引用签名历史，签名历史文件2013也被更新为具有签名的文档的接收。此外，具有签名的文档的发送/接收的各方在用户检索文件2014中，在对于各个签名生成记录更新签名历史文件2013的情况下，具有签名号码到其发送的用户或从哪些用户检索文件在交叉引用签名历史的情况下，基于用户检索文件2014调查其接收到的用户。版权所有（C）2004，JPO

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