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1. 发明授权

EP2680488B1 SIMILARITY CALCULATION SYSTEM, SIMILARITY CALCULATION DEVICE, COMPUTER PROGRAM, AND SIMILARITY CALCULATION METHOD 有权
公开(公告)号：EP2680488B1
公开(公告)日：2019-08-21
申请号：EP11859252.6
申请日：2011-02-22
申请人： Mitsubishi Electric Corporation
发明人： HIRANO, Takato , MATSUDA, Nori , ITO, Takashi , HATTORI, Mitsuhiro , MORI, Takumi
IPC分类号： H04L9/32 , H04L9/30

2. 发明公开

EP2787681A1 DATA PROCESSING DEVICE, DATA PROCESSING METHOD, AND PROGRAM 有权
标题翻译： DATENVERARBEITUNGSVORRICHTUNG，DATENVERARBEITUNGSVERFAHREN UND PROGRAMM
公开(公告)号：EP2787681A1
公开(公告)日：2014-10-08
申请号：EP11876549.4
申请日：2011-11-30
申请人： Mitsubishi Electric Corporation
发明人： HATTORI, Mitsuhiro , HIRANO, Takato , MORI, Takumi , ITO, Takashi , MATSUDA, Nori
IPC分类号： H04L9/30 , G09C1/00
CPC分类号： H04L9/30 , H04L9/008 , H04L9/0869 , H04L9/3073 , H04L2209/56
摘要： A storage part 301 stores a public key generated based on a doubly homomorphic encryption algorithm and data encrypted by using the public key as a template to be used for authentication. A random number generating part 203 generates a random number using at least a part of the public key in the storage part 301. A template updating part 307 performs an arithmetic operation using the random number generated by the random number generating part 305 and updates the template. The storage part 301 stores the updated template by overwriting the template before being updated.
摘要翻译：存储部301存储基于双同形加密算法生成的公开密钥和使用公开密钥加密的数据作为用于认证的模板。随机数生成部203使用存储部301中的公开密钥的至少一部分来生成随机数。模板更新部307使用由随机数生成部305生成的随机数进行算术运算，并更新模板。存储部分301通过在更新之前覆盖模板来存储更新的模板。

3. 发明授权

EP2665052B1 DATA PROCESSING DEVICE AND DATA ARCHIVING DEVICE 有权
公开(公告)号：EP2665052B1
公开(公告)日：2018-08-15
申请号：EP11855270.2
申请日：2011-01-13
申请人： Mitsubishi Electric Corporation
发明人： MATSUDA, Nori , ITO, Takashi , HATTORI, Mitsuhiro , MORI, Takumi , HIRANO, Takato
IPC分类号： H04L9/08 , G09C1/00 , G06F17/30 , G06F21/62
CPC分类号： G06F21/62 , G06F21/6218 , G06F21/6272 , G06F2221/2107 , H04L9/0894
摘要： An access terminal apparatus 301 provides a group determination key being a decryption key to a data center apparatus 401 previously, and then transmits grouping information generated from a keyword of storage target data and having been encrypted to the data center apparatus 401, with encrypted data of the storage target data and tag data of the encrypted data of the storage target data. The data center apparatus 401 stores the encrypted data relating it to the tag data, decrypts a part of the grouping information with the group determination key, derives an index value from a bit value obtained by the decryption, and stores the derived index value and the tag data relating them with each other.

4. 发明授权

EP2808803B1 DATA SEARCH DEVICE, DATA SEARCH METHOD, DATA SEARCH PROGRAM, DATA REGISTRATION DEVICE, DATA REGISTRATION METHOD, DATA REGISTRATION PROGRAM AND INFORMATION PROCESSING DEVICE 有权
标题翻译：数据搜索设备，数据搜索方法，数据搜索程序登记数据设备，数据记录处理，数据登记程序及信息处理设备
公开(公告)号：EP2808803B1
公开(公告)日：2017-03-01
申请号：EP12866425.7
申请日：2012-01-25
申请人： Mitsubishi Electric Corporation
发明人： HATTORI, Mitsuhiro , MATSUDA, Nori , ITO, Takashi , MORI, Takumi , HIRANO, Takato
IPC分类号： G06F17/30 , H04L9/30 , H04L29/06
CPC分类号： H04L63/065 , H04L9/30 , H04L9/3073 , H04L2209/42

5. 发明授权

EP2787681B1 DATA PROCESSING DEVICE, DATA PROCESSING METHOD, AND PROGRAM 有权
标题翻译：数据处理装置，数据处理方法和程序
公开(公告)号：EP2787681B1
公开(公告)日：2016-10-12
申请号：EP11876549.4
申请日：2011-11-30
申请人： Mitsubishi Electric Corporation
发明人： HATTORI, Mitsuhiro , HIRANO, Takato , MORI, Takumi , ITO, Takashi , MATSUDA, Nori
IPC分类号： H04L9/30 , G09C1/00
CPC分类号： H04L9/30 , H04L9/008 , H04L9/0869 , H04L9/3073 , H04L2209/56

6. 发明公开

EP2525339A1 SECRET RETRIEVAL SYSTEM, PUBLIC PARAMETER GENERATION DEVICE, ENCRYPTION DEVICE, USER SECRET KEY GENERATION DEVICE, QUERY ISSUE DEVICE, RETRIEVAL DEVICE, COMPUTER PROGRAM, SECRET RETRIEVAL METHOD, PUBLIC PARAMETER GENERATION METHOD, ENCRYPTION METHOD, USER SECRET KEY GENERATION METHOD, QUERY ISSUE METHOD, AND RETRIEVAL METHOD 审中-公开
标题翻译： GEHEIMABRUFSYSTEM UND ABRUFVERFAHREN
公开(公告)号：EP2525339A1
公开(公告)日：2012-11-21
申请号：EP10843027.3
申请日：2010-01-13
申请人： Mitsubishi Electric Corporation
发明人： HATTORI, Mitsuhiro , MORI, Takumi , ITO, Takashi , MATSUDA, Nori , TAKASHIMA, Katsuyuki , YONEDA, Takeshi
IPC分类号： G09C1/00 , G06F17/30 , G06F21/24
CPC分类号： G06F21/6227 , G06F21/72 , G06F2221/2107 , G06F2221/2117 , G06F2221/2145 , H04L9/3073
摘要： In a secure search system to be used by a plurality of users, the size of a ciphertext is reduced and the need to generate a new ciphertext when a new user is added is eliminated. A public parameter generation device 100 generates a pair of a public parameter and a master secret key. Using the public parameter, an encryption device 400 encrypts a keyword and generates a ciphertext. Using the master secret key, a user secret key generation device 200 generates a user secret key of a query issuing device 300. Using the user secret key, the query issuing device 300 generates a query for searching for the keyword. Based on the ciphertext and the query, a search device 500 determines whether a hit is obtained for searching.
摘要翻译：在多个用户使用的安全搜索系统中，减少了密文的大小，并且消除了添加新用户时生成新密文的需要。公共参数生成装置100生成一对公共参数和主秘密密钥。使用公共参数，加密装置400加密关键字并生成密文。使用主秘密密钥，用户密钥生成装置200生成查询发布装置300的用户密钥。使用用户密钥，查询发布装置300生成用于搜索关键字的查询。基于密文和查询，搜索装置500确定是否获得用于搜索的命中。

7. 发明公开

EP3082123A1 FILE STORAGE SYSTEM, FILE STORAGE APPARATUS, AND USER TERMINAL 有权
标题翻译： DATEISPEICHERSYSTEM，DATEISPEICHERVORRICHTUNG UNDBENUTZERENDGERÄT
公开(公告)号：EP3082123A1
公开(公告)日：2016-10-19
申请号：EP13898923.1
申请日：2013-12-11
申请人： Mitsubishi Electric Corporation
发明人： MORI, Takumi , ICHIKAWA, Sachihiro
IPC分类号： G09C1/00 , G06F12/00 , H04L9/14
CPC分类号： G06F21/6218 , G06F3/0486 , G06F2221/2107 , G09C1/00 , H04L9/14
摘要： A data storage system (1) uses an encryption scheme in which an encrypted file can be decrypted using a decryption key when a decryption condition set in the encrypted file is satisfied by a user attribute set in the decryption key. The data storage system (1) stores encrypted files encrypted by the encryption scheme in a file storage apparatus (20). When user attribute is specified from a user terminal (10), the data storage system (1) extracts the encrypted file of which the decryption condition is satisfied by the specified user attribute from among the encrypted files stored in the file storage apparatus (20), and displays the extracted encrypted files classified by decryption condition.
摘要翻译：数据存储系统（1）使用加密方案，其中当通过在解密密钥中设置的用户属性来满足设置在加密文件中的解密条件时，可以使用解密密钥解密加密文件。数据存储系统（1）将通过加密方案加密的加密文件存储在文件存储装置（20）中。当从用户终端（10）指定用户属性时，数据存储系统（1）从文件存储装置（20）中存储的加密文件中提取由指定的用户属性解密的解密条件满足的加密文件，，并显示通过解密条件分类的提取的加密文件。

8. 发明公开

EP3079299A1 DATA PROCESSING SYSTEM, ENCRYPTION APPARATUS, DECRYPTION APPARATUS, AND PROGRAM 审中-公开
标题翻译： DATENVERARBEITUNGSSYSTEM，VERSCHLÜSSELUNGSVORRICHTUNG，ENTSCHLÜSSELUNGSVORRICHTUNGUND PROGRAMM
公开(公告)号：EP3079299A1
公开(公告)日：2016-10-12
申请号：EP13898628.6
申请日：2013-12-02
申请人： Mitsubishi Electric Corporation
发明人： ICHIKAWA, Sachihiro , OOTA, Hidenori , MATSUDA, Nori , MORI, Takumi
IPC分类号： H04L9/14 , G06F21/62 , H04L9/08
CPC分类号： H04L9/0861 , H04L9/0618 , H04L9/0819 , H04L9/0822 , H04L9/0847 , H04L9/0891 , H04L9/0894 , H04L9/14
摘要： An encrypted text transmitting apparatus 100 and a key generation apparatus 300 generate a first encryption key and a first decryption key for a first decryption algorithm, generate a second encryption key and a second decryption key for a second decryption algorithm, encrypt the first decryption key using the second encryption key according to an encryption algorithm associated with the second decryption algorithm to generate an encrypted first decryption key, and encrypt plaintext data using the first encryption key according to an encryption algorithm associated with the first decryption algorithm to generate encrypted text data. A key device 400 performs a decryption process of the encrypted first decryption key using the second decryption key according to the second decryption algorithm. An encrypted text receiving apparatus 200 performs a decryption process of the encrypted text data using the first decryption key decrypted by the key device 400, according to the first decryption algorithm.
摘要翻译：加密文本发送装置100和密钥生成装置300生成第一解密算法的第一加密密钥和第一解密密钥，生成第二解密算法的第二加密密钥和第二解密密钥，使用所述第二加密密钥根据与所述第二解密算法相关联的加密算法生成加密的第一解密密钥，并且根据与所述第一解密算法相关联的加密算法，使用所述第一加密密钥加密明文数据，以生成加密文本数据。密钥装置400使用根据第二解密算法的第二解密密钥来执行加密的第一解密密钥的解密处理。加密文本接收装置200根据第一解密算法，使用由密钥装置400解密的第一解密密钥来执行加密文本数据的解密处理。

9. 发明公开

EP2665052A1 DATA PROCESSING DEVICE AND DATA ARCHIVING DEVICE 有权
标题翻译： DATENVERARBEITUNGSVORRICHTUNG UND DATENARCHIVIERUNGSVORRICHTUNG
公开(公告)号：EP2665052A1
公开(公告)日：2013-11-20
申请号：EP11855270.2
申请日：2011-01-13
申请人： Mitsubishi Electric Corporation
发明人： MATSUDA, Nori , ITO, Takashi , HATTORI, Mitsuhiro , MORI, Takumi , HIRANO, Takato
IPC分类号： G09C1/00 , G06F17/30
CPC分类号： G06F21/62 , G06F21/6218 , G06F21/6272 , G06F2221/2107 , H04L9/0894
摘要： An access terminal apparatus 301 provides a group determination key being a decryption key to a data center apparatus 401 previously, and then transmits grouping information generated from a keyword of storage target data and having been encrypted to the data center apparatus 401, with encrypted data of the storage target data and tag data of the encrypted data of the storage target data. The data center apparatus 401 stores the encrypted data relating it to the tag data, decrypts a part of the grouping information with the group determination key, derives an index value from a bit value obtained by the decryption, and stores the derived index value and the tag data relating them with each other.
摘要翻译：接入终端装置301将作为解密密钥的组确定密钥提供给数据中心装置401，然后将从存储对象数据的关键字生成的已经被加密的分组信息发送到数据中心装置401，加密数据存储对象数据和存储对象数据的加密数据的标签数据。数据中心装置401将与标签数据相关的加密数据存储起来，利用组确定密钥对分组信息的一部分进行解密，从根据解密获得的比特值导出索引值，并存储导出的索引值和标记与它们相关的数据。

10. 发明授权

EP3082123B1 FILE STORAGE SYSTEM, FILE STORAGE APPARATUS, AND USER TERMINAL 有权
公开(公告)号：EP3082123B1
公开(公告)日：2019-07-03
申请号：EP13898923.1
申请日：2013-12-11
申请人： Mitsubishi Electric Corporation
发明人： MORI, Takumi , ICHIKAWA, Sachihiro
IPC分类号： G09C1/00 , G06F12/00 , H04L9/14 , G06F21/62 , G06F3/0486

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