专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09698984B2 Re-encrypted data verification program, re-encryption apparatus and re-encryption system 有权
公开(公告)号：US09698984B2
公开(公告)日：2017-07-04
申请号：US14480073
申请日：2014-09-08
申请人： Kabushiki Kaisha Toshiba , Toshiba Solutions Corporation
发明人： Yoshihiro Fujii , Takuya Yoshida , Koji Okada
IPC分类号： H04L29/06 , G06F21/00 , H04L9/14 , H04L9/08 , H04L9/30 , H04L9/32
CPC分类号： H04L9/14 , H04L9/0827 , H04L9/30 , H04L9/3073 , H04L9/3247 , H04L2209/24 , H04L2209/76
摘要： In a decryption apparatus according to an embodiment, a holding device pre-holds a verification formula. A determination device performs a calculation based on the verification formula read from the holding device by substituting, into the verification formula, the part of the re-encrypted data received from a re-encryption apparatus and the public key of a re-encryption key generation apparatus and the private key of the decryption apparatus, to determine whether or not the verification formula holds true. An output device outputs verification success when a result of the determination indicates that the verification formula holds true.

2. 发明申请

US20150043735A1 RE-ENCRYPTED DATA VERIFICATION PROGRAM, RE-ENCRYPTION APPARATUS AND RE-ENCRYPTION SYSTEM 有权
标题翻译：重新加密数据验证程序，重新加密设备和重新加密系统
公开(公告)号：US20150043735A1
公开(公告)日：2015-02-12
申请号：US14480073
申请日：2014-09-08
申请人： Kabushiki Kaisha Toshiba , Toshiba Solutions Corporation
发明人： Yoshihiro FUJII , Takuya Yoshida , Koji Okada
IPC分类号： H04L9/14 , H04L9/30
CPC分类号： H04L9/14 , H04L9/0827 , H04L9/30 , H04L9/3073 , H04L9/3247 , H04L2209/24 , H04L2209/76
摘要： In a decryption apparatus according to an embodiment, a holding device pre-holds a verification formula. A determination device performs a calculation based on the verification formula read from the holding device by substituting, into the verification formula, the part of the re-encrypted data received from a re-encryption apparatus and the public key of a re-encryption key generation apparatus and the private key of the decryption apparatus, to determine whether or not the verification formula holds true. An output device outputs verification success when a result of the determination indicates that the verification formula holds true.
摘要翻译：在根据实施例的解密装置中，保持装置预先保留验证公式。确定装置基于从保持装置读取的验证公式，通过将验证公式代入从重新加密装置接收的重新加密数据的一部分和重新加密密钥生成的公开密钥来执行计算装置和私钥，以确定验证公式是否成立。当确定结果表明验证公式成立时，输出设备输出验证成功。

3. 发明授权

US09819487B2 Re-encryption key generator, re-encryption device, encryption device, decryption device, and program 有权
公开(公告)号：US09819487B2
公开(公告)日：2017-11-14
申请号：US14615561
申请日：2015-02-06
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA SOLUTIONS CORPORATION
发明人： Yoshihiro Fujii , Koji Okada , Tatsuyuki Matsushita , Ryotaro Hayashi
IPC分类号： H04L9/00 , H04L9/08 , H04L9/30 , H04L9/14 , H04L17/02
CPC分类号： H04L9/0869 , H04L9/14 , H04L9/30 , H04L9/3073 , H04L2209/24 , H04L2209/76
摘要： A re-encryption key generator according to an embodiment generates a re-encryption key to obtain re-encrypted data that can be decrypted by a second private key of a second user device by re-encrypting ciphertext obtained by encrypting plaintext by a first public key of a first user device without decryption. The re-encryption key generator stores a first private key corresponding to the first public key. The re-encryption key generator stores a second re-encryption key generation key of the second user device that is different from a second public key corresponding to the second private key. The re-encryption key generator generates the re-encryption key based on the first private key and the second re-encryption key generation key.

4. 发明授权

US09813386B2 Cooperation service providing system and server apparatus 有权
公开(公告)号：US09813386B2
公开(公告)日：2017-11-07
申请号：US14668347
申请日：2015-03-25
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA SOLUTIONS CORPORATION
发明人： Yoshihiro Fujii , Koji Okada , Hiroyuki Mayuzumi , Masahisa Tajiri
IPC分类号： H01L29/06 , H04L29/06 , G06F21/62 , G09C1/00 , H04L9/08 , G06F21/60
CPC分类号： H04L63/0428 , G06F21/602 , G06F21/62 , G06F2221/2107 , G09C1/00 , H04L9/0847 , H04L63/0471 , H04L63/061 , H04L2209/76
摘要： Upon receiving ciphertext data transmitted by each service apparatus, a cooperation apparatus according to an embodiment generates re encrypted data by performing re encryption processing for the ciphertext data using are encryption key. Each of the service apparatuses transmits, to the cooperation apparatus, a request to acquire user information of a user specified by an identification (ID) indicated by the ciphertext data and stored in the other service apparatus, together with the ciphertext data. Upon receiving the re encrypted data transmitted by the cooperation apparatus, the service apparatus acquires an ID by decrypting the re encrypted data using a private key, reads out user information, and transmits the user information to the other service apparatus.

5. 发明申请

US20140259120A1 Authentication Entity Device, Verification Device and Authentication Request Device 审中-公开
标题翻译：认证实体设备，验证设备和认证请求设备
公开(公告)号：US20140259120A1
公开(公告)日：2014-09-11
申请号：US14281407
申请日：2014-05-19
申请人： Kabushiki Kaisha Toshiba , Toshiba Solutions Corporation
发明人： Tomoaki Morijiri , Koji Okada , Hidehisa Takamizawa , Asahiko Yamada , Tatsuro Ikeda
IPC分类号： H04L29/06
CPC分类号： H04L63/0884 , H04L9/3271 , H04L2209/60
摘要： A verification device transmits challenge information to a first entity device, and for each authentication context received in return, verifies that challenge information identical to the challenge information transmitted in advance is described, to thereby confirm that the authentication context is the current one. As a result, a repetitive attack in which the past authentication context is repeatedly used is prevented and the security against repetitive attacks is improved.
摘要翻译：验证装置向第一实体设备发送询问信息，并且对于接收到的每个认证上下文，验证与先前发送的询问信息相同的质询信息，从而确认认证上下文为当前认证上下文。结果，防止重复使用过去的认证上下文的重复攻击，提高了针对重复攻击的安全性。

6. 发明申请

US20130339726A1 FILE SERVER APPARATUS AND FILE SERVER SYSTEM 审中-公开
标题翻译：文件服务器设备和文件服务器系统
公开(公告)号：US20130339726A1
公开(公告)日：2013-12-19
申请号：US13969033
申请日：2013-08-16
申请人： TOSHIBA SOLUTIONS CORPORATION , KABUSHIKI KAISHA TOSHIBA
发明人： Takuya YOSHIDA , Koji Okada
IPC分类号： H04L29/06
CPC分类号： H04L63/0471 , H04L9/0825 , H04L63/0442 , H04L2209/76
摘要： According to one embodiment, a reception unit receives post-office box's encrypted data, which is obtained by encrypting the data by using a post-office box's public key, from the sending apparatus. A re-encryption key storage unit stores a re-encryption key used for re-encrypting the post-office box's encrypted data into recipient's encrypted data, which is obtained by encrypting the data using a recipient's public key that is different from the post-office box's public key. A re-encryption unit re-encrypts the received post-office box's encrypted data to the recipient's encrypted data using the re-encryption key stored in the re-encryption key storage unit. A transmission unit transmits the re-encrypted recipient's encrypted data to the receiving apparatus.
摘要翻译：根据一个实施例，接收单元从发送装置接收通过使用邮局箱的公开密钥对数据进行加密而得到的邮局箱的加密数据。重新加密密钥存储单元将用于将邮局内加密数据重新加密的重新加密密钥存储到接收者的加密数据中，该加密数据是通过使用与邮局不同的接收者的公钥加密数据而获得的盒子的公钥。重新加密单元使用存储在重新加密密钥存储单元中的重新加密密钥将接收到的邮局盒加密数据重新加密到接收者的加密数据。发送单元将重新加密的接收者的加密数据发送到接收装置。

7. 发明授权

US09426131B2 Server apparatus and program to re-encrypt ciphertext data 有权
标题翻译：服务器设备和程序重新加密密文数据
公开(公告)号：US09426131B2
公开(公告)日：2016-08-23
申请号：US14219747
申请日：2014-03-19
申请人： Kabushiki Kaisha Toshiba , Toshiba Solutions Corporation
发明人： Ryotaro Hayashi , Tatsuyuki Matsushita , Yoshihiro Fujii , Takuya Yoshida , Koji Okada
IPC分类号： H04L29/06 , H04L9/08 , H04L9/14
CPC分类号： H04L63/0471 , H04L9/0819 , H04L9/0822 , H04L9/0825 , H04L9/0833 , H04L9/0861 , H04L9/0869 , H04L9/0894 , H04L9/14 , H04L2209/76
摘要： A server apparatus according to an embodiment generates a random number on receiving from a user apparatus a notification showing that a re-encryption key should be updated, and calculates re-encryption key data on the basis of the re-encryption key stored and the random number generated. The server apparatus transmits the re-encryption key to the user apparatus and receives, from the user apparatus, the user private key not updated yet and re-encryption key updating data calculated from the re-encryption key data on the basis of the user private key updated. The server apparatus calculates the re-encryption key updated, on the basis of the re-encryption key updating data and the random number, and replaces the re-encryption key stored in the storage device with the updated re-encryption key.
摘要翻译：根据实施例的服务器装置在从用户装置接收到的情况下生成随机数，该通知表示应当更新重新加密密钥，并且基于存储的重新加密密钥和随机数来计算重新加密密钥数据数字生成。服务器装置向用户装置发送重新加密密钥，并从用户装置接收未更新的用户私钥，并根据用户私有从重新加密密钥数据计算出的重新加密密钥更新数据密钥更新。服务器装置根据重新加密密钥更新数据和随机数计算更新的重新加密密钥，并用更新的重新加密密钥替换存储在存储装置中的重新加密密钥。

8. 发明申请

US20140050318A1 RE-ENCRYPTION KEY GENERATOR, RE-ENCRYPTION APPARATUS, AND PROGRAM 有权
标题翻译：重新加密密钥生成器，重新加密设备和程序
公开(公告)号：US20140050318A1
公开(公告)日：2014-02-20
申请号：US14063553
申请日：2013-10-25
申请人： Toshiba Solutions Corporation , Kabushiki Kaisha Toshiba
发明人： Ryotaro Hayashi , Tatsuyuki Matsushita , Yoshihiro Fujii , Takuya Yoshida , Koji Okada
IPC分类号： H04L9/14
CPC分类号： H04L9/14 , H04L9/0861 , H04L9/3073
摘要： A re-encryption key generator according to an embodiment generates a re-encryption key required to re-encrypt, without decrypting, ciphertext data obtained by encrypting plaintext data by means of a first public key of a first user device to obtain re-encrypted text data which can be decrypted by a second private key of a second user device. The first storage device stores a first private key corresponding to the first public key. The second storage device stores a second public key corresponding to the second private key. The re-encryption key generation device generates the re-encryption key based on the first private key, the second public key, and the first random number.
摘要翻译：根据实施例的重新加密密钥生成器生成重新加密所需的重新加密密钥，而不解密通过第一用户设备的第一公钥加密明文数据而获得的密文数据，以获得重新加密的文本可以由第二用户设备的第二私钥解密的数据。第一存储装置存储对应于第一公开密钥的第一私钥。第二存储装置存储对应于第二私钥的第二公钥。再加密密钥生成装置基于第一私钥，第二公钥和第一随机数生成再加密密钥。

9. 发明申请

US20130246281A1 SERVICE PROVIDING SYSTEM AND UNIT DEVICE 审中-公开
标题翻译：服务提供系统和单元设备
公开(公告)号：US20130246281A1
公开(公告)日：2013-09-19
申请号：US13891626
申请日：2013-05-10
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA SOLUTIONS CORPORATION
发明人： Asahiko YAMADA , Koji Okada , Tatsuro Ikeda
IPC分类号： G06Q20/40
CPC分类号： G06Q20/409 , G06F21/31 , G06F21/32 , G06F21/34 , G06F2221/034 , G06F2221/2115 , H04L9/3231 , H04L9/3263 , H04L9/3271
摘要： According to one embodiment, the verifying device sends, to the service providing device, the user identification information in the user identification information certificate and the execution result that indicates properness when all the verification results are proper. the service providing device reads service user identification information associated with the user identification information in response to user identification information and a verification result. The service providing device sends the service information to the user terminal in accordance with the read service user identification information.
摘要翻译：根据一个实施例，验证装置在所有验证结果合适时向服务提供装置发送用户识别信息证书中的用户标识信息和指示适当性的执行结果。响应于用户识别信息和验证结果，服务提供设备读取与用户标识信息相关联的服务用户识别信息。服务提供装置根据读取的服务用户识别信息向用户终端发送服务信息。

10. 发明授权

US09736151B2 Biometric reference information registration system, apparatus, and program 有权
公开(公告)号：US09736151B2
公开(公告)日：2017-08-15
申请号：US14670038
申请日：2015-03-26
申请人： Kabushiki Kaisha Toshiba , Toshiba Solutions Corporation
发明人： Tatsuro Ikeda , Asahiko Yamada , Koji Okada
IPC分类号： H04L29/00 , H04L29/06 , H04L9/32
CPC分类号： H04L63/0861 , H04L9/3231 , H04L9/3247 , H04L9/3268 , H04L63/0823 , H04L63/126
摘要： According to an embodiment, a biometric reference information storage apparatus transmits, to the biometric reference information certificate generation apparatus, a biometric authentication context including the challenge information, the hash value of the biometric reference information, and a first digital signature. The biometric reference information certificate generation apparatus verifies the challenge information and the first digital signature. The biometric reference information certificate generation apparatus transmits a biometric reference information certificate to the biometric reference information storage apparatus. The biometric reference information storage apparatus writes the biometric reference information and the biometric reference information certificate in a storage module.

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