Patents by Inventor Kengo Mori
Kengo Mori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11968300Abstract: A data extraction system includes a registration apparatus, a data storage apparatus, and a query apparatus. The registration apparatus generates registration data including first information obtained by encrypting secret information, which is information that a user wishes to keep secret, by using a secret key and second information obtained by encrypting the secret key by using at least biological information of the user. The data storage apparatus holds the registration data. The query apparatus acquires the registration data by generating a query for acquiring the registration data from the data storage apparatus, extracts the secret key from the registration data by using biological information of the user, and extracts the secret information from the registration data by using the extracted secret key.Type: GrantFiled: August 23, 2022Date of Patent: April 23, 2024Assignee: NEC CORPORATIONInventors: Toshiyuki Isshiki, Haruna Higo, Kengo Mori
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Publication number: 20240113433Abstract: An antenna module including a dielectric substrate having a long side and a short side, a ground electrode, a radiating element, a peripheral electrode, and a parasitic element. The radiating element is disposed to face the ground electrode. The peripheral electrode is disposed along the long side of the dielectric substrate and is electrically connected to the ground electrode. The parasitic element is disposed along the short side of the dielectric substrate and is disposed away from the radiating element. The radiating element is configured to emit radio waves in two polarization directions along the long side and the short side of the dielectric substrate. The shortest distance between the radiating element and the parasitic element is greater than the shortest distance between the radiating element and the peripheral electrode.Type: ApplicationFiled: December 14, 2023Publication date: April 4, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Kengo ONAKA, Ryo KOMURA, Hirotsugu MORI
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Publication number: 20240104182Abstract: A conventional biometric authentication system has been time-consuming and labor-intensive for users since the users are requested to re-register their biometric information. According to an aspect of the present disclosure, a biometric authentication system includes an update value generation unit configured to generate an update value, a first update processing unit configured to update, using the update value, a template generated based on biometric information, and a second update processing unit configured to update, using the update value, a verification key generated along with the template based on the biometric information using the update value.Type: ApplicationFiled: January 29, 2021Publication date: March 28, 2024Applicant: NEC CorporationInventors: Masahiro NARA, Toshihiko OKAMURA, Toshiyuki ISSHIKI, Kengo MORI, Hiroto TAMIYA
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Patent number: 11895240Abstract: In IaaS (Infrastructure as a Service), when it is desirable to delegate the authority to a user outside a system, a recipient of an access token is designated, thereby preventing illegal distribution of the access token. There is provided an access token system including a generator and a verifier. The generator generates, using secret information of a recipient, a recipient-designated access token for which the recipient is designated, and provides the recipient-designated access token to a user. The verifier verifies that the user who makes access using the recipient-designated access token is the designated recipient.Type: GrantFiled: December 15, 2016Date of Patent: February 6, 2024Assignee: NEC CORPORATIONInventors: Hikaru Tsuchida, Kengo Mori, Toshiyuki Isshiki
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Publication number: 20230319379Abstract: A wearable camera worn and used by a user includes an imaging unit configured to capture an image of a subject, an irradiation unit configured to emit light in substantially parallel to an optical axis of the imaging unit, an attachment unit for attaching the wearable camera to the user, and a movable unit that is provided at a part of the attachment unit, wherein the imaging unit and the irradiation unit are arranged at the movable unit.Type: ApplicationFiled: March 9, 2023Publication date: October 5, 2023Inventors: KAZUKI FUJII, KENGO MORI
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Publication number: 20220407683Abstract: A data extraction system includes a registration apparatus, a data storage apparatus, and a query apparatus. The registration apparatus generates registration data including first information obtained by encrypting secret information, which is information that a user wishes to keep secret, by using a secret key and second information obtained by encrypting the secret key by using at least biological information of the user. The data storage apparatus holds the registration data. The query apparatus acquires the registration data by generating a query for acquiring the registration data from the data storage apparatus, extracts the secret key from the registration data by using biological information of the user, and extracts the secret information from the registration data by using the extracted secret key.Type: ApplicationFiled: August 23, 2022Publication date: December 22, 2022Applicant: NEC CorporationInventors: Toshiyuki ISSHIKI, Haruna Higo, Kengo Mori
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Patent number: 11451388Abstract: A data extraction system includes a registration apparatus, a data storage apparatus, and a query apparatus. The registration apparatus generates registration data including first information obtained by encrypting secret information, which is information that a user wishes to keep secret, by using a secret key and second information obtained by encrypting the secret key by using at least biological information of the user. The data storage apparatus holds the registration data. The query apparatus acquires the registration data by generating a query for acquiring the registration data from the data storage apparatus, extracts the secret key from the registration data by using biological information of the user, and extracts the secret information from the registration data by using the extracted secret key.Type: GrantFiled: August 29, 2017Date of Patent: September 20, 2022Assignee: NEC CORPORATIONInventors: Toshiyuki Isshiki, Haruna Higo, Kengo Mori
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Patent number: 11451368Abstract: An encrypted information matching device 20 includes: a storage unit 240 in which representative information representing a group based on similarity in a characteristic and encrypted information to be matched belonging to the group are associated with each other and stored; an identification unit 231 which calculates a first similarity between the encrypted input information and the representative information stored in the unit 240, and which, based on the first similarity, identifies a group to be matched with the first input information; and a determination unit 232 which calculates a second similarity between the encrypted input information and the encrypted information to be matched that belongs to the group identified, in a state in which the input information and the information to be matched are encrypted, wherein the unit 232 determines the presence or absence of information to be matched which makes the calculated second similarity satisfy criteria.Type: GrantFiled: June 1, 2017Date of Patent: September 20, 2022Assignee: NEC CORPORATIONInventors: Toshiyuki Isshiki, Haruna Higo, Kengo Mori
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Patent number: 11283612Abstract: An information processing device according to the present invention includes: a memory storing instructions; and at least one processor configured to execute the instructions to perform: acquiring a first time; generating, based on the first time, a term of validity of a first access token, and generating a policy including the first access token, the term of validity, and identification information of a receiver of the first access token; generating a digital signature, based on the policy; generating a second access token including the policy and the digital signature; and transmitting the second access token to another device.Type: GrantFiled: May 30, 2017Date of Patent: March 22, 2022Assignee: NEC CORPORATIONInventors: Hikaru Tsuchida, Kengo Mori, Toshiyuki Isshiki
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Publication number: 20210374267Abstract: An information processing device according the present invention includes: a memory; and at least one processor coupled to the memory. The processor performs operations. The operations includes: transmitting a first identifier and a second identifier, which is different from the first identifier and is included in identifiers transmitted to a data management device that stores data in association with an identifier of the data, to the data management device; and selecting the data related to the first identifier from the data related to the first identifier and the second identifier received from the data management device.Type: ApplicationFiled: August 7, 2017Publication date: December 2, 2021Applicant: NEC CorporationInventors: Haruna HIGO, Toshiyuki ISSHIKI, Kengo MORI
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Publication number: 20200322124Abstract: An encrypted information matching device 20 includes: a storage unit 240 in which representative information representing a group based on similarity in a characteristic and encrypted information to be matched belonging to the group are associated with each other and stored; an identification unit 231 which calculates a first similarity between the encrypted input information and the representative information stored in the unit 240, and which, based on the first similarity, identifies a group to be matched with the first input information; and a determination unit 232 which calculates a second similarity between the encrypted input information and the encrypted information to be matched that belongs to the group identified, in a state in which the input information and the information to be matched are encrypted, wherein the unit 232 determines the presence or absence of information to be matched which makes the calculated second similarity satisfy criteria.Type: ApplicationFiled: June 1, 2017Publication date: October 8, 2020Applicant: NEC CorporationInventors: Toshiyuki ISSHIKI, Haruna HIGO, Kengo MORI
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Patent number: 10721063Abstract: An intermediate apparatus that upon reception of a request from an application apparatus, instructs a plurality of secure computation apparatuses to perform a secret computation processing, in accordance with the request, performs a part of operation of the request from the application apparatus, on at least one of a part of data included in the request or data reconstructed from shares received from a plurality of secure computation apparatuses.Type: GrantFiled: May 7, 2015Date of Patent: July 21, 2020Assignee: NEC CORPORATIONInventors: Jun Furukawa, Kengo Mori, Isamu Teranishi, Toshinori Araki
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Publication number: 20200177389Abstract: In IaaS (Infrastructure as a Service), when it is desirable to delegate the authority to a user outside a system, a recipient of an access token is designated, thereby preventing illegal distribution of the access token. There is provided an access token system including a generator and a verifier. The generator generates, using secret information of a recipient, a recipient-designated access token for which the recipient is designated, and provides the recipient-designated access token to a user. The verifier verifies that the user who makes access using the recipient-designated access token is the designated recipient.Type: ApplicationFiled: December 15, 2016Publication date: June 4, 2020Applicant: NEC CorporationInventors: Hikaru TSUCHIDA, Kengo MORI, Toshiyuki ISSHIKI
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Publication number: 20200145212Abstract: An information processing device according to the present invention includes: a memory storing instructions; and at least one processor configured to execute the instructions to perform: acquiring a first time; generating, based on the first time, a term of validity of a first access token, and generating a policy including the first access token, the term of validity, and identification information of a receiver of the first access token; generating a digital signature, based on the policy; generating a second access token including the policy and the digital signature; and transmitting the second access token to another device.Type: ApplicationFiled: May 30, 2017Publication date: May 7, 2020Applicant: NEC CorporationInventors: Hikaru TSUCHIDA, Kengo MORI, Toshiyuki ISSHIKI
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Patent number: 10503915Abstract: In a system with registration data, in a data registration phase, encrypted data is calculated by encrypting input data to be concealed by using a secret key and secret information, registration data is generated based on the encrypted data and verification key, and the registration data is stored as a registration template in a storage unit together with an identifier for uniquely identifying the registration data. In an encrypted text verification phase, a data verifying request is generated in which input data to be verified has been encrypted by using a random number and secret information, the registration template stored in the storage unit and the data verifying request are matched verified to produce a determined result, a verified result including a part or all of the registration template corresponding to the determined result is produced, and data is restored based on the verified result to produce a restored result.Type: GrantFiled: January 27, 2016Date of Patent: December 10, 2019Assignees: NEC CorporationInventors: Toshiyuki Isshiki, Kengo Mori, Toshinori Araki, Satoshi Obana
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Patent number: 10484182Abstract: In a data registration phase, encrypted data is calculated by encrypting input data to be concealed by using a secret key, registration data is generated based on the encrypted data and a verification key, and the registration data is stored as a registration template in a storage unit together with an identifier for uniquely identifying the registration data. In an encrypted text verification phase, a data verifying request is generated in which input data to be verified has been encrypted by using a random number, the registration template stored in the storage unit and the data verifying request are verified to produce a determined result, a verified result including a part or all of the registration template corresponding to the determined result is produced, and data is restored based on the verified result to produce a restored result.Type: GrantFiled: October 26, 2015Date of Patent: November 19, 2019Assignees: NEC CORPORATIONInventors: Toshiyuki Isshiki, Kengo Mori, Toshinori Araki, Satoshi Obana
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Publication number: 20190190702Abstract: A data extraction system includes a registration apparatus, a data storage apparatus, and a query apparatus. The registration apparatus generates registration data including first information obtained by encrypting secret information, which is information that a user wishes to keep secret, by using a secret key and second information obtained by encrypting the secret key by using at least biological information of the user. The data storage apparatus holds the registration data. The query apparatus acquires the registration data by generating a query for acquiring the registration data from the data storage apparatus, extracts the secret key from the registration data by using biological information of the user, and extracts the secret information from the registration data by using the extracted secret key.Type: ApplicationFiled: August 29, 2017Publication date: June 20, 2019Applicant: NEC CorporationInventors: Toshiyuki ISSHIKI, Haruna HIGO, Kengo MORI
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Publication number: 20180239910Abstract: In a system with registration data, in a data registration phase, encrypted data is calculated by encrypting input data to be concealed by using a secret key and secret information, registration data is generated based on the encrypted data and verification key, and the registration data is stored as a registration template in a storage unit together with an identifier for uniquely identifying the registration data. In an encrypted text verification phase, a data verifying request is generated in which input data to be verified has been encrypted by using a random number and secret information, the registration template stored in the storage unit and the data verifying request are matched verified to produce a determined result, a verified result including a part or all of the registration template corresponding to the determined result is produced, and data is restored based on the verified result to produce a restored result.Type: ApplicationFiled: January 27, 2016Publication date: August 23, 2018Inventors: Toshiyuki ISSHIKI, Kengo MORI, Toshinori ARAKI, Satoshi OBANA
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Patent number: 9985779Abstract: An encrypted text matching system is provided. The system is configured to generate first auxiliary data and second auxiliary to verify matching between a first encrypted text that is and a second encrypted text based on a Hamming distance between plaintexts; perform one-way conversion on at least part of the first auxiliary data; perform one-way conversion on intermediate data that is generated based on a difference between the first encrypted text and the second encrypted text and on the second auxiliary data; and determine, by using a result of the one-way conversion performed on the intermediate data as well as using the first auxiliary data that underwent the one-way conversion, whether a Hamming distance between plaintexts is equal to or less than a predetermined certain value, the Hamming distance corresponding to the difference between the first encrypted text and the second encrypted text.Type: GrantFiled: April 23, 2014Date of Patent: May 29, 2018Assignee: NEC CORPORATIONInventors: Toshiyuki Isshiki, Kengo Mori, Toshinori Araki
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Publication number: 20180139045Abstract: An intermediate apparatus that upon reception of a request from an application apparatus, instructs a plurality of secure computation apparatuses to perform a secret computation processing, in accordance with the request, performs a part of operation of the request from the application apparatus, on at least one of a part of data included in the request or data reconstructed from shares received from a plurality of secure computation apparatuses.Type: ApplicationFiled: May 7, 2015Publication date: May 17, 2018Applicant: NEC CORPORATIONInventors: Jun FURUKAWA, Kengo MORI, Isamu TERANISHI, Toshinori ARAKI