Patents by Inventor Eisuke Koizumi
Eisuke Koizumi 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: 11457000Abstract: An information intermediating apparatus in an information transaction system including an information providing apparatus, an information acquiring apparatus and the information intermediating apparatus connected to a communication network, includes: a first receiver that receives second information, of first and second information necessary for restoring transaction object information, and first feature information indicating a feature of the first information; a second receiver that receives second feature information from the information acquiring apparatus, the second feature information being calculated from the first information transmitted to the information acquiring apparatus from the information providing apparatus; a feature information determination unit that determines whether an identity is present between the first feature information and the second feature information; and a transmitter that transmits the second information to the information acquiring apparatus, when the feature information dType: GrantFiled: July 15, 2019Date of Patent: September 27, 2022Assignees: DENSO CORPORATION, TOHOKU UNIVERSITYInventors: Tsuneo Nakata, Naoki Iwata, Masao Sakai, Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe, Junya Iwazaki, Eisuke Koizumi
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Patent number: 11329819Abstract: An information processing system 100 comprising at least one first node 1, second nodes 2 for providing a public key change assistance service, and a blockchain 3, wherein the first node 1 comprises a new public key creation unit 151, a second node group selection unit 152, an old and new key information request unit 153, a draft contract preparation unit 154, a signature request unit 155, a first signature execution unit 156, and a registration unit 157; each second node 2 comprises an old and new key information transmission unit 251, a second signature execution unit 252, and a draft contract return unit 253; the draft contract preparation unit 154 randomly determines the order of new public keys as transmission destinations; and the signature request unit 155 and the first signature execution unit 156 perform signature request and execution, respectively, so that the order of the nodes that sign a draft transaction contract is random.Type: GrantFiled: November 5, 2019Date of Patent: May 10, 2022Assignee: TOHOKU UNIVERSITYInventors: Masao Sakai, Junya Iwazaki, Eisuke Koizumi, Shingo Hasegawa, Shuji Isobe, Masayuki Fukumitsu
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Patent number: 11216572Abstract: An information processing system 100 includes a client node 1 and an issuing node 2 for issuing a coupon having terms of use Q1. The client node 1 includes a use request unit 155 that requests to use the coupon by presenting user data D held by a user of the client node 1. The issuing node 2 includes: a use request verification unit 253 for verifying whether the information included in the user data D satisfies the terms of use Q1 upon the use request from the use request unit 155; and a use authorization unit 254 that authorizes the client node 1 to use the coupon when the information satisfies the terms of use Q1.Type: GrantFiled: July 18, 2019Date of Patent: January 4, 2022Assignee: TOHOKU UNIVERSITYInventors: Masao Sakai, Eisuke Koizumi, Junya Iwazaki, Masashi Hisai
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Publication number: 20200233972Abstract: An information processing system 100 includes a client node 1 and an issuing node 2 for issuing a coupon having terms of use Q1. The client node 1 includes a use request unit 155 that requests to use the coupon by presenting user data D held by a user of the client node 1. The issuing node 2 includes: a use request verification unit 253 for verifying whether the information included in the user data D satisfies the terms of use Q1 upon the use request from the use request unit 155; and a use authorization unit 254 that authorizes the client node 1 to use the coupon when the information satisfies the terms of use Q1.Type: ApplicationFiled: July 18, 2019Publication date: July 23, 2020Inventors: Masao SAKAI, Eisuke KOIZUMI, Junya IWAZAKI, Masashi HISAI
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Publication number: 20200153628Abstract: An information processing system 100 comprising at least one first node 1, second nodes 2 for providing a public key change assistance service, and a blockchain 3, wherein the first node 1 comprises a new public key creation unit 151, a second node group selection unit 152, an old and new key information request unit 153, a draft contract preparation unit 154, a signature request unit 155, a first signature execution unit 156, and a registration unit 157; each second node 2 comprises an old and new key information transmission unit 251, a second signature execution unit 252, and a draft contract return unit 253; the draft contract preparation unit 154 randomly determines the order of new public keys as transmission destinations; and the signature request unit 155 and the first signature execution unit 156 perform signature request and execution, respectively, so that the order of the nodes that sign a draft transaction contract is random.Type: ApplicationFiled: November 5, 2019Publication date: May 14, 2020Inventors: Masao SAKAI, Junya IWAZAKI, Eisuke KOIZUMI, Shingo HASEGAWA, Shuji ISOBE, Masayuki FUKUMITSU
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Publication number: 20200153637Abstract: An information processing system 100 includes a first node 1 that stores data; a second node 2 that receives the data from the first node 1; at least one storage node 3; and a blockchain 4. The first node 1 includes a first identification information generation unit 152, a template acquisition unit 153, a contract document preparation unit 154, a contract document release unit 155, and a storage request unit 156, wherein a template is provided with an address area in which a data-receiving address of a node that wishes to obtain the data is entered. The second node 2 includes a contract document selection unit 251, an address entry unit 252, a signature unit 253, and a registration unit 254. The at least one storage node 3 includes a storage execution unit 353, a contract completion determination unit 354, and a data transmission unit 355.Type: ApplicationFiled: November 5, 2019Publication date: May 14, 2020Inventors: Masao SAKAI, Junya IWAZAKI, Eisuke KOIZUMI, Shingo HASEGAWA, Shuji ISOBE, Masayuki FUKUMITSU
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Publication number: 20200028834Abstract: An information intermediating apparatus in an information transaction system including an information providing apparatus, an information acquiring apparatus and the information intermediating apparatus connected to a communication network, includes: a first receiver that receives second information, of first and second information necessary for restoring transaction object information, and first feature information indicating a feature of the first information; a second receiver that receives second feature information from the information acquiring apparatus, the second feature information being calculated from the first information transmitted to the information acquiring apparatus from the information providing apparatus; a feature information determination unit that determines whether an identity is present between the first feature information and the second feature information; and a transmitter that transmits the second information to the information acquiring apparatus, when the feature information dType: ApplicationFiled: July 15, 2019Publication date: January 23, 2020Inventors: Tsuneo NAKATA, Naoki IWATA, Masao SAKAI, Masayuki FUKUMITSU, Shingo HASEGAWA, Shuji ISOBE, Junya IWAZAKI, Eisuke KOIZUMI
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Software updating apparatus, software updating system, invalidation method, and invalidation program
Patent number: 9594909Abstract: To aim provide a software update apparatus including an install module group composed of a plurality of install modules. Each of the install modules has a function of receiving, from an external server, a replacement protection control module to be used for updating a protection control module having a function of verifying whether a predetermined application has been tampered with. Each of the install modules simultaneously running is verified by at least another one of the install modules simultaneously running, as to whether the install module has a possibility of performing malicious operations. If any of the install modules is verified as having the possibility of performing the malicious operations, any another one of the install modules that is verified as not having the possibility revokes the any install module verified as having the possibility.Type: GrantFiled: October 30, 2013Date of Patent: March 14, 2017Assignee: PANASONIC CORPORATIONInventors: Manabu Maeda, Yuichi Futa, Natsume Matsuzaki, Kaoru Yokota, Masao Nonaka, Yuji Unagami, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Marika Minagawa -
Patent number: 9166972Abstract: A distributing device for generating private information correctly even if shared information is destroyed or tampered with. A shared information distributing device for use in a system for managing private information by a secret sharing method, including: segmenting unit that segments private information into a first through an nth pieces of shared information; first distribution unit that distributes the n pieces of shared information to n holding devices on a one-to-one basis; and second distribution unit that distributes the n pieces of shared information to the n holding devices so that each holding device holds an ith piece of shared information distributed by the first distribution unit, as well as a pieces of shared information being different from the ith piece of shared information in ordinal position among n pieces of shared information, “i” being an integer in a range from 1 to n.Type: GrantFiled: November 25, 2014Date of Patent: October 20, 2015Assignee: Panasonic CorporationInventors: Manabu Maeda, Masao Nonaka, Yuichi Futa, Kaoru Yokota, Natsume Matsuzaki, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Masaki Yoshida
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Publication number: 20150121079Abstract: A distributing device for generating private information correctly even if shared information is destroyed or tampered with. A shared information distributing device for use in a system for managing private information by a secret sharing method, including: segmenting unit that segments private information into a first through an nth pieces of shared information; first distribution unit that distributes the n pieces of shared information to n holding devices on a one-to-one basis; and second distribution unit that distributes the n pieces of shared information to the n holding devices so that each holding device holds an ith piece of shared information distributed by the first distribution unit, as well as a pieces of shared information being different from the ith piece of shared information in ordinal position among n pieces of shared information, “i” being an integer in a range from 1 to n.Type: ApplicationFiled: November 25, 2014Publication date: April 30, 2015Inventors: Manabu MAEDA, Masao NONAKA, Yuichi FUTA, Kaoru YOKOTA, Natsume MATSUZAKI, Hiroki SHIZUYA, Masao SAKAI, Shuji ISOBE, Eisuke KOIZUMI, Shingo HASEGAWA, Masaki YOSHIDA
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Patent number: 8930660Abstract: A distributing device for generating private information correctly even if shared information is destroyed or tampered with. A shared information distributing device for use in a system for managing private information by a secret sharing method, including: segmenting unit that segments private information into a first through an nth pieces of shared information; first distribution unit that distributes the n pieces of shared information to n holding devices on a one-to-one basis; and second distribution unit that distributes the n pieces of shared information to the n holding devices so that each holding device holds an ith piece of shared information distributed by the first distribution unit, as well as a pieces of shared information being different from the ith piece of shared information in ordinal position among n pieces of shared information, “i” being an integer in a range from 1 to n.Type: GrantFiled: January 31, 2008Date of Patent: January 6, 2015Assignee: Panasonic CorporationInventors: Manabu Maeda, Masao Nonaka, Yuichi Futa, Kaoru Yokota, Natsume Matsuzaki, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Masaki Yoshida
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Patent number: 8800038Abstract: Provided is a tampering monitoring system that can identify a monitoring module that has been tampered with among a plurality of monitoring modules. A management apparatus is provided with an acquisition unit that acquires a new monitoring module that has not been tampered with, a generation unit that generates a decoy monitoring module by modifying the acquired monitoring module, a transmission unit that transmits the decoy monitoring module to the information security device and causes the information security device to install the decoy monitoring module therein, a reception unit that receives from the information security device, after the decoy monitoring module has been installed, monitoring results generated by the monitoring modules monitoring other monitoring modules, and a determination unit that identifies, by referring to the received monitoring results, a monitoring module that determines the decoy monitoring module to be valid and determines the identified monitoring module to be invalid.Type: GrantFiled: April 15, 2011Date of Patent: August 5, 2014Assignee: Panasonic CorporationInventors: Yuichi Futa, Yuji Unagami, Natsume Matsuzaki, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa
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Patent number: 8769312Abstract: Tampering monitoring system can detect whether protection control module is tampered with even if some of detection modules are tampered with. Tampering monitoring system includes protection control module detection modules, and management device. Protection control module includes: generation unit generating d pieces of distribution data from computer program, n and d being positive integers, d smaller than n; selection unit selecting d detection modules; and distribution unit distributing d pieces of distribution data to d detection modules. Each detection module judges whether received piece of distribution data is authentic to detect whether protection control module is tampered with, and transmits judgment result indicating whether protection control module is tampered with. Management device receives judgment results from d detection modules and manages protection control module with regard to tampering by using received judgment results.Type: GrantFiled: October 19, 2011Date of Patent: July 1, 2014Assignee: Panasonic CorporationInventors: Yuji Unagami, Yuichi Futa, Natsume Matsuzaki, Hiroki Shizuya, Eisuke Koizumi, Shingo Hasegawa
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Patent number: 8745735Abstract: To aim to provide a monitoring system and a program execution apparatus that are capable of maintaining the security intensity even in the case where an unauthentic install module is invalidated. Install modules included in an apparatus each monitor an install module, which is a monitoring target indicated by a monitoring pattern included therein, as to whether the install module performs malicious operations. An install module that performs malicious operations is invalidated in accordance with an instruction from an update server. The monitoring patterns are restructured by the update server such that the install modules except the invalidated install module are each monitored by at least another one of the install modules. The restructured monitoring patterns are distributed to the install modules except the invalidated install module.Type: GrantFiled: November 20, 2009Date of Patent: June 3, 2014Assignee: Panasonic CorporationInventors: Manabu Maeda, Yuji Unagami, Yuichi Futa, Natsume Matsuzaki, Masao Nonaka, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa
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Patent number: 8726374Abstract: A management device detects whether any normal monitoring module that has not been tampered with exists by referring to monitoring results received from an information security device and selects, when existence is detected, one of the monitoring modules and assumes that the selected monitoring module has been tampered with. The monitoring device then successively applies a procedure to monitoring modules other than the selected monitoring module by referring to the monitoring results, starting from the selected monitoring module, the procedure being to assume that any monitoring module determining that a monitoring module assumed to have been tampered with is normal has also been tampered with. As a result of the procedure, when all of the monitoring modules are assumed to have been tampered with the management device determines the selected monitoring module to be a normal monitoring module that has not been tampered with.Type: GrantFiled: February 15, 2010Date of Patent: May 13, 2014Assignee: Panasonic CorporationInventors: Yuji Unagami, Manabu Maeda, Yuichi Futa, Natsume Matsuzaki, Masao Nonaka, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Makoto Carlos Miyauchi
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Patent number: 8707430Abstract: An information security apparatus includes a plurality of monitoring modules that monitor for tampering. A management apparatus includes a reception unit that receives a plurality of monitoring results each generated by a source monitoring module monitoring a target monitoring module; a detection unit that detects an abnormality by referring to fewer than all of the received monitoring results; and an identification unit that identifies, when an abnormality is detected, a monitoring module that has been tampered with from among (i) a monitoring module that generates a monitoring result related to the abnormality, and (ii) one or more monitoring modules identified by tracing back through a chain of monitoring modules consecutively from the target of monitoring to the source of monitoring, starting from the monitoring module that generates the monitoring result related to the abnormality.Type: GrantFiled: April 19, 2011Date of Patent: April 22, 2014Assignee: Panasonic CorporationInventors: Yuji Unagami, Yuichi Futa, Natsume Matsuzaki, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa
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Patent number: 8683214Abstract: The present invention aims to perform tamper detection on a protection control module without having detection modules come to know the key data and functions thereof. The detection modules of the present invention perform tamper detection by verifying whether or not the correspondence between the input and output data of the application decryption process performed by the protection control module is correct. Furthermore, the present invention offers improved security against leaks of the application output data by the detection modules by having a plurality of detection modules verify different data blocks.Type: GrantFiled: September 16, 2010Date of Patent: March 25, 2014Assignee: Panasonic CorporationInventors: Yuji Unagami, Yuichi Futa, Natsume Matsuzaki, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Junya Iwazaki
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SOFTWARE UPDATING APPARATUS, SOFTWARE UPDATING SYSTEM, INVALIDATION METHOD, AND INVALIDATION PROGRAM
Publication number: 20140059679Abstract: To aim provide a software update apparatus including an install module group composed of a plurality of install modules. Each of the install modules has a function of receiving, from an external server, a replacement protection control module to be used for updating a protection control module having a function of verifying whether a predetermined application has been tampered with. Each of the install modules simultaneously running is verified by at least another one of the install modules simultaneously running, as to whether the install module has a possibility of performing malicious operations. If any of the install modules is verified as having the possibility of performing the malicious operations, any another one of the install modules that is verified as not having the possibility revokes the any install module verified as having the possibility.Type: ApplicationFiled: October 30, 2013Publication date: February 27, 2014Applicant: Panasonic CorporationInventors: Manabu MAEDA, Yuichi FUTA, Natsume MATSUZAKI, Kaoru YOKOTA, Masao NONAKA, Yuji UNAGAMI, Hiroki SHIZUYA, Masao SAKAI, Shuji ISOBE, Eisuke KOIZUMI, Shingo HASEGAWA, Marika MINAGAWA -
Software updating apparatus, software updating system, invalidation method, and invalidation program
Patent number: 8600896Abstract: To aim provide a software update apparatus including an install module group (130) composed of a plurality of install modules. Each of the install modules has a function of receiving, from an external server (200), a replacement protection control module (121) to be used for updating a protection control module (120) having a function of verifying whether a predetermined application has been tampered with. Each of the install modules simultaneously running is verified by at least another one of the install modules simultaneously running, as to whether the install module has a possibility of performing malicious operations. If any of the install modules is verified as having the possibility of performing the malicious operations, any another one of the install modules that is verified as not having the possibility revokes the any install module verified as having the possibility.Type: GrantFiled: November 6, 2008Date of Patent: December 3, 2013Assignee: Panasonic CorporationInventors: Manabu Maeda, Yuichi Futa, Natsume Matsuzaki, Kaoru Yokota, Masao Nonaka, Yuji Unagami, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Marika Minagawa -
Patent number: 8544093Abstract: A malicious-module identification device identifies and deactivates a malicious module operating in an information processing device connected thereto via a network. The malicious-module identification device is provided with a reception unit for receiving results of tampering detection from a plurality of modules for detecting tampering, and a determination unit for assuming that a module among the plurality of modules is a normal module, determining, based on the assumption, whether a contradiction occurs in the received results of tampering detection and identifying the module assumed to be a normal module as a malicious module when determining that a contradiction occurs. A deactivation unit outputs an instruction to deactivate the module identified as the malicious module.Type: GrantFiled: February 15, 2010Date of Patent: September 24, 2013Assignee: Panasonic CorporationInventors: Yuji Unagami, Manabu Maeda, Yuichi Futa, Natsume Matsuzaki, Masao Nonaka, Hiroki Shizuya, Masao Sakai, Shuji Isobe, Eisuke Koizumi, Shingo Hasegawa, Makoto Carlos Miyauchi