公开(公告)号：US20240289789A1

公开(公告)日：2024-08-29

申请号：US18570676

申请日：2021-06-21

Applicant: NEC Corporation

Inventor： Daisuke MATSUDA ,  Yoshiyuki ETOU ,  Satoru FUJII ,  Ryo FURUKAWA ,  Isamu TERANISHI ,  Wataru ITONAGA

IPC: G06Q20/40

CPC classification number: G06Q20/40

Abstract: A secure computing system according to the present disclosure is used to analyze financial transactions based on information regarding customer assets, and comprises: a parameter reception means that receives input of encrypted parameters of a plurality of models generated by each of a plurality of financial institutions; a secure computing means that integrates the plurality of encrypted parameters through secure computation; and an output means that outputs, in an encrypted format, the parameters integrated by the secure computing means.

公开(公告)号：US20240242273A1

公开(公告)日：2024-07-18

申请号：US18574415

申请日：2021-07-02

Applicant: NEC Corporation

Inventor： Daisuke MATSUDA ,  Yoshiyuki ETOU ,  Satoru FUJII ,  Ryo FURUKAWA ,  Wataru ITONAGA

IPC: G06Q40/02 ,  G06N20/00

CPC classification number: G06Q40/02 ,  G06N20/00

Abstract: A model generation device according to the present disclosure comprises: an information receiving means that receives input of financial transaction information including customer information which has been anonymized in each of a plurality of financial institution servers; a model generation device that generates a model for analyzing financial transactions using the financial transaction information received from the plurality of financial institution servers; and an outputting means that outputs the model generated by the model generation means.

公开(公告)号：US20240153332A1

公开(公告)日：2024-05-09

申请号：US18282016

申请日：2021-03-19

Applicant: NEC Corporation

Inventor： Yoshiyuki ETOU ,  Wataru ITONAGA ,  Daisuke MATSUDA ,  Ryo FURUKAWA

IPC: G07C13/00 ,  H04L9/08

CPC classification number: G07C13/00 ,  H04L9/085 ,  H04L2209/463

Abstract: A voting system and a voting method by which electronic voting can be securely conducted are provided. A voting system includes: a secret sharing unit that generates a plurality of shares from voting information by secret sharing; a plurality of share storage units that store the plurality of shares in a distributed manner; a first blockchain processing unit that transmits, to a node managing a blockchain, transaction data of voting conducted using the voting information in order to record the transaction data in the blockchain; and a secure computation unit that performs secure computation for analyzing the voting by using the shares stored in a distributed manner.

公开(公告)号：US20200076583A1

公开(公告)日：2020-03-05

申请号：US16533939

申请日：2019-08-07

Applicant: NEC Corporation

Inventor： Ryo FURUKAWA

IPC: H04L9/08 ,  G06F21/62 ,  G06F21/60 ,  H04L9/32

Abstract: An information processing device which includes: a secure storage accessible by only trusted software, in which a first encryption key keeping unit keeping a first encryption key is configured inside an access limit area; a second encryption key construction unit constructing a second encryption key by consolidating a plurality of pieces of distributed information; a setup processing activation unit outputting the second encryption key constructed by the second encryption key construction unit in response to activation of a local device; and a software execution unit being executed as the trusted software, constructing a common encryption key by using the second encryption key acquired from the setup processing activation unit and the first encryption key acquired from the first encryption key keeping unit, and setting up an encrypted file system by using the constructed common encryption key.

公开(公告)号：US20190386834A1

公开(公告)日：2019-12-19

申请号：US16489782

申请日：2017-03-03

Applicant: NEC Corporation

Inventor： Ryo FURUKAWA

IPC: H04L9/32 ,  G06F21/64 ,  G06Q20/38

Abstract: A blockchain management apparatus includes: a block reception part that receives a block(s) including a transaction(s) including a contract(s), input to a contract(s), an execution result(s) of a contract(s), or the like; a transaction verification part including a contract signature verification section that verifies whether a signature(s) included in the transaction(s) included in the block(s) is a signature(s) of a guarantor(s) who closely examines and guarantees the contract(s) and a contract execution result verification section that verifies that the execution result(s) of the contract(s) included in the transaction(s) is accurate; a consensus building part that builds a consensus(es) about writing of the block(s) on a blockchain with a different blockchain management apparatus(es); and a ledger storage part that stores the block(s) about which the consensus(es) has been built.

公开(公告)号：US20240320661A1

公开(公告)日：2024-09-26

申请号：US18574855

申请日：2021-07-08

Applicant: NEC Corporation

Inventor： Daisuke MATSUDA ,  Yoshiyuki ETOU ,  Satoru FUJII ,  Ryo FURUKAWA ,  Walaru ITONAGA

IPC: G06Q20/38 ,  G06Q20/40 ,  H04L9/08

CPC classification number: G06Q20/382 ,  G06Q20/401 ,  H04L9/085

Abstract: A secure computing system according to an aspect of the present disclosure includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: perform, based on a plurality of models and financial transaction information about a customer to be analyzed, analysis regarding a financial transaction of the customer to be analyzed, through secure computation using each of the models, the plurality of models having been generated for a plurality of financial institutions based on financial transaction information about customers held by each of the financial institutions; and output results of the analysis performed by the secure computing means using the plurality of models.

公开(公告)号：US20200076587A1

公开(公告)日：2020-03-05

申请号：US16533967

申请日：2019-08-07

Applicant: NEC Corporation

Inventor： Ryo FURUKAWA

IPC: H04L9/08 ,  G06F21/62 ,  G06F21/60 ,  H04L9/32 ,  H04L9/14

Abstract: An information processing device which includes: a secure storage accessible by only trusted software, in which a first encryption key keeping unit keeping a first encryption key is configured inside a access limit area; a second encryption key keeping unit keeping as a second encryption key; a setup processing activation unit acquiring the second encryption key from the second encryption key keeping unit in response to activation of a local device, and outputting the acquired second encryption key; and a software execution unit being executed as the trusted software, acquiring the second encryption key from the setup processing activation unit, acquiring the first encryption key from the first encryption key keeping unit together with acquisition of the second encryption key, constructing a common encryption key by using the first encryption key and second encryption key, and setting up an encrypted file system by using the constructed common encryption key.

公开(公告)号：US20240330512A1

公开(公告)日：2024-10-03

申请号：US18293410

申请日：2021-08-12

Applicant: NEC Corporation

Inventor： Daisuke MATSUDA ,  Yoshiyuki ETOU ,  Satoru FUJII ,  Ryo FURUKAWA ,  Wataru ITONAGA

IPC: G06F21/62

CPC classification number: G06F21/6254

Abstract: A secure computation system according to an aspect of the present disclosure includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: acquire financial transaction information possessed by each of a plurality of financial institutions in a concealed format; compute an index based on the financial transaction information of the plurality of financial institutions by secure computation; and output the index.

公开(公告)号：US20150319255A1

公开(公告)日：2015-11-05

申请号：US14651456

申请日：2013-12-06

Applicant: NEC Corporation

Inventor： Ryo FURUKAWA

IPC: H04L29/08

CPC classification number: H04L67/16 ,  G06F17/30867 ,  G06Q30/02 ,  H04L67/10 ,  H04L67/22 ,  H04L67/306

Abstract: An information distribution device includes: an action information collection unit that collects action information from an action information transmission device; a rules construction unit that, on the basis of a plurality of related pieces of action information constructs personalization rules including a selection condition and selection information; a rules transmission unit that transmits the personalization rules to an information reception device; and a distribution information transmission unit that transmits distribution information stored in a distribution information storage unit to the information reception device. The information reception device includes a filtering unit, which extracts, from the personalized rules received by a rules reception unit, personalization rules including a selection condition that matches the action information acquired by an action information unit, and which selects, from the distribution information received by a distribution information reception unit, the distribution information indicated by the selection information in the extracted personalized rules.

Abstract translation: 一种信息分发装置，包括：动作信息收集单元，从动作信息发送装置收集动作信息; 规则构成单元，其基于多个相关的动作信息构成包括选择条件和选择信息的个性化规则; 将个性化规则发送到信息接收装置的规则发送单元; 以及分发信息发送单元，其将存储在分发信息存储单元中的分发信息发送到信息接收装置。 信息接收装置包括：滤波单元，其从规则接收单元接收的个性化规则提取包括与由动作信息单元获取的动作信息相匹配的选择条件的个性化规则，并且从接收到的分发信息中选择 通过分发信息接收单元，提取所提取的个性化规则中的选择信息所指示的分发信息。