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：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：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.