Secure computing system, business operator server, information processing system, secure computing method, and recording medium

Patent metadata

Field	Value
Publication number	US-2024232782-A1
Application number	US-202118572248-A
Country	US
Kind code	A1
Filing date	Jun 25, 2021
Priority date	Jun 25, 2021
Publication date	Jul 11, 2024
Grant date	—

Abstract

This secure computing system comprises: a parameter acceptance means for accepting, with regard to a plurality of models used for analysis of the optimization of a city based on the personal data of individuals belonging to the city and having been generated by each of a plurality of business operators, input of a plurality of concealed parameters of the plurality of models; a secure computing means for integrating by secure computation, with regard to the plurality of concealed parameters; and an output means for outputting the parameters in a concealed form that have been integrated by the secure computing means.

First claim

What is claimed is:

1 . A secure computing system comprising:
a memory storing instructions; and at least one processor configured to execute the instructions to: accept input of concealed parameters of a plurality of models generated by each of a plurality of business operators, wherein the plurality of models are used for analysis of an optimization method of a city based on personal data of an individual belonging to the city; integrate the plurality of concealed parameters by secret computation; and output the parameters integrated in a concealed form.

2 . The secure computing system according to claim 1 , wherein the at least one processor is further configured to execute the instructions to:
input information regarding the personal data of the individual belonging to each city to the model; and classify the individual based on the personal data.

3 . The secure computing system according to claim 1 , wherein the at least one processor is further configured to execute the instructions to:
input classification information classified based on the personal data of the individual belonging to the city is input to the model; and output a proposed action proposed to the individual of the classification.

4 . The secure computing system according to claim 1 , wherein the secure computation is a secure variation computation.

5 . The secure computing system according to claim 1 , wherein the plurality of business operators are contractor candidates to which implementation of the optimization method is entrusted by a local government of the city.

6 . The secure computing system according to claim 5 , wherein the at least one processor is further configured to execute the instructions to:
select the contractor candidate based on past performance information of a business related to the entrusted business.

7 . The secure computing system according to claim 6 , wherein the at least one processor is further configured to execute the instructions to:
accept an input of information regarding an entrusted business; extract a contractor candidate from past performance information of a business related to an entrusted business; and specify a contractor from among contractor candidates extracted.

8 . The secure computing system according to claim 7 , wherein the at least one processor is further configured to execute the instructions to:
acquire past performance information based on administrative document management information.

9 . The secure computing system according to claim 7 , wherein the at least one processor is further configured to execute the instructions to:
specify the contractor by using a model generated based on past performances and evaluation information for the performances.

10 . A business operator server comprising:
a memory storing instructions; and at least one processor configured to execute the instructions to: store a model for analyzing an optimization method of a city based on personal data of an individual belonging to the city; conceal parameters of a model stored; transmit parameters of the model to a secure computing system in a concealed form; restore the concealed parameter; perform analysis regarding optimization of the city by using an updated model updated by federated learning using secure computation based on information held by each city; and output a proposed action for solving a task in the city based on personal data of an individual belonging to the city.

11 . An information processing system include:
a plurality of business operator servers; and a secure computing system, wherein the plurality of business operator servers each comprising: a memory storing instructions; and at least one processor configured to execute the instructions to: store a model generated based on personal data of an individual belonging to each city and performs analysis of an optimization method of the city; conceal a parameter of a model stored; transmit a parameter of a model to a secure computing system in a concealed form; and restore the concealed parameter, and the secure computing system comprising: a memory storing instructions; and at least one processor configured to execute the instructions to: accept, for a plurality of models generated by each of a plurality of business operators, input of a plurality of concealed parameters of the plurality of models, wherein the plurality of models are used for analysis of an optimization method of a city based on personal data of an individual belonging to the city; integrate the plurality of concealed parameters by secure computation; and output the parameters integrated in a concealed form.

12 . A secure computing method comprising:
analyzing an optimization method of a city based on personal data of an individual belonging to the city, and accepting input of a plurality of concealed parameters for a plurality of models generated by each of a plurality of business operators; integrating the plurality of concealed parameters by secure computation; and outputting the integrated parameters in a concealed form.

13 . A non-transitory recording medium having stored therein a program for causing a computer to execute:
analyzing an optimization method of a city based on personal data of an individual belonging to the city, and accepting input of a plurality of concealed parameters for a plurality of models generated by each of a plurality of business operators; integrating the plurality of concealed parameters by secure computation; and outputting the integrated parameters in a concealed form.

Assignees

• Nec Corp

Inventors

• Mori Yoji
• Koide Toshio
• Itonaga Wataru

Classifications

• G06F21/6254

  by anonymising data, e.g. decorrelating personal data from the owner's identification · CPC title

• G06Q10/067 Primary

  Enterprise or organisation modelling · CPC title

• G06F21/6245 Primary

  Protecting personal data, e.g. for financial or medical purposes · CPC title

• G06F21/62

  Protecting access to data via a platform, e.g. using keys or access control rules · CPC title

• G06Q50/26

  Government or public services (business processes related to the transportation industry G06Q50/40) · CPC title