Analytical device, analytical system, owner server, analytical method, encryption method, and program

Claims

1. An acquisition means for acquiring utilization data for mobility services from multiple server holders that hold such data in each region, in a format encrypted using a homomorphic encryption scheme, An analytical means for performing analysis on mobility services by linking multiple encrypted data of the aforementioned utilization across regions, An analytical apparatus comprising a transmission means for transmitting analysis results in an encrypted format.

2. The analysis apparatus according to claim 1, wherein the analysis means uses an aggregation server in each region that stores utilization data received from the plurality of owner servers to link the utilization data between regions.

3. The aforementioned mobility service is a destination recommendation service, The analysis apparatus according to claim 1, wherein the utilization data includes data held by at least one of the following: commercial facility operators, transportation operators, mobility and destination recommendation application programs.

4. The aforementioned mobility service is a congestion prediction service, The analysis apparatus according to claim 1, wherein the utilization data includes data held by at least one of the following: commercial facility operators, transportation operators, mobility and congestion prediction application programs.

5. An analysis system comprising an analysis device according to any one of claims 1 to 4, a plurality of owner servers for each region, and an aggregation server for aggregating utilization data for each region, Each of the aforementioned owner servers includes a data storage means for storing utilization data for mobility services, An encryption means for encrypting the aforementioned utilization data using a homomorphic encryption scheme, Input / output means for transmitting the aforementioned utilization data to the analysis device in an encrypted format, An analytical system equipped with the following features.

6. A data storage means for storing utilization data for mobility services, An encryption means for encrypting the aforementioned utilization data using a homomorphic encryption scheme, A holder server comprising input / output means for transmitting the aforementioned utilization data to an analysis device in an encrypted format.

7. Computers For each region, the utilization data for mobility services is obtained from multiple server holders that possess such data, in a format encrypted using homomorphic encryption. Multiple encrypted data sets are linked across regions to perform analysis on mobility services. An analysis method that transmits analysis results in an encrypted format.

8. Computers It stores usage data for mobility services, The aforementioned utilization data is encrypted using a homomorphic encryption scheme. An encryption method for transmitting the aforementioned utilization data to an analysis device in an encrypted format.

9. For each region, the utilization data for mobility services is obtained from multiple server holders that possess such data, in a format encrypted using homomorphic encryption. Multiple encrypted data sets are linked across regions to perform analysis on mobility services. A program that instructs a computer to send analysis results in an encrypted format.

10. It stores usage data for mobility services, The aforementioned utilization data is encrypted using a homomorphic encryption scheme. A program that causes a computer to transmit the aforementioned utilization data to an analysis device in an encrypted format.