Device for sharing anonymized information, and method for sharing anonymized information

摘要

A device (300s) has an authentication ID generator (320) for applying a first one-way function to a combination of a process password and information to be shared, and generating an authentication ID; an anonymizer (330) for generating anonymized information from the authentication ID and the information to be shared; an information sharing section (340) for causing the anonymized information to be held on another device; and an anonymized information process requesting section (350) for sending a process request containing the process password, and requesting the other device to subject the held anonymized information to a predetermined process, the request being sent on the basis of a match between the authentication ID of the anonymized information and the result of the first one-way function being applied to the combination of the process password and the anonymized information held on the other device.

主权项

1. An anonymized information sharing apparatus that shares anonymized information with another apparatus, a sender of the anonymized information being anonymous, the apparatus comprising:
an authentication ID generating section comprising a processor that generates a process password by applying a first one-way function to a combination of an individual password and a data ID and generates, for each piece of information to be shared, an authentication ID by applying a second one-way function to a combination of part or all of the information to be shared, the process password, and the data ID; an anonymizing section that generates the anonymized information by adding the generated authentication ID to the information to be shared; an information sharing section that sends the generated anonymized information to the other apparatus and causes the other apparatus to hold the generated anonymized information; and an anonymized information processing requesting section that generates and transmits a process request containing the process password to the other apparatus and requests the other apparatus to perform a predetermined process on the basis of a match between the authentication ID of the anonymized information held in the other apparatus and a result obtained by applying the second one-way function to the combination of part or all of the anonymized information held in the other apparatus, the process password, and the data ID, the predetermined process being permitted only by the sender.