QUESTIONNAIRE AGGREGATION METHOD, QUESTIONNAIRE SYSTEM, SERVER DEVICE, AND CLIENT DEVICE

摘要

PROBLEM TO BE SOLVED: To aggregate a reply data in responce to a questionnaire while remaining concealed and eliminate the reply data of invalid respondents.;SOLUTION: In the questionnaire system, a client device sends a plurality of concealed reply data to a server device and sends data information which indicates a target data in reply data used for a verification arithmetic of validity, an arithmetic type information which indicates types of the verification arithmetic, and invalid information which indicates the result of the verification arithmetic that is an index for determining whether the reply data is invalid or not. The server device executes the verification arithmetic indicated by the arithmetic type information to the target data indicated by data information with secret calculation, determines whether the reply data is invalid or not by collating the result of the verification arithmetic with the result of the verification arithmetic indicated by the invalid information, eliminates the reply data determined as invalid, and executes an aggregation arithmetic to the rest of the reply data with a secret calculation.;COPYRIGHT: (C)2012,JPO&INPIT