ANONYMOUS AUTHENTICATION SYSTEM, ANONYMOUS AUTHENTICATION METHOD, AND ANONYMOUS AUTHENTICATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To accurately authenticate and determine whether or not a user of an authenticated person's device belongs to a specific group.;SOLUTION: An anonymous authentication system includes a verification device 30 that extracts a cryptogram from authentication data transmitted from an authenticated person's device 20 and transmits the cryptogram to a verification auxiliary device 40 specified by a user device; and the verification auxiliary device 40 which, when a user identifier is included in a preset member list, verifies a user's signature that is decoded using a preset public key associated with a secrete key and notifies the verification result to the verification device 30. When all the verification results of the user's signature transmitted from the verification auxiliary device 40 show acceptance, the verification device 30 presents a success of the authentication to the authentication request.;COPYRIGHT: (C)2012,JPO&INPIT