AUTHENTICATION SYSTEM, AUTHENTICATION KEY MANAGEMENT DEVICE, AUTHENTICATION KEY MANAGEMENT METHOD AND AUTHENTICATION KEY MANAGEMENT PROGRAM

摘要

PROBLEM TO BE SOLVED: To enable a secrete key used for challenge response authentication of a service user to be managed every service without distribution of the secrete key on the network, elimination of the secrete key caused by loss or change of a terminal and addition of a secrete key caused by addition of a terminal.;SOLUTION: An authentication key management device 300 performs prior authentication of a user corresponding to a prior authentication ID, generates a public key and a secrete key used for key authentication when there is a request for generating a public key from an authentication server 100 which receives a request of utilization registration of the authenticated user, transmits the generated public key to the authentication server 100, and stores the generated secrete key in association with the prior authentication ID. When a challenge encrypted by using the secrete key in the key authentication between the authentication server 100 and an authentication client 200 is received, the authentication key management device 300 generates a response responding to the challenge by using the challenge and the secrete key.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2016,JPO&INPIT