ELECTRONIC CERTIFICATE MANAGEMENT DEVICE, METHOD AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a means that can simply investigate whether or not an electronic certificate is invalid. SOLUTION: A client 120 makes a request to a certificate management server 100 for an issue of an electronic certificate or invalidating the electronic certificate. The certificate management server 100 generates an electronic certificate and registers it to a repository 110 when a request from the client 120 is an issue request of the electronic certificate, and the certificate management server 100 deletes the electronic certificate from the repository 110 and informs the client 120 about it when the request from the client 120 is an invalidating request of the electronic certificate. The client 120 makes a collation request to the repository 110 to be able to investigate whether or not the electronic certificate is invalid when the client 120 acquires the electronic certificate.