Public key certificate / user information management method, issuing authority (IA) device, public key certificate / user information management program, and storage medium storing public key certificate / user information management program

摘要

PROBLEM TO BE SOLVED: To provide a user's disclosed key certificate/user information management method capable of solving the unfixed positioning of a user's disclosed key certificate in an RA user management model and executing operation suited to both operation models for the RA user management model and an IA user management model.;SOLUTION: An IA device receives an invalidation application for the disclosed key certificate of an RA itself, inputs the information of the invalidation application, retrieves a user's disclosed key certificate registered in a database from the database on the basis of the information of the invalidation application, and invalidates the retrieved user's disclosed key certificate.;COPYRIGHT: (C)2002,JPO