AUTHENTICATION SYSTEM, AUTHENTICATION PROGRAM, AUTHENTICATION SERVER, AND SUB AUTHENTICATION SERVER

摘要

When receiving an authentication request, an authentication server transmits authentication information to be used for authenticating the transmission source of the authentication request to a sub authentication server. The authentication server transmits identification information for identifying the sub authentication server subjected to transmission of the authentication information to a terminal which has transmitted the authentication request. The terminal is provided with a transmission destination storage part which stores identification information for identifying the transmission destination of the authentication request and transmits the authentication request to the transmission destination identified by the identification information stored by the transmission destination storage part. When receiving the identification information, the terminal updates the identification information stored in the transmission destination storage part by use of the received identification information. The sub authentication server is provided with an authentication information storage part which stores the authentication information transmitted to the sub authentication server by the authentication server and when receiving the authentication request, authenticates the transmission source of the authentication request by use of the authentication information stored in the authentication information storage part.