Patent ID: 8516239
Filing Date: 2013-08-20
Classification: H04L

Abstract:
1. A communication control device comprising: an acceptance unit that, in response to a server which cannot use authentication service provided by an external authentication server accepting authentication information for authenticating a user in the external authentication server together with a use request from an external terminal which can use the authentication service provided by the external authentication server, accepts an authentication request of the authentication information from the server; a transmission unit, in response to the acceptance unit accepting the authentication request, transmits the authentication information and a terminal authentication program to the external terminal so that the terminal authentication program is verified against an electronic certificate based on a public key of the external terminal and an electronic signature based on a private key of the external terminal and executed in the external terminal, the terminal authentication program having the electronic certificate and the electronic signature attached thereto, and the terminal authentication program causing the external terminal to function as (i) an authentication request unit which transmits the authentication information to the external authentication server and requests the external authentication server to authenticate said transmitted authentication information and (ii) a result transmission unit which transmits the result of the authentication request received from the external authentication server to the communication control device in response to the authentication request; and an authentication result transmission unit that transmits the authentication result of the external authentication server received from the external terminal to the server.