Terminal device, providing server, electronic-information using method, electronic-information providing method, terminal-device program, providing-server program, mediating program and storage medium

摘要

The present invention provides a device-authentication system capable of efficiently performing authentication before using a service through a network. A CE device ( 3 ) includes a browser ( 9 ) for accessing a service server ( 4 ) and an authentication module ( 7 ) for allowing an authentication server ( 5 ) to perform device authentication. A device-authentication plug-in ( 8 ) is a plug-in having a function of starting the authentication module ( 7 ). The device-authentication plug-in ( 8 ) can be specified by a predetermined MIME format, and the browser ( 9 ) starts the device-authentication plug-in ( 8 ) after receiving an EMBED tag having the MIME format.