Patent ID: 8327140
Filing Date: 2012-12-04
Classification: H04L,H04W

Abstract:
1. An authentication system comprising an authentication apparatus and an apparatus to be authenticated, wherein the apparatus to be authenticated is a setting management apparatus for managing setting information of the authentication apparatus, and comprises: a storing unit which stores a password and information indicative of a number of times of processing, for which the password is processed repeatedly with a predetermined one-way function; a first transmitting unit which transmits an encrypted password obtained by processing the password with the predetermined one-way function for the number of times of processing, and the information indicative of the number of times of processing to the authentication apparatus; and a second transmitting unit which transmits an encrypted password obtained by processing the password with the predetermined one-way function for a subtracted number of times derived by subtracting a predetermined subtraction number from the number of times of processing, and the subtracted number of times to the authentication apparatus, wherein the authentication apparatus performs authentication on the basis of the encrypted password that was processed for the number of times of processing, the information indicative of the number of times of processing, the encrypted password that was processed for the subtracted number of times, and the information indicative of the subtracted number of times, wherein the apparatus to be authenticated comprises a setting information transmitting unit which, when the apparatus to be authenticated is authenticated by the authentication apparatus, transmits a set of updated setting information with a period of validity to the authentication apparatus to enable the authentication apparatus to connect to a wireless network and to access the apparatus to be authenticated.