METHOD AND APPARATUS FOR AUTHENTICATING SUBSCRIBER AND NETWORK IN WIRELESS INTERNET SYSTEM

摘要

Provided are a method and an apparatus for authenticating a subscriber and a network, by which the subscriber and the network are provided with mutual authentication and share a key in a wireless Internet system. An authentication server generates information RES1, which is used by a mobile station for network authentication, using a private key and a first random number; and generates information XRES2, which is used for subscriber authentication, using the private key and a second random number. The mobile station generates network authentication information XRES1 using the private key and the first random number; and generates subscriber authentication information RES2 using the private key and the second random number. The mobile station compares the XRES1 with the RES1 to authenticate the network, and a gateway connected to the authentication server compares the XRES2 with the RES2 to authenticate the subscriber. Accordingly, an unauthorized user is prevented from using a network, and a subscriber's personal information is protected from being revealed to a fake server.