System and method for authenticating network for terminal when SIM card use UMTS terminal and UMTS system

Abstract

The invention relates to a device, which realizes a terminal authentication network when a SIM card uses a WCDMA or GSM / WCDMA terminal and a WCDMA network. The device includes a SIM card, the terminal of an authentication unit and the network entity of the authentication unit, wherein, the SIM card is used to generate a temporary key Kc, the terminal of the authentication unit is used to calculate the parameters of the terminal authentication network and compare the parameters with the corresponding parameters sent by a network, and the network entity of the authentication unit is used to calculate the parameters of the terminal authentication network of the network side, which are then sent to the terminal. The invention provides a method and the device, which can be conveniently realized and applied and realize the terminal authentication network when the SIM card of 2G uses the WCDMA or GSM / WCDMA terminal and the WCDMA network, so a bidirectional authentication mechanism is provided to make up for the security vulnerability of being attacked by counterfeit base stations, thus enhancing the security mechanism under the widely existing situations.

Description

technical field [0001] The present invention relates to the Subscriber Identity Module (hereinafter referred to as the SIM card) of the Global System for Mobile Communications (hereinafter referred to as GSM) using Universal Mobile Communication System Terrestrial Wireless Access (hereinafter referred to as UMTS, also known as Wideband Code Division Multiple Access, hereinafter referred to as WCDMA) When a terminal or a GSM and WCDMA dual-mode terminal uses a WCDMA system, a method and a device for realizing terminal authentication network. Background technique [0002] In the current GSM or general packet radio service (hereinafter referred to as GPRS) system, for each user, the user is stored in the home location register (hereinafter referred to as HLR) or authentication center (hereinafter referred to as AUC) and the SIM card of the user respectively. The root key (indicated by Ki below) and two authentication encryption algorithms (indicated by A3 and A8 below). The au...

AI Technical Summary

Problems solved by technology

However, since the 2G SIM card used is only A3 in the 2G system, the A8 algorithm can only perform calculations related to triplets in 2G, and there is no f1-f5 function in the WCDMA system, nor can it perform quintuple parameter correlation. calculation

Therefore, it can still only realize the network authentication terminal, but cannot provide the function of terminal authentication network, that is, it can only provide the function of one-way authentication

[0021] That is to say, when the SIM card uses a WCDMA terminal or a GSM / WCDMA dual-mode terminal and a WCDMA network, there is a function that cannot provide the terminal authentication network

In this way, there is still a security hole to be attacked by a fake base station

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