Authentication method and system of subscriber identity module and terminal

Abstract

The invention provides an authentication method and a system of a subscriber identity module and a terminal. The method comprises the following steps: after judging that an authentication key between self and the terminal is required to be obtained, the subscriber identity module sends key updating request to a key management system platform carrying identifiers of the subscriber identity module and the terminal; after receiving the key updating request, the key management system platform generates a message carrying the authentication key according to the identifier of the terminal and determines a transmission key corresponding to the identifier of the subscriber identity module; the transmission key and transmission encryption and decryption algorithm are used for encrypting the messagecarrying the authentication key and then sending the message to the subscriber identity module; the subscriber identity module uses the prestored transmission key and the transmission encryption anddecryption algorithm to decrypt the message and obtains and stores the authentication key according to the decrypted message; the authentication key is prestored in the terminal, or is obtained according to the decrypted message; the subscriber identity module and the terminal use the authentication key and authentication encryption and decryption algorithm for mutual authentication.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and system for authenticating a user identification module and a terminal. Background technique [0002] With the development of mobile services, operators have greater discounts on the tariffs for the use of terminals and subscriber identification modules used in some services for the purpose of business promotion. It is necessary to restrict users to use bound dedicated terminals and subscriber identification modules. This kind of dedicated subscriber identity module can't be used on the common mobile phone terminal, as the wireless public telephone service requires public telephone terminal and special-purpose USIM (Universal Subscriber Identity Module, Universal Subscriber Identity Module), SIM (Subscriber Identity Module, Subscriber Identity Module), UIM (User Identity Model, user identification module), EVDO UIM card binding use, mobile reader use mobile termi...

AI Technical Summary

Problems solved by technology

[0017] (4) There are many parties who know the key, and it is easy to leak the key, and after the key leak occurs, it is impossible to determine the party responsible for the leak;

[0018] (5) When the patch appears, the operator cannot control which users are legal end users and which users are illegal patch users

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