A method and device for selecting an authentication algorithm

Abstract

The invention relates to the communication field, in particular to a method and device for selecting an authentication algorithm. It is used to solve the negotiation problem of the authentication algorithm and ensure that the UE successfully passes the authentication service and successfully accesses the network. Support the first intersection of the second set of authentication algorithms used, and send the first intersection to the UDM, triggering the UDM to select the second set of authentication algorithms used by the UE based on the first intersection and the second intersection of the third set of authentication algorithms Target authentication algorithm. In this way, when the authentication algorithm supported by the UE is not exactly the same as the authentication algorithm selected by the UDM, the appropriate target authentication algorithm can be selected through negotiation between the UE and the UDM, which effectively solves the problem that the UE replaces the ME or the ME supports multiple authentication methods. In the case of the authentication algorithm, it is easy to cause authentication failure, which enriches the selection of authentication algorithms and ensures that the UE can successfully access the network.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for selecting an authentication algorithm. Background technique [0002] With the rapid development of mobile communication technology, a variety of authentication algorithms are defined in the fifth generation mobile communication system (Fifth Generation, 5G) next generation core network (Next Generation Core, NGC), for example, the third generation partnership project ( The Third Generation Partnership Project (3GPP) standard stipulates that the authentication methods that must be supported include the improved Extensible Authentication Protocol Method for 3rd Generation Authentication and Key Agreement (EAP-AKA') and 5G-Authentication and Key Agreement (5G-Authentication and Key Agreement, 5G-AKA) 5G-AKA. Various other methods, such as Extensible Authentication Protocol Method for Subscriber Identity Module (EAP-SIM), Extensible Authentication Protocol Method fo...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method and device for selecting an authentication algorithm to solve the problem of authentication algorithm coordination and ensure that user equipment successfully accesses the network

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