Authentication algorithm selection method and device

Abstract

The invention relates to the field of communication, in particular to an authentication algorithm selection method and device. The invention used for solving the negotiation problem of an authentication algorithm and ensures UE smoothly passes the authentication service and gets access to network. The method comprises the following steps of: enabling an AUSF to obtain a first authentication algorithm set used by the UE; and extracting a first intersection of the first authentication algorithm set and a second authentication algorithm set which is locally supported to be used, sending the firstintersection to the UDM, triggering the UDM to select a target authentication algorithm used by the UE based on the first intersection and a second intersection of the third authentication algorithmset. Thus, when the authentication algorithm supported by the UE is not completely the same as the authentication algorithm selected by the UDM, the UDM selects the authentication algorithm. Accordingto the embodiment of the invention, the proper target authentication algorithm can be selected through negotiation between the UE and the UDM, the problem of authentication failure easily caused under the condition that the UE changes the ME or the ME supports multiple authentication algorithms is effectively solved, the selection of the authentication algorithms is enriched, and the UE is ensured to 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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