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Method, device and system for negotiating algorithm

An algorithm and algorithm selection technology, which is applied to security devices, transmission systems, and key distribution, and can solve problems that are difficult to satisfy with a variety of key derivation algorithms.

Active Publication Date: 2011-06-01
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: with the upgrade of HSS and UE, HSS and UE produced by different manufacturers may support multiple more secure derivation K ASME However, in the prior art, K ​​is deduced between UE and HSS ASME The algorithm is the default, so it is difficult to meet the needs of supporting multiple key derivation algorithms

Method used

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  • Method, device and system for negotiating algorithm
  • Method, device and system for negotiating algorithm

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] An embodiment of the present invention provides a method for algorithm negotiation, which specifically includes:

[0025] Step a, the network side obtains the key K supported by the user equipment for derivation ASME algorithm information;

[0026] Step b. Select an algorithm according to the information of the algorithm supported by the user equipment and the home client server HSS;

[0027] Step c, use the selected algorithm as the key K for derivation between the user equipment and the HSS ASME algorithm.

[0028] The embodiment of the present invention provides a method for algorithm negotiation, such as figure 1 Shown:

[0029] In step 101, the HSS acquires information about algorithms supported by the user equipment;

[0030] ...

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Abstract

The embodiment of the present invention discloses a method for negotiating an algorithm. According to the method, a network side acquires information which can be supported by user equipment (UE) and used for deducing the algorithm of a key KASME; the algorithm is selected according to the information which can be supported by the UE and an attributive client server (HSS); and the selected algorithm is used as the algorithm for deducing the key KASME between the UE and the HSS, thereby realizing the negotiation of the key deducing algorithm between the HSS and the UE. The invention also discloses a device and a system for negotiating an algorithm.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method, device and system for algorithm negotiation. Background technique [0002] 3GPP (Third Generation Partnership Project) defines a third-generation wireless communication network technology standard UMTS (Universal Mobile Telecommunications System Universal Mobile Telecommunications System). In order to ensure the competitiveness of 3GPP in the future, currently in 3GPP, various manufacturers are actively researching EPS (Evolved Packet System). [0003] In the key architecture of the EPS network, the USIM (UMTS Subscriber Identity Module UMTS user identification card) and the AuC (Authentication Center) on the network side share the key K; based on the shared key K, the USIM and AuC derive the key CK and IK; AuC sends CK and IK to HSS (Home Subscriber Server belongs to client server). UE (User Equipment) and HSS deduce K based on CK and IK ASME . K is dedu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04W12/02H04L29/06
CPCH04L63/06H04L63/205
Inventor 陈璟庄小君杨艳梅张爱琴
Owner HUAWEI TECH CO LTD
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