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Wireless mesh network system and method for key distribution

A wireless mesh network, mesh network technology, applied in the application field of Mesh network, can solve problems such as inability to communicate

Inactive Publication Date: 2010-01-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a wireless mesh network system, which is used to solve the problem of inability to communicate when deploying multiple MKD logical entities

Method used

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  • Wireless mesh network system and method for key distribution
  • Wireless mesh network system and method for key distribution
  • Wireless mesh network system and method for key distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] see Figure 9 It is a flowchart of key distribution between MP nodes after successful authentication in the embodiment of the present invention, including:

[0163] Step 61: Two authenticated MP nodes perform link establishment and key negotiation;

[0164] Step 62: When the key distribution domains MKDD-ID to which the two authenticated MP nodes belong are different, the key distribution cannot be performed; otherwise, the authenticated MP nodes negotiate to use the session master key PMK of one of the MP nodes , another MP node initiates a key distribution request to the MPP or AC to obtain the session master key PMK;

[0165] Step 63: The two authenticated MP nodes perform a four-way handshake according to the session master key PMK through a four-way handshake protocol, and negotiate to establish a temporary session key PTK.

[0166] Where, PTK=PRF-length(PMK, PTKSNonce, PTKANonce, MA-ID, MP-ID, PMK-MAName);

[0167] Among them, before key distribution between MP...

Embodiment 2

[0194] Key distribution is performed between two successfully authenticated MP nodes. According to the idea of ​​the ticket, when each authenticated MP node requests key distribution, it distributes a ticket to it through AC or MPP using its authenticated authorization information. , each MP performs two-way authentication through the ticket and negotiates to establish a temporary session key. Among them, the key distribution entity AC or MPP has a pseudo-random number generator to generate a key, and provides a session master key for the peer-to-peer two MPs. The specific process is divided into two cases.

[0195] When it is the Local mode, the process of key distribution of the successfully authenticated MP nodes (assumed to be MP1 and MP2) in the embodiment of the present invention includes:

[0196] Step 71: MP2-->MPP: {Replay counter||MP1A||MP2A||MP1-ID||MP2-ID||Nonce1||Nonce2 MKDD-ID||}

[0197] MP2 initiates a key distribution request to MPP, and the key distribution...

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Abstract

The invention discloses a method, a device and a system for the authentication and key distribution of a wireless mesh network. The authentication method mainly comprises the following steps that: MPP (Mesh portal point) equipment receives an authentication request sent by an MP (Mesh point) initially accessing the network; the MPP equipment forwards the authentication request to AC equipment and the AC equipment sends the MP authentication information in the authentication request to an authentication server; and the AC equipment receives MP authentication result fed back by the authentication server and forwards the authentication result to the MPP equipment, and the MPP equipment transmits the authentication result to the MP. The invention provides a manageable and operable safe framework of the Mesh network, and provides an effective authentication and key distribution method to effectively establish associated links between MPs to ensure the safe transmission of link layer data.

Description

technical field [0001] The invention relates to the application field of Mesh (wireless mesh) network, in particular to a wireless mesh network system and a key distribution method. Background technique [0002] A security mechanism of a Mesh network in the prior art uses a pre-shared key or an upper-layer authentication method to generate a master key, and the master key provides a top-layer key for derivation of a lower-layer key. A two-level key layer of key distribution and key transmission is established between each MP (Mesh point, Mesh node) and MKD (Mesh key distribution, Mesh key distribution), and MKD performs calculation sessions based on the key distribution level key Master key, and distribute the session master key for each MP pair through the key transport level key. The specific processing process of the security association of links between MP nodes in this security mechanism is as follows: [0003] The newly joined MP first detects the available authentic...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L29/06
Inventor 李雪莲辛阳樊唱东周元杨亚涛
Owner HUAWEI TECH CO LTD
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