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Node group key pre-distribution method and device based on mixed key

A hybrid key and node group technology, applied in key distribution, can solve the problems of high computational load of bilinear operations, unsuitable for deployment and application of lightweight node groups, complex key parameter structure, etc.

Active Publication Date: 2020-10-30
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0015] The key pre-distribution scheme based on bilinear pairing cleverly uses bilinearity to realize dual key generation. In this scheme, the key parameter structure is complex, and the calculation load of bilinear operation is very high, which is not suitable for lightweight node groups. Deploy application in

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  • Node group key pre-distribution method and device based on mixed key
  • Node group key pre-distribution method and device based on mixed key
  • Node group key pre-distribution method and device based on mixed key

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043] The node composition and network topology of the wireless network node group WNG in the present invention: the node group mainly consists of three types of nodes, which are respectively backbone nodes (Backbone node, B-node), information collection nodes (Reconnaissancenode, R-node) and action nodes (Action node, A-node); Network organization and management are carried out in the way of hierarchical heterogeneous nodes and clustering of homogeneous nodes. The backbone nodes form the backbone network of the upper layer, which are used to forward and coordinate the data of the lower nodes, and manage and control the functional tasks of the whole network; the information collection and action nodes form the lower layer of the network, through dynamic clustering, the cluster heads The backbone network communicates, which faci...

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Abstract

The invention discloses a node group key pre-distribution method based on a mixed key in a wireless network node group. The method comprisesa key information presetting step of presetting different types of key information for a backbone node and a common node in the wireless network node group before node deployment of the node group,a pairwise key establishment step of discovering shared key information between neighbor nodes through information interaction between the nodesafter node group deploymentandperforming calculation between common nodes, between backbone nodes, and between the common nodes and the backbone nodes to generate pairwise keys, anda path key establishing step ofif a pairwise key cannot be directly established between adjacent common nodes, generating a path key by utilizing the established security path in a key negotiation mode. The method is suitable for being deployed and applied in different node group networks, and good fault tolerance, expandability and lowexpenditure are achieved under the condition that the safety of a password management scheme is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of node group communication, and relates to a method and device for pre-distributing a node group key based on a mixed key in a wireless network node group. Background technique [0002] Cryptographic services are the basis of information security protocols and technologies, and also play a fundamental role in wireless network group (WNG). The key management of node groups is a key issue in node group security research, and has always been an important content of node group security research. According to different application backgrounds, network scales, network structures, etc., the focus of designing corresponding key management schemes and protocols is also different, which can be roughly divided into the following categories: symmetric and asymmetric key management, distributed and hierarchical Key management, static and dynamic key management, random and deterministic key management. Among them, the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04W12/04H04W12/06
CPCH04L9/0819H04W12/06H04L9/0838H04L9/0869
Inventor 王怀习黄郡单洪马涛张印束妮娜杨方汪明智
Owner NAT UNIV OF DEFENSE TECH
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