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Grouping cluster and master key based key management method

A key management and master key technology, applied in the field of wireless sensor networks, to achieve the effect of reducing the number, reducing energy consumption and ensuring security

Active Publication Date: 2014-05-21
NORTHEASTERN UNIV
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  • Claims
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Problems solved by technology

But when the nodes are encrypted with the group key or the cluster key, the part of the network affected by a single point of failure will expand to a cluster

Method used

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  • Grouping cluster and master key based key management method
  • Grouping cluster and master key based key management method
  • Grouping cluster and master key based key management method

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Embodiment Construction

[0048] The specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] This embodiment adopts the key management method based on intra-cluster grouping and master key. The general idea is as follows: In a wireless sensor network, the basic idea of ​​clustering is more suitable for practical applications. On the basis of clustering, this embodiment introduces the idea of ​​intra-cluster grouping for key management. That is, all nodes in the group directly transmit data to the cluster head node, so as not to change the communication mode of the network. On the basis of intra-cluster grouping, the idea of ​​master key is introduced to participate in key generation, distribution, and update. In this embodiment, it is set that each group in the cluster contains no more than m nodes, and all nodes including the cluster head in each group share a group key. The network structure is as follows figure 1 shown....

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Abstract

The invention relates to a grouping cluster and master key based key management method and relates to the technical field of a wireless sensor network (WSN). According to the grouping cluster and master key based key management method, the WSN needs secure channels during a communication key transmission process, so that an elliptic curve encryption method is used; a master key is used for encrypting and distributing group keys, and the group keys are used for encrypting data, so that data transmission channels are separated from key transmission channels, and key distribution security is guaranteed; by means of difficulties in solving a discrete logarithm problem on an elliptic curve, group key distribution confidentiality is guaranteed; by means of a grouping cluster network structure, a large-scale network is partitioned into small logic cluster groups, and each group shares one group key so as to reduce stored keys; a key distribution method is improved on the basis of clustering and in combination with the idea of master key management, and network work efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a key management method based on intra-cluster grouping and master key. Background technique [0002] The current key management method mainly uses a single key or key server to provide the security of the entire network, that is, the management method based on the master key. It focuses on considering the energy consumption and storage requirements of WSN (Wireless Sensor Networks, wireless sensor network), and its implementation is relatively simple. In this key management method, the whole network shares a key, through which the verification is realized and the node pair keys are negotiated. Nodes in the network use only one master key to encrypt data keys. The management method based on the master key can meet the requirements for basic network security applications; since the entire network nodes all depend on the master key, a single point of failure will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04
Inventor 张石佘黎煌刘金王明全鲍喜荣黄月
Owner NORTHEASTERN UNIV
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