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Key management method of wireless sensor network

A wireless sensor and network key technology, applied in the field of key management, wireless sensor network key management of wireless sensor networks, can solve the problems of limited node energy and heavy burden on wireless sensor network nodes.

Inactive Publication Date: 2013-04-17
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Wireless sensor network is a distributed wireless network. After deployment, nodes rely on cooperative work to complete tasks. There is no global public key infrastructure PKI. Secondly, in wireless sensor networks, node energy is limited, and asymmetric key systems are widely used. Exponential arithmetic, overburdened for wireless sensor network nodes

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  • Key management method of wireless sensor network
  • Key management method of wireless sensor network
  • Key management method of wireless sensor network

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Embodiment Construction

[0033] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0034] Such as figure 1 , figure 2 , image 3 As shown, the wireless sensor network of the present invention includes three types of nodes: base station, cluster head node and sensor node, and each node has a unique identity number id n .

[0035] In the present invention, the wireless sensor network includes a base station, a small number of cluster head nodes and a large number of sensor nodes; the base station is the management center of the entire network, a data convergence center, and a gateway connecting the wireless sensor network with other networks; The cluster head node divides the network into sub-clusters, provides data forwarding, and aggregates the data to the base station; the sensor node monitors the area where it is located...

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Abstract

The invention aims to disclose a key management method of a wireless sensor network, supporting the network expansion and the dynamic node movement. When a new sensor node or a cluster node is added to the network, the newly added node can acquire self pair keys and a cluster key to be added to a cluster. When the node moves out of a cluster head node communication range and enters another cluster head node communication range, a new cluster head distributes new pair keys and distributes the cluster keys of the cluster for the sensor node by adopting the same mode. The method has low requirements for node storage resources, the sensor node only needs to prestore one initial key, and the cluster head node stores two keys. The invention improves the safety performance of the network and realizes the aim because when x sensor nodes in the network are captured, the breakthrough probability of other links in the network is only 1-(1-1 / 215)*x.

Description

technical field [0001] The invention relates to a key management method, in particular to a wireless network information security field, which is applied to the wireless sensor network key management method of the wireless sensor network. Background technique [0002] With the advancement of wireless communication technology, microchip manufacturing and other technologies, wireless sensor networks (WSN) have been widely used in important military and commercial fields such as target tracking, patient monitoring, and environmental monitoring. [0003] Like traditional computer communication networks, wireless sensor networks also have various security threats. The broadcast characteristics of wireless channels and self-organizing networking characteristics make wireless sensor networks vulnerable to passive and active attacks by attackers. Common attacks include message monitoring, tampering, forgery and blocking. [0004] At the same time, wireless sensor networks have thei...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/04H04W84/18H04W12/041H04W12/0431H04W12/0433
Inventor 黄杰欧国华郭弘黄道丽金波
Owner SOUTHEAST UNIV