Bridge-type-based wireless sensing network key management scheme

A key management and scheme technology, applied in the field of network communication security, can solve the problems of lack of flexibility, high calculation and communication overhead, etc.

Active Publication Date: 2014-04-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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Problems solved by technology

But its shortcomings are also obvious: on the one hand, it lacks flexibility in application, and on the othe...

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  • Bridge-type-based wireless sensing network key management scheme
  • Bridge-type-based wireless sensing network key management scheme
  • Bridge-type-based wireless sensing network key management scheme

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Embodiment Construction

[0136] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0137] In this embodiment, the system is composed of multiple clusters and a base station, and each cluster is independent and autonomous, such as Figure 8 shown. Each cluster is composed of a cluster head node and multiple sensor nodes. The cluster head node is responsible for receiving the information transmitted from the sensor nodes and forwarding the information to the base station. The sensor nodes are responsible for collecting and collecting information, and transmitting the information to the cluster head nodes. The base station is responsible for receiving the information transmitted from the cluster head node and forwarding it to the client.

[0138] In the wireless sensor network, each cluster is mutually independent and has the same mode, so the present invention uses the key management of a cluster as an example to exp...

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Abstract

The invention relates to a bridge-type-based wireless sensing network key management scheme. The bridge-type-based wireless sensing network key management scheme includes the following steps that firstly, key pre-allocation is carried out, and namely allocation information is preset onto each sensor node by a starting server before node deployment; secondly, in the clustering phase, after cluster head nodes are selected, the clustering phase begins immediately, and each sensor node is added to the corresponding nearest cluster in the clustering process; thirdly, in the neighbor node discovery phase, whether other nodes are to be recorded as neighbor nodes or not is determined by each sensor according to the included angle calculation formula; fourthly, intra-cluster matched keys are built, wherein matched keys between each sensor node and other neighbor nodes are worked out through the bridge type; fifthly, inter-cluster matched keys are built, wherein matched keys between each cluster head node and other cluster head nodes are worked out through symmetric bivariate polynomials. By means of the scheme, on the premise that a certain connection rate is guaranteed, information transfer safety and effectiveness can be guaranteed, and the memory space of a memory is well saved.

Description

technical field [0001] The invention relates to a network key negotiation method, in particular to a bridge-based wireless sensor network key management method, which belongs to the field of network communication security. Background technique [0002] Wireless Sensor Networks (Wireless Sensor Networks: abbreviated as WSN, hereinafter collectively referred to as wireless sensor network) is a wireless network composed of numerous miniature sensor nodes in an autonomous networking manner. The wireless sensor network integrates sensor technology, network technology, micro-electromechanical technology, embedded system technology and wireless communication technology, etc., and can collaboratively perceive, collect and process information of various environments or monitoring objects in the distributed area in real time, and through The wireless network transmits to the base station. The inherent characteristics of sensor nodes determine that wireless sensor networks have the fo...

Claims

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Application Information

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IPC IPC(8): H04W12/04H04W12/0431
Inventor 郑军赵芳芳郭先臣徐三春
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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