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Security protocol based on received signal intensity in wireless sensor network

A technology of receiving signal strength and wireless sensors, which is applied in the field of establishment and dynamic key management, can solve the problems of high encryption and decryption overhead, and achieve the effect of reducing space

Active Publication Date: 2015-01-07
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The longer the key, the better the encryption effect, but the greater the overhead of encryption and decryption

Method used

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  • Security protocol based on received signal intensity in wireless sensor network
  • Security protocol based on received signal intensity in wireless sensor network
  • Security protocol based on received signal intensity in wireless sensor network

Examples

Experimental program
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Embodiment Construction

[0059] In order to solve the security problem in the wireless sensor network, the invention combines the establishment of the security route and the management method of the dynamic key to form an efficient security protocol. In order to realize above-mentioned result, main steps of the present invention are as follows:

[0060] combine figure 1 As shown in the figure, we can know the steps to establish the sink node and hot zone:

[0061] 1) There are N nodes in the unknown area, using the pre-stored key K n Encrypted broadcast, transmission data content has 5 items;

[0062] 2) The format and examples of sending data messages are as follows:

[0063]

[0064] 3) Each node uses the key K n Decrypt the received message, and then use the sink node selection formula to calculate the sink node selection factor θ according to the number of neighbor nodes, received signal strength and its own energy value, if θ is greater than F Th , it will be converted from a normal node ...

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Abstract

The present invention relates to a security protocol based on received signal intensity in a wireless sensor network, specifically to secure routing and key management. According to the number of adjacent nodes, the intensity of received signals and the energy value thereof, a convergent node is selected by a convergent node selection equation. According to the number of the adjacent nodes and the throughput of the convergent node, a hot zone is determined by a hot zone selection equation. By comparing the feature similarity between collected data and pre-stored abnormal data, abnormal data is detected. An inter-node session key is generated dynamically, and according to whether a hot zone is determined, different keys are selected to generate a function. The key and data are encrypted in a manner of combining a public key cipher mechanism and a symmetric cipher mechanism. The security protocol improves flexibility of a key, enhances the rationality for selecting a convergent node and well ensures safe transmission of inter-node data.

Description

technical field [0001] The invention relates to the establishment of a safe route and the management of a dynamic key, and belongs to the technical field of wireless communication. technical background [0002] Wireless sensor network (Wireless Sensor Networks, WSN) is composed of a large number of cheap miniature wireless sensor nodes deployed in the monitoring area, and senses, collects, processes and transmits monitoring data through cooperation. WSNs usually work in harsh environments, with the characteristics of fragile links between nodes and dynamic changes in topology. Therefore, wireless sensor networks are vulnerable to various types of attacks, so it is imperative to establish secure routing and data key management. [0003] The principle of public key cryptography is to separate the encryption key from the decryption key. Keys are generated in pairs, each pair consisting of a public key and a private key. The longer the key, the better the encryption effect, b...

Claims

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Application Information

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IPC IPC(8): H04W12/04H04W40/02H04W84/18H04L29/06
CPCH04L63/062H04L63/1408H04W12/04H04W40/248H04W84/18Y02D30/70
Inventor 李哲涛易昌朱更明王志强
Owner XIANGTAN UNIV
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