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Research on Key Update Scheme in Wireless Sensor Networks

Author: ZhuLingZhi
Tutor: WangJianXin
School: Central South University
Course: Applied Computer Technology
Keywords: Temporary initial key Code fragment Pre-allocated Key Update A one - way hash function
CLC: TP212.9
Type: Master's thesis
Year: 2011
Downloads: 42
Quote: 0
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Abstract


With the advances in wireless sensor technology , low-power electronics and RF technology , wireless sensor networks has become one of the most active emerging multidisciplinary field of research involves a number of cutting-edge scientific theory and advanced technology has great potential for development and important scientific significance . Sensor nodes have limited resources , and the sensor nodes are generally deployed in harsh or hostile environment , easy to be captured by the attacker , and challenging wireless sensor network security issues . A variety of programs or agreements have been proposed so far have their own characteristics , but there are some problems , such as node isolation and pre - allocation of key waste , pre-shared key leak problem neglected or unable to resolve the key update problem . In this paper, the wireless sensor network key update technology security risks exist , rekeying scheme based on the code fragments CSKU ( Code Slice based Key Update Scheme for WSNs ) . CSKU pre-allocated for the sensor node initial key and code snippets between adjacent nodes through the exchange of code snippets same code fragment sets , and then use the code fragment sets the update process is complete key update . Theoretical analysis shows that , CSKU not only safe and high-performance, calculated at the same time , and low communication overhead , and full support for large-scale wireless sensor networks . In order to solve the problem of the initial key the CSKU temporary failure due to leaks in the entire network , the rekey random deployment model in wireless sensor networks , a rekeying scheme RKKU based on random pre-allocated ( random Key predistribution based Key Update scheme for WSNs). RKKU requires random pre-shared key , the code fragment sets and one-way hash function for each node in the deployment . RKKU to find shared key by comparing the key ID information list by means of one-way hash function to compute communication keys between the nodes . Compared with the existing key management scheme , calculation of RKKU and communication load is small , low- key update overhead , high-performance security , suitable for wireless sensor networks . Finally, a summary of your research , and described the idea of further research in wireless sensor networks rekeying scheme .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Sensor applications
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