Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Distributed KDC-Based Random Pairwise Key Establishment in Wireless Sensor Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 808797 14 pages doi 2010 808797 Research Article Distributed KDC-Based Random Pairwise Key Establishment in Wireless Sensor Networks Zhong Su 1 Yixin Jiang 1 Fengyuan Ren 1 Chuang Lin 1 and Xiaowen Chu2 1 Department of Computer Science and Technology Tsinghua University Beijing 100084 China 2 Department of Computer Science Hong Kong Baptist University Hong Kong Correspondence should be addressed to Xiaowen Chu chxw@ Received 2 March 2010 Accepted 1 July 2010 Academic Editor Jiangchuan Liu Copyright 2010 Zhong Su et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Key management is a core mechanism to provide secure and reliable communications in wireless sensor networks WSNs . In large-scale WSNs due to the resource constraint on sensor nodes it is still an extremely challenging task to achieve good performance in terms of high network connectivity and strong resilience against sensor nodes capture with low overheads. To address this issue in this paper we propose a novel random pairwise key establishment scheme called RPKE. In RPKE sensor nodes differentiate their roles as either auxiliary nodes or ordinary nodes prior to network deployment. The auxiliary nodes act as distributed key distribution center KDC and neighboring ordinary nodes can establish pairwise key with the help of the distributed KDC. Theoretical analysis and simulation evaluation demonstrate that RPKE performs well in terms of network connectivity and resilience at the cost of low computation communication storage overheads compared to the existing counterparts. 1. Introduction Wireless Sensor Networks WSNs provide many promising applications such as pollution sensing environment and traffic .
