tailieunhanh - Báo cáo hóa học: "Research Article A Secure Localization Approach against Wormhole Attacks Using Distance Consistency"

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 A Secure Localization Approach against Wormhole Attacks Using Distance Consistency | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 627039 11 pages doi 2010 627039 Research Article A Secure Localization Approach against Wormhole Attacks Using Distance Consistency Honglong Chen 1 2 Wei Lou 2 Xice Sun 1 2 and Zhi Wang1 1 State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou Zhejiang 310027 China 2 Department of Computing The Hong Kong Polytechnic University Kowloon HongKong Correspondence should be addressed to Zhi Wang wangzhizju@ Received 1 September 2009 Accepted 21 September 2009 Academic Editor Benyuan Liu Copyright 2010 Honglong Chen 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. Wormhole attacks can negatively affect the localization in wireless sensor networks. A typical wormhole attack can be launched by two colluding attackers one of which sniffs packets at one point in the network and tunnels them through a wired or wireless link to another point and the other relays them within its vicinity. In this paper we investigate the impact of the wormhole attack on the localization and propose a novel distance-consistency-based secure localization scheme against wormhole attacks which includes three phases of wormhole attack detection valid locators identification and self-localization. The theoretical model is further formulated to analyze the proposed secure localization scheme. The simulation results validate the theoretical results and also demonstrate the effectiveness of our proposed scheme. 1. Introduction Wireless sensor networks WSNs 1 consist of a large amount of sensor nodes which cooperate among themselves by wireless communications to solve problems in fields such as emergency response systems military field operations and environment monitoring systems. .