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학술지 SAEP: Secure, Accurate and Energy-Efficient Time Synchronization Protocol in WSNs
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저자
김경태
발행일
201106
출처
IEICE Transactions on Communications, v.E94.B no.6, pp.1587-1597
ISSN
0916-8516
출판사
일본, 전자정보통신학회 (IEICE)
DOI
https://dx.doi.org/10.1587/transcom.E94.B.1587
협약과제
10MS3900, 고신뢰 자율제어 SW를 위한 CPS(Cyber Physical Systems)핵심기술 개발, 박승민
초록
Existing time synchronization schemes in sensor networks were all developed to be energy-efficient, precise, and robust, but none of them were developed with security in mind. We have developed a secure, accurate and energy-efficient time synchronization protocol (SAEP). SAEP achieves accurate time synchronization service with significantly reducing the number of message exchanges. Also, it safeguards against Byzantine failure, in which nodes drop, modify, or delay time information in an attempt to disrupt the time synchronization service in multi-hop networks. SAEP takes a distributed approach where each sensor independently makes decisions based only on the information collected from multiple adjacent nodes, thus achieving a high level of resistance to various attacks while minimizing the energy cost. We investigate the misbehavior of a maliciously compromised node and analyze how SAEP can combat these attacks. In our experiment SAEP outperforms the existing time synchronization protocol in accuracy, energy consumption and it is even resilient to multiple capture attacks. Copyright © 2011 The Institute of Electronics, Information and Communication Engineers.
키워드
Byzantine failure, Security, Time synchronization, Wireless sensor network
KSP 제안 키워드
Capture attacks, Compromised nodes, Delay Time, Distributed approach, Energy-efficient time synchronization, Information and communication, Synchronization Protocol, Time information, Wireless sensor networks(WSNs), byzantine failure, energy consumption