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Title: | SECURING MULTI-CHANNEL WIRELESS NETWORKS AGAINST MALICIOUS BEHAVIOR | Authors: | ZHENG CHAODONG | Keywords: | theory, security, distributed algorithms, multi-channel wireless networks, sybil attacks | Issue Date: | 13-May-2015 | Citation: | ZHENG CHAODONG (2015-05-13). SECURING MULTI-CHANNEL WIRELESS NETWORKS AGAINST MALICIOUS BEHAVIOR. ScholarBank@NUS Repository. | Abstract: | The open and shared nature of wireless networks makes them vulnerable to various malicious behavior, one of which is sybil attacks. Sybil attacks refer to the situation in which malicious users dishonestly generate large numbers of fake identities, and inject them into the network to gain unfair advantage over honest users, or to conduct other hostile activity. In this thesis, we propose several randomized algorithms which can effectively thwart sybil attacks in both centralized and ad hoc multi-channel wireless networks. Our key strategy is called radio resource testing. Compare with previous proposals, our approach can provide provable time and correctness guarantees which are expressed with respect to the actual number of users, and does not require additional information. In this thesis, we have also proved several impossibility results which indicate our algorithms are near optimal in terms of correctness. | URI: | http://scholarbank.nus.edu.sg/handle/10635/121117 |
Appears in Collections: | Ph.D Theses (Open) |
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