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Defending DSSS-based Broadcast Communication against Insider Jammers via Delayed Seed-Disclosure

By An Liu, Peng Ning, Huaiyu Dai, Yao Liu and Cliff Wang

Abstract

Spread spectrum techniques such as Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping (FH) have been commonly used for anti-jamming wireless communication. However, traditional spread spectrum techniques require that sender and receivers share a common secret in order to agree upon, for example, a common hopping sequence (in FH) or a common spreading code sequence (in DSSS). Such a requirement prevents these techniques from being effective for anti-jamming broadcast communication, where a jammer may learn the key from a compromised receiver and then disrupt the wireless communication. In this paper, we develop a novel Delayed Seed-Disclosure DSSS (DSD-DSSS) scheme for efficient anti-jamming broadcast communication. DSD-DSSS achieves its anti-jamming capability through randomly generating the spreading code sequence for each message using a random seed and delaying the disclosure of the seed at the end of the message. We also develop an effective protection mechanism for seed disclosure using content-based code subset selection. DSD-DSSS is superior to all previous attempts for anti-jamming spread spectrum broadcast communication without shared keys. In particular, even if a jammer possesses real-time online analysis capability to launch reactive jamming attacks, DSD-DSSS can still defeat the jamming attacks with a very high probability. We evaluate DSD-DSSS through both theoretical analysis and a prototype implementation based on GNU Radio; our evaluation results demonstrate that DSD-DSSS is practical and have superior security properties

Year: 2010
OAI identifier: oai:CiteSeerX.psu:10.1.1.185.3029
Provided by: CiteSeerX
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