文章基本信息

标题：A Novel Approach for Preventing Jamming Attacks in Wireless Sensor Networks
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作者：CH Hima Bindu ; G Surekha
期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2013
卷号：4
期号：4
页码：13-16
语种：English
出版社：Ayushmaan Technologies
摘要：Understanding and defending against jamming attacks has long been a problem of interest in wireless communication and radar systems. In wireless ad hoc and sensor networks using multihop communication, the effects of jamming at the physical layer resonate into the higher layer protocols, for example by increasing collisions and contention at the MAC layer, interfering with route discovery at the network layer, increasing latency and impacting rate control at the transport layer, and halting or freezing at the application layer. Adversaries that are aware of higher-layer functionality can leverage any available information to improve the impact or reduce the resource requirement for attack success. For example, jammers can synchronize their attacks with MAC protocol steps, focus attacks in specific geographic locations, or target packets from specific applications. In this work, we address the problem of selective jamming attacks in wireless networks. In these attacks, the adversary is active only for a short period of time, selectively targeting messages of high importance. We illustrate the advantages of selective jamming in terms of network performance degradation and adversary effort by presenting two case studies; a selective attack on TCP and one on routing. We show that selective jamming attacks can be launched by performing real-time packet classification at the physical layer. To mitigate these attacks, we develop three schemes that prevent real-time packet classification by combining cryptographic primitives with physical-layer attributes. We analyse the security of our methods By Adding Public Key Encryption algorithms (e.g., RSA) and evaluate their computational and communication overhead.
关键词：MAC Protocol;Selective Jamming RSA