Authors: Arpan Sen Tanusree Chatterjee Sipra DasBit
Publish Date: 2016/01/16
Volume: 22, Issue: 7, Pages: 2453-2467
Abstract
Nodes in a wireless sensor network WSN are generally deployed in unattended environments making them susceptible to attacks Therefore the need of defending such attacks is of utmost importance The challenge in providing security in this network is that the securing mechanism must be lightweight to make it implementable for such resourceconstrained nodes A robust security solution for such networks must facilitate authentication of sensor nodes So far only data authentication has drawn much attention from the research community In this paper a digital watermark based lowoverhead solution LoWaNA is proposed for node authentication The proposed watermarking technique consists of three modules viz watermark generation embedding and detection The robustness of the algorithm is measured in terms of cracking probability and cracking time This robustness analysis helps us to set the design guideline regarding size of watermark Performance of the scheme is analyzed in terms of storage computation and communication overhead The analytical results are compared with two of the existing schemes and that show significant reduction of all such overheads Thus it proves the suitability of the proposed scheme for resourceconstrained networks like WSN Finally the entire scheme is simulated in Cooja the Contiki network simulator to make it readily implementable in real life mote eg MICAz
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