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BEST: Battery, Efficiency and Stability based Trust mechanism using Enhanced AODV for mitigation of Blackhole Attack and its Variants in MANETs
Nitin Khanna and Monika Sachdeva
This paper attempts to resolve the issue of mitigation of blackhole attack and its variants by presenting a battery, efficiency and stability based trust mechanism that performs both prevention and detection of packet drop attacks followed by isolation using the process of dissemination of information validated by the fair nodes. The proposed work operates in two modes to combat both single as well as co-operative form of attack. In standard mode, the promiscuous facility and trust update lead to detection of attack while in advance mode a set of trusted trace packets and procedures detect co-operative attacking nodes thus break the co-operation among malicious nodes. After detection of malicious nodes, dissemination process leads to isolation of the attacking node and validation is performed to avoid bad mouthing attack. The work is compared with several published mechanisms against parameters like PDR, normalized control load, accuracy in detection and residual energy.
Keywords: MANET, Trust Algorithm, Energy Model, Blackhole, Grayhole, Co-operative Attack