An Approach against Vampire Attack for Successful Transmission in Wireless Sensor Network

In wireless sensor network, various factors of sensor node are used for ensured delivery of packets like battery or energy, node's status, neighboring nodes etc. which are essential for successful transmission between source and destination as well as among the intermediate nodes. Open communication and lack of energy make networks vulnerable to several security attacks. During data transmission, data packets move from source to destination through many intermediate nodes that may not be trusted. In this paper, a probabilistic approach is proposed to calculate the trust of the nodes. A constant factor of energy is needed to transfer the packet from one node to another. Trust value and estimated energy consumption at every node is determined. If the calculated energy consumption of a node when compared with divided constant factor of energy using fuzzy logic is said to be the trusted node. If energy consumption matches with the estimated energy value approximately then delivery of data packet is assumed successful otherwise it is considered as Vampire Node. In this paper, an algorithm is proposed to detect Vampire Attack to save the network from extra consumption of energy consumed by a particular node. The performance of the proposed algorithm is measured and compared using various parameters such as energy and traffic load.