Trust-distrust protocol for the secure routing in wireless sensor networks

Now a days usage of Wireless Sensor Networks (WSNs) is increasing, because of its wide application. Unlike common networks the WSNs have the capability of reconfiguration, whenever any defect occurs in the network. However, while routing in these network the loss of data is occurring due to its security lack. Hence many researchers have presented their research for providing secure routing in WSNs. The security is still an issue in routing of WSNs. In this paper, we have developed a novel protocol for the secure routing of WSNs, and named as Trust-Distrust Protocol (TDP). The proposed protocol has four stages, initial stage is topology management, where an improved k-means algorithm is applied. Then the second stage is Link Quality Appraisal, which means fitness evaluation of every nodes in the network. The third stage is Grading, in which based on the fitness value a grade point is allotted to every node. In the last stage the secure path for the routing is determined based on grade point. The proposed TDP is tested in NS2 and the performance is compared with the existing LEACH protocol. Ultimately the proposed protocol outperform the performance of the existing routing protocol.