Secure and Trustable Routing in WSN for End to End Communication

In WSNs, end-to-end data communication security is required to combine data from source to destination. Combined data are transmitted in a path exist of connected links. All previous end to end routing protocols propose solutions in which each n every link uses a pair wise shared key to protect data. In this paper, we propose a novel design of secure end to end data communication. We give a newly published group key pre distribution scheme in this design, such that there is a unique group key, called path key, to protect data transmitted in the whole routing path. Specifically, instead of using several pair wise shared keys to repeatedly perform encryption and decryption over every link, our proposed scheme uses a unique source to destination path key to protect data transmitted over the path. Our proposed protocol can authenticate sensors to establish the path and to establish the path key. The main advantage using our protocol is to reduce the time needed to process data by middle sensors. Moreover, our proposed authentication scheme has complexity O(n), where n is the number of sensors in a communication path, which is several from all authentication schemes till now, which are one-to-one authentications with complexity O(n2). The security of the protocol is computationally secure. Active Trust can importantly improve the data route success probability and ability opposite black hole attacks and can optimize network lifetime.