Improvement of Watermarking-LEACH Algorithm Based on Trust for Wireless Sensor Networks

Wireless sensor networks (WSNs) consists of a large number of sensor nodes to monitor physical or environmental conditions. Each sensor node has specific tasks to do with its neighbours. On the other hand, if node does not perform it, it is considered as misbehaviour node and often interrupt the normal functionality of a WSN. In order to keep functional WSNs, it is necessary to identify the misbehaviour of the node, which will save the network from internal attacks. So, an effective security mechanism is essential. The work presented in this paper is concerned with introduced trust management based Watermarking-LEACH to prevent at the same time internal and external attacks. This leads to introduce a new trust model into Watermarking-LEACH schema to infer the total trust and security with the energy-efficiency. To this end, the implementation and simulation of T-W-LEACH approach is done with the MATLAB tool simulator and the evaluation of security and energy is made to perform a comparative with TBE- LEACH a Trust based energy efficient routing in LEACH for wireless sensor networks.