Security for Wireless Sensor Network

Security of wireless sensor networks plays an essential role in the application they used. Due to resource limitations of sensor node, such as energy supply and memory size, pairwise keys establishment between nodes are considered a difficult problem. This paper proposes a simple shared key discovery between sensor nodes in very clear steps. The authentication protocol provides both message and entity authentication. The work assumes dynamic wireless sensor network with flat structure. The performance of the proposed protocol will be shown in terms of message size, energy cost, and security requirements achieved.