Secure Ad hoc On-demand Distance Vector Routing Protocol for WirelessSensor Networks Data Transmission

In the wireless sensor network (WSN), secure communication between nodes is a very difficult task due to its nature and characteristics. In this paper, a symmetric key cryptography technique based on the OpenSSL library to secure an ad hoc on-demand distance vector (AODV) routing protocol for WSN data transmission between nodes is proposed. This method provides security both in the route discovery processes and data transmission over the network by using two types of key. The first key is a common shared secret key, which is used to authenticate nodes during Route Request (RREQ) and Route Replay (RREP) packet transmission. The second key is the session key, which is known only by two communicating nodes to exchange data. Therefore, this paper investigates security in terms of availability, confidentiality, integrity, and authenticity of the network. The experiment was performed using the NS2.35 simulator by varying the number of nodes to 10, 20, 30, 40, and 50. Therefore, the performance of our proposed AODV routing protocol was more promising in terms of average throughput, packet delivery ratio, and normalized routing overhead than the previously proposed security-enhanced AODV routing protocol.