Secured Data Aggregation in Wireless Sensor Network

Abstract

Wireless Sensor Network (WSN) is a variant of Mobile Adhoc NETwork(MANET) that exhibits strict energy-constraints. Recent advances in WSN have lead to promising ap- plications viz. habitat monitoring and target tracking. These applications are based on monitoring/analysis of data received by various sensor nodes. However, data communica- tion between nodes consumes a major portion of the total energy consumption of the WSN. Consequently, data aggregation techniques can efficiently reduce the energy consumption by eliminating redundant data traveling back to the base station. The project aims to identify an energy efficient data aggregation protocol. Among various data aggregation techniques LEACH routing protocol has been selected which is a cluster based approach. The security issues such as data integrity, con dentiality, and freshness in this data aggregation become crucial when the WSN is deployed in a remote or hostile environment where sensors are prone to node failures and compromises. Implementation of security on NS-2 is necessary in network simulation. However, currently, NS-2 does not support these features. Our project aims to solve this issue. The purpose of the project is to nd a way to add encryption/decryption features into network simulation program NS-2. For the purposes of this analysis, the assumption is that the key is pre-shared and the encryption/decryption algorithm is illustrative. Based on the experimental results, AES algorithm is selected to encrypt and decrypt algorithms. Finally, integration of LEACH protocol with AES encryption/decryption algorithm has been done to provide secured data aggregation in WSN which facilitates more energy efficiency.