An Efficient Secure Data Aggregation Strategy in Wireless Sensor Network using MAC Authentication

In recent years, the wireless sensor networks (WSN) attract increasing attention due to its bright application prospect in both military and civil fields. However, for the WSN is extremely energy limited, the traditional network routing protocols are not suitable to it. Energy conservation becomes a crucial problem in WSN routing protocol. Data aggregation is the most commonly used approach for extending the lifetime of the wireless sensor networks (WSNs). we propose a secure data aggregation based on MAC Authentication scheme that provide efficient secure data integrity and privacy with better energy efficiency and security and to avoid data loss initially network is separated into different clusters each cluster is headed by an aggregator (Cluster Head) and directly connected to sink through other CH. The methodology uses an algorithm for finding the cluster head on the basis of threshold value.The protocol uses a Homomorphic Encryption with secure hash Function algorithm for encryption and for calculating the hash value to maintain the integrity.