Secure Data Aggregation in Wireless Sensor Network using Trust Model

Wireless sensor networks usually consist of hundreds or thousands of inexpensive and low-powered sensing devices. In WSN, nodes have low computational power and communication resources to collect data to a specific function. Nodes have limited battery power and s mall data storage. In WSN, Security is an important issue, therefore its need to create a secure transmission model with min imum overheads and transmit the data securely to the Base station. In WSN, sensors are used to collect the data from the environment and pass it on to base station. Data aggregation is a technique to process and analyse the collected data from multip le sensor nodes and send the aggregated information to a base station through single route. Efficient Distributed Trust Model (EDTM) is a trust model fo r wireless sensor network used to provide the trustworthiness for each sensor nodes. The proposed model provides a secure data aggregation technique to avoid malicious node and false data generation during data aggregation in WSN. And also use to improve the average sensor lifetime, to eliminate redundant data transmission from mult iple sensor nodes and to reduce the energy consumption during aggregation process. The simulation has been done in ns2.