25-08-2017, 09:32 PM
Symmetric Key Cryptography Based Secure Routing In Wireless Sensor Networks
ABSTRACT:
The verity of real-world problems can be solved at low cost through wireless sensor networks. Low cost tiny devices having limited storage, computational capability and power are known as Sensors. They can be deployed in large scale for performing both military and civilian tasks in that case security will be one of the main concerned. As sensors have limited power and computational capability, any security mechanism for sensor network must be energy efficient and should not be computational intensive.
Many sensor network routing protocols have been proposed, but none of them have been designed with security as a goal. Paper proposes security goals for routing in sensor networks. In this paper, an energy-efficient secure routing proposes for wireless networks based on symmetric key cryptography. The proposed crypto system is session based and the session key is changed after expire of each session. Paper divides the network into number of clusters and selects a cluster head within each cluster. Communication between sensor and the sink takes place at the three level; sensor→ cluster head→ sink. Encryption of the sensed data is transmitted to the cluster head, which aggregated the data received from the sensor nodes of its cluster before forwarding to the next cluster head on the path or to the sink . Sensors do not participate in the routing scheme; their energy is conserved at each sensor node.