Key Pre-distribution in Wireless Sensor Networks Using Key Groups

Abstract

Prior results on the key pre-distribution in wireless sensor networks often employ the deployment knowledge of the sensor nodes to construct a better communication graph. This paper proposes the use of key groups in random key pre-distribution. Three different approaches are discussed for key selection and experiments are conducted to compare the effectiveness with prior proposed schemes. Through the simulation results, we see that with the help of key groups, a smaller number of keys can be preloaded in the sensor nodes to achieve the same level of robustness of the network.