Cross Layer Implementation of Key Establishment and Configuration Protocols in WSN
Security in Wireless Sensor Networks (WSN) can be achieved by establishing shared keys among the neighbor sensor nodes to create secure communication links. The protocol to be used for such a pairwise key establishment is a key factor determining the energy to be consumed by each sensor node during the secure network configuration. On the other hand, to achieve the optimum network configuration, nodes may not need to establish pairwise keys with all of their neighbors. Because, links to be established are defined by the network configuration protocol and as long as the network connectivity requirements are satisfied, number of links to be secured can be limited accordingly. In this sense, key establishment and network configuration performances are related to each other and this cross relation should be taken into consideration while implementing security for WSN. In this paper, we have investigated the cross layer relations and performance figures of the selected randomized pre-distribution and public key based key establishment protocols with the configuration protocol we proposed in a separate publication. Simulation results indicate that total network configuration energy cost can be reduced by reducing the number of links to be secured without affecting the global network connectivity performance. Results also show that the energy and resilience performances of the public key establishment can be better than the key pre-distribution for a given set of network configuration parameters.
Keywords: Wireless Sensor Networks, Network Configuration, Key Establishment, Cross Layer Implementation, Security, Energy.
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ABOUT THE AUTHORS
Ozgur Saglam
Ozgur Saglam received his B.S. degree from the Electrical and Electronics Engineering Department, 9 Eylül University, Ýzmir, Turkey, in 1998. He then received the M.S. and Ph.D. in International Computer Institute from Ege University, Ýzmir, Turkey, in 2002 and 2009 respectively. Currently he is a project manager of R&D Department at Arcelik A.Þ. Electronics Plant. His research interests include distributed networks, network security and wireless sensor networks.
Mehmet Emin Dalkilic
Mehmet E. DALKILIC received his B.S. degree from the Electrical and Electronics Engineering Department, Hacettepe University, Ankara, Turkey, in 1985. He then received the M.S. and Ph.D. in Computer Engineering from Syracuse University, New York, USA, in 1989 and 1994 respectively. Currently he is a professor of Computer Science at Ege University and director of the International Computer Institute. His research interests include algorithm design, networks and security.
Ozgur Saglam
Ozgur Saglam received his B.S. degree from the Electrical and Electronics Engineering Department, 9 Eylül University, Ýzmir, Turkey, in 1998. He then received the M.S. and Ph.D. in International Computer Institute from Ege University, Ýzmir, Turkey, in 2002 and 2009 respectively. Currently he is a project manager of R&D Department at Arcelik A.Þ. Electronics Plant. His research interests include distributed networks, network security and wireless sensor networks.
Mehmet Emin Dalkilic
Mehmet E. DALKILIC received his B.S. degree from the Electrical and Electronics Engineering Department, Hacettepe University, Ankara, Turkey, in 1985. He then received the M.S. and Ph.D. in Computer Engineering from Syracuse University, New York, USA, in 1989 and 1994 respectively. Currently he is a professor of Computer Science at Ege University and director of the International Computer Institute. His research interests include algorithm design, networks and security.
