A Traffic-Aware Key Management
Architecture for Reducing Energy Consumption
in Wireless Sensor Networks
International Journal on Network Security, 1 (2):
8 (July 2010)Abstract
In Wireless Sensor Networks (WSNs), most
of the existing key management schemes, establish shared
keys for all pairs of neighbor sensor nodes without
considering the communication between these nodes.
When the number of sensor nodes in WSNs is increased
then each sensor node is to be loaded with bulky amount
of keys. In WSNs a sensor node may communicate with a
small set of neighbor sensor nodes. Based on this fact, in
this paper, an energy efficient Traffic-Aware Key
Management (TKM) scheme is developed for WSNs,
which only establishes shared keys for active sensors
which participate in direct communication. The proposed
scheme offers an efficient Re-keying mechanism to
broadcast keys without the need for retransmission or
acknowledgements. Numerical results show that proposed
key management scheme achieves high connectivity. In
the simulation experiments, the proposed key
management scheme is applied for different routing
protocols. The performance evaluation shows that
proposed scheme gives stronger resilence, low energy
consumption and lesser end to end delay.