K. M. Sunjiv Soyjaudah

M. Razvi Doomun, K. M. Sunjiv Soyjaudah

In wireless ad hoc networks, protecting source and destination nodes location privacy is a challenging task due to malicious traffic analysis and privacy attacks. Existing solutions, such as incorporating fake source destination pairs in the network, provide some privacy of real source and destination nodes against attackers. Moreover, ad hoc networks need stronger privacy protection against powerful global attacker which has knowledge of overall network topology and, that can also eavesdrop and visualize network wide data transmissions. In this paper, we present a novel privacy technique, (EXTROUT) Route Extrapolation to camouflage the real source and destination nodes along an extended path in an ad hoc network. We demonstrate that the privacy level achieved with EXTROUT is higher and more effective against a global attacker, when compared to fake source destination nodes privacy scheme.

M. Razvi Doomun, K. M. Sunjiv Soyjaudah

Temporal Key Integrity Protocol (TKIP) is a provisional solution for Wired Equivalent Privacy (WEP) security loopholes present in already widely deployed legacy 802.11 wireless devices. In this work, we model and analyse the computational complexity of TKIP security mechanism and propose an optimised implementation, called LOTKIP, to decrease processing overhead for better energy efficient security performance. The LOTKIP improvements are based on minimising key mixing redundancy and a novel frame encapsulation with low overhead. We simulate and compare LOTKIP with baseline TKIP in terms of complexity and energy consumption for ad hoc wireless network security. From simulation results, we demonstrate that LOTKIP executes with lower computational complexity, hence, with faster encryption time and more energy-efficient.