Abstract-Communication messages in vehicular ad hoc networks (VANET) can be used to locate and track vehicles. While tracking can be beneficial for vehicle navigation, it can also lead to threats on location privacy of vehicle user. In this paper, we address the problem of mitigating unauthorized tracking of vehicles based on their broadcast communications, to enhance the user location privacy in VANET. Compared to other mobile networks, VANET exhibits unique characteristics in terms of vehicular mobility constraints, application requirements such as a safety message broadcast period, and vehicular network connectivity. Based on the observed characteristics, we propose a scheme called AMOEBA, that provides location privacy by utilizing the group navigation of vehicles. By simulating vehicular mobility in freeways and streets, the performance of the proposed scheme is evaluated under VANET application constraints and two passive adversary models. We make use of vehicular groups for anonymous access to location based service applications in VANET, for user privacy protection. The robustness of the user privacy provided is considered under various attacks.
Abstract-Commercial aviation is at the threshold of the era of the e-enabled airplane, brought about by the convergence of rapidly expanding world-wide data communication infrastructures, network-centric information processing and commoditized lightweight computational hardware. With advanced avionics, processing and wireless communication capabilities, the e-enabled airplane can revolutionize the current air transportation system. However, the use of unregulated information technology and wireless technologies introduce vulnerabilities that can be exploited to provide unauthorized access to the onboard aviation information systems and impede their operation. The emerging security threats are not covered by current aviation guidance and regulations hence, remain to be addressed. This paper presents a comprehensive survey of security of the e-enabled airplane with applications such as electronic distribution of loadable software and data, as well as future directions such as wireless health monitoring, networked control, and airborne ad hoc networks.
Making airplanes network-enabled can significantly increase the efficiency of aircraft manufacturing, operation and maintenance processes. Yet these benefits cannot be realized without addressing the potential for network-induced security threats. This paper addresses challenges that emerge for network-enabled airplanes that use public key cryptography-based applications. In particular, we focus on the electronic distribution of airplane software and data. We present both an ad hoc approach, without trust chains between certificates, and a structured approach employing a PKI. Both approaches facilitate public key-enabled applications, and both levy operational requirements on airlines. We describe the integration of these requirements into existing airline ground infrastructure and processes, to minimize operating overhead. The presented work is based on ongoing collaborative efforts among Boeing, FAA and EASA, to identify needs of the airlines for operating and maintaining network-enabled airplanes.
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