The BiBa one-time signature and broadcast authentication protocol
CCS '01 Proceedings of the 8th ACM conference on Computer and Communications Security
Preserving Privacy in Environments with Location-Based Applications
IEEE Pervasive Computing
Anonymous Usage of Location-Based Services Through Spatial and Temporal Cloaking
Proceedings of the 1st international conference on Mobile systems, applications and services
Introduction to Probability Models, Ninth Edition
Introduction to Probability Models, Ninth Edition
Protecting Location Privacy with Personalized k-Anonymity: Architecture and Algorithms
IEEE Transactions on Mobile Computing
Towards an information theoretic metric for anonymity
PET'02 Proceedings of the 2nd international conference on Privacy enhancing technologies
On the effectiveness of changing pseudonyms to provide location privacy in VANETS
ESAS'07 Proceedings of the 4th European conference on Security and privacy in ad-hoc and sensor networks
Impact of pseudonym changes on geographic routing in VANETs
ESAS'06 Proceedings of the Third European conference on Security and Privacy in Ad-Hoc and Sensor Networks
A reliability framework for traffic signal control
IEEE Transactions on Intelligent Transportation Systems
IEEE Transactions on Intelligent Transportation Systems
Routing in Sparse Vehicular Ad Hoc Wireless Networks
IEEE Journal on Selected Areas in Communications
AMOEBA: Robust Location Privacy Scheme for VANET
IEEE Journal on Selected Areas in Communications
Vehicular telematics over heterogeneous wireless networks: A survey
Computer Communications
Proceedings of the 4th ACM SIGSPATIAL International Workshop on Security and Privacy in GIS and LBS
Indistinguishable regions in geographic privacy
Proceedings of the 27th Annual ACM Symposium on Applied Computing
Security solutions for highly dynamic car2x networks in the KoFAS initiative
Nets4Cars/Nets4Trains'12 Proceedings of the 4th international conference on Communication Technologies for Vehicles
Cooperative pseudonym change scheme based on the number of neighbors in VANETs
Journal of Network and Computer Applications
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Advances in mobile networks and positioning technologies have made location information a valuable asset in vehicular ad-hoc networks (VANETs). However, the availability of such information must be weighted against the potential for abuse. In this paper, we investigate the problem of alleviating unauthorized tracking of target vehicles by adversaries in VANETs. We propose a vehicle density-based location privacy (DLP) scheme which can provide location privacy by utilizing the neighboring vehicle density as a threshold to change the pseudonyms. We derive the delay distribution and the average total delay of a vehicle within a density zone. Given the delay information, an adversary may still be available to track the target vehicle by some selection rules. We investigate the effectiveness of DLP based on extensive simulation study. Simulation results show that the probability of successful location tracking of a target vehicle by an adversary is inversely proportional to both the traffic arrival rate and the variance of vehicles' speed. Our proposed DLP scheme also has a better performance than both Mix-Zone scheme and AMOEBA with random silent period.