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Privacy-Preserving Speed-Limit Enforcement

Stefan Rass1, Peter Schartner1, Patrick Horster1 , and Alexander Abl2
1.Institute of Applied Informatics, Universitaet Klagenfurt, Klagenfurt, Austria
2.Kapsch TrafficCom AG, Klagenfurt, Austria
Abstract—We describe a new speed-limit enforcement system with particular care for driver privacy and anonymity. Based on a novel application of identity-based encryption and homomorphic commitments, we demonstrate how a driver's identity can be processed in a way that is implicitly constrained to the mere detection of a speed limit violation. Using shared information that is distributed over the components of the system, we can assure protection of an identity even against insider attacks, up to the point where evidence of a speed limit violation is available.

Index Terms—section control, speed-limit enforcement, traffic, safety, security, anonymity, privacy

Cite: Stefan Rass, Peter Schartner, Patrick Horster, and Alexander Abl, "Privacy-Preserving Speed-Limit Enforcement," Journal of Traffic and Logistics Engineering, Vol. 2, No. 1, pp. 26-33, March 2014. doi: 10.12720/jtle.2.1.26-33
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