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Tomandl, A., Herrmann, D., Federrath, H..  2014.  PADAVAN: Privacy-Aware Data Accumulation for Vehicular Ad-hoc Networks. Wireless and Mobile Computing, Networking and Communications (WiMob), 2014 IEEE 10th International Conference on. :487-493.

In this paper we introduce PADAVAN, a novel anonymous data collection scheme for Vehicular Ad Hoc Networks (VANETs). PADAVAN allows users to submit data anonymously to a data consumer while preventing adversaries from submitting large amounts of bogus data. PADAVAN is comprised of an n-times anonymous authentication scheme, mix cascades and various principles to protect the privacy of the submitted data itself. Furthermore, we evaluate the effectiveness of limiting an adversary to a fixed amount of messages.

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Tomandl, A., Herrmann, D., Fuchs, K.-P., Federrath, H., Scheuer, F..  2014.  VANETsim: An open source simulator for security and privacy concepts in VANETs. High Performance Computing Simulation (HPCS), 2014 International Conference on. :543-550.

Aside from massive advantages in safety and convenience on the road, Vehicular Ad Hoc Networks (VANETs) introduce security risks to the users. Proposals of new security concepts to counter these risks are challenging to verify because of missing real world implementations of VANETs. To fill this gap, we introduce VANETsim, an event-driven simulation platform, specifically designed to investigate application-level privacy and security implications in vehicular communications. VANETsim focuses on realistic vehicular movement on real road networks and communication between the moving nodes. A powerful graphical user interface and an experimentation environment supports the user when setting up or carrying out experiments.