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Technical Reports: CMU-CyLab-08-011

Title:TACKing Together Efficient Authentication, Revocation, and Privacy in VANETs
Authors:Ahren Studer, Fan Bai, Bhargav Bellur, Adrian Perrig
Publication Date:July 8, 2008


Vehicular Ad Hoc Networks (VANETs) require some mechanism to help authenticate messages, identify valid vehicles, and remove malevolent vehicles.  A Public Key Infrastructure (PKI) can provide this functionality using certificates and fixed public keys.  However, fixed keys allow an eavesdropper to associate a key with a vehicle and a location, violating driver's privacy.  In this work we examine a VANET key management scheme based on Temporary Anonymous Certified Keys (TACKs).  Our scheme efficiently prevents eavesdroppers from linking a vehicle's different keys and provides timely revocation of misbehaving participants while maintaining the same or less overhead for vehicle-to-vehicle communication as the current IEEE 1609.2 standard for VANET security

Full Report: CMU-CyLab-08-011