Technical reports: CMU-CyLab-08-011
| Title: | TACKing Together Efficient Authentication, Revocation, and Privacy in VANETs |
|---|---|
| Authors: | Ahren Studer, Elaine Shi, Fan Bai, Adrian Perrig |
| Publication Date: | July 8, 2008 |
| Full Report: | CMU-CyLab-08-011 (.pdf) |
Abstract
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