file.pdf (298.29 kB)
TACKing Together Efficient Authentication, Revocation, and Privacy in VANETs (CMU-CyLab-08-011)
journal contribution
posted on 2008-03-14, 00:00 authored by Ahren Studer, Elaine Shi, Fan Bai, Adrian PerrigVehicular Ad Hoc Networks (VANETs) require some mechanism
to help authenticate messages, identify valid vehicles, and re-
move 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 drivers’ 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.