Authors:
Sebastian Bittl
and
Arturo A. Gonzalez
Affiliation:
Fraunhofer ESK, Germany
Keyword(s):
Privacy, Tracking, VANET, ETSI ITS, WAVE.
Related
Ontology
Subjects/Areas/Topics:
Applications and Uses
;
Sensor Networks
;
Sensor, Mesh and Ad Hoc Communications and Networks
;
Telecommunications
;
Vehicular Networks
;
Wireless Information Networks and Systems
Abstract:
Wireless vehicular networks are about to enter the deployment stage in the next years with important progress
being made in Europe and the USA. Thereby, one of the core concerns is privacy of vehicles and their drivers,
especially in Europe. Prior work has regarded only a small sub-set of the information exposed by current
standards to an attacker for vehicle tracking. Thus, we take a close look on the data contained on different
protocol layers of an ETSI ITS system. We find that much data is very distinctive and can be used to identify
static vehicle parameters such as manufacturer or even model. This greatly reduces the usability of formerly
proposed cooperative pseudonym switching strategies. Many more constraints have to be applied for selecting
cooperation partners significantly reducing their availability. Therefore, current techniques cannot provide the
level of privacy defined in VANET standards. Suggestions for improving the security entity and facility layer
of ETSI ITS ar
e given to limit the impact of the found issues.
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