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http://dx.doi.org/10.13089/JKIISC.2014.24.6.1147

Identity-Exchange based Privacy Preserving Mechanism in Vehicular Networks  

Hussain, Rasheed (Hanyang University)
Oh, Heekuck (Hanyang University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.24, no.6, 2014 , pp. 1147-1157 More about this Journal
Abstract
Intelligent transportation system (ITS) is realized through a highly ephemeral network, i.e. vehicular ad hoc network (VANET) which is on its way towards the deployment stage, thanks to the advancements in the automobile and communication technologies. However, it has not been successful, at least to date, to install the technology in the mass of vehicles due to security and privacy challenges. Besides, the users of such technology do not want to put their privacy at stake as a result of communication with peer vehicles or with the infrastructure. Therefore serious privacy measures should be taken before bringing this technology to the roads. To date, privacy issues in ephemeral networks in general and in VANET in particular, have been dealt with through various approaches. So far, multiple pseudonymous approach is the most prominent approach. However, recently it has been found out that even multiple pseudonyms cannot protect the privacy of the user and profilation is still possible even if different pseudonym is used with every message. Therefore, another privacy-aware mechanism is essential in vehicular networks. In this paper, we propose a novel identity exchange mechanism to preserve conditional privacy of the users in VANET. Users exchange their pseudonyms with neighbors and then use neighbors' pseudonyms in their own messages. To this end, our proposed scheme conditionally preserves the privacy where the senders of the message can be revoked by the authorities in case of any dispute.
Keywords
VANET; VANET Clouds; Security; Conditional Privacy; Revocation; Route Tracing;
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