A practical and extendible vanets privacypreserving system

In this paper, we introduce a practical VANETs Privacy-Preserving System which aims to the prior location and identity privacy protecting. We propose the architecture and do some close analysis about that.
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A practical and extendible vanets privacypreserving systemJournal of Automation and Control Engineering, Vol. 1, No. 2, June 2013A Practical and Extendible VANETs PrivacyPreserving SystemYang Tao, Hu Jian-Bin, and Chen ZhongMoE Key Lab of High Confidence Software Technologies, Peking University, Beijing, 100871, ChinaMoE Key Lab of Computer Networks and Information Security, Peking University, Beijing, 100871, ChinaSchool of Electronics Engineering and Computer Science, Peking University, Beijing, 100871, China{ytao, hujb,chen}@infosec.pku.edu.cnAbstract—VANETs are the academic and industry researchpriorities in recent years. Security and privacy-preservinghave become a bottleneck for VANETs’ future developing.There are few literatures about the architecture of VANETsprivacy-protecting system. In this paper, we introduce apractical VANETs Privacy-Preserving System which aimsto the prior location and identity privacy protecting. Wepropose the architecture and do some close analysis aboutthat. The proposed system is based on the key technologiessuch as TP4RS protocol, and achieves some good features:the system not only can provide good identity and locationprivacy protecting for the vehicles, but also can beimplemented and deployed well because of its practicaldesign and expandability. To the best of our knowledge, ourscheme is the first architecture design scheme for thepractical VANETs privacy protecting system.Index Terms—vehicular ad-hoc networks,preserving, message authentication, traceabilityI.However, before the above attractive applicationscome into reality, the security and privacy issues shouldbe addressed. Otherwise, a VANET could be subject tomany security threats, which will lead to increasingmalicious attacks and service abuses. More precisely, anadversary can either forge bogus messages to misleadother drivers or track the locations of the intendedvehicles. Therefore, the security and privacy is the key tothe VANETs, and has been well-studied in recent years.Since the vehicle is extremely personal device, itscommunication data should be secured and the driver’sprivacy should be unrevealed. Generally, privacy means“Right of an individual to decide when and on what termshis or her attributes should be revealed” [1]. Driver’sattributes such as 5W1H (who, when, where, what, why,and how) can be revealed and utilized by adversarieswithout privacy-protecting. In the context of VANETs,privacy can be categorized into three parts [2]: 1) DataPrivacy: prevent others from obtaining communicationdata. 2) Identity Privacy: prevent others from identifyingsubject of communication. 3) Location Privacy: preventothers from learning one’s current or past location.Usually, data privacy easily achieved through encryptionmethod in an application layer. So identity and locationprivacy are usually mentioned as the privacy issues onVANETs.To address these issues, this paper proposes a practicaland extendible privacy preserving system for VANETs.Our scheme has the following unparalleled features:Achieving practical goal: The system has beendesigned as a practical-first system. According to the realvehicle environment, especially to the real transportationmanagement status, the system can be implementedsmoothly because of its practical-oriented.Achieving secure goal: The system exploit manysecure protocols and secure attack-protecting mechanismto get this target. And more, for preventing the rightabusing or misusing, some decentralized mechanism hasbeen adopted.Achieving extendible goal: The system can efficientlydeal with a growing secure protocols and applications,and does not rely on a large modification.privacy-INTRODUCTIONVehicular ad hoc networks (VANETs) are instances ofmobile ad hoc networks with the aim to enhance thesafety and efficiency of road traffic. And more, VANETscan provide various value-added infotainment services(such as location based service) on the road. Typically, ina VANET, Equipped with communication devices, aliasOn-Board Unit (OBU), vehicles can communicate witheach other (V-2-V communication mode) or with theRoadSide Units (RSUs) located at critical points of theroad (V-2-I communication mode), such as intersectionsor construction sites. The Transportation RegulationCenter (TRC) is in charge of the registration of all RSUsand OBUs each vehicle is equipped with. The TRC canreveal the real identity of a safety message sender byincorporating with its subordinate RSUs.According to the Dedicated Short RangeCommunications (DSRC), each vehicle equipped withOBU will broadcast routine traffic messages, such as theposition,currenttime,direction,speed,acceleration/deceleration, and traffic events, etc. In thisway, drivers can get better awareness of the drivingenvironment and take early actions to the abnormalsituation to improve the safety of both vehicle drivers andpassengers.©2013 Engineering and Technology Publishingdoi: 10.12720/joace.1.2.166-169II.166RELATED WORKJournal of Automation and Control Engineering, Vol. 1, No. 2, June 2013Security and privacy in VANETs raise manychallenging research issues that have been studied in theliterature. Raya et al. introduced the landmark HAB [3],[4] protocol, and the key idea is to install on each OBU alarge number of private keys and their correspondinganonymous certificates. To sign each launched message,a vehicle randomly selects one of its anonymouscertificates and uses its corresponding private key. Theother vehicles use the public key of the sender enclosedwith the anonymous certificate to authenticate the sourceof the message. These anonymous certificates aregenerated by employing the pseudo-identity of thevehicles, instead of taking any real identity informationof the drivers. Each certificate has a short life time tomeet the drivers’ privacy requirement. Although ...