Balancing auditability and privacy in vehicular networks

Choi, Jong Youl; Jakobsson, Markus; Wetzel, Susanne

doi:10.1145/1089761.1089775

Cited by 96 publications

(42 citation statements)

References 19 publications

(16 reference statements)

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“…At the heart of virtually all of these solutions lie encryption key agreements between various entities designed to bootstrap trust between communicating vehicles or between vehicles and the roadside infrastructure. Recently, a number of protocols have been developed for key agreement supporting confidentiality and authentication services in VANET [48,49,50,51,42]. There seems to be a consensus that while symmetric-key-based protocols tend to be simpler, some of these protocols are not sufficiently flexible for use in dynamically re-configurable networks, since they cannot efficiently handle unanticipated additions of vehicles to the network.…”

Section: Security and Privacy Issues In Vanetmentioning

confidence: 99%

Friend: A cyber-physical system for traffic flow related information aggregation and dissemination

El-Tawab

Olariu

Almalag

2012

2012 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)

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A cyber-physical system for traffic Flow-Related Information aggrEgatioN and Dissemination. By integrating resources and capabilities at the nexus between the cyber and physical worlds, FRIEND will contribute to aggregating traffic flow data collected by the huge fleet of vehicles on our roads into a comprehensive, near real-time synopsis of traffic flow conditions. We anticipate providing drivers with a meaningful, color-coded, at-a-glance view of flow conditions ahead, alerting them to congested traffic.FRIEND can be used to provide accurate information about traffic flow and can be used to propagate this information. The workhorse of FRIEND is the ubiquitous lane delimiters (a.k.a. cat's eyes) on our roadways that, at the moment, are used simply as dumb reflectors.Our main vision is that by endowing cat's eyes with a modest power source, detection and communication capabilities they will play an important role in collecting, aggregating and disseminating traffic flow conditions to the driving public. We envision the cat's eyes system to be supplemented by road-side units (RSU) deployed at regular intervals (e.g. every kilometer or so). The RSUs placed on opposite sides of the roadway constitute a logical unit and are connected by optical fiber under the median. Unlike inductive loop detectors, adjacent RSUs along the roadway are not connected with each other, thus avoiding the huge cost of optical fiber. Each RSU contains a GPS device (for time synchronization), an active Radio Frequency Identification (RFID) tag for communication with passing cars, a radio transceiver for RSU to RSU communication and a laptop-class computing device.The physical components of FRIEND collect traffic flow-related data from passing vehicles. The collected data is used by FRIEND's inference engine to build beliefs about the state of the traffic, to detect traffic trends, and to disseminate relevant traffic flow-related information along the roadway. The second contribution of this thesis is the development of an incident classification and detection algorithm that can be used to classify different types of traffic incident. Then, it can notify the necessary target of the incident. We also compare our incident detection technique with other VANET techniques.Our third contribution is a novel strategy for information dissemination on highways. First, we aim to prevent secondary accidents. Second, we notify drivers far away from the accident of an expected delay that gives them the option to continue or exit before reaching the incident location. A new mechanism tracks the source of the incident while notifying drivers away from the accident. The more time the incident stays, the further the information needs to be propagated. Furthermore, the denser the traffic, the faster it will backup. In high density highways, an incident may form a backup of vehicles faster than low density highways. In order to satisfy this point, we need to propagate information as a function of density and time.iv

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Section: Security and Privacy Issues In Vanetmentioning

confidence: 99%

Friend: A cyber-physical system for traffic flow related information aggregation and dissemination

El-Tawab

Olariu

Almalag

2012

2012 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)

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“…Also to meet the overhead requirements in terms of either processing or bandwidth, Elliptic Curve Cryptography has been chosen for the IEEE 1609 trial standard. On the other hand, the authors in (Choi et al, 2005) suggest a system based exclusively on symmetric cryptography. The main problem of their proposal is that vehicles have to contact always the base station to decrypt and verify messages.…”

Section: Security Backgroundmentioning

confidence: 99%

Security Issues in Vehicular Ad Hoc Networks

Caballero‐Gil¹

2011

Mobile Ad-Hoc Networks: Applications

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“…However, most of these contributions [11][12][13][14][15][16][17][18][19][20] rely on a policy that grants trust to the RSU or the security center (also called authentication server) in the network not to trace the identity of a particular OBU (vehicle or driver) without a legal reason. Such policy threatens anonymity and may prevent drivers from joining the service.…”

Section: Previous and Related Workmentioning

confidence: 99%

Noninteractive, Anonymously Authenticated, and Traceable Message Transmission for VANETs

Ibrahim

2009

International Journal of Vehicular Technology

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Unlike sensor and other ad-hoc wireless networks, vehicular ad-hoc networks (VANETs) are characterized by its high mobility which allows a very short communication interval among onboard units (OBUs) and between an OBU and road-side units (RSUs). This major characterization motivates the design of communication protocols that are noninteractive or at least require a very limited number of rounds between units. The challenging issue is that such protocols must satisfy a number of security services that could be complex by their nature. In secure VANETs protocols, anonymity and traceability are two important services, yet, achieving a satisfactory security level for both of them-with acceptable complexity-is not an easy task due to the contradicting requirements: anonymous transmission must not be traceable by any individual while if a transmission is traceable, then anonymity is threatened. Existing secure VANETs protocols for anonymous and traceable transmissions either, provide unconditional anonymity where traceability and revocation are impossible, or grant trust to a thirdparty not to reveal the identity of a unit unless there is a legal reason. In this paper, we propose the first secure VANET protocol that allows authenticated transmission among OBUs and RSUs and at the same time enjoys the following properties. (i) The transmission among OBUs and RSUs is noninteractive (i.e., a one-move transmission without any interactive setup requirements). (ii) The authenticated transmission between any pair of units is anonymous (i.e., no single authority knows any information about the identity of the communicating OBU). (iii) In serious road crimes (e.g., hit-and-run, road rage, etc.) and under court order, an OBU could be traced to its clear identity. We also show how our protocol could be used to setup a confidential session between any pair of units without relying on extensive number of interactive rounds.

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Balancing auditability and privacy in vehicular networks

Cited by 96 publications

References 19 publications

Friend: A cyber-physical system for traffic flow related information aggregation and dissemination

Friend: A cyber-physical system for traffic flow related information aggregation and dissemination

Security Issues in Vehicular Ad Hoc Networks

Noninteractive, Anonymously Authenticated, and Traceable Message Transmission for VANETs

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