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Sensors 2016, 16(6), 879; doi:10.3390/s16060879

Security in Intelligent Transport Systems for Smart Cities: From Theory to Practice

Qatar Mobility Innovations Center (QMIC), Qatar Science and Technology Park (QSTP), PO Box 210531, Doha, Qatar
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Academic Editor: Rongxing Lu
Received: 28 April 2016 / Revised: 25 May 2016 / Accepted: 8 June 2016 / Published: 15 June 2016
(This article belongs to the Special Issue Security and Privacy in Sensor Networks)

Abstract

Connecting vehicles securely and reliably is pivotal to the implementation of next generation ITS applications of smart cities. With continuously growing security threats, vehicles could be exposed to a number of service attacks that could put their safety at stake. To address this concern, both US and European ITS standards have selected Elliptic Curve Cryptography (ECC) algorithms to secure vehicular communications. However, there is still a lack of benchmarking studies on existing security standards in real-world settings. In this paper, we first analyze the security architecture of the ETSI ITS standard. We then implement the ECC based digital signature and encryption procedures using an experimental test-bed and conduct an extensive benchmark study to assess their performance which depends on factors such as payload size, processor speed and security levels. Using network simulation models, we further evaluate the impact of standard compliant security procedures in dense and realistic smart cities scenarios. Obtained results suggest that existing security solutions directly impact the achieved quality of service (QoS) and safety awareness of vehicular applications, in terms of increased packet inter-arrival delays, packet and cryptographic losses, and reduced safety awareness in safety applications. Finally, we summarize the insights gained from the simulation results and discuss open research challenges for efficient working of security in ITS applications of smart cities. View Full-Text
Keywords: Intelligent Transport Systems; smart cities; Security and Privacy; Elliptic Curve Cryptography; quality of service; safety awareness; experimental benchmark; network simulations Intelligent Transport Systems; smart cities; Security and Privacy; Elliptic Curve Cryptography; quality of service; safety awareness; experimental benchmark; network simulations
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Javed, M.A.; Ben Hamida, E.; Znaidi, W. Security in Intelligent Transport Systems for Smart Cities: From Theory to Practice. Sensors 2016, 16, 879.

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