Analysis of Security Overhead in Broadcast V2V Communications

Muhammad, Mujahid and Kearney, Paul and Aneiba, Adel and Kunz, Andreas (2019) Analysis of Security Overhead in Broadcast V2V Communications. In: The 2nd International Workshop on Safety, Security, and Privacy in Automotive Systems (STRIVE 2019), 10th September, 2019, Turku, Finland.


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This paper concerns security issues for broadcast vehicle to vehicle (V2V) messages carrying vehicle status information ((location, heading, speed, etc.). These are often consumed by safety-related applications that e.g. augment situational awareness, issue alerts, recommend courses of action, and even trigger autonomous action. Consequently, the messages need to be both trustworthy and timely. We explore the impact of authenticity and integrity protection mechanisms on message latency using a model based on queuing theory. In conditions of high traffic density such as found in busy city centres, even the latency requirement of 100ms for first generation V2V applications was found to be challenging. Our main objective was to compare the performance overhead of the standard, PKC-based, message authenticity and integrity protection mechanism with that of an alternative scheme, TESLA, which uses symmetric-key cryptography combine with hash chains. This type of scheme has been dismissed in the past due to sup-posed high latency, but we found that in high traffic density conditions it outperformed the PKC-based scheme. without invoking congestion management measures. Perhaps the most significant observation from a security perspective is that denial of service attacks appear very easy to carry out and hard to defend against. This merits attention from the research and practitioner communities and is a topic we intend to address in the future.

Item Type: Conference or Workshop Item (Paper)
3 June 2019Accepted
9 August 2019Published Online
Uncontrolled Keywords: V2V, Security, Performance, Queuing theory
Subjects: CAH11 - computing > CAH11-01 - computing > CAH11-01-01 - computer science
Divisions: Faculty of Computing, Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Computing and Digital Technology
Depositing User: Mujahid Muhammad
Date Deposited: 13 Jun 2019 07:27
Last Modified: 22 Mar 2023 12:01

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