A Protocol for Authentication with Multiple Levels of Anonymity (AMLA) in VANETs

Bhavesh, Bharadiya N and Maity, Soumyadev and Hansdah, RC (2013) A Protocol for Authentication with Multiple Levels of Anonymity (AMLA) in VANETs. In: Advanced Information Networking and Applications Workshops (WAINA), 2013 27th International Conference on . pp. 462-469.

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Abstract

The basic requirements for secure communication in a vehicular ad hoc network (VANET) are anonymous authentication with source non-repudiation and integrity. The existing security protocols in VANETs do not differentiate between the anonymity requirements of different vehicles and the level of anonymity provided by these protocols is the same for all the vehicles in a network. To provide high level of anonymity, the resource requirements of security protocol would also be high. Hence, in a resource constrained VANET, it is necessary to differentiate between the anonymity requirements of different vehicles and to provide the level of anonymity to a vehicle as per its requirement. In this paper, we have proposed a novel protocol for authentication which can provide multiple levels of anonymity in VANETs. The protocol makes use of identity based signature mechanism and pseudonyms to implement anonymous authentication with source non-repudiation and integrity. By controlling the number of pseudonyms issued to a vehicle and the lifetime of each pseudonym for a vehicle, the protocol is able to control the level of anonymity provided to a vehicle. In addition, the protocol includes a novel pseudonym issuance policy using which the protocol can ensure the uniqueness of a newly generated pseudonym by checking only a very small subset of the set of pseudonyms previously issued to all the vehicles. The protocol cryptographically binds an expiry date to each pseudonym, and in this way, enforces an implicit revocation for the pseudonyms. Analytical and simulation results confirm the effectiveness of the proposed protocol.

Item Type:	Journal Article
Publication:	Advanced Information Networking and Applications Workshops (WAINA), 2013 27th International Conference on
Publisher:	IEEE
Additional Information:	IEEE 27th International Conference on Advanced Information Networking and Applications Workshops (WAINA), Barcelona, SPAIN, MAR 25-28, 2013
Keywords:	VANETs; Anonymous Authentication; Pseudonym; Identity Based Signature
Department/Centre:	Division of Electrical Sciences > Computer Science & Automation
Date Deposited:	13 Feb 2014 09:52
Last Modified:	13 Feb 2014 09:52
URI:	http://eprints.iisc.ac.in/id/eprint/48284

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