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Authentification dans les réseaux véhiculaires opérés

Abstract : In this thesis, we address the challenge of users' authentication in vehicular networks managed by the network operator. The difficulty of our task lies in coping with the special characteristics of vehicular networks which are mainly high mobility, connectivity instability and diversity of security models and challenges following the services types. We employ a WLAN radio technology (i.e. the maximal transmission range is around 1000 m) which is known to be easier and less costly to deploy. The proposed work in this thesis comprises 4 main contributions. In the first and most important contribution, we propose and analyze a set of architectures and protocols for authentication in vehicular networks. Our architectures and protocols implement a number of mechanisms achieving authentication and credential delivery to vehicles while garanteeing security of the authentication messages, privacy of drivers, access restriction to layer 3 (i.e. network layer) services and protocols before the successful completion of the authentication, availability of authentication and consideration of real time constraints. Our authentication framework mainly comprises 2 protocols: (i) the AUCRED protocol which is defined as an extension of the TLS authentication for the mutual authentication and volatile anonymous ECC based certificates delivery and (ii) the EGEMO protocol for the layer-2 geographic multi-hop transport of EAP protocol encapsulating the AUCRED protocol. Based on the analysis of these protocols, we introduce as a second contribution, an optimization approach for the authentication transport process aiming to reduce the number of packets generated in the network during the authentication process, especially in high vehicles density scenarios. Due to the special role of the authentication service which preceeds and conditions the access to the network resources and services and because of the forseeable competition between the authentication service and other services in DSRC ("Dedicated Short Range Communications", set of standards including IEEE 802.11p and dedicated to vehicular communications) networks, we introduce through a third contribution, a priotitization approach of the authentication service using DSRC channels diversity. In order to maintain a high level of performance of the authentication service in high vehicles density scenarios without incurring any material complexity on network nodes (e.g. using only one network interface per node), we propose through the fourth contribution, a distribution or delegation scheme of the authentication function that is supposed to be centralized at the authentication server.
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Submitted on : Wednesday, July 7, 2010 - 8:00:00 AM
Last modification on : Friday, July 31, 2020 - 10:44:05 AM
Long-term archiving on: : Friday, October 8, 2010 - 9:48:21 AM


  • HAL Id : pastel-00004554, version 1



Christian Tchepnda. Authentification dans les réseaux véhiculaires opérés. domain_other. Télécom ParisTech, 2008. English. ⟨pastel-00004554⟩



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