Gilles Guette

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A Vehicular Ad hoc Network is a collection of mobile hosts forming a temporary network without the aid of any established infrastructure. This flexibility in space and time induces new challenges towards the security needed to support secure communications. Indeed, VANET are subject to attacks due to their vulnerabilities; one of the most compromising(More)
Since few years, Vehicular Ad hoc Networks deserve much attention. The development of wireless communication in VANET implies to take into account the need of security. In VANET, many attacks rely on having the attacker generate multiple identities to simulate multiple nodes: this is called the Sybil attack. In this paper, we propose a precise(More)
Vehicular Ad hoc Networks get increased attention by vehicle manufacturers and researchers. Their deployment requires that security and privacy issues be resolved, particularly since they rely on wireless communication. In this paper, we propose a TPM-based security architecture, where TPM are embedded in vehicles. We emphasize the management of(More)
Reputation systems allow to estimate the trustworthiness of entities based on their past behavior. Electronic commerce, peer-to-peer routing and collaborative environments, just to cite a few, highly benefit from using reputation systems. To guarantee an accurate estimation, reputation systems typically rely on a central authority, on the identification and(More)
More and more mobile devices feature wireless communication capabilities. They can self-organize in a mobile ad hoc network in order to communicate and maintain connectivity without any infrastructure component. In this context, some devices may benefit from established trust relations in order to communicate private data. Various solutions already exist(More)
We present the AMORES project, which aims to provide an architecture for the provision of privacy preserving and resilient collaborative services in "mobiquitous" (i.e., mobile and ubiquitous) systems. The project is built around three use-cases from the area of public transportation: (1) dynamic carpooling, (2) real-time computation of multimodal(More)
Reputation mechanisms are a powerful tool to reduce the potential risk of interacting with almost or completely unknown users in environments in which there is no incentive to behave trustworthily, e.g. in open and large-scale systems. However, by collecting feedback about users, reputation mechanisms can easily be manipulated to deduce users’ profiles;(More)
New generation military equipment, soldiers and vehicles, use wireless technology to communicate on the battlefield. During missions, they form an ad hoc network, namely Mobile Ad hoc NETwork (MANET). Since the battlefield includes coalition, each group may communicate with another group, and inter-MANET communication may be established. Inter-MANET (or(More)