Mohamed Nidhal Mejri

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Vehicular Ad hoc Networks (VANETs) aim to enhance driving conditions and provide with drivers and road users a high level of safety. Thus, they are exposed to several kinds of attacks, especially Denial Of Service attacks family (DOS) which affect the availability of services of authentic users. In this paper, we define "Packets entropy" as a new metric to(More)
The vehicular adhoc network is the type of network.It is self configuring and decentralized architecture. In the vehicular adhoc network two type of communication is possible which is vehicle to vehicle and vehicle to infrastructure. Due to decentralized architecture of vehicular adhoc networks many malicious nodes may join the network which is responsible(More)
Vehicular Networks are an ideal target for various types of rational and non-rational attackers. To cope with, reaction methods against these attacks must exist. In this direction, game theory applied to the security of wireless networks (also known as security games) can be a good way of modeling. In this paper we propose a reaction method against DOS(More)
Vehicular Ad hoc Networks (VANETs), whose main objective is to provide road safety and enhance the driving conditions, are exposed to several kinds of attacks such as Denial of Service (DoS) attacks which affect the availability of the underlying services for legitimate users. We focus especially on the greedy behavior which has been extensively addressed(More)
Vehicular Networks must be sufficiently secured against the wide variety of security challenges to which they are exposed. Cryptography provides tools to solve many of these security problems. In this paper, we address the secure group communications problem in VANETs. By generating a secret group key that can be used to encrypt or authenticate, the members(More)
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