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The strongest feature of ad hoc networks is its capability to be rapidly deployed anywhere and anytime without relying on a pre-existing infrastructure. From there, ad hoc networks offer the advantages to be auto-organized, ubiquitous, dynamic and completely autonomous. As a counter part, securing them becomes a more difficult task, especially because of(More)
In this paper we propose an approach, combining the SET protocol with the TLS/WTLS protocols in order to enforce the security services over the WAP 1.X for the payment in the m-commerce. We propose to implement the additional services of the SET protocol as the confidentiality of the payment information between the buyer and the payment gateway and the data(More)
The emergence of new mobile and wireless networks, with novel capabilities, offers opportunities to widen traditional internet-based applications. In this paper, we focus on a famous and widely used e-commerce application: auctions, and propose their deployment over ad hoc networks. Actually, we specify here this auction model while assuring identified(More)
Ad hoc networks arouse imminently an important interest within industrial and research communities. Actually, their salient features, essentially the absence of infrastructure and auto-management, promise huge applications and possibilities for wireless communication. However, the tremendous boom of these networks depends incontestably on their reliability(More)
In this paper we deal with the control of chaotic systems. Knowing that a chaotic attractor contains a myriad of unstable periodic orbits (UPO's), the aim of our work is to stabilize some of the UPO's embedded in the chaotic attractor and which have interesting characteristics. First, using the input-to-state linearization method in conjunction with a(More)
The development of WLANs in general and of Wi-Fi (802.11b standard) in particular, emerged these two last years as a technology support of public access to the Internet. We think that the potential role of Wi-Fi hotspots, those wireless networks deployed in public environments such as airports, hotels and conference centres, is enormous and will give a new(More)