Résumé: Le principal objectif de la cryptographie est de proposer des solutions algorithmiques pour permettre à deux parties de communiquer de manière sûre à travers un canal de communication non-sécurisé. Les primitives cryptographiques font office de briques élémentaires pour construire

Abstract : Deciding if a system of polynomial equations has a solution over Q is one of the oldest questions in number theory and over the years it has proved to be a real challenge. One of the first    

Abstract : Van der Corput lemma is an interesting tool to analyse in a quick and simple manner the rough behaviour of oscillatory integrals. However, its original statement fails to work in the picture of several variables, forcing us to