Description
Server-Aided Verification (SAV) is a method that can be employed to speed up the process of verifying signatures by letting the verifier outsource part of its computation load to a third party. Achieving fast and reliable verification under the presence of an untrusted server is an attractive goal in cloud computing and internet of things scenarios.In this talk I will describe a simple and powerful framework for SAV and present a security model that refines existing while covering the new notions of SAV-anonymity and extended unforgeability. In addition, I will present the first generic transformation from any signature scheme to a single-round SAV scheme that incorporates verifiable computation."Automated verification of privacy-type properties for security protocols"par Ivan Gazeau (LORIA, Inria Nancy)Date : 16 mars 2018Lieu : Salles Petri/TuringThe applied pi-calculus is a powerful framework to model protocols and to define security properties. In this symbolic model, it is possible to verify automatically complex security properties such as strong secrecy, anonymity and unlinkability properties which are based on equivalence of processes.In this talk, we will see an overview of a verification method used by a tool, Akiss. The tool is able to handle - a wide range of cryptographic primitives (in particular AKISS is the only tool able to verify equivalence properties for protocols that use xor); - protocols with else branches (the treatment of disequalities is often complicated). We will also provide some insights on how interleaving due to concurrency can be effectively handled."
Infos pratiques
Prochains exposés
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Les jeux vidéo de l’écran au réel : enjeux juridiques et (géo)politiques au prisme de la cybersécurité
Orateur : Léandre Lebon, Sandrine Turgis - Univ Rennes, IODE
Protection des droits d’auteur, lutte contre les techniques de triche, interactions avec la guerre et les conflits hybrides, enjeux de démocratie ... Sous l’angle de la cybersécurité les enjeux juridiques et (géo)politiques des jeux video sont nombreux. Cette présentation du groupe de travail sur les jeux video (GTJV) permettra d’alimenter la réflexion sur l’articulation entre jeux video et[…]-
Law
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The Quest for my Perfect MATE. Investigate MATE: Man-at-the-End attacker (followed by a hands-on application).
Orateur : Mohamed Sabt, Etienne Nedjaï - Univ Rennes, IRISA
Shannon sought security against an attacker with unlimited computational powers: if an information source conveys some information, then Shannon’s attacker will surely extract that information. Diffie and Hellman refined Shannon’s attacker model by taking into account the fact that the real attackers are computationally limited. This idea became one of the greatest new paradigms in computer[…]