Beyond CPA security for FHE

Apparaît dans la collection : 2024 - T3 - WS2 - Emerging topics in design and cryptanalysis of post-quantum schemes

Since its inception more than ten years ago, Fully Homomorphic Encryption has been the subject of a lot of research towards more efficiency and better practicality. From a security perspective, however, FHE still raises a number of questions and challenges, in particular due to the fact that all the FHE used in practice achieve only CPA-security (and all of these schemes are trivially CCA1 insecure). Over the last few years, very active research has been done to explore the security of FHE beyond that regime with new security notions, attacks and constructions emerging. In this talk, we will cover recent “slightly beyond CPA” security notions, such as CPAD, as well as new attacks on FHE in that model. We’ll then move on to CCA security for FHE and present recent results towards answering the two questions: can we build FHE schemes offering some degree of CCA security? And, what is the strongest degree of CCA-security achievable by FHE?

Mathématiques
et Interactions

Not Only Scalar Curvature Seminar

Geometric structures and discrete group actions / Structures géométriques et actions de groupes discrets

Misha Gromov : Mathematical Description of Biological Structures

Applications of NonCommutative Geometry to Gauge Theories, Field Theories, and Quantum Space-Time / Applications de la Géométrie Non Commutative aux Théories de Jauge, à la Théorie des Champs et aux Espaces-Temps Quantiques

Beyond CPA security for FHE

Informations sur la vidéo

Données de citation

Domaine(s)

Bibliographie

Codes MSC

Dernières questions liées sur MathOverflow

Poser une question sur MathOverflow

Quantum Machine Learning for Natural Language Processing

New Directions for Quantum Copy-Protection

Cryptographic Characterization of Quantum Advantage

Quantum Oblivious LWE Sampling and Insecurity of Standard Model Lattice-Based SNARKs

Quantum Entanglement Distribution between Manhattan and Brooklyn

Beyond CPA security for FHE

Informations sur la vidéo

Données de citation

Domaine(s)

Bibliographie

Codes MSC

Dernières questions liées sur MathOverflow

Poser une question sur MathOverflow

Inscrivez-vous