Description
QKD is a landmark of how quantum resources allow us to implement cryptographic
functionalities with a level of security that is not achievable only with classical resources.
However, key agreement is not sufficient to implement all functionalities of interest, and it is
well-known that they cannot be implemented with perfect security, even if we have access
to quantum resources. Thus, computational assumptions are necessary even in the quantum
world.
In this talk, I will cover recent examples that even in the computational setting, quantum
resources may give an advantage in the required assumption. More concretely, I will talk
about quantum implementations of multi-party computation and public-key encryption
under weaker computational assumptions than their classical counterparts. Moreover, I will
discuss new cryptographic assumptions that are inherently quantum, which have changed
the landscape of the feasibility of cryptographic primitives in the quantum world.
Practical infos
Next sessions
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Encryption homomorphe sans bruit à l'aide de groupes
Speaker : Pierre Guillot - Ravel Technologies (dispo Université de Strasbourg, IRMA)
Je vais rappeler les travaux de Nuida et Ostrovski sur l'utilisation des groupes pour l'élaboration de schémas cryptographiques homomorphes. Je vais présenter nos travaux qui fournissent des encodages à la fois plus efficaces et plus généraux, et qui déterminent exactement quels groupes peuvent être utilisés. Puis je vais discuter GRAFHEN, un protocole qui utilise ces idées. Je dirai juste[…]-
Cryptography
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