Filter by content type
Select one or more filters. This choice will reload the page to display the filtered results.
702 results
-
-
Seminar
-
Cryptography
Practical Strategy-Resistant Privacy-Preserving Elections
Speaker : Quentin Santos - Orange
Recent advances in cryptography promise to let us run com- plex algorithms in the encrypted domain. However, these results are still mostly theoretical since the running times are still much larger than their equivalents in the plaintext domain. In this context, Majority Judgment is a recent proposal for a new voting system with several interesting practical advantages, but which implies a more[…] -
-
-
Seminar
-
Cryptography
Quantum security of the Fiat-Shamir transform of commit and open protocols
Speaker : André Chailloux - INRIA
Applying the Fiat-Shamir transform on identification schemes is one of the main ways of constructing signature schemes. While the classical security of this transformation is well understood, there are still many cases for which we do not know whether the quantum security holds or not. In this paper, we show that if we start from a commit-and-open identification scheme, where the prover first[…] -
-
-
Seminar
-
Cryptography
Aggregate Cash Systems: A Cryptographic Investigation of Mimblewimble
Speaker : Michele Orru - ENS
-
-
-
Seminar
-
Cryptography
Unifying Leakage Models on a Renyi Day
Speaker : Thomas Prest - PqShield
In the last decade, several works have focused on finding the best way to model circuit leakage in order to obtain provably secure implementations. One of the most realistic models is the noisy leakage model, introduced in (Prouff, Rivain'13) and (Duc-Dziembowski-Faust'14) together with secure constructions. These works suffer from various limitations, in particular the use of ideal leak-free[…] -
-
-
Seminar
-
Cryptography
CSIDH: an efficient post-quantum commutative group action
Speaker : Chloé Martindale - Technical University of Eindhoven
CSIDH, or `commutative supersingular isogeny Diffie-Hellman' is a new isogeny-based protocol of Castryck, Lange, Martindale, Panny, and Renes.<br/> The Diffie-Hellman style scheme resulting from the group action allows for public key validation at very little cost, runs reasonably fast in practice, and has public keys of only 64 bytes at a conjectured AES-128 security level, matching NIST’s post[…] -
-
-
Seminar
-
Cryptography
Optimisation des Principaux Composants des Chiffrements par Bloc
Speaker : Baptiste Lambin - soutenance de thèse salle Métivier à l'IRISA, 14h
La sécurité des chiffrements par bloc évolue constamment au fur et à mesure que de nouvelles techniques de cryptanalyse sont découvertes. Lors de la conception de nouveaux chiffrements par bloc, il est donc nécessaire de considérer ces nouvelles techniques dans l'analyse de sécurité. Dans cette thèse, nous montrons comment construire certaines opérations internes des chiffrements par bloc pour[…] -