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Seminar
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Cryptography
Towards Non-Interactive Zero-Knowledge from CDH and LWE
Speaker : Geoffroy Couteau - Karlsruher Institut für Technologie (KIT)
We provide a generic construction of non-interactive zero-knowledge (NIZK) schemes. Our construction is a refinement of Dwork and Naor’s (FOCS 2000) implementation of the hidden bits model using verifiable pseudorandom generators (VPRGs). Our refinement simplifies their construction and relaxes the necessary assumptions considerably. As a result of this conceptual improvement, we obtain[…] -
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Seminar
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Cryptography
Toutes les informations ici https://cca.inria.fr/
Speaker : Ilaria Chillotti, Ayoub Otmani, Ida Tucker et Brice Minaud - Séminaire C2
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Seminar
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Cryptography
Soutenance de thèse (exceptionnellement mercredi à 13h30 en salle Petri-Turing à l'IRISA): Algorithmes d'algèbre linéaire pour la cryptographie
Speaker : Claire Delaplace - Université Rennes 1
Dans cette thèse, nous discutons d’aspects algorithmiques de trois différents problèmes, en lien avec la cryptographie. La première partie est consacrée à l’algèbre linéaire creuse. Nous y présentons un nouvel algorithme de pivot de Gauss pour matrices creuses à coefficients exacts, ainsi qu’une nouvelle heuristique de selection de pivots, qui rend l’entière procédure particulièrement efficace[…] -
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Seminar
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Cryptography
Supersingular isogeny Diffie-Hellman
Speaker : Leonardo Colo - Univesité Aix-Marseille
Supersingular isogeny graphs have been used in the Charles–Goren–Lauter cryptographic hash function and the supersingular isogeny Diffie–Hellman (SIDH) protocole of De\,Feo and Jao. A recently proposed alternative to SIDH is the commutative supersingular isogeny Diffie–Hellman (CSIDH) protocole, in which the isogeny graph is first restricted to $\FF_p$-rational curves $E$ and $\FF_p$-rational[…] -
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Seminar
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Cryptography
Wave: A New Code-Based Signature Scheme
Speaker : Thomas Debris-alazard - inria
It is a long standing open problem to build an efficient and secure digital signature scheme based on the hardness of decoding a linear code which could compete with widespread schemes like DSA or RSA. The latter signature schemes are broken by a quantum computer with Shor’s algorithm. Code-based schemes could provide a valid quantum resistant replacement. We present here Wave the first « hash[…] -
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Seminar
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Cryptography
Cryptography based on rank metric codes
Speaker : Nicolas Aragon - Université de Limoges, exceptionnellement salle Jersey à l'ISTIC
In the past few years, the interest for rank metric based cryptography has drastically increased, especially since the beginning of the NIST Post-Quantum Cryptography standardization process : five rank metric based proposals were submitted to the first round. This talk will present the different approaches and tradeoffs for building Key Encapsulation Mechanisms and Public Key Encryption schemes[…] -