Événements

9 résultats

• • Séminaire

  • Cryptographie

  CryptoVerif: a computationally-sound security protocol verifier

  • 28 novembre 2025 (13:45 - 14:45)

  • Batiment 32B salle 12

  Orateur : Bruno Blanchet - Inria

  CryptoVerif is a security protocol verifier sound in the computational model of cryptography. It produces proofs by sequences of games, like those done manually by cryptographers. It has an automatic proof strategy and can also be guided by the user. It provides a generic method for specifying security assumptions on many cryptographic primitives, and can prove secrecy, authentication, and[…]

  • Cryptography

• • Séminaire

  • Cryptographie

  Structured-Seed Local Pseudorandom Generators and their Applications

  • 05 décembre 2025 (13:45 - 14:45)

  • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

  Orateur : Nikolas Melissaris - IRIF

  We introduce structured‑seed local pseudorandom generators (SSL-PRGs), pseudorandom generators whose seed is drawn from an efficiently sampleable, structured distribution rather than uniformly. This seemingly modest relaxation turns out to capture many known applications of local PRGs, yet it can be realized from a broader family of hardness assumptions. Our main technical contribution is a[…]

  • Cryptography

• • Séminaire

  • Cryptographie

  Predicting Module-Lattice Reduction

  • 19 décembre 2025 (13:45 - 14:45)

  • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

  Orateur : Paola de Perthuis - CWI

  Is module-lattice reduction better than unstructured lattice reduction? This question was highlighted as `Q8' in the Kyber NIST standardization submission (Avanzi et al., 2021), as potentially affecting the concrete security of Kyber and other module-lattice-based schemes. Foundational works on module-lattice reduction (Lee, Pellet-Mary, Stehlé, and Wallet, ASIACRYPT 2019; Mukherjee and Stephens[…]

  • Cryptography