543 résultats
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On the hardness of the NTRU problem
Orateur : Alice Pellet-Mary - CNRS, Institut Mathématiques de Bordeaux
The NTRU problem is an algorithmic problem over structured lattices that was introduced by Hoffstein, Pipher, and Silverman more than 20 years ago, and which has been used to construct various cryptographic primitives. However, its relation to other lattice problems is still not well understood.<br/> In this talk, we will describe different variants of the NTRU problem, and study how they compare[…] -
Key recovery from partial information
Orateur : Gabrielle De Michelli - UC San Diego
The security of deployed protocols not only relies on the hardness of the underlying mathematical problem but also on the implementation of the algorithms involved. Many fast modular exponentiation algorithms have piled up over the years and some implementations have brought vulnerabilities that are exploitable by side-channel attacks, in particular cache attacks.<br/> In this talk, we consider[…] -
Post-Quantum Cryptography Hardware: Monolithic Implementations vs. Hardware-Software Co-Design
Orateur : Markku-Juhani Saarinen - PQShield
At PQShield, we've developed dedicated coprocessor(s) for lattice schemes, hash-based signatures, and code-based cryptography. These cryptographic modules are commercial rather than academic and designed to meet customer specifications such as a specific performance profile or Common Criteria and FIPS security certification requirements. Hardware implementations of legacy RSA and Elliptic Curve[…] -
Code-based postquantum cryptography : candidates to standardization
Orateur : Nicolas Sendrier - INRIA
At the third round of the NIST standardization process, three candidates remain with a security based on error correcting codes, all are key exchange mechanisms. We will explore them according to their security assumptions and properties. Among them, we find an historical scheme (Classic McEliece), as well as schemes using sparse and quasi-cyclic matrices (BIKE and HQC). We will examine pros and[…] -
co-organisée avec le séminaire sécurité des systèmes électroniques embarqués
Orateur : mot de passe: 344005 - très classe le mot de passe en clair !
https://seminaires-dga.inria.fr/securite-elec/<br/> lien: https://bbb.irisa.fr/b/ger-mvp-9xd -
Lattice-based NIST candidates: abstractions and ninja tricks
Orateur : Thomas Prest - PQShield
I will present the remaining lattice-based candidates for standardization by NIST (2 signature schemes, 5 encryption schemes). At a high level, these can all be interpreted as straightforward instantiations of decades-old paradigms. But when we look under the hood, all of them make design choices which impact their security, efficiency and portability in distinct manners; we will discuss these.[…]