Description
Achieving secure and reliable communication in a wireless network is especially challenging when the end devices are energy constrained. Traditionally, forward error correcting codes (FECs) and encryption have been used to correct errors and provide secrecy respectively, in a tandem system. This conventional approach could be potentially less efficient than a joint system (where both functionalities are combined into a single paradigm). The key question is: can the two operations be combined safely and if so what are the impacts of such a joint construction on both error correction capability as well as security?<br/> In this talk we will show that it is indeed possible to combine error correction and encryption in the specific case of block ciphers. The core of this construction is a new class of maximum distance separable (MDS) codes, which we call high diffusion (HD) codes, that incorporate both a criterion for optimal diffusion as well as a criterion for error correction. We will present the fundamental ideas behind HD codes and discuss the construction of the codes and block ciphers based on these codes. Security and error correction capabilities of the joint system will be discussed. Stream mode construction of the cipher will also be presented along with some simulation results.
Prochains exposés
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La crypto-graphie et les crypto-monnaies
Orateur : Daniel Augot - INRIA Saclay—Île-de-France
De nos jours, la requête «crypto» dans un moteur de recherche renvoieaux cryptomonnaies. Mais «crypto means crypto», et on peut se poser laquestion des liens pertinents entre les deux domaines. D'un coté, le monde des cryptomonnaies et de la technologiesous-jacente s'est développé et évolue encore en dehors du mondeacadémique. Il faut suivre d'un coté des posts de blog, des fils dediscussion X[…] -
SoK: Security of the Ascon Modes
Orateur : Charlotte Lefevre - Radboud University
The Ascon authenticated encryption scheme and hash function of Dobraunig et al (Journal of Cryptology 2021) were recently selected as winner of the NIST lightweight cryptography competition. The mode underlying Ascon authenticated encryption (Ascon-AE) resembles ideas of SpongeWrap, but not quite, and various works have investigated the generic security of Ascon-AE, all covering different attack[…] -
Comprehensive Modelling of Power Noise via Gaussian Processes with Applications to True Random Number Generators
Orateur : Maciej Skorski - Laboratoire Hubert Curien
The talk examines power noise modelling through Gaussian Processes for secure True Random Number Generators. While revisiting one-sided fractional Brownian motion, we obtain novel contributions by quantifying posterior uncertainty in exact analytical form, establishing quasi-stationary properties, and developing rigorous time-frequency analysis. These results are applied to model oscillator[…]-
Cryptography
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TRNG
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CryptoVerif: a computationally-sound security protocol verifier
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
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