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Séminaire
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SemSecuElec
Lattice-based NIST candidates: abstractions and ninja tricks
Orateur : Thomas Prest
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.[…] -
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Séminaire
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SemSecuElec
Improved Blind Side-Channel Analysis by Exploitation of Joint Distributions of Leakages
Orateur : Léo Reynaud
Les attaques side channel classiques nécessitent généralement la connaissance du clair (ou du chiffré) afin de calculer des données internes qui seront comparées à des fuites. Des attaques permettent cependant de s’affranchir de ces connaissances, les attaques par distributions jointes. Ces attaques supposent un attaquant capable d’inverser le modèle de consommation, mais aucune connaissance sur[…] -
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Séminaire
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SemSecuElec
When Electromagnetic Signals Reveal Obfuscated Malware: Deep and Machine Learning Use cases
Orateur : Duy-Phuc Pham et Damien Marion
The Internet of Things (IoT) is constituted of devices that are expo-nentially growing in number and in complexity. They use plentiful customized firmware and hardware, ignoring potential security issues, which make them a perfect victim for cybercriminals, especially malware authors.We will describe a new usage of side channel information to identify threats that are targeting the device. Using[…] -
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Séminaire
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Cryptographie
New Representations of the AES Key Schedule
Orateur : Clara Pernot - INRIA Paris
In this talk we present a new representation of the AES key schedule, with some implications to the security of AES-based schemes. In particular, we show that the AES-128 key schedule can be split into four independent parallel computations operating on 32 bits chunks, up to linear transformation. Surprisingly, this property has not been described in the literature after more than 20 years of[…] -
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Séminaire
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Cryptographie
Fault tolerant algorithms via decoding: Interleaving techniques
Orateur : Eleonora Guerrini - Université Montpellier
Evaluation Interpolation algorithms are a key tool for the algebraic decoding of a large class of codes, including the famous Reed Solomon codes. Recent techniques allow the use of this type of decoding in the more general setting of fault tolerant algorithms, where one has to interpolate erroneous data (potentially computed by an untrusted entity). In this talk we will present algorithms to[…] -
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Séminaire
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Cryptographie
Soutenance de thèse: Algebraic Cryptanalysis of the Shortest Vector Problem in Ideal Lattices
Orateur : Olivier Bernard - Rennes
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