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Séminaire
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Cryptographie
Improved Classical and Quantum Algorithms for Subset-Sum
Orateur : André Schrottenloher - INRIA
We present new classical and quantum algorithms for solving random hard instances of the subset-sum problem, in which we are given n integers on n bits and try to find a subset of them that sums to a given target. This classical NP-complete problem has several applications in cryptography and underlies the security of some proposed post-quantum cryptosystems.<br/> At EUROCRYPT 2010, Howgrave[…] -
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Séminaire
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Cryptographie
Workshop mise en oeuvre de la cryptographie post-quantique
Orateur : European CyberWeek - Rennes
L'inscription est gratuite mais obligatoire, en particulier pour des raisons de jauges. Le nombre de places est limité. Le programme est disponible à l'adresse <a href="https://www.european-cyber-week.eu/cryptographie-post-quantique">https://www.european-cyber-week.eu/cryptographie-post-quantique</a><br/> -
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Séminaire
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Cryptographie
Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2
Orateur : Mathy Vanhoef - KU-Leuven
We introduce key reinstallation attacks (KRACKs). These attacks abuse features of a protocol to reinstall an already in-use key, thereby resetting nonces and/or replay counters associated to this key. We show that our novel attack technique breaks several handshakes that are used in a WPA2-protected network.<br/> All protected Wi-Fi networks use the 4-way handshake to generate fresh session keys.[…] -
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Séminaire
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Cryptographie
Designing and deploying post-quantum cryptography
Orateur : Jean-Philippe Aumasson - Teserakt AG
I will review the hash-based signature submitted to the NIST competition jointly with Guillaume Endignoux, discussing its assurance level and performance. Then I will discuss the challenges of deploying post-quantum cryptography in an end-to-end encryption product for machine-to-machine communications.<br/> lien: http://desktop.visio.renater.fr/scopia?ID=721783***6864&autojoin -
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Séminaire
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Cryptographie
Cryptography based on rank metric codes
Orateur : 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[…] -
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Séminaire
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Cryptographie
On the design and implementation of scalar multiplication algorithms
Orateur : Koray Karabina - Florida Atlantic University
Diffie-Hellman type key exchange protocols and standardized digital signature algorithms all benefit from efficient design and secure implementation of group exponentiation algorithms. This talk will focus on elliptic curve groups and scalar multiplication algorithms derived from differential addition chains. First, I will give a survey of algorithms, and then I will present some recent[…] -