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748 résultats
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Séminaire
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SoSysec
Should I trust or should I go? A deep dive into the (not so reliable) web PKI trust model
Orateur : Romain Laborde - University of Toulouse
The padlock shown in the URL bar of our favorite web browser indicates that we are connected using a secure HTTPS connection and providing some sense of security. Unfortunately, the reality is slightly more complex. The trust model of the underlying Web PKI is invalid, making TLS a colossus with feet of clay. In this talk, we will dive into the trust model of the web PKI ecosystem to understand[…]-
SoSysec
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Protocols
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Network
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Séminaire
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SoSysec
Hardware-Software Co-Designs for Microarchitectural Security
Orateur : Lesly-Ann Daniel - EURECOM
Microarchitectural optimizations, such as caches and speculative out-of-order execution, are essential for achieving high performance. However, these same mechanisms also open the door to attacks that can undermine software-enforced security policies. The current gold standard for defending against such attacks is the constant-time programming discipline, which prohibits secret-dependent control[…]-
SoSysec
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Hardware/software co-design
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Micro-architectural vulnerabilities
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Séminaire
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SoSysec
Vers l’émergence d’un droit européen pour la Blockchain : Une approche sous l’angle de la Privacy et de l’encadrement des crypto-actifs
Orateur : Damien Franchi - Univ Rennes, IODE
La Blockchain, technologie derrière Bitcoin, fait l’objet d’un encadrement juridique de plusen plus important, en particulier de la part de l’Union européenne. Curieusement, le mot« Blockchain » n’apparaît pas dans les textes l’encadrant. Les expressions « technologie deregistres distribués » (Distributed ledger technology, DLT), ou, parfois, « registreélectronique » lui sont plutôt privilégiées.[…]-
SoSysec
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Law
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Séminaire
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SoSysec
Blockchain and digital currencies: between European regulation and technological challenges
Orateur : Loïc Miller - CentraleSupélec
As the European Union develops a legal framework for crypto-assets and data protection, the technological question underlying the emergence of a genuine digital currency remains open. Blockchain today stands as an interdisciplinary field of study at the crossroads of computer science, economics, and law. This presentation will place the ongoing regulatory framework in perspective with the[…]-
SoSysec
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Distributed systems
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CREACH LABS partenaire de la European Cyber Week 2025
Nous serons présents à la 10ème édition de la European Cyber Week 2025! Retrouvez-nous les 19 au 20 novembre 2025 au couvent des Jacobins à Rennes.30 septembre 2025 -
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Séminaire
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Cryptographie
Algorithms for post-quantum commutative group actions
Orateur : Marc Houben - Inria Bordeaux
At the historical foundation of isogeny-based cryptography lies a scheme known as CRS; a key exchange protocol based on class group actions on elliptic curves. Along with more efficient variants, such as CSIDH, this framework has emerged as a powerful building block for the construction of advanced post-quantum cryptographic primitives. Unfortunately, all protocols in this line of work are[…] -