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    • Seminar

    • SoSysec

    A Universal Composability analysis of Android Protected Confirmation

    • January 17, 2025 (11:00 - 12:00)

    • Inria Center of the University of Rennes - - Room TBD

    Speaker : Maïwenn Racouchot - CISPA

    As phones are used for more and more sensitive operations (such as bank transfers for example), there is a great necessity to design and deploy protocols that can ensure the security of such transactions, even in cases when the phone has been compromised. In order to accomplish that, Android in collaboration with Google have worked on a protocol called Android Protected Confirmation. The idea[…]

    • SoSysec

    • Formal methods

    • Protocols

    • Seminar

    • Cryptography

    Updatable Encryption from Group Actions

    • January 24, 2025 (13:45 - 14:45)

    • IRMAR - Université de Rennes - Campus Beaulieu Bat. 22, RDC, Rennes - Amphi Lebesgue

    Speaker : Maxime Romeas - ANSSI

    Updatable Encryption is a variant of symmetric encryption that allows to rotate the encryption key in the outsourced storage setting while minimizing the bandwith used. Indeed, any third party can update ciphertexts to the new key using a token provided by the key holder. UE schemes aim at providing strong confidentiality guarantees against adversaries that can corrupt keys and tokens.  In this[…]

    • Seminar

    • SoSysec

    Approches humanitaires du risque numérique : accidents de sécurité et impératif de protection

    • January 10, 2025 (11:00 - 12:00)

    • Inria Center of the University of Rennes - - Room TBD

    Speaker : Laetitia Della Torre - Université de technologie de Compiègne

    Les ONG clament qu’elles ne sont pas des cibles (« not a target »), et plaident pour un arrêt des enlèvements d’humanitaires et des bombardements d’hôpitaux. Ajoutons que ce slogan est maintenant décliné dans une version « modernisée » : les ONG ne sont pas des cibles numériques (« not a digital target »). Ce slogan constitue un appel à stopper les cyberopérations contre les ONG, qui sont[…]

    • Risk management

    • SoSysec

    • Seminar

    • Cryptography

    Séminaire C2

    • January 17, 2025 (11:30 - 17:00)

    • Nancy

    11h30  Katharina Boudgoust (CR CNRS, LIRMM) : The Power of NAPs: Compressing OR-Proofs via Collision-Resistant HashingProofs of partial knowledge allow for proving the validity of t out of n different statements without revealing which ones those are. In this presentation, we describe a new approach for transforming certain proofs system into new ones that allows for proving partial knowledge. The[…]

    • Seminar

    • SoSysec

    Cherifying Linux: A Practical View on using CHERI

    • Every Friday at 11:00 a.m.

    • Inria Center of the University of Rennes - - Room TBD

    • Seminar

    • SemSecuElec

    Measurement the thermal component of clock jitter used as entropy source by TRNGs

    • February 28, 2025 (11:00 - 12:00)

    • Inria Center of the University of Rennes - - IRISA - Salle Aurigny (D165)

    Speaker : Arturo GARAY - STMicroelectronics

    Introduction Measuring the thermal component of clock jitter as an entropy source for True Random Number Generators (TRNGs) is compulsory for the security and evaluation of clock-jitter based TRNGs. However, identifying and isolating the local thermal noise component from other noise sources, particularly flicker noise, while performing a precise measurement remains a challenge. Current[…]

    • SemSecuElec

    • TRNG

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