Crypto Seminar - João Ribeiro November 7, 2024 4:30pm — 5:30pm Location: In Person and Virtual - ET - Blelloch-Skees Conference Room, Gates Hillman 8115 and Zoom Speaker: JOÃO RIBEIRO, Assistant Professor, Departamento de Matemática, and , Instituto Superior Técnico, Universidade de Lisboa https://sites.google.com/site/joaorib94/ "Noisy" versus "Bounded" Leakage Physical implementations of cryptographic schemes are the target of “side-channel attacks”, which aim to extract some information about secret components (e.g., a secret key) by exploiting hardware quirks. This has given rise to the study of leakage-resilient cryptography, whose goal is to design cryptographic schemes that remain secure even when partial information about secret components is leaked to the adversary. There is, however, a mismatch between the theory and practice of leakage-resilient cryptography. Theoretical work on leakage-resilience usually focuses on the bounded leakage model, where the adversary is allowed to learn an arbitrary t-bit output function of the secret key, with t being a predefined threshold. On the other hand, real world side-channel attacks output very long transcripts that contain noisy information about the key. Ideally, we would like to say that every cryptographic scheme that is resilient to bounded leakage is also resilient to “noisy” leakage, for a useful definition of "noisy". In this talk, I will discuss recent work in this direction. This is based on joint work with Gianluca Brian, Antonio Faonio, Maciej Obremski, Lawrence Roy, Mark Simkin, Maciej Skórski, François-Xavier Standaert, and Daniele Venturi at Eurocrypt 2021 and CRYPTO 2024.In Person and Zoom Participation. See announcement. Event Website: https://sites.google.com/view/crypto-seminar/home Add event to Google Add event to iCal
