Feb 04

Seminar: François-Xavier Standaert, “Towards Physically-Secure Implementations & the Need of Theory, Practice and Open Designs” (Feb 28, 2019)

Feb 28, 2019 – 13.00 – room P.2NO5 Solvay Room

Speaker: François-Xavier Standaert (UCL)

Title: “Towards Physically-Secure Implementations & the Need of Theory, Practice and Open Designs”

Abstract: In this talk, I will survey recent approaches/results to obtain physical security against side-channel attacks exploiting leakages, such as an implementation’s power consumption. After a brief introduction and motivation, I’ll describe how these attacks proceed (i.e., the so-called standard DPA setting) and why purely hardware-level (practical, heuristic) countermeasures alone cannot solve the problem. I will then discuss how the impact of hardware-level countermeasures can be amplified thanks an algorithmic-level countermeasure called masking, how this amplification can be formally analyzed, and the implementation challenges that physical defaults can imply for the secure implementation of masking. I will conclude by discussing the need of an open approach to physical security, and the interest of re-designing cryptographic algorithms and protocols for this purpose.