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Prof. Kazuo Sakiyama

University of Electro-Communications, Tokyo, Japan

Title: Resilience of the Internet of Things from Physical Attack Perspective


To improve the IoT (Internet of Things) system’s resilience, we need to consider the security state’s circulation, transitioned by physical attacks on IoT devices, as the IoT ecosystem’s primary function. Cryptographic devices are at the threat of new physical attacks that appear one after another. Laser-based fault attacks are known to be one of the most serious physical attacks against cryptographic IC (Integrated Circuit). If the attacker’s ability becomes even higher, we must assume the probing attack that directly reads out intermediate values in IC. In this talk, we discuss a leakage sensor that helps measure the cryptographic key’s security state in the IoT device. In each layer of the cryptographic primitive, algorithm, and protocol, we aim to improve the resilience that recovers the IoT system lithely to the normal state even if partial key leakage occurs. We pick up a case study about a reactive distributed on-chip sensor for detecting the laser-based fault injection attack to cryptographic hardware.


Biography: Kazuo Sakiyama received the B.E. and M.E. degrees from Osaka University, Japan, in 1994 and 1996, respectively, the M.S. degree from the University of California at Los Angeles, USA, in 2003, and the PhD degree in electrical engineering from Katholieke Universiteit Leuven (KU Leuven), Belgium, in 2007. He is currently a Professor at The University of Electro-Communications (UEC), Tokyo, Japan. At UEC, he leads the hardware security research for embedded cryptosystem, cyber-physical system, and physical authentication. Before joining UEC in 2008, he was with Hitachi, Ltd., Tokyo (now Renesas Electronics) as a Digital Hardware Designer, and later at KU Leuven as a PhD Research Assistant. He has published 9 books and more than 100 international research papers in the field of hardware security.

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