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Low Energy, a New Trend for Lightweight Cryptography

Title: “Low Energy, a New Trend for Lightweight Cryptography”

Speaker: Dr. Francesco Regazzoni, ALaRI Institute of Università della Svizzera italiana, Lugano, Switzerland

Date and Time:  Wednesday, February 1, 2017 at 11:00 a.m.

Location: DBH 4011

Host: Prof. Nikil Dutt

Abstract: In the last decade, several lightweight block ciphers and hash functions have been proposed. One of the metrics, so far largely unexplored, which has to be used to identify a good lightweight design is the energy consumed per unit operation of the algorithm. For block ciphers, this operation is the encryption of one plaintext.

This talk will address several approaches for reducing the energy consumption of existing block ciphers, touching the design space of the AES algorithm, to which few algorithmic optimizations are applied.

The gained experience lead to the design of Midori, the first block cipher designed to optimize the energy consumed per bit in encryption or decryption operation. Each component of the circuit, as well as its entire architecture of the cipher, have been optimized for energy, and design choices leading to low energy consumption in an electrical circuit were taken. Achieved results demonstrate that the energy consumption of Midori64 and Midori128 is much lower that current stateof the art.

Biography: Dr. Francesco Regazzoni is a senior researcher at the the ALaRI Institute of Universita’ della Svizzera italiana (Lugano, Switzerland). He received his Master of Science degree from Politecnico di Milano and his PhD degree at the ALaRI Institute of Universita’ della Svizzera italiana. He has been assistant researcher at the Université Catholique de Louvain and at Technical University of Delft, and visiting researcher at several institutions, including NEC Labs America, Ruhr University of Bochum, EPFL, and NTU Singapore. His research interests are mainly focused on embedded systems security, covering in particular side channel attacks, electronic design automation for security, hardware Trojans, low energy cryptography, and post quantum security. He has published more than 70 journal and conference papers in the area of security and design automation, and has been in the technical program committed of top conferences of the area. Francesco is the principal investigator and project leader at Universita’ della Svizzera italiana of the projects (SAFECrypto, exploring lattice-based constructions as building blocks for quantum resistant cryptography), and CERBERO (design tools for Cyber-Physical Systems).

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