Collision-Based EM Analysis on ECDSA Hardware and a Countermeasure
Kosuke Koiwa, Rei Ueno, Daisuke Fujimoto, Yu‐ichi Hayashi, Makoto Nagata, Makoto Ikeda, Tsutomu Matsumoto, Naofumi Homma · 2019
This paper presents an EM analysis for extracting a signature generation key from ECDSA hardware. In particular, we presents a horizontal side-channel attack using EM waves radiated from compact ECDSA hardware based on Jacobian projective coordinates. The validity of the attack is demonstrated through an experiment using a prototype LSI. We also mention an efficient algorithm-level countermeasure against the attack.