Scalar multiplication kP is a critical operation in Elliptic Curve Cryptosystems (ECC), often targeted by Side-Channel Analysis (SCA). Despite strategies based on atomic patterns to enhance security, the binary kP algorithms remain susceptible to simple SCA due to energy consumption variations in field multipliers during passing two different or two identical operands. This vulnerability arises independent of the multiplication method used. We implemented and analysed two mitigation techniques: one involving data redirection and another focusing on bus reloading.
@article{arxiv.2604.26536,
title = {Preventing Distinguishability between Multiplication and Squaring Operations},
author = {Alkistis Aikaterini Sigourou and Zoya Dyka and Peter Langendoerfer and Ievgen Kabin},
journal= {arXiv preprint arXiv:2604.26536},
year = {2026}
}
Comments
presented at the 4th Workshop on Nano Security (at the Design, Automation and Test in Europe Conference 2026)