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arXiv · 2609.28916

Fast Frame Rate Estimation in Electromagnetic Side-Channel Attacks on Public Systems

Alyson Isaluski·Leonardo Teodoro·Kleber V. Cardoso·Antonio Oliveira-Jr·Saulo Queiroz
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Abstract

Frame refresh rate estimation is a fundamental step in identifying compromising harmonic frequencies in electromagnetic side-channel attacks. Methods based on discrete linear autocorrelation (DLA) are robust across different scenarios and require a computational complexity of $O(N\log N)$ for a signal containing $N$ samples. This work proposes reducing this complexity to $O(N)$ by exploiting prior knowledge of the target system's display resolution, as is available for certain models of the Brazilian electronic voting machine. Experiments using software-defined radios show that the proposed method preserves the accuracy of the conventional approach in the evaluated scenarios.

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Alyson Isaluski, Leonardo Teodoro, Kleber V. Cardoso, Antonio Oliveira-Jr, Saulo Queiroz. 2026-09-24. Fast Frame Rate Estimation in Electromagnetic Side-Channel Attacks on Public Systems. https://doi.org/10.5753/sbseg_estendido.2026.29811

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