发表机构
Fraunhofer Portugal AICOS（弗劳恩霍费尔葡萄牙AICOS）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对电磁侧信道攻击中的帧率估计，利用显示分辨率先验知识将复杂度从O(N log N)降至O(N)，并在实验中保持准确性。
AI 中文摘要
帧刷新率估计是识别电磁侧信道攻击中谐波频率的关键步骤。基于离散线性自相关（DLA）的方法在不同场景下具有鲁棒性，对于包含N个样本的信号，其计算复杂度为O(N log N)。本文提出利用目标系统显示分辨率的先验知识，将该复杂度降低至O(N)，该先验知识适用于巴西电子投票机的某些型号。使用软件定义无线电的实验表明，在评估场景中，所提方法保持了传统方法的准确性。
英文摘要
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.
CommentsEnglish version of work originally published in Portuguese in the extended Proceedings of the XXVI Brazilian Symposium on Cybersecurity (SBSEG), 2026
Journal refin extended Proceedings of the XXVI Brazilian Symposium on Cibersecurity (SBSEG), 2026
DOI：10.5753/sbseg_estendido.2026.29811
