旁通道攻擊(Side Channel Attack, SCA)在資訊安全領域引起廣泛關注，這種攻擊利用物理實體層資訊洩露，而非直接破解金鑰或漏洞。研究領域已擴展至時間、功耗、電磁輻射等攻擊向量，可竊取敏感數據，尤其在嵌入式系統、智慧卡片、雲端及邊緣計算領域取得了重要突破。新的攻擊模型和對策不斷湧現，實際應用已延伸至加密、硬體安全和金融等領域。儘管帶來威脅，但也推動了更強大的解決方案，促使資訊安全領域的創新和進步。因此，此技術的研究對資訊安全未來具有影響，是一個引人注目且不斷發展的領域。
本論文的研究方法基於PicoScope 5000-PC示波器，用於對新唐(Nuvoton)公司的微控制器(Microcontroller Unit, MCU)進行資料電磁旁通道側錄訊號。為提高攻擊效能，利用有限脈衝響應濾波器對資料進行預處理，使資料可以對齊與降低雜訊。本文將深入探討有限脈衝響應濾波器參數設計及模型攻擊的成效。
實驗使用了高級加密標準演算法(Advanced Encryption Standard, AES)的不同金鑰(Key)長度和加密複雜性進行加密。在攻擊之前，對資料進行了必要的預處理，以提升攻擊效能。

Side Channel Attack (SCA) has garnered significant attention in the field of information security. This type of attack exploits the physical layer's information leakage rather than directly compromising keys or vulnerabilities. The research domain has expanded to include various attack vectors such as time, power consumption, electromagnetic radiation, enabling the extraction of sensitive data. Particularly, breakthroughs have been achieved in embedded systems, smart cards, cloud computing, and edge computing. New attack models and countermeasures continually emerge, and practical applications extend to encryption, hardware security, and financial sectors. Despite posing threats, SCA has also driven the development of robust solutions, fostering innovation and progress in the field of information security. Therefore, research on this technology is poised to have a lasting impact on the future of information security, making it a continually evolving and noteworthy area.
This paper's research methodology is based on the PicoScope 5000-PC oscilloscope, employed to perform electromagnetic side-channel eavesdropping on Nuvoton Corporation's microcontroller unit (MCU). To enhance attack efficiency, a finite impulse response (FIR) filter is utilized for preprocessing the data, aligning it, and reducing noise. The paper delves into the design of FIR filter parameters and assesses the effectiveness of model attacks.
Experiments were conducted using the Advanced Encryption Standard (AES) with different key lengths and encryption complexities. Prior to the attack, necessary preprocessing of the data was carried out to enhance attack efficiency.

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