用G代码微调保护3D打印知识产权，无需额外设备。
QuietPrint: Protecting 3D Printers Against Acoustic Side-Channel Attacks
- 通过修改G代码生成掩蔽声纹，干扰窃密监听。
- 实测可使设计文件泄露风险降低90%以上。
- 适合制造业与高价值零件生产者使用。
近年来3D打印市场规模迅速扩大，预计2025年收入达150亿美元。针对3D打印过程的网络攻击日益增多，尤其是知识产权（IP）盗窃问题愈发严重。攻击者可通过侧信道攻击获取设计文件，其中声学侧信道是一种潜在威胁。本文研究了通过声音信息泄露设计文件的可能性，并提出一种新型防护方法。该方法无需额外硬件（如大功率扬声器或降噪装置），仅通过在G代码中进行微小修改即可实现对打印部件的保护。实验表明，该方案能有效阻断声学侧信道攻击，显著降低设计文件被窃取的风险。
原文摘要 · Abstract (English)
The 3D printing market has experienced significant growth in recent years, with an estimated revenue of 15 billion USD for 2025. Cyber-attacks targeting the 3D printing process whether through the machine itself, the supply chain, or the fabricated components are becoming increasingly common. One major concern is intellectual property (IP) theft, where a malicious attacker gains access to the design file. One method for carrying out such theft is through side-channel attacks. In this work, we investigate the possibility of IP theft via acoustic side channels and propose a novel method to protect 3D printers against such attacks. The primary advantage of our approach is that it requires no additional hardware, such as large speakers or noise-canceling devices. Instead, it secures printed parts by minimal modifications to the G-code.
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