用可编程掩膜实现加密与认证，防伪能力超AES-256。
Encryption and Authentication with a Lensless Camera Based on a Programmable Mask
- 用可动态变化的液晶掩膜替代固定掩膜，提升安全性。
- 实验显示系统密钥长度超2500比特，抗攻击能力强。
- 掩膜指纹可用于图像认证，防深伪伪造。
无透镜相机用薄掩膜代替传统光学元件，产生高度复用的测量数据，类似加密效果。但传统静态掩膜易受简单攻击。本文利用可编程掩膜动态改变模式，增强安全性。实验基于成本约100美元的液晶显示屏系统，结果表明可变掩膜有效抵御多种攻击，同时保障合法用户高质量图像恢复。系统加密强度超过AES-256，有效密钥长度超过2500比特。此外，每个掩膜模式在图像上留下唯一指纹，实现鲁棒认证。结合有透镜系统时，无透镜测量可作为模拟证书，提供验证图像真实性的新方案，对抗深度伪造。
原文摘要 · Abstract (English)
Lensless cameras replace traditional optics with thin masks, leading to highly multiplexed measurements akin to encryption. However, static masks in conventional designs leave systems vulnerable to simple attacks. This work explores the use of programmable masks to enhance security by dynamically varying the mask patterns. We perform our experiments with a low-cost system (around 100 USD) based on a liquid crystal display. Experimental results demonstrate that variable masks successfully block a variety of attacks while enabling high-quality recovery for legitimate users. The system's encryption strength exceeds AES-256, achieving effective key lengths over 2'500 bits. Additionally, we demonstrate how a programmable mask enables robust authentication and verification, as each mask pattern leaves a unique fingerprint on the image. When combined with a lensed system, lensless measurements can serve as analog certificates, providing a novel solution for verifying image authenticity and combating deepfakes.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。