arXiv:2608.08924cs.CVcs.CR2026-08中稿 · the IEEE Internati…

将人脸秘密分享的噪声图像转为美观载体并防篡改,提升隐私与安全。

From Noise to Meaning: Meaningful Secret Sharing with Tamper Detection for Facial Recognition

论文配图:From Noise to Meaning: Meaningful Secret Sharing with Tamper Detection for Facial Recognition
图 1 · 摘自论文原文
  • 用自适应隐写术将秘密分块嵌入视觉自然的载体图中
  • 在多个公开数据集上保持高人脸识别准确率,且抵御比特翻转等攻击
  • 适合需要保护人脸数据隐私与完整性的机构使用

基于AI的人脸识别系统普及,亟需保护训练所用敏感生物特征数据。视觉秘密共享虽能将人脸图像拆分为看似随机的分片并分发至多机构,但其噪声外观易引发怀疑,被识别为加密内容而遭针对性收集,存在‘现采集、后解密’攻击风险。此外,传统方法缺乏篡改检测能力,攻击者可修改分片威胁重建完整性。本文提出新方法,将令人困惑的噪声分片转化为视觉自然的载体图像,并引入双重认证机制:强数字水印与密码哈希,实现对分片完整性的有效保护。该技术采用自适应最低有效位隐写术嵌入秘密分片,结合感知透明载体,在保障完全隐私的同时消除分片显眼性。大量实验表明,该方法在多个公开人脸数据集上维持较高人脸识别准确率,且显著抵抗比特翻转、裁剪和替换攻击。该框架为保护人脸数据在隐私、安全与完整性方面树立了新标准。

原文摘要 · Abstract (English)

Popularity of AI-based face recognition system directly demands protection of sensitive biometric data used for training. Visual secret sharing is an interesting idea, as it splits facial images into secret shares that look random and spread across many institutions. However, these shares look like noise and can easily spark suspicion and recognized as encrypted content. This makes them open to targeted collection and harvest-now-decrypt-later attacks. Additionally, visual secret sharing does not detect tampering, allowing attackers to modify shares and threaten the integrity of reconstruction. In this paper, we introduce a new method that turns distracting noise-like secret shares into visually appealing cover images with additional cryptographic tamper detection. The proposed technique works with visual secret sharing and introduces cover images to embed the shares using adaptive least significant bit steganography. Here, cover images with perceptual transparency are used to store secret shares while guaranteeing complete privacy. A two layer authentication using strong digital watermarking and cryptographic hashing is used to protect the integrity of shares. The proposed technique shows high resilience in stopping bit-flipping, cropping, and substitution attacks. Extensive experiments on multiple public face datasets show that the technique shows better FR accuracy, while eliminating share conspicuousness and guaranteeing integrity. The proposed framework sets a new standard for protecting facial data in such a way that privacy, security, and integrity are protected.

秘密共享人脸隐私防篡改隐写术

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