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On security threats for robust perceptual hashing

Bas, Patrick
Cayre, Francois
Published in Proceedings of SPIE Photonics West, Electronic Imaging / Media Forensics and Security XI. San Jose (USA) - Jan. 18 - SPIE. 2009
Collection SPIE Proceedings; 7254
Abstract Perceptual hashing has to deal with the constraints of robustness, accuracy and security. After modeling the process of hash extraction and the properties involved in this process, two different security threats are studied, namely the disclosure of the secret feature space and the tampering of the hash. Two different approaches for performing robust hashing are presented: Random-Based Hash (RBH) where the security is achieved using a random projection matrix and Content-Based Hash (CBH) were the security relies on the difficulty to tamper the hash. As for digital watermarking, different security setups are also devised: the Batch Hash Attack, the Group Hash Attack, the Unique Hash Attack and the Sensitivity Attack. A theoretical analysis of the information leakage in the context of Random-Based Hash is proposed. Finally, practical attacks are presented: (1) Minor Component Analysis is used to estimate the secret projection of Random-Based Hashes and (2) Salient point tampering is used to tamper the hash of Content-Based Hashes systems.
Keywords WatermarkingDigital watermarkingMatricesModeling
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Research groups Computer Vision and Multimedia Laboratory
Stochastic Information Processing Group
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KOVAL, Oleksiy et al. On security threats for robust perceptual hashing. In: Proceedings of SPIE Photonics West, Electronic Imaging / Media Forensics and Security XI. San Jose (USA). [s.l.] : SPIE, 2009. (SPIE Proceedings; 7254) doi: 10.1117/12.807487 https://archive-ouverte.unige.ch/unige:47667

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Deposited on : 2015-03-06

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