Journal of Applied Sciences ›› 2024, Vol. 42 ›› Issue (3): 486-498.doi: 10.3969/j.issn.0255-8297.2024.03.010

• Digital Media Forensics and Security • Previous Articles     Next Articles

A Novel Black-Box Finger-Print Watermarking Algorithm for Deep Classification Neural Network

MO Mouke1, WANG Chuntao1,2,3,4, GUO Qingwen1, BIAN Shan1,2   

  1. 1. College of Mathematics and Informatics, South China Agricultural University, Guangzhou 510610, Guangdong, China;
    2. Key Laboratory of Smart Agricultural Technology in Tropical South China, Guangzhou 510610, Guangdong, China;
    3. Guangdong Key Laboratory of Agricultural Artificial Intelligence, Guangzhou 510610, Guangdong, China;
    4. Guangzhou Key Laboratory of Intelligent Agriculture, Guangzhou 510610, Guangdong, China
  • Received:2023-11-23 Published:2024-06-06

Abstract: This paper proposes a novel framework and method for strong robust blackbox classification model finger-print watermarking. First of all, we develop a method for constructing poisoned images with high visual quality and enhanced security based on digital watermarking technology. This method embeds user identity information into the poisoned image, enabling traceability of deep neural network models in multiuser scenarios and reducing the susceptibility of the poisoned image to forgery. Second, we introduce a poisoned feature enhancement module to optimize the training of the model. Finally, we design an adversary training strategy, which can effectively learn the finger-print watermark with minimal embedding strength and reduce the probability of forged poisoned images. Extensive simulation experiments show that the good invisibility of the fingerprint watermark in the poisoned image constructed by our method, superior to similar optimal model watermarking methods such as WaNet. More than 99% of the black-box model finger-print watermarking verification rate is obtained at the cost of no more than a 2.4% reduction in the classification performance. Even with a difference of just one bit in the finger-print watermark, accurate verification of the model watermarking by copyright is achieved. These performances are generally better than the best-in-class model watermarking methods, demonstrating the feasibility and effectiveness of our proposed method.

Key words: black-box model watermarking, classification models, poisoned images, fingerprint watermarking, robustness

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