Reverse-engineering a detector with false alarms

Scott Craver; Jun Yu

doi:10.1117/12.704389

27 February 2007 Reverse-engineering a detector with false alarms

Scott Craver, Jun Yu

Proceedings Volume 6505, Security, Steganography, and Watermarking of Multimedia Contents IX; 65050C (2007) https://doi.org/10.1117/12.704389
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

Abstract

Inspired by results from the Break Our Watermarking System (BOWS) contest, we explored techniques to reverse-engineer watermarking algorithms via oracle attacks. We exploit a principle called "superrobustness," which allows a watermarking algorithm to be characterized by its resistance to specific distortions. The generic application of this principle to an oracle attack seeks to find a severe false alarm, or a point on the watermark detection region as far as possible from the watermarked image. For specific types of detection regions, these severe false positives can leak information about the feature space as well as detector parameters. We explore the specific case of detectors using normalized correlation, or correlation coefficient.

Citation Download Citation

Scott Craver and Jun Yu "Reverse-engineering a detector with false alarms", Proc. SPIE 6505, Security, Steganography, and Watermarking of Multimedia Contents IX, 65050C (27 February 2007); https://doi.org/10.1117/12.704389

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