
Proceedings Paper
Efficient non-interactive zero-knowledge watermark detector robust to sensitivity attacksFormat | Member Price | Non-Member Price |
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Paper Abstract
Zero-knowledge watermark detectors presented to date are based on a linear correlation between the asset features
and a given secret sequence. This detection function is susceptible of being attacked by sensitivity attacks, for
which zero-knowledge does not provide protection.
In this paper, an efficient zero-knowledge version of the Generalized Gaussian Maximum Likelihood (ML)
detector is introduced. The inherent robustness that this detector presents against sensitivity attacks, together
with the security provided by the zero-knowledge protocol that conceals the keys that could be used to remove
the watermark or to produce forged assets, results in a robust and secure protocol.
Two versions of the zero-knowledge detector are presented; the first one makes use of two new zero-knowledge
proofs for modulus and square root calculation; the second is an improved version applicable when the spreading
sequence is binary, and it has minimum communication complexity.
Completeness, soundness and zero-knowledge properties of the developed protocols are proved, and they are
compared with previous zero-knowledge watermark detection protocols in terms of receiver operating characteristic,
resistance to sensitivity attacks and communication complexity.
Paper Details
Date Published: 27 February 2007
PDF: 12 pages
Proc. SPIE 6505, Security, Steganography, and Watermarking of Multimedia Contents IX, 65050B (27 February 2007); doi: 10.1117/12.704171
Published in SPIE Proceedings Vol. 6505:
Security, Steganography, and Watermarking of Multimedia Contents IX
Edward J. Delp III; Ping Wah Wong, Editor(s)
PDF: 12 pages
Proc. SPIE 6505, Security, Steganography, and Watermarking of Multimedia Contents IX, 65050B (27 February 2007); doi: 10.1117/12.704171
Show Author Affiliations
Juan Ramón Troncoso, Univ. of Vigo (Spain)
Fernando Pérez-González, Univ. of Vigo (Spain)
Published in SPIE Proceedings Vol. 6505:
Security, Steganography, and Watermarking of Multimedia Contents IX
Edward J. Delp III; Ping Wah Wong, Editor(s)
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