Abstract
Digital watermarking has been widely used in digital rights management and copyright protection. In this paper, new cryptographic watermark schemes are proposed. Compare to the existing watermarking techniques, our proposed watermark schemes combine both security and efficiency that none of the existing schemes can do. We first develop an algorithm to randomly generate the watermark indices based on the discrete logarithm problem (DLP) and the Fermat’s little theorem. Then we embed watermark signal into the host image in both time domain and frequency domain at the indices. Our security analysis and simulation demonstrate that our proposed schemes can achieve excellent transparency and robustness under the major security attacks and common signal degradations. The novel approaches provided in this paper are ideal for general purpose commercial digital media copyright protection.
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Communicated by Lixin Shen and Yuesheng Xu.
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Ren, J. A cryptographic watermarking technique for multimedia signals. Adv Comput Math 31, 267–281 (2009). https://doi.org/10.1007/s10444-008-9096-1
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DOI: https://doi.org/10.1007/s10444-008-9096-1