A Digital Image Watermarking Scheme using ElGamal Function 


Vol. 9,  No. 1, pp. 1-8, Feb.  2002
10.3745/KIPSTC.2002.9.1.1


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  Abstract

Digital image watermarking is a technique for the purpose of protecting the ownership of the image by embedding proprietary watermarks in a digital image. It is required for the digital image watermarking scheme to pursue the robustness against water marking attacks and the perceptual invisibility more than usual in steganography area, to guarantee not a hidden watermarking algorithm but the publicity of watermarking algorithm details and hidden use of key, which can protect the unauthorized user access from detection. In this paper we propose a new copyright watermarking scheme, which is based on one-way hash functions using ElGamal functions and modular operations. ElGamal functions are widely used in cryptographic systems. Our watermarking scheme is robust against LSB(least significant bit) attacks and gamma correction attack, and also perceptually invisible. We demonstrate the characteristics of our proposed watermarking scheme through experiments. It is necessary to proceed as the future work the algorithm of achieving at the same time both the pseudo-randomness for the stego-key generation and the asymmetric-key generation.

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[IEEE Style]

J. H. Lee and T. Y. Kim, "A Digital Image Watermarking Scheme using ElGamal Function," The KIPS Transactions:PartC, vol. 9, no. 1, pp. 1-8, 2002. DOI: 10.3745/KIPSTC.2002.9.1.1.

[ACM Style]

Jean Ho Lee and Tai Yun Kim. 2002. A Digital Image Watermarking Scheme using ElGamal Function. The KIPS Transactions:PartC, 9, 1, (2002), 1-8. DOI: 10.3745/KIPSTC.2002.9.1.1.

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