A Novel Secure Digital Watermark Generation from Public Share by Using Visual Cryptography and MAC Techniques


Digital image watermarking is a technique in which a secret watermark is embedded into the original image to make an assertion about the image ownership and discouraging unauthorized copying. In this paper, a novel watermark was generated from public share using proposed visual cryptography scheme with Message Authentication Code (MAC) which is applied into a secret image (logo binary image). The proposed work was applied to provide the copyright protection and authentication of a digital image. Experimental results demonstrated that the proposed scheme has maintained the original pixel expansion, achieved a reduction of the watermark size, and allowed high security, high capacity, good feasibility, imperceptibility and robustness against several types of attacks.