Image Watermarking Using Diffie Hellman Key Exchange Algorithm

Abstract

AbstractDigital watermarking is the method of hiding or embedding any form of digital data in another multimedia data like image, audio, video, text, etc. The image to which another image is hidden is the cover image or original image and the hidden image is known as watermark. This paper proposes a block based image watermarking algorithm which uses cryptographic algorithm to find out the positions of the cover image in which the watermark is to be embedded. Two different keys are generated using Diffie Hellman Key Exchange algorithm and using these keys the positions of cover image to which the watermark bits are to be embedded are found out. Experimental results show that this method can withstand different geometrical attacks and is robust than other methods