Mandoria, H.L.Hemani2018-08-202018-08-202017-07http://krishikosh.egranth.ac.in/handle/1/5810065893Image Watermarking always plays a vital role as far as security of copyright protection is concern. It's getting popularity because of its trending application and tremendous benefits to the society. High level of embedding capacity is a must for image watermarking. And creating a secure channel is just sound like conceptual thing. This thesis is basically divided into three major parts firstly, we will generated a watermarked image using DCT-DWT-SVD technique, at next stage we will encrypt the watermarked image using the public key of Diffie-Hellman and RSA algorithm and at last but not the least we will decrypt the watermarked image using secret key of Diffie-Hellman and RSA algorithm and then, extract the watermark using the inverse procedure. Using the hybrid method in proposed scheme gives the advantage of its robustness against most common attacks. Experimental results and analysis show higher performance in comparison with RSA Algorithm. We have used MATLAB tools for our execution part.ennullThesis