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Legalization and protection of data are the primary nuts and bolts in present day communication systems. Data authentication in image processing is achieved by watermarking and encryption techniques. Nonetheless, whatever be the technique of watermarking, one of the vital factors to be considered is robustness. In this paper, we have proposed an algorithm for image security comprising watermarking in spatial domain along with encryption. At the resource, hidden image (secret image) is encoded within another image i.e. cover image by the pixel merging technique for watermarking. Secondly, the watermarked image is encrypted using blowfish encryption. The secret image is finally decoded at the receiving end. Robustness is also checked by extracting the secret image perfectly without any degradation in the quality of original image.

Image Security with Integrated Watermarking and Encryption