A New Approach in Steganography using different Algorithms and Applying Randomization Concept

Abstract: In this paper, we have given an overview of the image steganography, its uses and techniques. We have proposed some new techniques of embedding a text message in an image in every odd, even, prime number memory location of image pixel values. We have also compared the actual and embedded images with histograms and computed the Mean Square Error(MSE) and Peak to Signal Noise Ratio (PSNR). We also compute the Structural SIMilarity (SSIM) index of all our images and make a comparative study. SSIM is a method for measuring the similarity between two images. It is an improved version of the universal image quality index proposed before. SSIM gives a much better indication of image quality.

Keywords: Cryptography, Steganography, DFT, DCT, DWT,SSIM