An Improved Module Based Substitution Steganography Method

The rapid growth of the Internet and digitized content made text/image distribution simpler. The ability to protect and secure information is vital to the growth of electronic commerce and to the growth of the Internet itself. Most data embedding techniques used so far lead to distortions in the original image. These distortions create problems in some areas where protection of data is immensely required. Lossless data hiding is an exact restoration approach for recovering original data. In this paper, a scheme for data hiding is presented which is based on a module-based substitution method with lossless secret data compression with some improvements to reduce the difference between cover and stego image pixel values. This scheme is loss less scheme. In our scheme user can hide either text, image or wav file as secret data in cover image file.

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