Message Concealment in Digital Image based on Steganography

Abstract

With the development of computer and expanding its use in different areas of life and work, the issue of information security has become increasingly important. The art of sending and displaying the hidden information has received more attention and faced many challenges. Digital steganography exploits the use of a host data to hide a piece of information in such a way that it is imperceptible to a human observer. Wavelet transform that map integers to integers allow perfect reconstruction of the original image. In this paper, the steganography techniques are used to conceal the message in the digital images. Hence, this system embeds the message bitstream into the LSB's of the integer wavelet coefficients of a true-color image. And this system also applies the RSA algorithm to get more authentication and protecting content owner’s right. In this proposed system, the original and stegoimages are difficult to segregate by the human eyes. The performance of the proposed system is evaluated using the peak signal to noise ratio (PSNR).