Implementation of Image Steganography in Image by using FMM nested with LSB Substitution

Abstract

Steganography allows intended recipients to communicate secretly, where steganography is a technique of hiding secret information inside an appropriate multimedia carrier e.g. Image, Audio, and Video files. In today’s era data information available electronically, so these information can be transmitted over wireless communication. The data information can leak from the medium if it is not secured. So, the main goal of steganography is to communicate very securely. In this paper image steganography has been used where a secret image hide into an image called cover image and both images get embedded by using two techniques. The first technique called Five Modulus Method (FMM) and second is LSB substitution method. Both these techniques applied on images separately while embedding the secret image into cover image. In embedding process, secret image is horizontally divided into two equal parts. The first upper half part embedded by applying FMM algorithm and second lower part of secret image embedded through LSB substitution. A private stego-key also used when both images embedded with the five modulus method, which makes detection of secret image from cover image more difficult for any intended recipients. The visual quality of both the embedded image and extracted image is good that has been proven by getting higher PSNR and lesser MSE value.