Image Steganography and Steganalysis Based on Least Significant Bit (LSB)

摘要

The sending of encrypted messages attracts the attention of programmers and crackers who would seek to intercept and uncover the messages before arrive their intended destination. Steganography is one way to mask communication by hiding unrevealed message inside another unsuspecting message. Steganography can be combined with cryptography in order to offer a satisfactory measure of privacy and security. In this study, a new approach of the least significant bit steganography has been proposed which improves on the 1 byte least significance technique. A detail description of image steganography procedures based on Least Significant Bit (LSB) to reduce the possibility of a message being recognized is provided. It includes steganalysis - the techniques by which secret information is been extracted.