An analysis of LSB based image steganography techniques

Steganography refers to information or a file that has been concealed inside a digital picture, video or audio file. If a person views the object in which the information is hidden inside, he or she will have no indication that there is any hidden information. So the person will not try to decrypt the information. Steganography can be divided into Text Steganography, Image Steganography, Audio/Video Steganography. Image Steganography is one of the common methods used for hiding the information in the cover image. LSB is very efficient algorithm used to embed the information in a cover file. This paper presents the detail knowledge about the LSB based image steganography and its applications to various file formats. In this paper we also analyze the available image based steganography along with cryptography technique to achieve security.