International Conference on Advanced Computing, Communication and Networks - CCN 2011
Author(s) : ASHISH OBEROI, JATINDER KUMAR
By using Steganography the existence of a message can be hide so that if it commonly perfomed successfully then found no suspicion at all. Using steganography, information can be hidden in such as images, audio files, text files, videos files and other means of data transmissions. The main idea for this is to use enough number of bits from each pixel in an image to map them to 26 alphabetic English characters (\'a\'…\'z\') and some special characters that are mostly using in writing a secret message. We know that in every image, there are pixels. Each pixel contains three bytes named as Red, Green and Blue(RGB) channel. The algorithm uses mapping method for data hiding and Pixel Indicator Technique for indication that data is hidden here. The basic concept is to convert secret message into ASCII ( American Standered Code of Information Interchange code. As ASCII code is a 7 bit code, so for matching bits every byte only 7 MSBs of each channel will be used and the LSB of all three channels are free to work as an indicator. The main goal of this method, is to hide a text of a secret message in the pixels of the image in such a way that the human eyes are not able to differentiate between the original and the Stego-image, but it can be easily performed by a specialized reader machine.