Use of image to secure text message with the help of LSB replacement

As the communication increases day by day the value for security over network also increases. There are many ways to hide information or transmission of information secretly. In this sense steganography is the best part of sending information secretly. This is the art of writing message or information in such a way that no one apart suitable recipient knows the meaning of the message or information. As there are many techniques to perform steganography on electronic media, most notably audio and image files. The out come of this paper is to generate a cross­platform that can effectively hide a message inside a digital image file. An image is the combination of several pixels and each pixel has three color numbers and an image consist of millions of numbers. So the change in few color numbers resulting the picture which would probably look a lot likes the original image. In this paper we are presenting the technique which works by changing a few pixel color value; we will use selected pixel value to represent characters instead of a color value. Obviously the resulting image will still look mostly like the original except that a few points seem little out of place if we look very closely.