  Steganography is the art of hiding the fact that communication is taking
place, by hiding information in other information. Different types of carrier
file formats can be used, but digital images are the most popular ones because
of their frequency on the internet. For hiding secret information in images,
there exists a large variety of steganography techniques. Some are more complex
than others and all of them have respective strong and weak points. Many
applications may require absolute invisibility of the secret information. This
paper intends to give an overview of image steganography, it's usage and
techniques, basically, to store the confidential information within images such
as details of working strategy, secret missions, criminal and confidential
information in various organizations that work for the national security such
as army, police, FBI, secret service etc. We develop a desktop application that
incorporates Advanced Encryption Standard for encryption of the original
message, and Spatially Desynchronized Steganography Algorithm for hiding the
text file inside the image.
