Image steganography using AES encryption and least significant nibble

This paper describes a steganography technique in which text is concealed in an image. The lower nibble of each image byte is modified so as to contain each nibble of the input text. The steganography algorithm used in this implementation maximises on data capacity and also ensures security. The Java programming language is used for its comprehensive libraries and ease of use. A simple GUI has been developed using Java's AWT and SWING packages. The AES encryption algorithm is also used to further enhance the security of the scheme.