The desire to keep sensitive information and communications secret for many decades, and potential generations have been paramount. In this era of digital media and internet communications, the needs seem more pressing as lots of information and people’s conversations are been tracked, stolen, manipulated and pirated. Steganography is the art of hiding a message, a covert substance (stego) so that only the sender and the intended recipient know that there is a message contained in the substance or the stego. It can also be stated to be the fine art of hiding information. This means that hiding message in a carrier file enables the deniability of the existence of that message. This work provides an overview of steganography, designs software to illustrate specific steganography methods and recent developments in the field. The methodology used to develop this work was object-oriented analysis and design methodology (OOAD), and the programming language used is Java programming language which is based on classes and objects as it took care of compatibility over multiple operating systems. The work was done by embedding text file in a video frame (video file) in such a manner that the video file does not lose its functionality using Discrete Cosine Transform Method (DCTM). This method strives for high data security to a hacker’s inability to detect the existence of a hidden message or information.

Steganography Cryptography Steganalysis