Reversible and Irreversible Data Hiding Technique
This addresses the need for secure and reversible data hiding in fields like multimedia, networks, medical, and military, but appears to be an incremental review or survey of existing techniques.
The paper discusses data hiding techniques, focusing on both irreversible and reversible methods for embedding secret messages in multimedia data, with the goal of enabling the original cover data to be recovered without distortion after extraction.
Steganography (literally meaning covered writing) is the art and science of embedding secret message into seemingly harmless message. Stenography is practice from olden days where in ancient Greece people used wooden blocks to inscribe secret data and cover the date with wax and write normal message on it. Today stenography is used in various field like multimedia, networks, medical, military etc. With increasing technology trends steganography is becoming more and more advanced where people not only interested on hiding messages in multimedia data (cover data) but also at the receiving end they are willing to obtain original cover data without any distortion after extracting secret message. This paper will discuss few irreversible data hiding techniques and also, some recently proposed reversible data hiding approach using images.