AN OVERVIEW OF DATA HIDING TECHNIQUE :- STEGANOGRAPHY

Steganography is the art of hiding information and an effort to conceal the existence of the embedded information. It serves as a better way of securing message than cryptography which only conceals the content of the message not the existence of the message. Original message is being hidden within a carrier such that the changes so occurred in the carrier are not observable. In this paper we will discuss how digital images can be used as a carrier to hide messages. . Steganography is a useful tool that allows covert transmission of information over an over the communications channel. Combining secret image with the carrier image gives the hidden image. This paper will take a look at this technology by introducing the reader to various concepts of Steganography, a brief difference between cryptography and ?Steganography and a look at how? Steganography works.