The word steganography literally means “covered writing”. It is a combination of the Ancient Greek words “steganos” and “graphein” meaning covered, concealed, or protected and “writing” respectively (“Steganography”). Steganography is a strategy to secure the information by simply pushing information into information or information behind information. Numerous organizations or sorts of steganography are being utilized as a part of present day, for example, content, picture, sound/video and convention however computerized pictures are the most generally utilized in view of their recurrence on the web, for example, concealing/pushing privileged insights information parallel code because of which picture may somewhat be changed.
Despite the fact that steganography is a wide type of cryptography, steganography and cryptography contrast in their objectives. According to a paper written by Gary Kessler, an Associate Professor and program director of the Computer Networking major at Champlain College in Burlington, Vermont, “The goal of cryptography is to make data unreadable by a third party, the goal of steganography is to hide the data from a third party” (Kessler). Another article from the International Journal of Computer Applications asserts that “…cryptography is about concealing the content of the message. At the same time an encrypted data package is itself evidence of the existence of valuable information.
The most essential necessity of any steganographic framework is that it ought to be incomprehensible for a meddler to recognize normal questions and protests that contain mystery information" (xv). Basically, the distinction is that ordinarily in a cryptographic framework the outsider knows that information is being encoded and in most refined frameworks, the technique for encryption is publicly known or conveyed.
