Subject Review: Information Steganography Based on Different Methods

Abstract

Today, huge amounts of information are transmitted over the communication networks, especially via the Internet. Therefore, many individuals are concerned with data security. Various methods were appeared to maintain data security, and the most common of these methods are cryptography. Encryption methods are exposed to many attacks, and if the attacker obtains the key, the data is decrypted, so many algorithms have emerged to hide the information within the multimedia. When the attacker gets the data, he will not suspect that this multimedia may contain other information. Data security may depend on the type of hiding algorithm used and sometimes encryption is used in conjunction with hiding to increase data security. The major aim of this work is reviewing and describing many approaches utilized for hiding data within multimedia and to create a comparison of these methods.