Secure Steganography in JPEG Images Based on Histogram Modification and Hyper Chaotic System

1. Introduction

The security in communication is important. Especially in the modern times, more and more information has been transmitted on the Internet. However, the Internet is insecure due to its original design in the transfer protocols. Therefore, it is of vital importance to guarantee the safety of private and secret information in the Internet Era. Various methods have been proposed ever since ancient times to ensure the secure communication. Encryption and steganography are two of the most important strategies, generally. The encryption strategy makes original information meaningless, which may arouse invaders’ attention. Therefore, it is easier detected and even, decrypted. The steganography (Marvel, Boncelet & Retter, 1999) strategy hides the secure information into a cover media, while only the intended receiver is aware of the existence of the hidden information. Therefore, nobody perceives the invisible information, and without the keys, nobody can extract this information. It offers better invisibility and security.