Abstract
Due to exponential technological advancement, secure transmission of multimedia content is a serious challenge. These days, securing and hiding digital information most efficiently is the focus of the digital computer world. Information confidentiality and information hiding namely steganography, are the most promising techniques that can protect digital information. In this paper, a combination of encryption and steganography is used efficiently to have a double level of security to achieve confidentiality, privacy, secrecy in addition to integrity and authentication. Firstly, encryption parameters are set by using a chaotic Lorenz system (CLS), then by using CLS encryption parameter encryption is performed on the secret image. This enciphered confidential digital medium is inserted in the cover image by using the least significant bits (LSBs) steganographic scheme. Due to the double level of security, it is hard for an eavesdropper to attack the proposed scheme. All experimental and simulation results verify the efficiency of the proposed information hiding scheme.