High Security Cryptographic Technique Using Steganography and Chaotic Image Encryption

This paper proposes a novel cryptographic technique that exploits the advantages of two important techniques - steganography and chaotic image encryption. Steganography is the technique of hiding the message within a cover media. Once the message is embedded within the cover image, it is encrypted using triple-key chaotic image encryption. So altogether this method provides a four-layer security to the original message. Various analyses were done and the results of the experiments are very encouraging and in future, this method can be extended to support media other than images. Keywords - Cryptography, Colour Image, Steganography, Encryption, Chaotic logistic map.