A Secure Steganographic Scheme Based on Chaotic Map and DNA Computing

Abstract

This paper proposes a secure steganographic scheme based on DNA computation and chaos based on random bit generation. This scheme uses a cross-coupled chaotic map to generate random DNA sequences. DNA computing is used for encoding the secret message, and the encoded secret is embedded onto a cover image using well-known LSB substitution technique. This scheme is equally effective for hiding image as well as text. The secret message is converted to a DNA sequence, and another random DNA sequence is generated using a cross-coupled chaotic system. Now, the two DNA sequences are added using DNA addition. Then, the LSBs of the cover image pixels are substituted by the secret DNA sequence. The results of the experiment and security analysis show that the algorithm devised by us is effective and also can resist statistical and differential attack.