A DNA Based Image Steganography using 2D Chaotic Map

This paper presents a novel DNA based image steganography algorithm. DNA based security systems have drawn the attention of many researchers for more than a decade and lots of work have been done. Still it is in its evolutionary phase. The proposed work contributes to such a motive to improve the overall security of age old image steganography technique. It provides a two layer security to the secret data by wrapping it inside two layers of cover media, one being a theoretical DNA strand, and the other is a cover image. The DNA strand is constructed from the cover image using a 2D logistic map, thus having the attributes of the cover media. The process of hiding or embedding data inside the theoretical DNA strand requires degenerative genetic code replacement. The obtained mutated DNA is hidden back into the cover. Thus it supports dual layer hiding, making the system more reliable.