REAL TIME IMAGE STEGANOGRAPHY USING DNA TECHNIQUE

Abstract

The development of a new image encryption algorithm using real structures of deoxyribonucleic acid (DNA) molecules is considered. In the proposed algorithm, the encryption process is performed by confusing and rearranging the pixels of the image based on the coordinates of the chaotic points obtained by the chaos game of DNA symbols, the sequence of DNA symbols, and the encoding rule. The selection of a specific DNA sequence from the databank and the determination of the encoding rule for DNA symbols are based on the secret key. Security plays a vital role in our communication system through internet. Using encryption method, the plain text is converted to cipher text using our proposed secret key and similarly using inverse key we can decrypt the original text. In this algorithm, we read a string, then extract each of the single characters from the string and convert these characters to ASCII equivalent value. Apply proposed secret key, along with ASCII value and appropriate encryption algorithm we encrypt the text. Similarly, using the inverse key along with appropriate decryption algorithm we can decrypt the original text.