A DNA-Based Security solution Using Aggregated Chaos
Cross and Cubic Map
Zeeshan
Ahmad1, Hafiz Umar2, Chundong Li3 and Ling
Chen3
1School of Electronic
Engineering and Optoelectronic Technology Nanjing University of Science and
Technology, China
2Department of Computer
Science, Ghazi University, Pakistan
3College of Electronic and Information
Engineering, Southwest University,
Abstract: DNA,
cryptography and chaos, can be combined as a whole aggregated DNA, chaos-based
and cryptography Discrete Chaotic Cryptography (DCC) to encrypt and decrypt
data simultaneously. A new image encryption scheme based on chaotic system and
DNA encoding has been proposed in this paper. Firstly the image is permuted by
mixing the horizontally and vertically adjoint pixels with the help of cross
chaotic map. Afterwards, the permuted image is divided into least significant
bits (LSB) and most significant bits (MSB).
Each LSB and MSB is further divided into two blocks and encoded by DNA
sequence. The encoded blocks are combined and XOR operation is performed to get
a diffused image. Finally the diffused image is permuted by a cubic chaotic map
to accomplish the confusion phase and cypher image is obtained. Simulation
results show that the proposed scheme can achieve good encryption and also
provide resistance against different kind of attacks.
Keywords: Chaos Theory, DNA, Image Encryption, Cryptography.
Received June 17, 2014; accepted August 16, 2015