A New Approach in Adaptive Encryption Algorithm for Color Images Based on DNA Sequence Operation and Hyper-Chaotic System

Abstract

The security requirements of digital images led to the development of effective encryption techniques. In this paper, the proposed approach includes the use of the DNA sequence and hyper-chaotic dynamics in adaptive encryption of color images. This method consists of two main steps: In the first step, the pixels logical arrangement is upset by using Arnold’s cat map. In the second step, the scrambled image is encrypted by using a combination of three methods, including the Chen’s hyper-chaotic system, DNA sequence, and proposed adaptive method, which play a significant role in the complexity of the proposed algorithm. The simulation and experimental results and security analysis indicated that the proposed algorithm not only produces a significant encryption effect, but is also capable of effectively resisting statistical and brute-force attacks.