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.
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