Abstract
To ensure the security and privacy of digital image when its transmitting online or storing in the cloud, we proposed a novel chaos based image encryption scheme by using randomly DNA encode and plaintext related permutation. In our scheme, we first randomly encode plain image into a nucleotide sequence under the control by the piecewise linear chaotic map(PWLCM). After that, the plaintext related permutation would be done under the control sequence which generated by hyper chaotic Lorenz system (HCLS). Next, we make diffusion processing with key DNA sequence which is generated by another PWLCM system and also encoded randomly. Finally, we decode DNA sequence into cipher image matrix. In addition, we used many common security analysis methods to test our scheme, and the result compared with other works. The tests and comparison results are shown that our proposed image cryptosystem has excellent security performance to ensure the digital image security on communication.
Highlights
With the popularity of smart phones, digital images are becoming one of the most important data formats in our daily life, and it is easier to get than in the old days
There are two types of chaotic systems used in our image cryptosystem: the piecewise linear chaotic map (PWLCM) and the hyper chaotic Lorenz system (HCLS)
To ensure the security and privacy of digital images, we proposed a novel chaos based image encryption scheme with randomly
Summary
With the popularity of smart phones, digital images are becoming one of the most important data formats in our daily life, and it is easier to get than in the old days. Proposed an image encryption scheme using DNA computing and hash function This scheme related plaintext by hash function to make image cryptosystem has enough sensitivity to resist differential attack. Babaei et al [21] proposed a DNA computing based image encryption scheme using cellular automata This scheme is cleverly designed but real security key only the initial value of logistic map, that it is hard to resist brute force attack. To overcome the shortage mentioned above, we proposed a novel chaos-based image encryption scheme by using randomly DNA encode and plaintext related permutation. The main contribution of this paper is that we designed a reversible plaintext related permutation algorithm that the information of plain image can directly calculated in the decryption part without transmitting from the encryption part.
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