A New DNA-Combining Chaos Scheme for Fast and Secure Image Encryption
This paper aims to introduce a new secured image encryption scheme base on Peace Wise Linear Chaotic Map (PWLCM) and DeoxyriboNucleic Acid (DNA) encoding. The first step is to increase the entropy of the original image by applying a dynamical XOR operation through all the pixels of the image. To satisfy security requirement inherent to an encryption algorithm, PWLCM random sequences are combined with DNA encoding rules, picked randomly among 8 rules available, in order to generate a DNA OTP-key used for encryption. The last step is to replace every pixel of the image with a randomly chosen index that corresponds to one index of occurrence of its DNA equivalent in the OTP-key following an S-BOX strategy. Experimental results show that this encryption algorithm is fast and efficient compared to existing solutions, but also secure to various types of attacks such as statistical attacks, differential attack or brute-force attacks.
KeywordsDNA sequence Chaos PWLCM Image encryption OTP S-Box
The work described in this paper was supported under the Postdoctoral Fellowships Program “Eugen Ionescu” funded by Romania government and managed by the “Agence Universitaire de la Francophonie (AUF)”.
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