The unique properties of chaotic maps have achieved more importance in data protection. The role of the initial parameters in generating the chaotic sequences is vital. In the proposed approach, a new modified perturbed logistic map is suggested. Image encryption is carried out in four steps. The chaotic sequences are attained using the proposed map at first. Secondly, permutation on the pixels of the image is handled by a modified zig zag transformation. Thirdly, permutation effect is further improved by dynamic quaternary DeoxyriboNucleic Acid (DNA) encoding and diffusion using DNA operations. Finally encryption is achieved by exercising DNA decoding. It can be observed from the experiment results of statistical analysis, differential attack analysis, Encryption Quality (EQ) analysis and performance analysis that the proposed scheme surpass existing schemes and can resist different attacks.

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