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An efficient image encryption algorithm with improved image security has been developed by using chaotic function, deoxyribonucleic acid (DNA) sequencing and genetic algorithm (GA). A chaotic sequence of desired length is generated by using the logistic map function whose initial value is calculated using the secret key. A number of DNA masks are generated and these masks along with the chaotic sequences...
A reversible data hiding (RDH) algorithm with improved security, which can reacquire the cover in separable manner from the marked stego-image is presented in this paper. In the content owner side cover image is encrypted by deploying user-defined security key derived-chaotic based transposition algorithm. Then the data hider conceals secret data into the encrypted image by perturbing its histogram,...
A novel reversible data hiding algorithm with improved security, which can recover the original image in separable manner without any distortion from the marked image after the hidden data have been extracted, is presented in this paper. In the content owner side image is encrypted by key derived chaotic based transposition algorithm. The data hider then hides some data into the encrypted image by...
A Composite algorithm for improved image security is proposed by taking the advantages of DNA based image encryption and evolutionary algorithms (EA). A number of deoxyribonucleic acid (DNA) masks are created using logistic map function and DNA conversion rules. Then encryption is performed on the plain image to generate a number of cipher images. Finally, genetic algorithm (GA) is applied to find...
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