Algorithm for enhanced image security using DNA and genetic algorithm

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 are used to encrypt the digital image. Finally genetic algorithm is employed to get the best mask for encryption. The proposed method can resist various types of attacks and produce high entropy and very low correlation between pixels.

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