Chaotic Image Encryption Algorithm Based on Bit Permutation and Dynamic DNA Encoding.

ABSTRACT: With the help of the fact that chaos is sensitive to initial conditions and pseudorandomness, combined with the spatial configurations in the DNA molecule's inherent and unique information processing ability, a novel image encryption algorithm based on bit permutation and dynamic DNA encoding is proposed here. The algorithm first uses Keccak to calculate the hash value for a given DNA sequence as the initial value of a chaotic map; second, it uses a chaotic sequence to scramble the image pixel locations, and the butterfly network is used to implement the bit permutation. Then, the image is coded into a DNA matrix dynamic, and an algebraic operation is performed with the DNA sequence to realize the substitution of the pixels, which further improves the security of the encryption. Finally, t

SUBMITTER: Zhang X 

PROVIDER: S-EPMC5585654 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature