Abstract
An image encryption technique has been proposed using deoxyribonucleic acid (DNA) operations and chaotic map in this scheme. First, initial conditions of row encryption and column encryption are calculated. Then, a two-dimensional sine iterative chaotic map with infinite collapse (ICMIC) modulation map (2D-SIMM) is adopted to produce chaotic sequences. Extended exclusive OR (XOR) is executed to enhance security. A mask matrix is produced by 2D-SIMM. It performs XOR operation with the DNA-encoded matrix. Finally, the revised DNA-encoded matrix is performed two-by-two DNA complementary rules and executed DNA decoding to obtain the cipher image. Experiment results prove that the proposed scheme is secure enough and can resist various attacks.
Highlights
Many image encryption methods have been proposed
Chen et al.4 put forward an image encryption algorithm based on gray code
Liu et al.6 proposed a double image encryption method based on random pixel exchanging and phase encoding in gyrator domains
Summary
Many image encryption methods have been proposed. The diffusion and confusion operations that are proposed by Shannon in cryptography are used in image encryption. Chen et al. put forward an image encryption algorithm based on gray code The chaotic map is highly sensitive to initial values and system parameters, unpredictable, pseudorandom, and ergodic.5 It is very suitable for an image encryption system. Liu et al. proposed a double image encryption method based on random pixel exchanging and phase encoding in gyrator domains. Mao et al. presented a fast image encryption method, which was based on three-dimensional chaotic baker maps. Wang et al. presented an efficient image encryption scheme using a two-step phase-shifting interference method, in fractional Fourier transform and random mixed encoding. Zhen et al. presented an image encryption scheme based on chaotic sequence, DNA encoding, and entropy. Rehman et al. proposed a method that was based on chaos and DNA complementary rules for gray images.
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