.png){kind=icon}
.png){kind=icon}
Return
Multiple-Image Encryption Algorithm Based on a Chaotic System and a Block Spiral Transform
.png){kind=icon}
PRE
AI
DOI：10.1142/s0218127426501270.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Image encryption is crucial for ensuring the security of image data and protecting privacy. However, some existing image encryption algorithms have shortcomings in security and efficiency. To improve the security and efficiency of encryption, a new multiple-image encryption algorithm is proposed in this paper. The algorithm uses the hash of the original image and an external key to generate the initial value of the hyperchaotic map, which guarantees a larger key space and superior randomness. In the process of encryption, the input images are converted into pixel matrices by pixel recombination, and the pixel matrix is scrambled by intra-layer block scrambling and inter-layer block replacement. Then, three-dimensional dynamic diffusion of the scrambled pixel matrices is carried out to improve the encryption speed while ensuring security. Experimental results show that the proposed encryption algorithm can resist statistical attacks, brute-force attacks, chosen-plaintext attacks, cropping attacks and noise attacks. It is worth noting that the encryption time for 512 & times; 512 images is 0.3069sec, so the algorithm is efficient.
Keywords:
Image encryption
chaotic system
spiral transform
block scrambling
security analysis
multiple images
three-dimensional diffusion
Journal
I
IF:
2.3
Papers:
228
Citations:
8.5K