Next Article in Journal
Representation Lost: The Case for a Relational Interpretation of Quantum Mechanics
Next Article in Special Issue
Uncertainty Assessment of Hyperspectral Image Classification: Deep Learning vs. Random Forest
Previous Article in Journal
Revealing the Work Cost of Generalized Thermal Baths
Previous Article in Special Issue
A Novel Multi-Exposure Image Fusion Method Based on Adaptive Patch Structure
Open AccessArticle

An Image Encryption Algorithm Based on Time-Delay and Random Insertion

Faculty of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang 524088, China
*
Author to whom correspondence should be addressed.
Entropy 2018, 20(12), 974; https://doi.org/10.3390/e20120974
Received: 19 November 2018 / Revised: 9 December 2018 / Accepted: 13 December 2018 / Published: 15 December 2018
(This article belongs to the Special Issue Entropy in Image Analysis)
An image encryption algorithm is presented in this paper based on a chaotic map. Different from traditional methods based on the permutation-diffusion structure, the keystream here depends on both secret keys and the pre-processed image. In particular, in the permutation stage, a middle parameter is designed to revise the outputs of the chaotic map, yielding a temporal delay phenomena. Then, diffusion operation is applied after a group of random numbers is inserted into the permuted image. Therefore, the gray distribution can be changed and is different from that of the plain-image. This insertion acts as a one-time pad. Moreover, the keystream for the diffusion operation is designed to be influenced by secret keys assigned in the permutation stage. As a result, the two stages are mixed together to strengthen entirety. Experimental tests also suggest that our algorithm, permutation– insertion–diffusion (PID), performs better when expecting secure communications for images. View Full-Text
Keywords: image encryption; time-delay; random insertion; information entropy; chaotic map image encryption; time-delay; random insertion; information entropy; chaotic map
Show Figures

Figure 1

MDPI and ACS Style

Huang, X.; Ye, G. An Image Encryption Algorithm Based on Time-Delay and Random Insertion. Entropy 2018, 20, 974. https://doi.org/10.3390/e20120974

AMA Style

Huang X, Ye G. An Image Encryption Algorithm Based on Time-Delay and Random Insertion. Entropy. 2018; 20(12):974. https://doi.org/10.3390/e20120974

Chicago/Turabian Style

Huang, Xiaoling; Ye, Guodong. 2018. "An Image Encryption Algorithm Based on Time-Delay and Random Insertion" Entropy 20, no. 12: 974. https://doi.org/10.3390/e20120974

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop