In:
Electronics, MDPI AG, Vol. 9, No. 8 ( 2020-08-09), p. 1280-
Abstract:
In this paper, a novel image encryption scheme based on a fractional-order Henon chaotic map, a two-dimensional (2D) Discrete Wavelet Transform (DWT) and a four-dimensional (4D) hyperchaotic system is proposed. Firstly, the original image is transformed and scrambled by the 2D DWT, and then the image is shuffled with the fractional-order Henon chaotic time series. Finally, the shuffled image is diffused and encrypted by the 4D hyperchaos system. Through the application of DWT and high-low dimensional chaotic systems, the encryption effect of this algorithm is better than those done by single or ordinary chaotic encryption algorithm, and it has a larger key space and higher security. The experimental tests show that the system has good statistical characteristics, such as histogram analysis, correlation coefficient analysis, key space and key sensitivity, information entropy analysis and so on. The encryption algorithm also passes the relevant security attack tests with good security.
Type of Medium:
Online Resource
ISSN:
2079-9292
DOI:
10.3390/electronics9081280
Language:
English
Publisher:
MDPI AG
Publication Date:
2020
detail.hit.zdb_id:
2662127-7
