Open AccessA new secure image encryption algorithm based on a 5D hyperchaotic map
Author(s) -
Dejian Fang,
Shuliang Sun
Publication year - 2020
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0242110
Subject(s) - encryption , key space , computer science , algorithm , randomness , pseudorandom number generator , entropy (arrow of time) , secure communication , image (mathematics) , security analysis , cryptography , clipping (morphology) , probabilistic encryption , theoretical computer science , mathematics , artificial intelligence , computer network , computer security , physics , linguistics , statistics , philosophy , quantum mechanics
Image encryption is an effective method for protecting private images during communication. In this paper, a novel image encryption method is proposed based on a 5D hyperchaotic system. Since a 5D hyperchaotic system can generate more complex dynamic behavior than a low-dimensional system, it is used in this paper to generate pseudorandom number sequences. The generated sequences are processed to obtain new sequences. The randomness of the new sequences is improved by recombination and rearrangement. The experimental results and theoretical analysis show that the method possesses a large key space and can resist differential attacks, statistical analysis, entropy analysis, clipping attacks and noise attacks. Therefore, it is very secure and can be used for secure communication.