Open AccessColour image encryption based on logistic mapping and double random‐phase encoding
Author(s) -
Huang Huiqing,
Yang Shouzhi
Publication year - 2017
Publication title -
iet image processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.401
H-Index - 45
eISSN - 1751-9667
pISSN - 1751-9659
DOI - 10.1049/iet-ipr.2016.0552
Subject(s) - encryption , encoding (memory) , image (mathematics) , computer science , logistic map , artificial intelligence , key (lock) , phase (matter) , key space , pattern recognition (psychology) , computer vision , mathematics , algorithm , computer security , chemistry , organic chemistry
In this study, the authors propose a novel method to encrypt a colour image by use of Logistic mapping and double random‐phase encoding. Firstly, use Logistic mapping to diffuse the colour image, then the red, green and blue components of the result are scrambled by replacement matrices generated by Logistic mapping. Secondly, by utilising double random‐phase encoding to encrypt the three scrambled images into one encrypted image. Experiment results reveal the fact that the proposed method not only can achieve good encryption result, but also that the key space is large enough to resist against common attack.