An image encryption algorithm based on the combination of low - dimensional chaos and high - dimensional chaos
Wan chun QIU, Shan Jun Yan · 2019 3rd International Conference on Electronic Information Technology and Computer Engineering (EITCE) · 2019
This paper proposes an image encryption algorithm based on the combination of low-dimensional chaos and highdimensional chaos. Some key parameters are given by the encryption operator and the rest are obtained from the original image. These two parts constitute the complete key system of the encryption algorithm. The chaotic sequences generated by Logistic map and improved Logistic map are used to scramble the positions of the original image pixels. Two chaotic sequences generated by Lorenz system are used to diffuse the scrambled image. Simulation experiment shows that this algorithm has great encryption effect, large key space and strong key sensitivity and can effectively resist various attacks. Thus, it has high security and practicability.