One-Dimensional Quadratic Chaotic System and Splicing Model for Image Encryption

Author:

Chen Chen1,Zhu Donglin2,Wang Xiao3,Zeng Lijun1

Affiliation:

1. Nanhang Jincheng College, Nanjing 211156, China

2. College of Mathematics and Computer Science, Zhejiang Normal University, Jinhua 321004, China

3. Xingzhi College, Zhejiang Normal University, Jinhua 321000, China

Abstract

Digital image transmission plays a very significant role in information transmission, so it is very important to protect the security of image transmission. Based on the analysis of existing image encryption algorithms, this article proposes a new digital image encryption algorithm based on the splicing model and 1D secondary chaotic system. Step one is the algorithm of this article divides the plain image into four sub-parts by using quaternary coding, and these four sub-parts can be coded separately. Only by acquiring all the sub-parts at one time can the attacker recover the useful plain image. Therefore, the algorithm has high security. Additionally, the image encryption scheme in this article used a 1D quadratic chaotic system, which makes the key space big enough to resist exhaustive attacks. The experimental data show that the image encryption algorithm has high security and a good encryption effect.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering

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