A parallel image encryption algorithm based on the piecewise linear chaotic map and hyper-chaotic map

作者：Luo, Yuling; Zhou, Ronglong; Liu, Junxiu^*; Cao, Yi; Ding, Xuemei

来源：Nonlinear Dynamics, 2018, 93(3): 1165-1181.

DOI：10.1007/s11071-018-4251-9

• Image security
• Chaotic encryption
• Parallel encryption
• GPU
• Security analysis

This paper proposes a parallel digital image encryption algorithm based on a piecewise linear chaotic map (PWLCM) and a four-dimensional hyper-chaotic map (FDHCM). Firstly, two decimals are obtained based on the plain-image and external keys, using a novel parallel quantification method. They are used as the initial value and control parameter for the PWLCM. Then, an encryption matrix and four chaotic sequences are constructed using the PWLCM and FDHCM, which control the permutation and diffusion processes. The proposed algorithm is implemented and tested in parallel based on a graphics processing unit device. Numerical analysis and experimental results show that the proposed algorithm achieves a high encryption speed and a good security performance, which provides a potential solution for real-time image encryption applications.

• 出版日期2018-8
• 单位福建师范大学; 广西师范大学