An efficient image encryption scheme using gray code based permutation approach

作者：Chen, Jun-xin; Zhu, Zhi-liang^*; Fu, Chong; Yu, Hai; Zhang, Li-bo

来源：Optics and Lasers in Engineering, 2015, 67: 191-204.

DOI：10.1016/j.optlaseng.2014.11.017

• Image encryption
• Gray code
• Permutation
• Pixel-related diffusion

In recent years, the operation efficiency of chaos-based image cryptosystems has drawn much more concerns. However, the workload arised from floating point arithmetic in chaotic map iteration prevents the efficiency promotion of these cryptosystems. In this paper, we present a novel image encryption scheme using Gray code based permutation approach. The new permutation strategy takes full advantage of (n, p, k)-Gray-code achievements, and is performed with high efficiency. A plain pixel-related image diffusion scheme is introduced to compose a complete cryptosystem. Simulations and extensive security analyses have been carried out and the results demonstrate the high security and operation efficiency of the proposed scheme.

• 出版日期2015-4
• 单位东北大学