A novel image encryption scheme based on substitution-permutation network and chaos

作者：Belazi, Akram; Abd El-Latif, Ahmed A.^*; Belghith, Safya

来源：Signal Processing, 2016, 128: 155-170.

DOI：10.1016/j.sigpro.2016.03.021

• Image encryption
• S-box
• Permutation-substitution (SP) network
• Chaotic systems

In this paper, a novel image encryption approach based on permutation-substitution (SP) network and chaotic systems is proposed. It consists of four cryptographic phases: diffusion, substitution, diffusion and permutation. Firstly, a diffusion phase is proposed based on new chaotic map. Then, a substitution phase based on strong S-boxes followed by a diffusion phase based on chaotic logistic map are presented which will, in turn, significantly increase the encryption performance. Finally, a block permutation phase is accomplished by a permutation function to enhance the statistical performance of the proposed encryption approach. Conducted experiments based on various types

• 出版日期2016-11