A fast chaos-based image encryption scheme with a novel plain image-related swapping block permutation and block diffusion

作者：Chai, Xiuli^*; Gan, Zhihua; Zhang, Miaohui

来源：Multimedia Tools and Applications, 2017, 76(14): 15561-15585.

DOI：10.1007/s11042-016-3858-4

• Diffusion method within the block image (DMWBI)
• Diffusion method between two block images (DMBTBI)
• Image encryption
• Block permutation
• Block diffusion
• Chaos

In the paper, a fast image encryption scheme with block permutation and block diffusion is introduced. Considering the increasing size of the image, encryption process is manipulated by block, and the encryption of every block image consists of block permutation and block diffusion. A novel plain image-related swapping block permutation strategy is presented, the swapping operation of the block image is controlled by the random chaotic sequences, and the initial value and parameter of the chaotic system are produced by SHA 256 hash value of the plain image, thus our algorithm is highly sensitive to changes of the plain image. Diffusion method within the block image (DMWBI) and diffusion method between two block images (DMBTBI) are presented to effectively eliminate the correlation of adjacent pixels in the plain image. The correlated chaos is employed to enhance the relationship of chaos, and take fully use of chaotic maps. One-dimensional Logistic-Sine System (LSS) is used to generate pseudo-random sequences during the whole encryption process. Experiment results and security analysis have proved the proposed image encryption algorithm is secure and effective.

• 出版日期2017-7
• 单位河南大学