A color image encryption with heterogeneous bit-permutation and correlated chaos

作者：Wang Xingyuan^*; Zhang Hui Li

来源：Optics Communications, 2015, 342: 51-60.

DOI：10.1016/j.optcom.2014.12.043

• Color image encryptions
• Color images
• Computation costs
• Heterogeneous bit-permutation
• Information amount
• One-Dimension
• Pseudorandom sequences
• XOR operation

In this paper, a novel color image encryption with heterogeneous bit-permutation and correlated chaos is proposed. Considering the difference of information amounts between bit-planes, the author employs heterogeneous bit-permutation to reduce computation cost and improve permutation efficiency, then performs expanded XOR operation for R, G, B components of color images, thus obtains cipher color images. The correlated chaos is introduced, which not only provides us a new way when making initialization for chaotic maps, but also takes fully use of chaotic maps. The architecture of permutation and diffusion is employed, and one-dimension WPLCW chaotic maps are used to generate pseudo-random sequences during the whole encryption process. The experiment results and analysis have proved the proposed color image encryption algorithm is secure and effective.

• 出版日期2015