An Image Encryption Scheme Using Bit-planes Pair Exchange Permutation and Diffusion
Ruisong Ye, Li Liu, Ming Ye, Xiaoyun Shi, Wenhao Ye · Advances in engineering research/Advances in Engineering Research · 2015
An image encryption scheme using permutation-diffusion mechanism is proposed.The permutation is performed by exchanging the gray values at different bit-planes pair.The diffusion is executed over the shuffled image after permutation.One round of permutation and one round of diffusion achieve perfect security effect.In the permutation process, the generalized Arnold map is applied to disorder pixel positions and exchange the gray values of corresponding pixels at bit-planes pair.Multimodal skew tent map is utilized to generate pseudo-random gray value sequence applied at the diffusion process.The security and performance of the proposed scheme have been analyzed as well.