A new image encryption method: parallel sub-image encryption with hyper chaos
- 1.3k Downloads
A new image encryption scheme, based on a total shuffling and parallel encryption algorithm is proposed in this paper. Two chaotic systems have been used in the encryption algorithm to confuse the relationship between the plain-image and the cipher-image. To make the encryption procedure more confusing and complex, the plain-image is first divided into 4 sub-images and then the position of each sub-image is changed pseudo-randomly according to a logistic map. Next, a total shuffling matrix is used to shuffle the position of pixels in the whole image and then sub-images are encrypted simultaneously in a parallel manner. The experimental results on USC data base demonstrate that the proposed encryption algorithm has a low time complexity and has the advantages of large key space and high security. Moreover, the robustness of this locally encryption method is much more in contrast with other encryption schemes and the distribution of gray values has a random-like behavior in the encrypted image.
KeywordsParallel image encryption Hyper chaos Image shuffling Image division
Unable to display preview. Download preview PDF.
- 1.Beldhouche, F., Qidwai, U.: Binary image encoding using ID chaotic map. In: Proceedings of the IEEE Annual Technical Conference, pp. 39–43 (2003) Google Scholar
- 11.Li, S., Zheng, X.: Cryptanalysis of a chaotic image encryption method. In: Proceedings of the IEEE International Conference on Circuits and Systems, vol. 2, pp. 708–711 (2002) Google Scholar
- 16.Zhou, Q., Wong, K.-w., Liao, X., Xiang, T., Hu, Y.: Parallel image encryption algorithm based on discretized chaotic map. Chaos Solitons Fractals 00, 1081–1092 (2007) Google Scholar
- 17.Schneier, B.: Applied Cryptography: Protocols, Algorithms, and Source Code in C, 2nd edn. Wiley, New York (1995) Google Scholar