%A Feng HUANG, Yong FENG %T Security analysis of image encryption based on two-dimensional chaotic maps and improved algorithm %0 Journal Article %D 2009 %J Front. Electr. Electron. Eng. %J Frontiers of Electrical and Electronic Engineering %@ 2095-2732 %R 10.1007/s11460-009-0016-z %P 5-9 %V 4 %N 1 %U {https://journal.hep.com.cn/fee/EN/10.1007/s11460-009-0016-z %8 2009-03-05 %X
The article proposes a new algorithm to improve the security of image encryption based on two-dimensional chaotic maps. Chaotic maps are often used in encrypting images. However, the encryption has periodicity, no diffusion, and at the same time, the real keys space of encryption are fewer than the theoretical keys space, which consequently results in potential security problems. Thus, this article puts forward several ways to solve the problems including adding diffusion mechanism, changing the design of keys and developing a composite encryption system. It designs an algorithm for the version