An Improved Chaotic Cryptosystem Based on Circular Bit Shift and XOR Operations
A type of chaotic encryption scheme by combining circular bit shift with XOR operations was proposed in 2006 based on iterating chaotic maps.Soon after the proposal, it was cryptanalyzed and improved.Unfortunately, there are still two drawbacks in the two improved schemes.To strengthen the performance of the focused type of scheme, a new improved scheme based on Chen”s chaotic system is proposed in this paper.Simulation results and theoretical analysis show that our improved scheme is immune to information extracting by chosen plaintext attack and has expected cryptographic properties.
Chaos Chaotic cryptosystem Image encryption Chen”s chaotic system
Shu-Jiang Xu Xiu-Bo Chen Ru Zhang Yi-Xian Yang Yu-Cui Guo
Information Security Center,Beijing University of Posts and Telecommunications,Beijing 100876,China; Information Security Center,Beijing University of Posts and Telecommunications,Beijing 100876,China; Information Security Center,Beijing University of Posts and Telecommunications,Beijing 100876,China School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China
国内会议
成都
英文
276-288
2013-10-01(万方平台首次上网日期,不代表论文的发表时间)