A new chaotic algorithm for image encryption

Haojiang Gao, Yisheng Zhang, Shuyun Liang and Dequn Li

Chaos, Solitons & Fractals, 2006, vol. 29, issue 2, 393-399

Abstract: Recent researches of image encryption algorithms have been increasingly based on chaotic systems, but the drawbacks of small key space and weak security in one-dimensional chaotic cryptosystems are obvious. This paper presents a new nonlinear chaotic algorithm (NCA) which uses power function and tangent function instead of linear function. Its structural parameters are obtained by experimental analysis. And an image encryption algorithm in a one-time-one-password system is designed. The experimental results demonstrate that the image encryption algorithm based on NCA shows advantages of large key space and high-level security, while maintaining acceptable efficiency. Compared with some general encryption algorithms such as DES, the encryption algorithm is more secure.

Date: 2006
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Citations: View citations in EconPapers (16)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:29:y:2006:i:2:p:393-399

DOI: 10.1016/j.chaos.2005.08.110

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