An Improved Image Encryption Algorithm Based on a New Two-Dimensional Map

Abstract:

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The paper analyzes a symmetric image encryption scheme based on a new chaotic two-dimensional map. The map can encrypt image. The numbers of the left-map and the right-map are used as the secret keys of encryption. A diffusion mechanism was used to diffuse the pixels of image. But it isn’t enough safe. Firstly there are a lot of week keys and duplicate keys. Secondly the diffusion mechanism is too simple to ensure the information security. The paper designs a new method of keys generation. The keys are non-zero and random. It has a large keys space and avoids the duplicate keys. Then it takes parts of keys as the parameters of a classic chaotic map. The process is the new diffusion mechanism. It solves the problem of weak keys. Simulation results show the effectiveness of the method.

Info:

Periodical:

Edited by:

Yuhang Yang, Xilong Qu, Yiping Luo and Aimin Yang

Pages:

293-296

DOI:

10.4028/www.scientific.net/AMR.216.293

Citation:

F. Huang et al., "An Improved Image Encryption Algorithm Based on a New Two-Dimensional Map", Advanced Materials Research, Vol. 216, pp. 293-296, 2011

Online since:

March 2011

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$35.00

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