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A Novel Image Encryption Scheme Based on Intertwining Chaotic Maps and RC4 Stream Cipher

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3D Research

Abstract

As the systems are enabling us to transmit large chunks of data, both in the form of texts and images, there is a need to explore algorithms which can provide a higher security without increasing the time complexity significantly. This paper proposes an image encryption scheme which uses intertwining chaotic maps and RC4 stream cipher to encrypt/decrypt the images. The scheme employs chaotic map for the confusion stage and for generation of key for the RC4 cipher. The RC4 cipher uses this key to generate random sequences which are used to implement an efficient diffusion process. The algorithm is implemented in MATLAB-2016b and various performance metrics are used to evaluate its efficacy. The proposed scheme provides highly scrambled encrypted images and can resist statistical, differential and brute-force search attacks. The peak signal-to-noise ratio values are quite similar to other schemes, the entropy values are close to ideal. In addition, the scheme is very much practical since having lowest time complexity then its counterparts.

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Authors and Affiliations

  1. Department of Electronics Engineering, YMCA University of Science and Technology, Faridabad, India

    Manju Kumari & Shailender Gupta

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  1. Manju Kumari
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  2. Shailender Gupta
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Correspondence to Manju Kumari.

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Kumari, M., Gupta, S. A Novel Image Encryption Scheme Based on Intertwining Chaotic Maps and RC4 Stream Cipher. 3D Res 9, 10 (2018). https://doi.org/10.1007/s13319-018-0162-2

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