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Real-time image encryption using a low-complexity discrete 3D dual chaotic cipher

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Abstract

In this paper, an algorithm is proposed for real-time image encryption. This scheme employs a dual chaotic generator based on a three-dimensional discrete Lorenz attractor. Encryption is achieved using non-autonomous modulation where the image data are injected into the dynamics of a master chaotic generator. The second generator is used to permute the dynamics of the master generator using the same approach. Since the image data can be regarded as a random source, the resulting permutations of the generator dynamics greatly increase the security of the encrypted signal. In addition, a technique is proposed to mitigate the error propagation due to the finite precision arithmetic of digital hardware. In particular, truncation and rounding errors are eliminated by employing an integer representation of the image data which can easily be implemented. The simple hardware architecture of the algorithm makes it suitable for secure real-time applications.

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Authors and Affiliations

  1. University of Victoria, Victoria, BC, Canada

    Mohamed F. Haroun & T. Aaron Gulliver

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  1. Mohamed F. Haroun
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  2. T. Aaron Gulliver
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Correspondence to Mohamed F. Haroun.

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Haroun, M.F., Gulliver, T.A. Real-time image encryption using a low-complexity discrete 3D dual chaotic cipher. Nonlinear Dyn 82, 1523–1535 (2015). https://doi.org/10.1007/s11071-015-2258-z

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  • DOI: https://doi.org/10.1007/s11071-015-2258-z

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