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A novel audio encryption approach via finite-time synchronization of fractional order hyperchaotic system

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Abstract

Synchronization of 4-D nonlinear fractional order hyperchaotic system with external disturbance is important models for encryption and decryption technique. In this paper, the fractional order 0 < α ≤ 1 is consider to establish finite-time control for synchronization of sender and receiver system. An audio encryption and decryption algorithms are investigated based on converting an audio data samples into image data. A random mask generated from chaotic mask is used to encrypt and decrypt the audio signals. The path of error system of fractional order hyperchaotic system is shown to be highly better than the classical one. Further, high level security of the proposed work is entrusted or assured by analyzing various metrics including MSE, PSNR, SSIM, NPCR and SNR along with numerical simulations.

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Acknowledgments

This work is partially supported by University Grants Commission-Special Assistance Programme (Department of Special Assistance-I), New Delhi, India, File No. F. 510/7/DSA-1/2015 (SAP-I) and partially supported by NFSC, UGC, New Delhi, File No. 82-1/2018 (SA-III), UGC-Ref. No.: 4071/(CSIR-UGC NET JUNE 2018).

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Authors and Affiliations

  1. Department of Mathematics, The Gandhigram Rural Institute (Deemed to be University), Gandhigram, Dindigul, Tamil Nadu, 624 302, India

    N. Ramesh Babu & P. Balasubramaniam

  2. Institute of Mathematical Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia

    M. Kalpana

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  1. N. Ramesh Babu
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  2. M. Kalpana
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  3. P. Balasubramaniam
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Correspondence to P. Balasubramaniam.

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Babu, N.R., Kalpana, M. & Balasubramaniam, P. A novel audio encryption approach via finite-time synchronization of fractional order hyperchaotic system. Multimed Tools Appl 80, 18043–18067 (2021). https://doi.org/10.1007/s11042-020-10288-8

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