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Voice encryption using a unified hyper-chaotic system

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Abstract

A Chaos-based cryptosystem is a vital method to enhance information protection in communication systems. The previous works have addressed this topic either by using highly complicated algorithms that are difficult to apply in practice or have a few encryption keys. This paper presents a new, highly secure chaos-based secure communication system that combines a conventional cryptography algorithm with two levels of chaotic masking technique. Furthermore, to enhance the security level, we employ the characteristic of a unified hyper-chaotic system to generate three different types of attractors. A Simulink of the stated system is implemented using MATLAB SIMULINK (R2013) to transmit a voice signal. Several testing methods such as power spectral density, spectrogram, histogram analysis, key sensitivity, correlation coefficient, signal to noise ratio (SNR), Percent Residual Deviation (PRD) are carried out to evaluate the quality of the proposed algorithm in several domains, time, frequency, and statistics. The simulation and comparison results demonstrate the high efficiency of the suggested cryptosystem and robustness against various cryptographic attacks.

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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

  1. Department of Computer Engineering, University of Sharjah, Sharjah, United Arab Emirates

    Talal Bonny & Wafaa Al Nassan

  2. Department of Mechatronics Engineering, University of Turkish Aeronautical Association, Ankara, Turkey

    Abdullatif Baba

Authors
  1. Talal Bonny
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  2. Wafaa Al Nassan
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  3. Abdullatif Baba
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Bonny is the first and corresponding author. All authors built the system and performed the experiments. All authors read and approved the final manuscript.

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Correspondence to Talal Bonny.

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Bonny, T., Nassan, W.A. & Baba, A. Voice encryption using a unified hyper-chaotic system. Multimed Tools Appl 82, 1067–1085 (2023). https://doi.org/10.1007/s11042-022-13317-w

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  • DOI: https://doi.org/10.1007/s11042-022-13317-w

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