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A 1D coupled hyperbolic tangent chaotic map with delay and its application to password generation

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Abstract

This paper proposes a new one-dimensional chaotic map. The map consists of a coupling between two hyperbolic tangent terms, where the second term is delayed, to avoid dynamical degradation. The map is studied through computation of its bifurcation diagrams and Lyapunov exponent diagrams and is shown to have constant chaotic behavior for almost all parameter values. Afterward, based on the proposed map, a pseudo-random bit generator with a high keyspace is designed. This generator is then used as a basis for a proposed password generator application. The motivation behind this application is to design an algorithm that takes as input an easy-to-remember key by the user and outputs a secure password that can be used for websites or file security. This way, the use of easy-to-crack, repetitive passwords is avoided. The proposed generator is developed as a graphical user interface.

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Data Availability

The designed Matlab GUI is available from the corresponding author upon request.

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Acknowledgements

The authors are thankful to the anonymous reviewers for their helpful comments.

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Authors and Affiliations

  1. Laboratory of Nonlinear Systems - Circuits, Complexity, Physics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece

    Ioannis Kafetzis, Lazaros Moysis & Christos Volos

  2. Youth Research Institute, Saint-Petersburg Electrotechnical University ‘LETI’, 5, Professora Popova St., 197376, Saint Petersburg, Russia

    Aleksandra Tutueva & Denis Butusov

  3. Section of Electronic Physics and Systems, Department of Physics, National and Kapodistrian University of Athens, Athens, 15784, Greece

    Hector Nistazakis

Authors
  1. Ioannis Kafetzis
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  2. Lazaros Moysis
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  4. Denis Butusov
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  6. Christos Volos
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Correspondence to Lazaros Moysis.

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Kafetzis, I., Moysis, L., Tutueva, A. et al. A 1D coupled hyperbolic tangent chaotic map with delay and its application to password generation. Multimed Tools Appl 82, 9303–9322 (2023). https://doi.org/10.1007/s11042-022-13657-7

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  • DOI: https://doi.org/10.1007/s11042-022-13657-7

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