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Fast and Secure Image Encryption Algorithm with Simultaneous Shuffling and Diffusion Based on a Time-Delayed

Yulin Shen1, Jun Huang2, Lingling Chen3

  • 1Gansu Computing Center, Lanzhou 730030, China.

Entropy (Basel, Switzerland)
|May 27, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a novel time-delayed nonlinear combinatorial hyperchaotic map (TD-NCHM) for enhanced image encryption. The proposed algorithm offers superior security and efficiency for secure communication systems.

Keywords:
fast image-encryption algorithmsimultaneous shuffling and diffusiontime-delayed hyperchaotic map

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Area of Science:

  • Nonlinear Dynamics and Chaos Theory
  • Cryptography and Information Security
  • Applied Mathematics

Background:

  • Time delays in nonlinear systems can enhance performance and security.
  • Existing image encryption methods may lack sufficient security or efficiency.
  • Hyperchaotic systems offer complex dynamics suitable for encryption.

Purpose of the Study:

  • To propose a novel time-delayed nonlinear combinatorial hyperchaotic map (TD-NCHM).
  • To develop a fast and secure image encryption algorithm based on TD-NCHM.
  • To evaluate the algorithm's efficiency, security, and practical value.

Main Methods:

  • Development of a time-delayed nonlinear combinatorial hyperchaotic map (TD-NCHM) with a wide hyperchaotic interval.
  • Design of a plaintext-sensitive key-generation method.
  • Implementation of a simultaneous row-column shuffling-diffusion encryption process.

Main Results:

  • The proposed TD-NCHM exhibits a wide hyperchaotic interval.
  • The developed image encryption algorithm demonstrates high efficiency and security.
  • Experimental results confirm the algorithm's superiority over existing methods.

Conclusions:

  • The TD-NCHM is a promising tool for constructing secure image encryption algorithms.
  • The proposed encryption algorithm offers significant advantages in terms of speed and security.
  • The algorithm has practical value for secure communication applications.