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Image Encryption Algorithm Based on Dynamic Rhombus Transformation and Digital Tube Model.

Xiaoqiang Zhang1, Yupeng Song1, Ke Huang1

  • 1School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China.

Entropy (Basel, Switzerland)
|August 28, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a novel image encryption algorithm using a dynamic rhombus transformation and digital tube model. The method enhances image security against various attacks, ensuring safe storage and transmission.

Keywords:
Manhattan distancechaotic systemdynamic diffusiondynamic rhombus transformationimage encryption

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Area of Science:

  • Computer Science
  • Cryptography
  • Information Security

Background:

  • Image data is vulnerable to security risks due to rapid information technology advancements.
  • Effective image encryption is crucial for secure storage and transmission of digital images.

Purpose of the Study:

  • To propose a novel image encryption algorithm for enhanced security.
  • To utilize a dynamic rhombus transformation and digital tube model for robust encryption.

Main Methods:

  • A two-dimensional hyper-chaotic system was constructed by combining Sine, Cubic, and May maps.
  • A dynamic rhombus transformation was employed for pixel scrambling, controlled by chaotic sequences.
  • A digital tube model was designed for pixel value diffusion using chaotic sequences and bitwise operations.

Main Results:

  • The hybrid chaotic map demonstrated superior chaotic characteristics.
  • The proposed algorithm achieved high information entropy (7.9993) and low correlation coefficients (horizontal: 0.0008, vertical: 0.0001, diagonal: 0.0005).
  • The algorithm showed strong resistance to noise, cropping, and exhaustive attacks.

Conclusions:

  • The developed image encryption algorithm effectively secures image data.
  • The combination of dynamic rhombus transformation and digital tube model provides robust protection against various security threats.