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Research on Color Image Encryption Algorithm Based on Bit-Plane and Chen Chaotic System.

Jiangjian Xu1, Bing Zhao1, Zeming Wu1

  • 1Electronic Engineering College, Heilongjiang University, Harbin 150080, China.

Entropy (Basel, Switzerland)
|February 25, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel, low-complexity color image encryption algorithm using bit-planes and chaotic systems. The method enhances security and reduces operations for efficient, robust image protection.

Keywords:
Chen chaotic systembit planeimage encryptionlogistic chaotic system

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Area of Science:

  • Computer Science
  • Information Security
  • Applied Mathematics

Background:

  • Existing color image encryption algorithms often suffer from high complexity and excessive computational operations.
  • There is a need for efficient and secure methods for color image encryption.

Purpose of the Study:

  • To propose a low-complexity, low-operation color image encryption algorithm.
  • To enhance the security of color images through a combination of bit-plane manipulation and chaotic systems.
  • To ensure the encryption process is interrelated with plaintext information.

Main Methods:

  • Extraction of RGB image channels and representation of pixel gray values in 8-bit binary.
  • Bit-plane manipulation (exchanging higher and lower four bits) and scrambling using a logistic chaotic sequence.
  • Conversion to hexadecimal numbers to reduce computational complexity, followed by image position scrambling and pixel value permutation using Chen chaos sequence.
  • Synthesis of three-channel encrypted images from single-channel encrypted images.

Main Results:

  • MATLAB simulations demonstrate the algorithm's effectiveness.
  • Security analysis indicates a better encryption effect compared to existing methods.
  • The algorithm exhibits strong resistance to differential attacks.
  • Evaluations include histogram analysis, correlation, differential attack testing, and information entropy.

Conclusions:

  • The proposed algorithm offers a significant improvement in terms of complexity and operational efficiency for color image encryption.
  • The combination of bit-plane techniques and chaotic systems provides a robust security solution.
  • The method is effective and secure, suitable for practical applications requiring image protection.