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Pixel-Level and DNA-Level Image Encryption Method Based on Five-Dimensional Hyperchaotic System.

Min Zhou¹, Xin Li¹, Wenqi Du¹

¹School of Computer Science and Artificial Intelligence, Civil Aviation Flight University of China, Guanghan 618307, China.

Entropy (Basel, Switzerland)

|December 24, 2025

Summary

This summary is machine-generated.

This study introduces PD5H, a novel image encryption method using a five-dimensional hyperchaotic system. It offers robust security for digital images against various attacks and data loss.

Keywords:

DNA sequence operations chaotic system image encryption intra-block diffusion joint diffusion security analysis

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Area of Science:

Information Security
Applied Cryptography
Digital Image Processing

Background:

Image encryption is crucial for securing sensitive visual data.
Existing methods face challenges in balancing security and efficiency.
Hyperchaotic systems offer potential for complex cryptographic applications.

Purpose of the Study:

To propose a novel image encryption method, PD5H, for enhanced information security.
To integrate pixel-level and DNA-level encryption using a five-dimensional hyperchaotic system.
To improve resistance against common cryptanalytic attacks and data loss.

Main Methods:

Development of a five-dimensional hyperchaotic system for generating complex chaotic sequences.
Implementation of a pixel-block internal diffusion method to reduce pixel correlation.
Integration of pixel-level and DNA-level encryption via a novel 'joint diffusion' process.

Main Results:

PD5H achieves a large key space and extremely low image correlation.
The method exhibits uniform ciphertext pixel distribution and high entropy (>7.999).
Demonstrated strong resistance to differential attacks and data loss.

Conclusions:

PD5H provides excellent performance for color image encryption.
The proposed method effectively resists various common security attacks.
PD5H enhances overall image information security through its unique encryption strategy.