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An encryption algorithm for color images based on an improved dual-chaotic system combined with DNA encoding.

Rongbin Li^1,2, Tingting Liu^1,2, Jun Yin^3,4

¹The College of Computer, Qinghai Normal University, Xining, 810016, China.

Scientific Reports

|September 5, 2024

Summary

This study introduces a novel dual chaotic system for secure image encryption. The proposed algorithm offers robust security, high-quality reconstruction, and efficient performance for demanding applications.

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Area of Science:

Computer Science
Cryptography
Information Security

Background:

Traditional image encryption methods face challenges in balancing security and efficiency.
Chaotic systems offer unique properties suitable for complex encryption algorithms.

Purpose of the Study:

To develop a secure and efficient image encryption algorithm using a novel dual chaotic system.
To enhance image security through a multi-stage encryption process involving key generation, DNA encoding, and permutation.

Main Methods:

Improved Logistic chaotic system combined with a hyperchaotic Chen system to create a dual chaotic system.
Three-stage encryption: plaintext-related key generation, dynamic DNA encoding, and chaotic sequence-based permutation.
Security analysis to evaluate robustness against known attacks.

Main Results:

The dual chaotic system provides complex and unpredictable chaotic sequences.
The encryption algorithm demonstrates high security, resisting various attacks.
Fast encryption speed and high-quality image reconstruction are achieved.

Conclusions:

The proposed dual chaotic system-based image encryption algorithm is robust, secure, and efficient.
It is well-suited for applications requiring high performance and image quality.
The method offers a promising solution for secure image transmission and storage.