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Color image encryption scheme based on alternate quantum walk and controlled Rubik's Cube
Jingbo Zhao1, Tian Zhang1, Jianwei Jiang1
1School of Information and Control Engineering, Qingdao University of Technology, Qingdao, 266000, China.
Scientific Reports
|August 22, 2022
Summary
This study introduces a novel color image encryption method using quantum random walks and Rubik's Cube transformations to secure digital images during transmission against tampering and interception.
Area of Science:
- Computer Science
- Cryptography
- Quantum Information Science
Background:
- Digital image transmission is vulnerable to interception and tampering.
- Existing encryption methods may lack robustness against sophisticated attacks.
Purpose of the Study:
- To propose a secure and robust color image encryption scheme.
- To enhance the security of digital image transmission.
Main Methods:
- Separating color images into R, G, B channels.
- Generating random sequences using alternate quantum random walk.
- Employing controlled Rubik's Cube transformations for image scrambling.
- Bitwise XORing scrambled images with random sequences for encryption.
Main Results:
- Achieved high information entropy (7.999).
- Demonstrated high NPCR (99.5978%) and UACI (33.4317%).
- The scheme exhibits theoretical infinite key space.
Conclusions:
- The proposed encryption scheme offers excellent security and robustness.
- It is effective against statistical, brute-force, and differential attacks.
- The method provides a reliable solution for secure digital image transmission.
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