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Quantum Image Encryption Scheme Using Arnold Transform and S-box Scrambling.

Hui Liu1, Bo Zhao1, Linquan Huang2

  • 1Key Laboratory Aerospace Information Security and Trusted Computing, Ministry of Education, School of Cyber Science and Engineering, Wuhan University, Wuhan 430072, China.

Entropy (Basel, Switzerland)
|December 3, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a secure quantum image encryption method using S-box scrambling and Arnold transform. The novel approach ensures high security and fast computation for digital images.

Keywords:
Arnold transformS-box scramblingSHA-256 hashmutation operationquantum chaotic map

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Area of Science:

  • Quantum Information Science
  • Cryptography
  • Image Processing

Background:

  • Traditional image encryption methods face challenges with security and efficiency.
  • Quantum mechanics offers novel approaches for enhanced cryptographic security.
  • Developing robust quantum image encryption is crucial for secure digital communication.

Purpose of the Study:

  • To propose a novel lossless quantum image encryption scheme.
  • To enhance image security through a combination of quantum chaotic maps and scrambling techniques.
  • To achieve high computational efficiency and a large key space.

Main Methods:

  • Utilizing SHA-256 hash for key generation with plain-image and random sequence.
  • Implementing a permutation and gray-level encryption architecture with discrete Arnold map and quantum chaotic map.
  • Employing substitution tables (S-box) scrambling and mutation operations for enhanced randomness and complexity.

Main Results:

  • The proposed scheme achieves a uniform histogram and low correlation coefficients for the cipher-image.
  • High information entropy (close to 8) and a key space of 2^256 were demonstrated.
  • Fast computational efficiency (11.920875 Mbit/s) was achieved.

Conclusions:

  • The developed quantum image encryption scheme offers strong resistance against various attacks.
  • The integration of quantum chaotic maps, S-box scrambling, and Arnold transform provides a high level of security.
  • The scheme is suitable for secure and efficient quantum image processing applications.