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Related Concept Videos

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Related Experiment Video

Updated: Nov 27, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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An image encryption scheme based on public key cryptosystem and quantum logistic map.

Guodong Ye1, Kaixin Jiao1, Xiaoling Huang2

  • 1Faculty of Mathematics and Computer Science, Guangdong Ocean University, Zhanjiang, 524088, China.

Scientific Reports
|December 4, 2020
PubMed
Summary

This study introduces a novel image encryption method using Discrete Cosine Transform (DCT), a quantum logistic map, and a Substitution-Permutation Network (SPN) for enhanced security and speed in digital image protection.

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Area of Science:

  • Computer Science
  • Information Security
  • Cryptography

Background:

  • Existing spatial domain image encryption methods often degrade pixel correlation, compromising security.
  • There is a need for robust and efficient image encryption techniques that maintain data integrity and confidentiality.

Purpose of the Study:

  • To propose a novel image encryption scheme utilizing Discrete Cosine Transform (DCT), a quantum logistic map, and a Substitution-Permutation Network (SPN).
  • To enhance the security and efficiency of image encryption by leveraging frequency domain transformations and a secure network structure.

Main Methods:

  • Images are transformed into the frequency domain using Discrete Cosine Transform (DCT).
  • A quantum logistic map and a Substitution-Permutation Network (SPN) are employed for confusion and diffusion.
  • Low computational complexity operations like XOR and permutation are utilized within the SPN for fast encryption.

Main Results:

  • The proposed scheme effectively encrypts both grayscale and color images.
  • Statistical experiments and security analyses demonstrate the scheme's effectiveness and robustness against various attacks.
  • The encryption process exhibits high speed due to the use of computationally efficient operations.

Conclusions:

  • The proposed DCT, quantum logistic map, and SPN-based image encryption scheme offers a secure and efficient solution for digital image protection.
  • The method successfully addresses the limitations of spatial domain encryption by operating in the frequency domain and employing strong cryptographic principles.