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A visual security multi-key selection image encryption algorithm based on a new four-dimensional chaos and compressed

Shuqin Zhu1, Congxu Zhu2

  • 1School of Computer Science and Technology, Liaocheng University, Liaocheng, 252059, China.

Scientific Reports
|July 5, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel visual security image encryption algorithm using compressed sensing. The method enhances security through a chaotic map, dynamic pixel-based diffusion, and embedding into wavelet-transformed components, offering robust protection.

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Area of Science:

  • Computer Science
  • Information Security
  • Applied Mathematics

Background:

  • Image encryption is crucial for secure data transmission.
  • Traditional methods often lack robustness against sophisticated attacks.
  • Compressed sensing offers potential for efficient and secure image encryption.

Purpose of the Study:

  • To propose a novel visual security image encryption algorithm based on compressed sensing.
  • To enhance the security and robustness of image encryption.
  • To resist chosen plaintext attacks and noise disturbances.

Main Methods:

  • Utilizing a four-dimensional discrete chaotic map for key stream generation.
  • Employing a Gaussian measurement matrix derived from a Chebyshev map, linked to carrier image features.
  • Implementing a scrambling-cyclic shift-diffusion structure with dynamic pixel-value-based key adjustments.
  • Embedding ciphertext into the high-frequency components of the carrier image after integer wavelet transform.

Main Results:

  • The proposed algorithm demonstrates a large key space and high decryption key sensitivity.
  • The visual security ciphertext image exhibits a similar histogram distribution to the original carrier image.
  • The encryption scheme shows good robustness against noise attacks.
  • The algorithm effectively resists chosen plaintext attacks.

Conclusions:

  • The developed compressed sensing-based image encryption algorithm provides a secure and robust solution.
  • The combination of chaotic maps, dynamic diffusion, and wavelet transform enhances encryption security.
  • The algorithm is suitable for applications requiring visually secure image transmission.