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Fast and Efficient Image Encryption Algorithm Based on Modular Addition and SPD.

Khushbu Khalid Butt1, Guohui Li2, Sajid Khan1

  • 1School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.

Entropy (Basel, Switzerland)
|December 8, 2020
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Summary
This summary is machine-generated.

This study introduces a novel image encryption algorithm using bit-plane scrambling and SPD diffusion. The method offers robust security against various attacks, enhancing digital image protection.

Keywords:
SHA-512entropyimage encryptionmodular additionscrambling plus diffusion (SPD)security

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Area of Science:

  • Computer Science
  • Cryptography
  • Information Security

Background:

  • Image encryption is crucial for secure data transmission.
  • Existing pixel-level and bit-level methods have limitations in histogram alteration and computational efficiency.
  • There is a need for efficient and robust image encryption techniques.

Purpose of the Study:

  • To propose a new image encryption algorithm.
  • To enhance security and efficiency in image encryption.
  • To demonstrate the algorithm's robustness against various attacks.

Main Methods:

  • The algorithm employs binary bit-plane scrambling and SPD (Scrambled Pixel الدالة) diffusion.
  • It utilizes integer values from SHA-512 hexadecimal keys.
  • Adaptive block-based modular addition of pixels is incorporated for encryption.

Main Results:

  • Security analyses confirm the algorithm's high encryption performance.
  • Simulations demonstrate robustness against brute-force, known/chosen plain text, occlusion, differential, and gray value difference attacks.
  • The proposed method effectively alters image histograms, unlike many pixel-level techniques.

Conclusions:

  • The developed image encryption algorithm provides a robust and efficient solution.
  • It successfully addresses limitations of existing methods.
  • The algorithm offers strong protection for digital images against sophisticated attacks.