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<p>This paper introduces a non-linear multi-image asymmetric encryption scheme using Quasinormal-Zernike (QZ) algorithm and Fresnel transform. The method encrypts multiple images into a single ciphertext while ensuring robust security through highly sensitive QZ and Fresnel parameters. The proposed scheme is validated via MATLAB simulations. The scheme demonstrates strong resistance to specific attack, basic cryptographic attacks and statistical attacks, supported by histogram plots, correlation distribution plots, and entropy analysis, along with key performance metrics. The one of the key strength of this approach is its scalability which allows it to extend up to 5<i>n</i> images, offering a versatile solution for multi-image encryption with superior security and efficiency compared to existing methods.</p>

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Nonlinear multiple color image encryption using Quasinormal-Zernike Algorithm in Fresnel transform domain

  • 期刊论文

  • 发表日期：

    2025年10月11日

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  • Shalu,
  • A. K. Yadav,
  • Phool Singh

摘要

This paper introduces a non-linear multi-image asymmetric encryption scheme using Quasinormal-Zernike (QZ) algorithm and Fresnel transform. The method encrypts multiple images into a single ciphertext while ensuring robust security through highly sensitive QZ and Fresnel parameters. The proposed scheme is validated via MATLAB simulations. The scheme demonstrates strong resistance to specific attack, basic cryptographic attacks and statistical attacks, supported by histogram plots, correlation distribution plots, and entropy analysis, along with key performance metrics. The one of the key strength of this approach is its scalability which allows it to extend up to 5n images, offering a versatile solution for multi-image encryption with superior security and efficiency compared to existing methods.