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An asymmetric audio watermarking cryptosystem based on Fresnel transform

NEELAM1, A. K. YADAV2,*

Affiliation

  1. Department of Mathematics, Amity School of Applied Sciences, Amity University Haryana, Gurugram-122043, India
  2. Department of Mathematics, School of Basic Sciences, Central University of Haryana, Mahendergarh-123031, India

Abstract

In this paper, we present a secure audio watermarking scheme based on Fresnel transform. An input audio file is first converted to an image and then bonded with a random amplitude mask (RAM) followed by a Fresnel transform. The transformed image is subjected to phase truncation (PT) and phase reservation (PR) operation. Thereafter, 3D Lorenz chaotic system is applied on the PT part, and the PR part serves as the first decryption key. The resulting image is bonded with a random phase mask (RPM) followed by another Fresnel transform. The transformed image is subjected to another PT and PR operation. Finally, the phase truncated part is embedded in a host image to produce watermarked image, and the phase reserved part serves as the second decryption key. Fresnel transform parameters add to security of the proposed system. The proposed scheme is tested for its feasibility, and it shows robustness against known-plaintext attack (KPA), chosen-plaintext attack (CPA), and occlusion attack..

Keywords

Fresnel propagation, Lorenz transform, Audio watermarking, Asymmetric cryptosystem.

Submitted at: May 17, 2022
Accepted at: Oct. 7, 2024

Citation

NEELAM, A. K. YADAV, An asymmetric audio watermarking cryptosystem based on Fresnel transform, Journal of Optoelectronics and Advanced Materials Vol. 26, Iss. 9-10, pp. 433-443 (2024)