Audio and image encryption scheme based on QR decomposition and random modulus decomposition in Fresnel domain
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Optica Applicata
Abstract
In this paper, an asymmetric audio and image encryption mechanism using QR decomposition
and random modulus decomposition (RD) in the Fresnel domain is proposed. The audio file is recorded
as a vector and converted to a two-dimensional array to act as an image or a sound map.
This sound map is encrypted using the image encryption algorithm proposed in this paper. The proposed
cryptosystem is validated for both audios and grayscale images. Fresnel parameters and the
two private keys obtained from QR decomposition and random modulus decomposition (RD) form
the key space. Computer-based reproductions have been carried out to prove the validity and authenticity
of the scheme. Simulation results authenticate that the scheme is robust and efficient
against various attacks and is sensitive to input parameters.
Description
Keywords
QR decomposition, audio encryption, random modulus decomposition