TITLE:
Hybrid Successive CFA Image Encryption-Watermarking Algorithm Based on the Quaternionic Wavelet Transform (QWT)
AUTHORS:
Hervé Abena Ndongo, Marcelin Vournone, Mireille Pouyap, Taya Ngakawa, Paul Abena Malobe
KEYWORDS:
Encryption, Blind Watermarking, Chaos, CFA Images, QWT
JOURNAL NAME:
Journal of Information Security,
Vol.13 No.4,
August
31,
2022
ABSTRACT: In this paper, we present a new robust hybrid algorithm combining
successively chaotic encryption and blind watermarking of images based on the
quaternionic wavelet transform (QWT) to ensure the secure transfer of digital
data. The calculations of the different evaluation parameters have been
performed in order to determine the robustness of our algorithm to certain
attacks. The application of this hybrid algorithm on CFA (Color Filter Array)
images, allowed us to guarantee the integrity of the digital data and to
propose an autonomous transmission system. The results obtained after
simulation of this successive hybrid algorithm of chaotic encryption and then blind watermarking are appreciated through the values of the
evaluation parameters which are the peak signal-to-noise
ratio (PSNR) and the correlation coefficient (CC), and by the visual
observation of the extracted watermarks before and after attacks. The values of
these parameters show that this successive hybrid algorithm is robust against
some conventional attacks.