Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim

Image watermarking embeds identifying information in an image in such a manner that it cannot easily be removed. For the past several years, image digital watermarking has become a necessary element used for hid ing secret image and enabling secured communication such as privacy, confidentiality, au...

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Main Authors:	Yazid, Nur Azien, Abdullah, Kamilah, Abd Halim, Suhaila
Format:	Article
Language:	English
Published:	Universiti Teknologi MARA Cawangan Pulau Pinang 2019
Subjects:	Cryptography. Access control. Computer security Algorithms System design
Online Access:	http://ir.uitm.edu.my/id/eprint/28904/ http://ir.uitm.edu.my/id/eprint/28904/1/28904.pdf

id	uitm-28904
recordtype	eprints
spelling	uitm-289042020-03-19T06:28:41Z http://ir.uitm.edu.my/id/eprint/28904/ Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila Cryptography. Access control. Computer security Algorithms System design Image watermarking embeds identifying information in an image in such a manner that it cannot easily be removed. For the past several years, image digital watermarking has become a necessary element used for hid ing secret image and enabling secured communication such as privacy, confidentiality, authentication and data integrity. Although numerous watermarking schemes are present in grayscale images, the present work focuses on the RGB color image. This study proposed a new hybrid method that would satisfy the essential needs of modern image watermarking. The color image watermarking is based on the 2D Discrete Cosine Transform and Egamal cryptosystem.The 2D Discrete Cosine Transform depends on the matrix products, while the ElGamal cryptosystem depends on the discrete logarithm problem. The cryptosystem is combined with existing Arnold transform in watermarking algorithm to enhance the security of secret image. Value of Peak Signal to Noise Ratio was taken as performance evaluation parameters. On the whole, the performance evaluation shows that combining the two algorithms improved the performance of image watermarking. Universiti Teknologi MARA Cawangan Pulau Pinang 2019-06 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/28904/1/28904.pdf Yazid, Nur Azien and Abdullah, Kamilah and Abd Halim, Suhaila (2019) Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim. ESTEEM Academic Journal, 15. pp. 44-55. ISSN 2289-4934
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Cryptography. Access control. Computer security Algorithms System design
spellingShingle	Cryptography. Access control. Computer security Algorithms System design Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
description	Image watermarking embeds identifying information in an image in such a manner that it cannot easily be removed. For the past several years, image digital watermarking has become a necessary element used for hid ing secret image and enabling secured communication such as privacy, confidentiality, authentication and data integrity. Although numerous watermarking schemes are present in grayscale images, the present work focuses on the RGB color image. This study proposed a new hybrid method that would satisfy the essential needs of modern image watermarking. The color image watermarking is based on the 2D Discrete Cosine Transform and Egamal cryptosystem.The 2D Discrete Cosine Transform depends on the matrix products, while the ElGamal cryptosystem depends on the discrete logarithm problem. The cryptosystem is combined with existing Arnold transform in watermarking algorithm to enhance the security of secret image. Value of Peak Signal to Noise Ratio was taken as performance evaluation parameters. On the whole, the performance evaluation shows that combining the two algorithms improved the performance of image watermarking.
format	Article
author	Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila
author_facet	Yazid, Nur Azien Abdullah, Kamilah Abd Halim, Suhaila
author_sort	Yazid, Nur Azien
title	Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
title_short	Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
title_full	Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
title_fullStr	Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
title_full_unstemmed	Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim
title_sort	modified algorithm for image watermarking using 2d-dct and elgamal cryptosystem / nur azien yazid, kamilah abdullah and suhaila abd halim
publisher	Universiti Teknologi MARA Cawangan Pulau Pinang
publishDate	2019
url	http://ir.uitm.edu.my/id/eprint/28904/ http://ir.uitm.edu.my/id/eprint/28904/1/28904.pdf
first_indexed	2023-09-18T23:20:48Z
last_indexed	2023-09-18T23:20:48Z
_version_	1777419418227179520

Modified algorithm for image watermarking using 2D-DCT and elgamal cryptosystem / Nur Azien Yazid, Kamilah Abdullah and Suhaila Abd Halim

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