A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding

Steganography is a way to conceal secret message under a cover image, and is one of the most widespread approaches of securing information. The challenge of steganographic methods is to find a balanced trade-off between visual quality and capacity. In addition, robustness and security are also impor...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohsin, Alla Talib
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QA75 Electronic computers Computer science
Online Access:	http://eprints.utm.my/id/eprint/37023/5/AllaTalibMohsinMFSKSM2013.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.37023
record_format	uketd_dc
spelling	my-utm-ep.370232017-07-06T03:49:31Z A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding 2013-07 Mohsin, Alla Talib QA75 Electronic computers. Computer science Steganography is a way to conceal secret message under a cover image, and is one of the most widespread approaches of securing information. The challenge of steganographic methods is to find a balanced trade-off between visual quality and capacity. In addition, robustness and security are also important that need to be considered. The Least Significant Bit (LSB) insertion approach is one of the most popular steganographic techniques, which can provide both high visual quality and large capacity. However, the LSB approach suffers from robustness and security. Thus, this study proposes a new steganography approach that involves five phases: (i) RGB colour cover image is converted to YCbCr colour space. Then, Cb component is selected to hide the secret data. (ii) The secret message is encrypted by using the Affine Cipher. (iii) The encrypted message is then compressed using the Huffman Coding. (iv) The Knight Tour algorithm is applied to embed the secret code onto the Cb component using LSB approach. (v) Once completed, the Cb is merged with the Y and Cr components and is subsegueatiy converted to RGB image to obtain a stego-image. Experimental results showed that not only has the proposed method improved the security and capacity as compared to the last LSB method, it has also increased the visual quality of the stego-image. 2013-07 Thesis http://eprints.utm.my/id/eprint/37023/ http://eprints.utm.my/id/eprint/37023/5/AllaTalibMohsinMFSKSM2013.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:70032?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Computer Science and Information Systems Faculty of Computer Science and Information Systems
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QA75 Electronic computers Computer science
spellingShingle	QA75 Electronic computers Computer science Mohsin, Alla Talib A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
description	Steganography is a way to conceal secret message under a cover image, and is one of the most widespread approaches of securing information. The challenge of steganographic methods is to find a balanced trade-off between visual quality and capacity. In addition, robustness and security are also important that need to be considered. The Least Significant Bit (LSB) insertion approach is one of the most popular steganographic techniques, which can provide both high visual quality and large capacity. However, the LSB approach suffers from robustness and security. Thus, this study proposes a new steganography approach that involves five phases: (i) RGB colour cover image is converted to YCbCr colour space. Then, Cb component is selected to hide the secret data. (ii) The secret message is encrypted by using the Affine Cipher. (iii) The encrypted message is then compressed using the Huffman Coding. (iv) The Knight Tour algorithm is applied to embed the secret code onto the Cb component using LSB approach. (v) Once completed, the Cb is merged with the Y and Cr components and is subsegueatiy converted to RGB image to obtain a stego-image. Experimental results showed that not only has the proposed method improved the security and capacity as compared to the last LSB method, it has also increased the visual quality of the stego-image.
format	Thesis
qualification_level	Master's degree
author	Mohsin, Alla Talib
author_facet	Mohsin, Alla Talib
author_sort	Mohsin, Alla Talib
title	A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
title_short	A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
title_full	A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
title_fullStr	A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
title_full_unstemmed	A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
title_sort	new steganography technique using knight’s tour algorithm, affine cipher and huffman coding
granting_institution	Universiti Teknologi Malaysia, Faculty of Computer Science and Information Systems
granting_department	Faculty of Computer Science and Information Systems
publishDate	2013
url	http://eprints.utm.my/id/eprint/37023/5/AllaTalibMohsinMFSKSM2013.pdf
_version_	1747816492243615744

A new steganography technique using knight’s tour algorithm, affine cipher and huffman coding

Similar Items