Comparison of file sanitization techniques in USB based on average file entropy values

Nowadays, the technology has become so advanced that many electronic gadgets are in every household today. The fast growth of technology today gives the ability for digital devices like smartphones and laptops to have a huge size of storage which is letting people to keep many of their information l...

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Main Author:	Onn, Nur Amanina
Format:	Thesis
Language:	English English English
Published:	2018
Subjects:	Q1-295 General
Online Access:	http://eprints.uthm.edu.my/521/1/24p%20NUR%20AMANINA%20ONN.pdf http://eprints.uthm.edu.my/521/2/NUR%20AMANINA%20ONN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/521/3/NUR%20AMANINA%20ONN%20WATERMARK.pdf
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spelling	my-uthm-ep.5212021-07-25T08:37:44Z Comparison of file sanitization techniques in USB based on average file entropy values 2018-06 Onn, Nur Amanina Q1-295 General Nowadays, the technology has become so advanced that many electronic gadgets are in every household today. The fast growth of technology today gives the ability for digital devices like smartphones and laptops to have a huge size of storage which is letting people to keep many of their information like contact lists, photos, videos and even personal information. When these information are not useful anymore, users will delete them. However, the growth of technology also letting people to recover back data that has been deleted. In this case, users do not realise that their deleted data can be recovered and then used by unauthorized user. The data deleted is invisible but not gone. This is where file sanitization plays it role. File sanitization is the process of deleting the memory of the content and over write it with a different characters. In this research, the methods chosen to sanitize file are Write Zero, Write Zero Randomly and Write Zero Alternately. All of the techniques will overwrite data with zero. The best technique is chosen based on the comparison of average entropy value of the files after they have been overwritten. Write Zero is the only technique that is provided by many software like WipeFile and BitKiller. There is no software that provide Write Zero Randomly technique except for sanitizing disk using dd. As for that, Write Zero Randomly and proposed technique, Write Zero Alternately are developed using C programming language in Dev-C++. In this research, sanitization with Write Zero has the lowest average entropy value for text document (TXT), Microsoft Word (DOCX) and image (JPG) with 100% of data in the files undergone this technique have been zero-filled compared to Write Zero Randomly and Write Zero Alternately. Next, Write Zero Alternately is more efficient in terms of average entropy by 4.64 bpB to its closest competitor which is Write Zero Randomly with 5.02 bpB. This shows that Write Zero is the best sanitization method. These file sanitization techniques are important to keep the confidentiality against unauthorized user. 2018-06 Thesis http://eprints.uthm.edu.my/521/ http://eprints.uthm.edu.my/521/1/24p%20NUR%20AMANINA%20ONN.pdf text en public http://eprints.uthm.edu.my/521/2/NUR%20AMANINA%20ONN%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/521/3/NUR%20AMANINA%20ONN%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Faculty of Computer Science and Information Technology
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	Q1-295 General
spellingShingle	Q1-295 General Onn, Nur Amanina Comparison of file sanitization techniques in USB based on average file entropy values
description	Nowadays, the technology has become so advanced that many electronic gadgets are in every household today. The fast growth of technology today gives the ability for digital devices like smartphones and laptops to have a huge size of storage which is letting people to keep many of their information like contact lists, photos, videos and even personal information. When these information are not useful anymore, users will delete them. However, the growth of technology also letting people to recover back data that has been deleted. In this case, users do not realise that their deleted data can be recovered and then used by unauthorized user. The data deleted is invisible but not gone. This is where file sanitization plays it role. File sanitization is the process of deleting the memory of the content and over write it with a different characters. In this research, the methods chosen to sanitize file are Write Zero, Write Zero Randomly and Write Zero Alternately. All of the techniques will overwrite data with zero. The best technique is chosen based on the comparison of average entropy value of the files after they have been overwritten. Write Zero is the only technique that is provided by many software like WipeFile and BitKiller. There is no software that provide Write Zero Randomly technique except for sanitizing disk using dd. As for that, Write Zero Randomly and proposed technique, Write Zero Alternately are developed using C programming language in Dev-C++. In this research, sanitization with Write Zero has the lowest average entropy value for text document (TXT), Microsoft Word (DOCX) and image (JPG) with 100% of data in the files undergone this technique have been zero-filled compared to Write Zero Randomly and Write Zero Alternately. Next, Write Zero Alternately is more efficient in terms of average entropy by 4.64 bpB to its closest competitor which is Write Zero Randomly with 5.02 bpB. This shows that Write Zero is the best sanitization method. These file sanitization techniques are important to keep the confidentiality against unauthorized user.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Onn, Nur Amanina
author_facet	Onn, Nur Amanina
author_sort	Onn, Nur Amanina
title	Comparison of file sanitization techniques in USB based on average file entropy values
title_short	Comparison of file sanitization techniques in USB based on average file entropy values
title_full	Comparison of file sanitization techniques in USB based on average file entropy values
title_fullStr	Comparison of file sanitization techniques in USB based on average file entropy values
title_full_unstemmed	Comparison of file sanitization techniques in USB based on average file entropy values
title_sort	comparison of file sanitization techniques in usb based on average file entropy values
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Faculty of Computer Science and Information Technology
publishDate	2018
url	http://eprints.uthm.edu.my/521/1/24p%20NUR%20AMANINA%20ONN.pdf http://eprints.uthm.edu.my/521/2/NUR%20AMANINA%20ONN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/521/3/NUR%20AMANINA%20ONN%20WATERMARK.pdf
_version_	1747830630470647808

Comparison of file sanitization techniques in USB based on average file entropy values

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