Protection of integrity and ownership of pdf documents using invisible signature

Distributing digital document through insecure channel leads to the question of the integrity and the ownership of the file on the receiver’s side. Employing hash function and digital signature algorithms solves the difficulties of the receiver to proof the approval of the document from the sender...

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Bibliographic Details
Main Authors:	Taha, Imad, Zeki, Akram M., Pathan, Al-Sakib Khan, makarim, rusydi
Format:	Conference or Workshop Item
Language:	English
Published:	IEEE digital library 2012
Subjects:	QA75 Electronic computers. Computer science
Online Access:	http://irep.iium.edu.my/22169/ http://irep.iium.edu.my/22169/ http://irep.iium.edu.my/22169/1/1569575521%284%29.pdf

id	iium-22169
recordtype	eprints
spelling	iium-221692014-12-08T07:48:31Z http://irep.iium.edu.my/22169/ Protection of integrity and ownership of pdf documents using invisible signature Taha, Imad Zeki, Akram M. Pathan, Al-Sakib Khan makarim, rusydi QA75 Electronic computers. Computer science Distributing digital document through insecure channel leads to the question of the integrity and the ownership of the file on the receiver’s side. Employing hash function and digital signature algorithms solves the difficulties of the receiver to proof the approval of the document from the sender as well as detecting if the file has been altered by illegitimate parties. In this paper, a method to attach digital signature in Portable Document File (PDF) as invisible watermark is proposed. We show that the space character that splits the field in crossreference table can be overwritten without corrupting the file. The method to embed and extract the signature are proven to be efficient, since the offset index for cross-reference table are available at the end of the file. Our proposed method to embed the signature in the PDF file does not increase the size of the file and offer flexibility for the user to implements the digital signature scheme of his/her own preference. IEEE digital library 2012 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/22169/1/1569575521%284%29.pdf Taha, Imad and Zeki, Akram M. and Pathan, Al-Sakib Khan and makarim, rusydi (2012) Protection of integrity and ownership of pdf documents using invisible signature. In: 14th International Conference on Computer Modelling and Simulation (UKSim), 28-30 March 2012, Cambridge, UK. (In Press) http://uksim2012.info/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QA75 Electronic computers. Computer science
spellingShingle	QA75 Electronic computers. Computer science Taha, Imad Zeki, Akram M. Pathan, Al-Sakib Khan makarim, rusydi Protection of integrity and ownership of pdf documents using invisible signature
description	Distributing digital document through insecure channel leads to the question of the integrity and the ownership of the file on the receiver’s side. Employing hash function and digital signature algorithms solves the difficulties of the receiver to proof the approval of the document from the sender as well as detecting if the file has been altered by illegitimate parties. In this paper, a method to attach digital signature in Portable Document File (PDF) as invisible watermark is proposed. We show that the space character that splits the field in crossreference table can be overwritten without corrupting the file. The method to embed and extract the signature are proven to be efficient, since the offset index for cross-reference table are available at the end of the file. Our proposed method to embed the signature in the PDF file does not increase the size of the file and offer flexibility for the user to implements the digital signature scheme of his/her own preference.
format	Conference or Workshop Item
author	Taha, Imad Zeki, Akram M. Pathan, Al-Sakib Khan makarim, rusydi
author_facet	Taha, Imad Zeki, Akram M. Pathan, Al-Sakib Khan makarim, rusydi
author_sort	Taha, Imad
title	Protection of integrity and ownership of pdf documents using invisible signature
title_short	Protection of integrity and ownership of pdf documents using invisible signature
title_full	Protection of integrity and ownership of pdf documents using invisible signature
title_fullStr	Protection of integrity and ownership of pdf documents using invisible signature
title_full_unstemmed	Protection of integrity and ownership of pdf documents using invisible signature
title_sort	protection of integrity and ownership of pdf documents using invisible signature
publisher	IEEE digital library
publishDate	2012
url	http://irep.iium.edu.my/22169/ http://irep.iium.edu.my/22169/ http://irep.iium.edu.my/22169/1/1569575521%284%29.pdf
first_indexed	2023-09-18T20:33:54Z
last_indexed	2023-09-18T20:33:54Z
_version_	1777408917521825792

Protection of integrity and ownership of pdf documents using invisible signature

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