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An Investigation of Entropy of Selectively Encrypted Bitmap Images
Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. (Datavetenskap)
Karlstad University, Faculty of Economic Sciences, Communication and IT, Department of Computer Science. Karlstad University, Faculty of Economic Sciences, Communication and IT, Centre for HumanIT. (Datavetenskap)ORCID iD: 0000-0003-0778-4736
2012 (English)In: Computational Aspects of Social Networks (CASoN), 2012 Fourth International Conference on, IEEE, 2012, p. 238-243Conference paper, Published paper (Refereed)
Abstract [en]

Selective encryption is a concept in which the main goal is to reduce computational cost while providing confidentiality by encrypting only chosen parts of the information to be protected. Previous work on selective encryption has mainly been aimed towards multimedia applications in order to reduce the overhead induced by encryption while still making the information perceptually secure to a desired protection level. This was accomplished by utilizing the fact that different parts of the information have different impacts on our perception senses, i.e., eyes and ears. How computationally secure the information is when using selective encryption has however only briefly been mentioned or rudimentarily analyzed. In this paper, we therefore investigate the security implications of selective encryption by generalizing the work on entropy of selectively encrypted strings to several dimensions and applying it to bitmap images. The generalization is done by constructing information neighborhoods that capture and model information dependencies in several dimensions.

Place, publisher, year, edition, pages
IEEE, 2012. p. 238-243
Series
International Conference on Computational Aspects of Social Networks, ISSN 2155-7047
Keywords [en]
security measures, selective encryption, entropy, information neighborhoods, bitmap images
National Category
Computer Engineering
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-15047DOI: 10.1109/CASoN.2012.6412409ISI: 000314803000041ISBN: 978-1-4673-4793-8 (print)ISBN: 978-1-4673-4792-1 (print)OAI: oai:DiVA.org:kau-15047DiVA, id: diva2:557537
Conference
IAS 2012 - "Innovative Cyber Security: Protecting Nations Beyond Borders" - The 8th Information assurance and security conference, 21-23 November 2012, San Carlos, Brazil
Available from: 2012-09-28 Created: 2012-09-28 Last updated: 2018-01-12Bibliographically approved

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Publisher's full texthttp://www.inderscience.com/mapper.php?id=59

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Lundin, ReineLindskog, Stefan

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