Show simple item record

dc.contributor.authorShifa, Amna
dc.contributor.authorAsghar, Mamoona Naveed
dc.contributor.authorNoor, Salma
dc.contributor.authorGohar, Neelam
dc.date.accessioned2019-11-27T12:37:10Z
dc.date.available2019-11-27T12:37:10Z
dc.date.copyright2019
dc.date.issued2019-03-11
dc.identifier.citationShifa, A.,Ashgar, M. N., Noor, S., Gohar, N. (2019). Lightweight cipher for H.264 videos in the Internet of Multimedia Things with encryption space ratio diagnostics. Sensors. 19(5): 1228. doi.org/10.3390/s19051228en_US
dc.identifier.issn1424-8220
dc.identifier.otherArticles - Software Research Institute AITen_US
dc.identifier.urihttp://research.thea.ie/handle/20.500.12065/2909
dc.description.abstractWithin an Internet of Multimedia Things, the risk of disclosing streamed video content, such as that arising from video surveillance, is of heightened concern. This leads to the encryption of that content. To reduce the overhead and the lack of flexibility arising from full encryption of the content, a good number of selective-encryption algorithms have been proposed in the last decade. Some of them have limitations, in terms of: significant delay due to computational cost, or excess memory utilization, or, despite being energy efficient, not providing a satisfactory level of confidentiality, due to their simplicity. To address such limitations, this paper presents a lightweight selective encryption scheme, in which encoder syntax elements are encrypted with the innovative EXPer (extended permutation with exclusive OR). The selected syntax elements are taken from the final stage of video encoding that is during the entropy coding stage. As a diagnostic tool, the Encryption Space Ratio measures encoding complexity of the video relative to the level of encryption so as to judge the success of the encryption process, according to entropy coder. A detailed comparative analysis of EXPer with other state-of-the-art encryption algorithms confirms that EXPer provides significant confidentiality with a small computational cost and a negligible encryption bitrate overhead. Thus, the results demonstrate that the proposed security scheme is a suitable choice for constrained devices in an Internet of Multimedia Things environment.en_US
dc.formatPDFen_US
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.relation.ispartofSensorsen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/ie/*
dc.subjectEncrpytion space ratioen_US
dc.subjectEntropy codingen_US
dc.subjectH.264/AVCen_US
dc.subjectInternet of multimedia thingsen_US
dc.subjectLightweight cipheren_US
dc.subjectSelective encryptionen_US
dc.titleLightweight cipher for H.264 videos in the Internet of Multimedia Things with encryption space ratio diagnosticsen_US
dc.typeArticleen_US
dc.description.peerreviewyesen_US
dc.identifier.doidoi.org/10.3390/s19051228
dc.identifier.orcidhttps://orcid.org/0000-0001-7460-266X
dc.rights.accessOpen Accessen_US
dc.subject.departmentSoftware Research Instituteen_US


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Ireland
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Ireland