Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls

4.00
Hdl Handle:
http://hdl.handle.net/10547/279166
Title:
Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls
Authors:
Safdar, Ghazanfar Ali ( 0000-0001-8969-1044 ) ; Sant, Paul; Epiphaniou, Gregory; Maple, Carsten
Abstract:
Voice over IP (VoIP) is the technology used to transport real-time voice over a packet-switched network. This study analyses the effects of encrypted VoIP streams on perceived Quality of Experience (QoE) from a user's perspective. An in-depth analysis on how the transparent nature of encryption can influence the way users perceive the quality of a VoIP call have been investigated by using the E model. A series of experiments have been conducted using a representative sample of modern codecs currently employed for digitising voice, as well as three of the most commonly used iterative block ciphers for encryption (DES, 3DES, AES). It has been found that the Internet Protocol Security encryption of VoIP strongly relates to the payload sizes and choice of codecs and this relationship has different effects on the overall QoE as measured by the E model, in terms of the way that users perceive the quality of a VoIP call. The main result of this paper is that the default payload shipped with the codecs is not the optimal selection for an increased number of VoIP calls, when encryption is applied and a minimum level of QoE has to be maintained, per call.
Citation:
Epiphaniou, G.; Maple, C.; Sant, P. and Safdar, G.A., (2012) 'Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls' 6 (3):141-148 IET Information Security
Publisher:
IET
Journal:
IET Information Security
Issue Date:
2012
URI:
http://hdl.handle.net/10547/279166
DOI:
10.1049/iet-ifs.2011.0213
Additional Links:
http://digital-library.theiet.org/content/journals/10.1049/iet-ifs.2011.0213
Type:
Article
Language:
en
ISSN:
1751-8709; 1751-8717
Appears in Collections:
Centre for Research in Distributed Technologies (CREDIT)

Full metadata record

DC FieldValue Language
dc.contributor.authorSafdar, Ghazanfar Alien_GB
dc.contributor.authorSant, Paulen_GB
dc.contributor.authorEpiphaniou, Gregoryen_GB
dc.contributor.authorMaple, Carstenen_GB
dc.date.accessioned2013-04-07T17:35:52Z-
dc.date.available2013-04-07T17:35:52Z-
dc.date.issued2012-
dc.identifier.citationEpiphaniou, G.; Maple, C.; Sant, P. and Safdar, G.A., (2012) 'Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls' 6 (3):141-148 IET Information Securityen_GB
dc.identifier.issn1751-8709-
dc.identifier.issn1751-8717-
dc.identifier.doi10.1049/iet-ifs.2011.0213-
dc.identifier.urihttp://hdl.handle.net/10547/279166-
dc.description.abstractVoice over IP (VoIP) is the technology used to transport real-time voice over a packet-switched network. This study analyses the effects of encrypted VoIP streams on perceived Quality of Experience (QoE) from a user's perspective. An in-depth analysis on how the transparent nature of encryption can influence the way users perceive the quality of a VoIP call have been investigated by using the E model. A series of experiments have been conducted using a representative sample of modern codecs currently employed for digitising voice, as well as three of the most commonly used iterative block ciphers for encryption (DES, 3DES, AES). It has been found that the Internet Protocol Security encryption of VoIP strongly relates to the payload sizes and choice of codecs and this relationship has different effects on the overall QoE as measured by the E model, in terms of the way that users perceive the quality of a VoIP call. The main result of this paper is that the default payload shipped with the codecs is not the optimal selection for an increased number of VoIP calls, when encryption is applied and a minimum level of QoE has to be maintained, per call.en_GB
dc.language.isoenen
dc.publisherIETen_GB
dc.relation.urlhttp://digital-library.theiet.org/content/journals/10.1049/iet-ifs.2011.0213en_GB
dc.rightsArchived with thanks to IET Information Securityen_GB
dc.subjectIP networksen_GB
dc.subjectInternet telephonyen_GB
dc.titleEffects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP callsen
dc.typeArticleen
dc.identifier.journalIET Information Securityen_GB
All Items in UOBREP are protected by copyright, with all rights reserved, unless otherwise indicated.