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

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Title: Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls.
Authors: Epiphaniou, G.1 gregory.epiphaniou@beds.ac.uk, Maple, C.1, Sant, P.1, Safdar, G. A.2
Source: IET Information Security (Institution of Engineering & Technology). 2012, Vol. 6 Issue 3, p141-148. 8p. 1 Diagram, 5 Charts, 5 Graphs.
Subjects: Internet telephony, Block ciphers, Internet protocols, Data security, Data packeting, Data encryption
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. [ABSTRACT FROM AUTHOR]
Copyright of IET Information Security (Institution of Engineering & Technology) is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 94926176
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls.
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  Data: <searchLink fieldCode="AR" term="%22Epiphaniou%2C+G%2E%22">Epiphaniou, G.</searchLink><relatesTo>1</relatesTo><i> gregory.epiphaniou@beds.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Maple%2C+C%2E%22">Maple, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sant%2C+P%2E%22">Sant, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Safdar%2C+G%2E+A%2E%22">Safdar, G. A.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22IET+Information+Security+%28Institution+of+Engineering+%26+Technology%29%22">IET Information Security (Institution of Engineering & Technology)</searchLink>. 2012, Vol. 6 Issue 3, p141-148. 8p. 1 Diagram, 5 Charts, 5 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Internet+telephony%22">Internet telephony</searchLink><br /><searchLink fieldCode="DE" term="%22Block+ciphers%22">Block ciphers</searchLink><br /><searchLink fieldCode="DE" term="%22Internet+protocols%22">Internet protocols</searchLink><br /><searchLink fieldCode="DE" term="%22Data+security%22">Data security</searchLink><br /><searchLink fieldCode="DE" term="%22Data+packeting%22">Data packeting</searchLink><br /><searchLink fieldCode="DE" term="%22Data+encryption%22">Data encryption</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of IET Information Security (Institution of Engineering & Technology) is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=94926176
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      – Type: doi
        Value: 10.1049/iet-ifs.2011.0213
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 141
    Subjects:
      – SubjectFull: Internet telephony
        Type: general
      – SubjectFull: Block ciphers
        Type: general
      – SubjectFull: Internet protocols
        Type: general
      – SubjectFull: Data security
        Type: general
      – SubjectFull: Data packeting
        Type: general
      – SubjectFull: Data encryption
        Type: general
    Titles:
      – TitleFull: Effects of iterative block ciphers on quality of experience for Internet Protocol Security enabled voice over IP calls.
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              Text: 2012
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