• Login
    View Item 
    •   Home
    • IRAC Institute for Research in Applicable Computing - to April 2016
    • Centre for Research in Distributed Technologies (CREDIT)
    • View Item
    •   Home
    • IRAC Institute for Research in Applicable Computing - to April 2016
    • Centre for Research in Distributed Technologies (CREDIT)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UOBREPCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalDepartmentThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalDepartment

    My Account

    LoginRegister

    About

    AboutLearning ResourcesResearch Graduate SchoolResearch InstitutesUniversity Website

    Statistics

    Display statistics

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

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Authors
    Safdar, Ghazanfar Ali
    Sant, Paul
    Epiphaniou, Gregory
    Maple, Carsten
    Issue Date
    2012
    Subjects
    IP networks
    Internet telephony
    
    Metadata
    Show full item record
    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
    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
    ae974a485f413a2113503eed53cd6c53
    10.1049/iet-ifs.2011.0213
    Scopus Count
    Collections
    Centre for Research in Distributed Technologies (CREDIT)

    entitlement

     
    DSpace software (copyright © 2002 - 2021)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.