Decisive Factors for Quality of Experience of OpenID authentication using EAP-SIM

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Charlott Lorentzen, Markus Fiedler, Henric Johnson, Ivar Jørstad
Title: Decisive Factors for Quality of Experience of OpenID authentication using EAP-SIM
Translated title: Bestämmande faktorer för upplevd tjänstekvalité av OpenID-authentisering med EAP-SIM
Conference name: European Teletraffic Seminar (ETS 2011)
Year: 2011
Publisher: Poznań University of Technology
City: Poznan, Poland
Organization: Blekinge Institute of Technology
Department: School of Computing (Sektionen för datavetenskap och kommunikation)
School of Computing S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/com
Authors e-mail: charlott.lorentzen@bth.se
Language: English
Abstract: When using the web, large response times are bones
of contention for users, i.e. they damp the Quality of Experience (QoE). Though, if one knew the cause of a large response time, one can examine what can be done about this obstacle. In this paper, we determine the weak point of the Extensible Authentication Protocol Method for GSM Subscriber Identity Modules (EAP-SIM) with the OpenID service with regards to excessive authentication times, which determine the response times. In order to provoke controlled raises of latter, we emulate bad network performance by introducing bi-directional delay between the supplicant (client) and the authenticator (server). Based on a recent, exponential relationship between QoE and response time, we then identify, quantify and compare the decisive factors for QoE reduction as functions of the components of the authentication times. The results we obtain clearly show that one task of the authentication contributes significantly more to the total response times than the other task, which points out the direction for future optimisation of user perception of authentication times.
Subject: Telecommunications\Network Security
Computer Science\Networks and Communications
Keywords: Authentication, EAP, EAP-SIM, OpenID, Quality of Experience, response times
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