Extending Signatures of Reputation
Reputation mechanisms are a powerful tool to reduce the potential risk of interacting with almost or completely unknown users in environments in which there is no incentive to behave trustworthily, e.g. in open and large-scale systems. However, by collect
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Marit Hansen Jaap-Henk Hoepman Ronald Leenes Diane Whitehouse (Eds.)
Privacy and Identity Management for Emerging Services and Technologies 8th IFIP WG 9.2, 9.5, 9.6/11.7, 11.4, 11.6 International Summer School Nijmegen, The Netherlands, June 17–21, 2013 Revised Selected Papers
123
IFIP Advances in Information and Communication Technology
421
Editor-in-Chief A. Joe Turner, Seneca, SC, USA
Editorial Board Foundations of Computer Science Jacques Sakarovitch, Télécom ParisTech, France Software: Theory and Practice Michael Goedicke, University of Duisburg-Essen, Germany Education Arthur Tatnall, Victoria University, Melbourne, Australia Information Technology Applications Erich J. Neuhold, University of Vienna, Austria Communication Systems Aiko Pras, University of Twente, Enschede, The Netherlands System Modeling and Optimization Fredi Tröltzsch, TU Berlin, Germany Information Systems Jan Pries-Heje, Roskilde University, Denmark ICT and Society Diane Whitehouse, The Castlegate Consultancy, Malton, UK Computer Systems Technology Ricardo Reis, Federal University of Rio Grande do Sul, Porto Alegre, Brazil Security and Privacy Protection in Information Processing Systems Yuko Murayama, Iwate Prefectural University, Japan Artificial Intelligence Tharam Dillon, Curtin University, Bentley, Australia Human-Computer Interaction Jan Gulliksen, KTH Royal Institute of Technology, Stockholm, Sweden Entertainment Computing Matthias Rauterberg, Eindhoven University of Technology, The Netherlands
IFIP – The International Federation for Information Processing IFIP was founded in 1960 under the auspices of UNESCO, following the First World Computer Congress held in Paris the previous year. An umbrella organization for societies working in information processing, IFIP’s aim is two-fold: to support information processing within its member countries and to encourage technology transfer to developing nations. As its mission statement clearly states, IFIP’s mission is to be the leading, truly international, apolitical organization which encourages and assists in the development, exploitation and application of information technology for the benefit of all people. IFIP is a non-profitmaking organization, run almost solely by 2500 volunteers. It operates through a number of technical committees, which organize events and publications. IFIP’s events range from an international congress to local seminars, but the most important are: • The IFIP World Computer Congress, held every second year; • Open conferences; • Working conferences. The flagship event is the IFIP World Computer Congress, at which both invited and contributed papers are presented. Contributed papers are rigorously refereed and the rejection rate is high. As with the Congress, participation in the open conferences is open to all and papers may be invited or submitted. Again, submitted papers are stringently refereed. The working conferences are structured differently. They are usually run by a working group and attendance is small and by invitation only. Their purpose i
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