Trust, Privacy and Security in Digital Business

Abstract. A pair of ‘trust maps’ give a fine-grained view of an agent’s accumulated, time-discounted belief that the enactment of commitments by another agent will be in-line with what was promised, and that the observed agent will act in a way that respects the confidentiality of previously passed information. The structure of these maps is defined in terms of a categorisation of utterances and the ontology. Various summary measures are then applied to these maps to give a succinct view of trust | Lecture Notes in Computer Science 5185 Commenced Publication in 1973 Founding and Former Series Editors: Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen Editorial Board David Hutchison Lancaster University, UK Takeo Kanade Carnegie Mellon University, Pittsburgh, PA, USA Josef Kittler University of Surrey, Guildford, UK Jon M. Kleinberg Cornell University, Ithaca, NY, USA Alfred Kobsa University of California, Irvine, CA, USA Friedemann Mattern ETH Zurich, Switzerland John C. Mitchell Stanford University, CA, USA Moni Naor Weizmann Institute of Science, Rehovot, Israel Oscar Nierstrasz University of Bern, Switzerland C. Pandu Rangan Indian Institute of Technology, Madras, India Bernhard Steffen University of Dortmund, Germany Madhu Sudan Massachusetts Institute of Technology, MA, USA Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug Tygar University of California, Berkeley, CA, USA Gerhard Weikum Max-Planck Institute of Computer Science, Saarbruecken, Germany Steven Furnell Sokratis K. Katsikas Antonio Lioy (Eds.) Trust, Privacy and Security in Digital Business 5th International Conference, TrustBus 2008 Turin, Italy, September 4-5, 2008 Proceedings 13 Volume Editors Steven Furnell University of Plymouth School of Computing, Communications and Electronics A310, Portland Square, Drake Circus, Plymouth, Devon PL4 8AA, UK E-mail: sfurnell@ Sokratis K. Katsikas University of Piraeus Department of Technology Education and Digital Systems 150 Androutsou St., 18534 Piraeus, Greece E-mail: ska@ Antonio Lioy Politecnico di Torino Dipartimento di Automatica e Informatica Corso Duca degli Abruzzi 24, 10129 Torino, Italy E-mail: lioy@ Library of Congress Control Number: 2008933371 CR Subject Classification (1998): , , , , , , LNCS Sublibrary: SL 4 – Security and Cryptology ISSN 0302-9743 ISBN-10 3-540-85734-6 Springer Berlin Heidelberg New York ISBN-13 978-3-540-85734-1 Springer Berlin .