Achieving autonomous fair exchange in ubiquitous network settings

Q. Shi, N. Zhang, M. Merabti, R. Askwith

    Research output: Contribution to journalArticlepeer-review


    This paper addresses the issue of fair (signature or key) exchange in emerging ubiquitous commerce (u-commerce). Such an application poses new security challenges. In particular, it involves distributed and autonomous operations running in a much open, dynamic and resource-diversified networking environment, which makes an exchange highly susceptible to security attacks and system failures. Existing approaches to fair exchange are ineffective in dealing with the new challenges as their design did not envisage such complex operational situations. In this paper, we aim to propose a novel fair exchange protocol specifically for u-commerce in response to the new challenges. The protocol is supported by an integration of several techniques, such as threshold proxy signatures, purpose-restricted encryption key certification and threshold verifiable proxy encryption, to accomplish the fairness of exchange in u-commerce settings. The protocol analysis is also provided for the proof of its fairness. © 2010 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)653-667
    Number of pages14
    JournalJournal of Network and Computer Applications
    Issue number2
    Publication statusPublished - Mar 2011


    • Agent systems
    • Communication protocols
    • Fair exchange
    • Signatures
    • Ubiquitous networks


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