Optimistic fair exchange with strong resolution-ambiguity

Huang, Xinyi, Mu, Yi, Susilo, Willy, Wu, Wei and Xiang, Yang 2011, Optimistic fair exchange with strong resolution-ambiguity, IEEE journal on selected areas in communications, vol. 29, no. 7, pp. 1491-1502, doi: 10.1109/JSAC.2011.110814.

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Title Optimistic fair exchange with strong resolution-ambiguity
Author(s) Huang, Xinyi
Mu, Yi
Susilo, Willy
Wu, Wei
Xiang, YangORCID iD for Xiang, Yang orcid.org/0000-0001-5252-0831
Journal name IEEE journal on selected areas in communications
Volume number 29
Issue number 7
Start page 1491
End page 1502
Total pages 12
Publisher IEEE
Place of publication Piscataway, N. J.
Publication date 2011-08
ISSN 0733-8716
Keyword(s) ambiguity
communication protocol
fair exchange
Summary Optimistic fair exchange (OFE) allows two parties to exchange their digital items in a fair way. As one of the fundamental problems in secure electronic business and digital rights management, OFE has been studied intensively since its introduction. This paper introduces and defines a new property for OFE: Strong Resolution-Ambiguity. We show that many existing OFE protocols have the new property, but its formal investigation has been missing in those protocols. We prove that in the certified-key model, an OFE protocol is secure in the multi-user setting if it is secure in the single-user setting and has the property of strong resolution-ambiguity. Our result not only simplifies the security analysis of OFE protocols in the multi-user setting but also provides a new approach for the design of multi-user secure OFE protocols. Following this approach, a new OFE protocol with strong resolution-ambiguity is proposed. Our analysis shows that the protocol is setup-free, stand-alone and multi-user secure without random oracles.
Language eng
DOI 10.1109/JSAC.2011.110814
Field of Research 080503 Networking and Communications
Socio Economic Objective 890201 Application Software Packages (excl. Computer Games)
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2011
Copyright notice ©2011, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30040610

Document type: Journal Article
Collection: School of Information Technology
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