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. Attached Files Name Description MIMEType Size Downloads Title Optimistic fair exchange with strong resolution-ambiguity Author(s) Huang, Xinyi Mu, Yi Susilo, Willy Wu, Wei 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 1558-0008 Keyword(s) ambiguity communication protocol fair exchange security 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 Collections: Faculty of Science, Engineering and Built Environment School of Information Technology Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Mon, 05 Dec 2011, 12:50:54 EST Fri, 06 Jan 2012, 13:39:37 EST Fri, 06 Jan 2012, 13:42:03 EST Wed, 08 Feb 2012, 13:13:03 EST Thu, 09 Feb 2012, 12:56:39 EST Mon, 17 Jun 2013, 17:20:51 EST Thu, 28 Nov 2013, 13:26:01 EST Tue, 27 May 2014, 16:08:56 EST Fri, 13 Jun 2014, 12:13:36 EST Wed, 27 Aug 2014, 22:49:42 EST Filtered Full Citation counts:   Cited 5 times in TR Web of Science Cited 6 times in Scopus Search Google Scholar Access Statistics: 591 Abstract Views, 5 File Downloads  -  Detailed Statistics Created: Mon, 05 Dec 2011, 12:50:54 EST