Further observations on optimistic fair exchange protocols in the multi-user setting

Huang, Xinyi, Mu, Yi, Susilo, Willy, Wu, Wei and Xiang, Yang 2010, Further observations on optimistic fair exchange protocols in the multi-user setting, in PKC 2010 : Public key cryptography : Proceedings of the 13th International Conference on Practice and Theory of Public-Key Cryptography, Paris, France, May 26-28, Springer, Berlin, Germany, pp. 124-141.

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Title Further observations on optimistic fair exchange protocols in the multi-user setting
Author(s) Huang, Xinyi
Mu, Yi
Susilo, Willy
Wu, Wei
Xiang, Yang
Conference name Practice and Theory in Public Key Cryptography. Conference (13th : 2010 : Paris, France)
Conference location Paris, France
Conference dates 26-28 May. 2010
Title of proceedings PKC 2010 : Public key cryptography : Proceedings of the 13th International Conference on Practice and Theory of Public-Key Cryptography, Paris, France, May 26-28
Editor(s) Nguyen, Phong Q.
Pointcheval, David
Publication date 2010
Series Lecture Notes in Computer Science; v.6056
Conference series Practice and Theory in Public Key Cryptography Conference
Start page 124
End page 141
Total pages 18
Publisher Springer
Place of publication Berlin, Germany
Summary Recent research has shown that the single-user security of optimistic fair exchange cannot guarantee the multi-user security. This paper investigates the conditions under which the security of optimistic fair exchange in the single-user setting is preserved in the multi-user setting. We first introduce and define a property called “Strong Resolution-Ambiguity”. Then we prove that in the certified-key model, an optimistic fair exchange 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. Finally we provide a new construction of optimistic fair exchange with strong resolution-ambiguity. The new protocol is setup-free, stand-alone and multi-user secure without random oracles.
ISBN 3642130127
9783642130120
ISSN 0302-9743
Language eng
Field of Research 080303 Computer System Security
Socio Economic Objective 890202 Application Tools and System Utilities
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2010, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30034382

Document type: Conference Paper
Collection: School of Information Technology
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