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 Public key cryptography - PKC 2010 : 13th International Conference on Practice and Theory of Public-Key Cryptography, Paris, France, May 26-28, 2010 : proceedings, Springer, New York, N. Y., 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
Title of book Public key cryptography - PKC 2010 : 13th International Conference on Practice and Theory of Public-Key Cryptography, Paris, France, May 26-28, 2010 : proceedings
Editor(s) Nguyen, Phong Q.
Pointcheval, David
Publication date 2010
Series Lecture Notes in Computer Science; v.6056
Chapter number 8
Total chapters 29
Start page 124
End page 141
Total pages 18
Publisher Springer
Place of Publication New York, N. Y.
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 B1 Book chapter
Copyright notice ©2010, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30034382

Document type: Book Chapter
Collection: School of Information Technology
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