Fair exchange with a semi-trusted third party (extended abstract)
Proceedings of the 4th ACM conference on Computer and communications security
An Optimistic Multi-party Fair Exchange Protocol with Reduced Trust Requirements
ICISC '01 Proceedings of the 4th International Conference Seoul on Information Security and Cryptology
Optimistic Fair Exchange with Transparent Signature Recovery
FC '01 Proceedings of the 5th International Conference on Financial Cryptography
Secure Group Barter: Multi-party Fair Exchange with Semi-Trusted Neutral Parties
FC '98 Proceedings of the Second International Conference on Financial Cryptography
Multi-Party Fair Exchange with an Off-Line Trusted Neutral Party
DEXA '99 Proceedings of the 10th International Workshop on Database & Expert Systems Applications
An Efficient Non-repudiation Protocol
CSFW '97 Proceedings of the 10th IEEE workshop on Computer Security Foundations
A fair non-repudiation protocol
SP '96 Proceedings of the 1996 IEEE Symposium on Security and Privacy
Optimistic fair exchange of digital signatures
IEEE Journal on Selected Areas in Communications
Exclusions and related trust relationships in multi-party fair exchange protocols
Electronic Commerce Research and Applications
Fair Exchange Is Incomparable to Consensus
Proceedings of the 5th international colloquium on Theoretical Aspects of Computing
Multiparty nonrepudiation: A survey
ACM Computing Surveys (CSUR)
Replay attack in a fair exchange protocol
ACNS'08 Proceedings of the 6th international conference on Applied cryptography and network security
FC'05 Proceedings of the 9th international conference on Financial Cryptography and Data Security
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In this paper we define a property for multi-party protocols called exclusion-freeness. In multi-party protocols respecting the strongest definition of this property, participants are sure that they will not be excluded from a protocol's execution and, consequently, they do not have to trust each other any more. We study this property on a well-known multi-party fair exchange protocol with an online trusted third party and we point out two attacks on this protocol breaking the fairness property and implying excluded participants. Finally, we propose a new multi-party fair exchange protocol with an online trusted third party respecting the strong exclusion-freeness property.