Optimistic Fair Exchange Based on Publicly Verifiable Secret Sharing

@inproceedings{Avoine2004OptimisticFE,
  title={Optimistic Fair Exchange Based on Publicly Verifiable Secret Sharing},
  author={Gildas Avoine and Serge Vaudenay},
  booktitle={ACISP},
  year={2004}
}
In this paper we propose an optimistic two-party fair exchange protocol which does not rely on a centralized trusted third party. Instead, the fairness of the protocol relies on the honesty of part of the neighbor participants. This new concept, which is based on a generic verifiable secret sharing scheme, is particularly relevant in networks where centralized authority can neither be used on-line nor off-line. 
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