[Resource Topic] 2022/1063: Rapidash: Improved Constructions for Side-Contract-Resilient Fair Exchange

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Title:
Rapidash: Improved Constructions for Side-Contract-Resilient Fair Exchange

Authors: Hao Chung, Elisaweta Masserova, Elaine Shi, Sri AravindaKrishnan Thyagarajan

Abstract:

The recent work of Chung et al. suggested new formal foundations for side-contract-resilient fair exchange protocols. In this paper, we suggest new constructions that achieve a coalition-resistant Nash equilibrium, and moreover, our constructions improve over Chung et al. in the following senses: 1) we achieve optimistic reponsiveness; and 2) we reduce the amount of collateral from the parties.

ePrint: https://eprint.iacr.org/2022/1063

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