Abstract
With relatively few exceptions, the literature on efficient (practical) secure computation has focused on secure two-party computation (2PC). It is, in general, unclear whether the techniques used to construct practical 2PC protocols—in particular, the cut-and-choose approach—can be adapted to the multi-party setting.
In this work we explore the possibility of using cut-and-choose for practical secure three-party computation. The three-party case has been studied in prior work in the semi-honest setting, and is motivated by the observation that real-world deployments of multi-party computation are likely to involve few parties. We propose a constant-round protocol for three-party computation tolerating any number of malicious parties, whose computational cost is only a small constant worse than that of state-of-the-art two-party protocols.
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Choi, S.G., Katz, J., Malozemoff, A.J., Zikas, V. (2014). Efficient Three-Party Computation from Cut-and-Choose. In: Garay, J.A., Gennaro, R. (eds) Advances in Cryptology – CRYPTO 2014. CRYPTO 2014. Lecture Notes in Computer Science, vol 8617. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44381-1_29
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