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Malicious Security for SCALES: Outsourced Computation with Ephemeral Servers
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Presentation: | Slides |
Conference: | CRYPTO 2024 |
Abstract: | SCALES (Small Clients And Larger Ephemeral Servers) model is a recently proposed model for MPC (Acharya et al., TCC 2022). While the SCALES model offers several attractive features for practical large-scale MPC, the result of Acharya et al. only offered semi-honest secure protocols in this model. We present a new efficient SCALES protocol secure against malicious adversaries, for general Boolean circuits. We start with the base construction of Acharya et al. and design and use a suite of carefully defined building blocks that may be of independent interest. The resulting protocol is UC-secure without honest majority, with a CRS and bulletin-board as setups, and allows publicly identifying deviations from correct execution. |
BibTeX
@inproceedings{crypto-2024-34181, title={Malicious Security for SCALES: Outsourced Computation with Ephemeral Servers}, publisher={Springer-Verlag}, doi={10.1007/978-3-031-68400-5_1}, author={Anasuya Acharya and Carmit Hazay and Vladimir Kolesnikov and Manoj Prabhakaran}, year=2024 }