Paper 2024/383 Original: eprint.iacr.org/2024/383 ↗
Malicious Security for SCALES: Outsourced Computation with Ephemeral Servers
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.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2025-04-08: last updated
- 2024-03-01: published
- Short URL
- https://ia.cr/2024/383
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2024/383,
author = {Anasuya Acharya and Carmit Hazay and Vladimir Kolesnikov and Manoj Prabhakaran},
title = {Malicious Security for SCALES: Outsourced Computation with Ephemeral Servers},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/383},
year = {2024},
url = {https://eprint.iacr.org/2024/383}
}