Paper 2024/383
Malicious Security for SCALES: Outsourced Computation with Ephemeral Servers
, Bar-Ilan University, Bar-Ilan University, Georgia Institute of TechnologyAbstract
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
- A major revision of an IACR publication in CRYPTO 2024
- Keywords
- SCALESMPC with Ephemeral ServersMalicious SecurityDishonest MajorityRerandomizable Garbled Circuits
- Contact author(s)
-
acharya @ biu ac il
carmit hazay @ biu ac il
kolesnikov @ gatech edu
mp @ cse iitb ac in - History
- 2024-05-30: revised
- 2024-03-01: received
- See all versions
- Short URL
- https://ia.cr/2024/383
- License
-
CC BY
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},
note = {\url{https://eprint.iacr.org/2024/383}},
url = {https://eprint.iacr.org/2024/383}
}
