CryptoDB
Multi-Party Homomorphic Secret Sharing and Sublinear MPC from Sparse LPN
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Presentation: | Slides |
Conference: | CRYPTO 2023 |
Abstract: | Over the past few years, we have seen the powerful emergence of homomorphic secret sharing (HSS) as a compelling alternative to fully homomorphic encryption (FHE), due to its efficiency benefits and its feasibility from an array of standard assumptions. However, all previously known HSS schemes, with the exception of schemes built from FHE or indistinguishability obfuscation (iO), can only support two parties.
In this work, we give the first construction of a \emph{multi-party} HSS scheme for a non-trivial function class, from an assumption not known to imply FHE. In particular, we construct an HSS scheme for an \emph{arbitrary} number of parties with an \emph{arbitrary} corruption threshold, supporting evaluations of |
BibTeX
@inproceedings{crypto-2023-33220, title={Multi-Party Homomorphic Secret Sharing and Sublinear MPC from Sparse LPN}, publisher={Springer-Verlag}, doi={10.1007/978-3-031-38545-2_11}, author={Quang Dao and Yuval Ishai and Aayush Jain and Huijia Lin}, year=2023 }