Welcome to the resource topic for 2017/257
Title:
Threshold Fully Homomorphic Encryption
Authors: Aayush Jain, Peter M. R. Rasmussen, Amit Sahai
Abstract:We formally define and give the first construction of (leveled) threshold fully homomorphic encryption for any access structure induced by a monotone boolean formula and in particular for the threshold access structure. Our construction is based on the learning with errors assumption and can be instantiated with any existing homomorphic encryption scheme that satisfies fairly general conditions, such as Gentry, Sahai, Waters (CRYPTO 2013) and Brakerski, Gentry, Vaikuntanathan (ITCS 2012). From threshold homomorphic encryption, we construct function secret sharing and distributed pseudorandom functions for the aforementioned access structures. No such constructions were known prior to this work.
ePrint: https://eprint.iacr.org/2017/257
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