Round-Optimal and Communication-Efficient Multiparty Computation
Round-Optimal and Communication-Efficient Multiparty Computation
复制标题
轮优化和通信高效的多方计算
DOI:
10.1007/978-3-031-06944-4_3
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Zikas, Vassilis
中科院分区:
文献类型:
--
作者:
Ciampi, Michele;Ostrovsky, Rafail;Waldner, Hendrik;Zikas, Vassilis
Typical approaches for minimizing the round complexity of multiparty computation (MPC) come at the cost of increased communication complexity (CC) or the reliance on setup assumptions. A notable exception is the recent work of Ananthet al.[TCC 2019], which used Functional Encryption (FE) combiners to obtain a round optimal (two-round) semi-honest MPC in the plain model with a CC proportional to the depth and input-output length of the circuit being computed—we refer to such protocols ascircuit scalable. This leaves open the question of obtaining communication efficient protocols that are secure againstmaliciousadversaries in the plain model, which we present in this work. Concretely, our two main contributions are:1) We provide a round-preserving black-box compiler that compiles a wide class of MPC protocols intocircuit-scalablemaliciously secure MPC protocols in the plain model, assuming (succinct) FE combiners.2) We provide a round-preserving black-box compiler that compiles a wide class of MPC protocols intocircuit-independent—i.e., with a CC that depends only on the input-output length of the circuit—maliciously secure MPC protocols in the plain model, assuming Multi-Key Fully-Homomorphic Encryption (MFHE). Our constructions are based on a new compiler that turns a wide class of MPC protocols intok-delayed-input function MPC protocols (a notion we introduce), where the function that is being computed is specified only in thek-th round of the protocol.As immediate corollaries of our two compilers, we derive (1) the first round-optimal and circuit-scalable maliciously secure MPC, and (2) the first round-optimal and circuit-independent maliciously secure MPC in the plain model. The latter MPC achieves the best to-date CC for a round-optimal malicious MPC protocol. In fact, it is even communication-optimal when the output size of the function being evaluated is smaller than its input size (e.g., for boolean functions). All of our results are based on standard polynomial time assumptions.
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DOI:
--
发表时间:
2019
期刊:
Theory of Cryptography Conference
影响因子:
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作者:
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通讯作者:
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影响因子:
2.5
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DOI:
--
发表时间:
2020
期刊:
EUROCRYPT 2020: Advances in Cryptology – EUROCRYPT 2020
影响因子:
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DOI:
10.1007/978-3-319-78375-8_17
发表时间:
2018-04
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
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作者:
Fabrice Benhamouda;Huijia Lin
通讯作者:
Fabrice Benhamouda;Huijia Lin
DOI:
10.1007/978-3-030-64378-2_11
发表时间:
2020
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
作者:
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通讯作者:
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