Fluid MPC: Secure Multiparty Computation with Dynamic Participants

Fluid MPC: Secure Multiparty Computation with Dynamic Participants
复制标题

Fluid MPC:具有动态参与者的安全多方计算

DOI:
10.1007/978-3-030-84245-1_4
复制
发表时间:
2021
期刊:
CRYPTO 2021
影响因子:
--
通讯作者:
Choudhuri, A.R.
Choudhuri, A.R.
中科院分区:
--
文献类型:
--
作者:
Choudhuri, A.R.

文献摘要

参考文献

被引文献

相似文献

现有的安全多方计算(MPC)方法要求所有参与者在协议的整个持续时间内提交。随着人们对MPC的兴趣不断增长,人们不可避免地会希望使用它来评估日益复杂的功能,从而导致计算时间跨越几个小时或几天。这样的场景需要MPC的动态参与模型,参与者可以根据需要灵活地离线,并在有可用的计算资源时(重新)加入。这样的模型还可以通过促进“MPC即服务”范式来实现对隐私保护计算的民主化,即在代表客户执行计算的志愿者运营的网络(如区块链,其中动态是固有的)中部署MPC。在这项工作中,我们开始研究流体MPC,其中各方可以动态加入和离开计算。每个参与者所需的最低承诺被称为流动性,以必须保持在线的通信轮数来衡量。我们的贡献有三个方面:我们提供流体MPC的正式处理,探索各种可能的建模选择。我们在诚实多数设置下构建信息论流体MPC协议。我们的协议实现了最大的流动性,这意味着一方可以在一轮接收和发送消息后退出计算。我们实现了我们的协议,并在多个网络设置中进行了测试。
Existing approaches to secure multiparty computation (MPC) require all participants to commit to the entire duration of the protocol. As interest in MPC continues to grow, it is inevitable that there will be a desire to use it to evaluate increasingly complex functionalities, resulting in computations spanning several hours or days.Such scenarios call for adynamicparticipation model for MPC where participants have the flexibility to go offline as needed and (re)join when they have available computational resources. Such a model would also democratize access to privacy-preserving computation by facilitating an “MPC-as-a-service” paradigm—the deployment of MPC in volunteer-operated networks (such as blockchains, where dynamism is inherent) that perform computation on behalf of clients.In this work, we initiate the study offluid MPC, where parties can dynamically join and leave the computation. The minimum commitment required from each participant is referred to asfluidity, measured in the number of rounds of communication that it must stay online. Our contributions are threefold:We provide a formal treatment of fluid MPC, exploring various possible modeling choices.We construct information-theoretic fluid MPC protocols in the honest-majority setting. Our protocols achievemaximal fluidity, meaning that a party can exit the computation after receiving and sending messages in one round.We implement our protocol and test it in multiple network settings.
高效多方计算:通过安全 SIMD 电路从被动安全到主动安全
DOI: --
发表时间: 2015
期刊: Annual International Cryptology Conference
影响因子: --
作者:
Daniel Genkin;Yuval Ishai;Antigoni Polychroniadou
通讯作者: Antigoni Polychroniadou
DOI: 10.1145/3133956.3133999
发表时间: 2017-10
期刊: Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security
影响因子: --
作者:
Yehuda Lindell;Ariel Nof
通讯作者: Yehuda Lindell;Ariel Nof
DOI: 10.1007/978-3-319-93387-0_17
发表时间: 2018-07
期刊: IACR Cryptol. ePrint Arch.
影响因子: --
作者:
P. S. Nordholt;Meilof Veeningen
通讯作者: P. S. Nordholt;Meilof Veeningen
DOI: 10.1145/3319535.3339811
发表时间: 2019-11
期刊: Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security
影响因子: --
作者:
Jun Furukawa;Yehuda Lindell
通讯作者: Jun Furukawa;Yehuda Lindell
作为 Web 应用程序进行分析的安全 MPC
DOI: --
发表时间: 2016
期刊: IEEE Cybersecurity Development
影响因子: --
作者:
A. Lapets;Nikolaj Volgushev;Azer Bestavros;Frederick Jansen;Mayank Varia
通讯作者: Mayank Varia