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基于多密钥全同态加密方案的无CRS模型安全多方计算

基于多密钥全同态加密方案的无CRS模型安全多方计算

https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_mmxb202102007

基于多密钥全同态加密方案的无CRS模型安全多方计算

About this item

Full title

基于多密钥全同态加密方案的无CRS模型安全多方计算

Author / Creator

Publisher

Beijing: Chinese Association for Cryptologic Research, Journal of Cryptologic Research

Journal title

Journal of Cryptologic Research, 2021-04, Vol.8 (2), p.273-281

Language

Chinese

Formats

Publication information

Publisher

Beijing: Chinese Association for Cryptologic Research, Journal of Cryptologic Research

More information

Scope and Contents

Contents

TP309.7; 利用多密钥全同态加密方案(multi-key fully homomorphic encryption scheme,MFHE)可以设计一个安全多方计算协议.在公共随机串(common random string,CRS)模型中构造的安全多方计算协议,每一个参与方在生成公钥阶段要用到一个公共随机矩阵,这削弱了每个人独立生成公钥的能力.本文首先设计一个无CRS的基于GSW的安全多方计算协议,与已有的同类协议相比,由于我们的方案利用了编码操作,从而把单密钥密文扩展成多密钥密文,提高了效率,并将解密噪音从2 m4+m mN Bχ 降低到(2+m)mN Bχ.我们也以LWE假设为依据构造了一个无CRS模型的3轮安全多方计算协议,并证明其在半恶意敌手的情形下是安全的.

Alternative Titles

Full title

基于多密钥全同态加密方案的无CRS模型安全多方计算

Authors, Artists and Contributors

Identifiers

Primary Identifiers

Record Identifier

TN_cdi_wanfang_journals_mmxb202102007

Permalink

https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_mmxb202102007

Other Identifiers

ISSN

2097-4116,2095-7025

DOI

10.13868/j.cnki.jcr.000436

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