Secure obfuscation for encrypted threshold signatures

Yahong LI; Caifen WANG; Yulei ZHANG; Xiaodong YANG; Haiyan HUANG

doi:10.11959/j.issn.1000-436x.2020129

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Secure obfuscation for encrypted threshold signatures

Papers | 更新时间：2024-06-05

- Secure obfuscation for encrypted threshold signatures
- Journal on Communications Vol. 41, Issue 6, Pages: 61-69(2020)
- 作者机构：
  
  1. 兰州交通大学电子与信息工程学院，甘肃兰州 730070
  2. 西北师范大学计算机科学与工程学院，甘肃兰州 730070
  3. 深圳技术大学大数据与互联网学院，广东深圳 518118
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61063041);The National Natural Science Foundation of China(61901201);The Youth Science Foundation of Lanzhou Jiaotong University(2018002)
- DOI：10.11959/j.issn.1000-436x.2020129
  CLC： TP309
- Online First：2020-06，
  
  Published：25 June 2020
- 稿件说明：
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Yahong LI, Caifen WANG, Yulei ZHANG, et al. Secure obfuscation for encrypted threshold signatures[J]. Journal on Communications, 2020, 41(6): 61-69.
DOI：

Yahong LI, Caifen WANG, Yulei ZHANG, et al. Secure obfuscation for encrypted threshold signatures[J]. Journal on Communications, 2020, 41(6): 61-69. DOI： 10.11959/j.issn.1000-436x.2020129.

摘要

针对门限签名密钥泄露的安全问题，首先提出了一个加密门限签名功能，并对所提功能混淆，混淆电路的输出可交给任意第三方执行，不会泄露门限签名密钥的信息。然后定义了加密门限签名功能和混淆器的安全模型，存在不可伪造性和平均情况虚拟黑盒性质，并对其正确性和安全性进行证明。理论和仿真实验分析表明，对加密门限签名的混淆具有可行性。

Abstract

Aiming at the key leakage security problem of the threshold signature

an encrypted threshold signature functionality was firstly proposed and securely obfuscated.The output of obfuscated circuit could be implemented by any third party without revealing the private key of threshold signature.Secondly

the security models of encrypted threshold signature functionality and the obfuscator were defined

such as the existential unforgeablity and the average case virtual black box property

and its correctness and security were proved.The analyses of theory and simulation experiment show that the obfuscation for encrypted threshold signature has feasibility.

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references

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