A Lightweight Certificateless Aggregate Ring Signature Scheme for Privacy Protection in Smart Grids

A Lightweight Certificateless Aggregate Ring Signature Scheme for Privacy Protection in Smart Grids
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智能电网隐私保护的轻量级无证书聚合环签名方案

DOI:
10.1007/s11277-022-09809-5
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发表时间:
2022-06
影响因子:
2.2
通讯作者:
Yiyuan Luo
Yiyuan Luo
中科院分区:
计算机科学4区
文献类型:
--
作者:
Huiwen Wang;Liangliang Wang;Mi Wen;Kefei Chen;Yiyuan Luo

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智能电网中存在用户隐私泄露问题,恶意攻击者可能会截取或篡改用电数据,并将窃取的数据与真实的用户关联起来实施犯罪。此外,SG中的节点设备资源是有限的。针对上述问题,现有的隐私保护方案大多采用聚合签名来保证消息的完整性,提高通信效率。但是,它们不能实现用户的匿名性来阻止链接攻击,并且它们的聚合签名验证通常具有很高的计算成本。因此,我们提出了一个基于计算Diffie-Hellman问题和决策Diffie-Hellman问题的无证书聚合环签名方案(CLARS)。我们的计划是适合于在SG的隐私保护。在该方案中,使用无证书密码体制来避免密钥托管和证书管理问题,使用环签名来保证用户的无条件匿名性。此外,我们的方案被证明是不可伪造和无条件匿名适应性选择的消息攻击下,对类型I和类型II的对手在随机预言模型。与已有的无证书聚合签名方案相比,我们的CLARS方案仅需要两次对运算,具有更低的计算代价。
There exists a problem of user privacy leakage in the smart grids (SGs) that malicious attackers may intercept or tamper with electricity data and associate the stolen data with real users to commit crimes. Besides, node equipment resources in the SGs are limited. Aiming at the problems above, most of the existing privacy-preserving schemes apply aggregate signature to ensure the integrity of message and improve communication efficiency. However, they cannot realize the anonymity of users to block link attacks, and their aggregate signature verification usually has a high computational cost. Therefore, we propose a certificateless aggregate ring signature (CLARS) scheme based on computational Diffie-Hellman problem and decisional Diffie-Hellman problem. Our scheme is suitable for privacy-preserving in SGs. In this scheme, certificateless cryptosystem is used to avoid key escrow and certificates management problems and ring signature is used to ensure the unconditional anonymity of users. In addition, our scheme is proved to be unforgeability and unconditional anonymity under adaptively chosen message attacks against Type I and Type II adversaries in the random oracle model. Compared with previous certificateless aggregate signature schemes, our CLARS scheme has lower computational cost, which only needs two pairing operations.
无证书聚合签名方案可抵御完全选择密钥的攻击
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