A Revocable Group Signatures Scheme to Provide Privacy-Preserving Authentications
A Revocable Group Signatures Scheme to Provide Privacy-Preserving Authentications
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DOI：
10.1007/s11036-019-01459-5
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发表时间：
2020-01
影响因子：
3.8
通讯作者：
Xiaohan Yue;Mengzhe Xi;Bing Chen;Mingchao Gao;Yuan He;Jian Xu
中科院分区：
文献类型：
--
作者：
Xiaohan Yue;Mengzhe Xi;Bing Chen;Mingchao Gao;Yuan He;Jian Xu
尽管近年来提出了许多可撤销的组签名方案，但向后安全性（防止被撤销的签名者在未来一段时间内生成组签名）仍然没有受到关注。本文引入了一个包含后向安全定义的安全模型，并提出了一个可撤销的组签名方案，该方案比以前的方案更高效、更可扩展，特别是对于执行频率更高的签名和验证算法。此外，考虑到组管理员的工作量较大，我们采用去中心化的模型将整个组划分为组，使我们的方案更具可扩展性，从而在实际应用中更加实用。
Despite of having many revocable group signatures schemes proposed in recent years, backward security, which prevents a revoked signer from generating group signatures for future time periods, was still missing the concern. In this paper, we introduce a security model that contains the definition of backward security, and propose a revocable group signatures scheme that is more efficient and scalable compared to previous ones, especially for Sign and Verify algorithms, which are performed much more frequently than others. In addition, considering the heavy workload of the group manager, we divide the whole group into groups by employing a decentralized model to make our scheme more scalable, and thus more practical in real-life applications.