An Aggregate Anonymous Credential Scheme in C-ITS for Multi-Service with Revocation
An Aggregate Anonymous Credential Scheme in C-ITS for Multi-Service with Revocation
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DOI：
10.1109/trustcom53373.2021.00074
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发表时间：
2021-10
期刊：
影响因子：
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通讯作者：
Xiaohan Yue;Lixin Yang;Xibo Wang;Shuaishuai Zeng;Jian Xu;Shi Bai;Yuan He
中科院分区：
文献类型：
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作者：
Xiaohan Yue;Lixin Yang;Xibo Wang;Shuaishuai Zeng;Jian Xu;Shi Bai;Yuan He
协同智能交通系统（C-ITS）是一种先进的应用程序，提供各种服务，使一个更安全，更有效，更方便的交通系统。当在C-ITS中请求服务时，隐私保护对于避免跟踪发送包含其认证信息的连续消息的车辆的尝试至关重要。本文提出了一种基于完全子树方法的基于属性证书的可验证的隐私保护认证方案。与现有的C-ITS中的匿名证书不同，我们的方案支持属性的聚合，这有利于构造一个恒定大小的证书，多服务。聚合证书不仅保持了身份的隐私保护，还能够提高证书的提交效率。对于非法车辆，我们的方案通过使用完全子树方法在未撤销的时期内撤销并禁止他们生成有效签名。此外，我们提出了安全性和性能方面的分析，分别。前者着重于身份的隐私保护、不可链接性、不可伪造性、可复制性和抗重放攻击等安全目标;后者表明我们的方案对C-ITS更有实际意义。
Cooperative intelligent transport systems (C-ITS) are advanced applications providing various services to enable a more secure, efficient, and accessible transportation system. When requesting services in C-ITS, privacy-preserving is crucial to avoid attempts in tracking vehicles who send continuous messages containing their authentication information. In this paper, we propose a revocable privacy-preserving authentication scheme through attribute-based credentials with complete subtree method. Differing from the existing anonymous credential works in C-ITS, our scheme supports the aggregation of attributes which facilitates the construction of a constant-size credential for multi-service. Not only maintaining the privacy-preserving of identity, the aggregate credential is also able to improve the efficiency of credential presentation. For illegal vehicles, our scheme revokes and disallows them to generate valid signatures via using complete subtree method in the non-revoked epoch. Moreover, we present analyses on aspects of security and performance, respectively. The former focuses on the security goals including privacy-preserving of identity, unlinkability, unforgeability, revocability and anti-replay attacks; while the latter shows that our scheme makes more practical sense for C-ITS.