密码学报（中英文）2025，Vol.12Issue(2)：398-413,16.DOI:10.13868/j.cnki.jcr.000770
车联网中改进的基于无证书聚合签名的条件隐私保护认证方案
An Improved Conditional Privacy-Preserving Authentication Scheme Based on Certificateless Aggregate Signature for VANETs
摘要
Abstract
In order to solve the problem of authenticity and integrity of message transmission in vehicular communication and to improve the computational efficiency of authentication,we analyze the security of a conditional privacy-preserving batch authentication scheme based on certificateless aggregate signature in VANETs,and the result shows that the scheme is not resistant to forgery attacks.Aiming at the vulnerability,this study proposes a security-enhanced improvement scheme,making the security to strongly unforgeable against adaptively chosen message attacks by using a security model with stronger adversary,which is more in compliance with the requirements of practical environments.The security of the proposed scheme is proved under the random oracle model.In addition,the proposed scheme uses the idea of onion routing in applying pseudonyms and uses the roadside unit as a forwarding node,which makes the scheme resistant to traffic analysis and eavesdropping attacks,improving the protection of the user's personal privacy.The performance is evaluated by comparing with other existing schemes.According to the simulation results,the proposed scheme is on the same level with the most efficient schemes in terms of signature,single signature verification,and communication overhead,while the computational efficiency of batch verification has been significantly improved.These demonstrate that the proposed scheme is more efficient and more secure,and also more practical in the application environment of VANETs.关键词
无证书聚合签名/条件隐私保护/车联网/洋葱路由/批量验证Key words
certificateless aggregate signature/conditional privacy-preserving/vehicular ad hoc network/onion routing/batch verification分类
信息技术与安全科学引用本文复制引用
许盛伟,喻书涵,白怡婕,岳梓岩,刘怡龙..车联网中改进的基于无证书聚合签名的条件隐私保护认证方案[J].密码学报（中英文）,2025,12(2):398-413,16.基金项目
中央高校基本科研业务费资金(3282023004) （3282023004）
国家重点研发计划(2022YFB3104402)the Fundamental Research Funds for the Central Universities of China(3282023004) （2022YFB3104402）
National Key Research and Development Program of China(2022YFB3104402) （2022YFB3104402）
