VANET中保护隐私的无证书聚合签名方案

Nan Zhao, Guoan Zhang
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引用次数: 9

摘要

针对车辆自组织网络(VANET)中通信安全性和效率普遍存在的问题,提出了一种基于无证书公钥密码体制和聚合签名的无证书聚合签名(CLAS)隐私保护方案。该方案在随机预言模型下可以抵御两种不同类型的攻击,满足通信消息的不可伪造性和车辆的可追溯性和匿名性。该方案避免了密钥托管问题和证书管理问题。基于双线性配对操作,通过聚合签名实现对多条消息的聚合验证。我们定量分析了该方案的计算开销,并定义了一个新的计算效率变量。与其他方案相比,我们的方案在城市道路上进行V2I通信时效率更高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Privacy-Protected Certificateless Aggregate Signature Scheme in VANET
We propose a certificateless aggregate signature (CLAS) scheme for privacy protection based on the certificateless public key cryptosystem and aggregate signature aiming at the common problems of communication security and efficiency in vehicular ad hoc network (VANET). The scheme can resist two different types of adversary attacks under the random oracle model and satisfy the unforgeability of communication messages as well as traceability and anonymity of vehicles. The scheme avoids the key escrow problem and certificate management. Based on the bilinear pairing operations, the aggregation verification of multiple messages is realized through aggregation signature. We quantitatively analyze the computational overhead of the scheme and define a new variable of computational efficiency. Our scheme is proved to be more efficient when V2I communication is carried out in urban roads compared with other schemes.
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