Secure and Efficient Authentication and Key Agreement Protocol Using Certificateless Aggregate Signature for Cloud Service Oriented VANET

ZHANG Wen-fang; LEI Li-ting; WANG Xiao-min; WANG Yu

doi:10.3969/j.issn.0372-2112.2020.09.020

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Secure and Efficient Authentication and Key Agreement Protocol Using Certificateless Aggregate Signature for Cloud Service Oriented VANET

更新时间：2025-12-08

- Secure and Efficient Authentication and Key Agreement Protocol Using Certificateless Aggregate Signature for Cloud Service Oriented VANET
- Acta Electronica Sinica Vol. 48, Issue 9, Pages: 1814-1823(2020)
- 作者机构：
  
  西南交通大学信息科学与技术学院,四川,成都,610031
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61872302);Project of Sichuan Science and Technology Program (No.2018GZ0195, No.2019YFH0097, No.2019YFG0502)
- DOI：10.3969/j.issn.0372-2112.2020.09.020
  CLC： TP393
- Published Online：25 September 2020，
  
  Published：2020
- 稿件说明：
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ZHANG Wen-fang, LEI Li-ting, WANG Xiao-min, et al. Secure and Efficient Authentication and Key Agreement Protocol Using Certificateless Aggregate Signature for Cloud Service Oriented VANET[J]. Acta Electronica Sinica, 2020, 48(9): 1814-1823.
DOI：

ZHANG Wen-fang, LEI Li-ting, WANG Xiao-min, et al. Secure and Efficient Authentication and Key Agreement Protocol Using Certificateless Aggregate Signature for Cloud Service Oriented VANET[J]. Acta Electronica Sinica, 2020, 48(9): 1814-1823. DOI： 10.3969/j.issn.0372-2112.2020.09.020.

摘要

针对目前车联网认证密钥协商协议效率低下以及车辆公私钥频繁更新的问题，提出一个基于无证书聚合签名的车联网匿名认证与密钥协商协议.本方案通过引入临时身份和预签名机制实现对车辆的隐私保护以及匿名认证，同时通过构建临时身份索引数据库，实现可信中心对可疑车辆的事后追查，满足车辆的条件匿名性要求.此外，本方案中车辆的公私钥不随其临时身份动态改变，有效避免了已有方案公私钥频繁更新带来的系统开销.同时，为了提供高效的批量认证，采用无双线性对的聚合签名技术，实现了车辆签名的动态聚合和转发，有效降低了签名传递的通信量和云服务器的验证开销.本文方案在eCK模型和CDH问题假设下被证明是形式化安全的.

Abstract

In order to solve low efficiency and frequent updates of vehicles' public keys and private keys

a certificateless aggregate signature authentication and key agreement scheme with anonymity in vehicular Ad-Hoc network (VANET) is proposed. In our scheme

by using temporary identity and pre-signature

vehicles' privacy protection and anonymity authentication can be realized. On the other hand

the suspected vehicles can be tracked by the trust authority with the index database of the temporary identity to satisfy conditional anonymity. Meantime

if the temporary identity is changed

it is not necessary to update vehicles' public keys and private keys in this scheme

so the cost of system can be reduced. Moreover

the pairing-free aggregate signature technology is used to improve the efficiency further

which makes the number of signatures and the verification cost of the server be decreased. It is shown that our protocol is provably secure in eCK model under the computational Diffie-Hellman (CDH) assumption.

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