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

被引：0
|
作者：
Zhang W.-F. [1 ]
Lei L.-T. [1 ]
Wang X.-M. [1 ]
Wang Y. [1 ]
机构：
[1] School of Information Science and Technology, Southwest Jiaotong University, Chengdu, 610031, Sichuan
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2020年 / 48卷 / 09期
关键词：
Aggregate signature; Authentication and key agreement; Certificateless; Cloud service; Conditional anonymity; Vehicular Ad-Hoc network;
D O I：
10.3969/j.issn.0372-2112.2020.09.020
中图分类号：
学科分类号：
摘要：
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. © 2020, Chinese Institute of Electronics. All right reserved.
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页码：1814 / 1823
页数：9
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