An Efficient Certificateless Aggregate Signature Scheme Designed for VANET |
| |
Authors: | Cui Li Gang Wu Lipeng Xing Feng Zhu Liang Zhao |
| |
Affiliation: | 1.College of Information and Communication, National University of Defense Technology, Xi’an, China.
2 Ansys, Southpointe 2600 ANSYS Drive Canonsburg, Commonwealth of Pennsylvania, 15317, USA. |
| |
Abstract: | The Vehicular Ad-hoc Network (VANET) is the fundamental of smart
transportation system in the future, but the security of the communication between
vehicles and vehicles, between vehicles and roadside infrastructures have become
increasingly prominent. Certificateless aggregate signature protocol is used to address
this security issue, but the existing schemes still have many drawbacks in terms of
security and efficiency: First, many schemes are not secure, and signatures can be forged
by the attacker; Second, even if some scheme are secure, many schemes use a large
number of bilinear pairing operation, and the computation overhead is large. At the same
time, the length of the aggregated signature also increases linearly with the increase of
user numbers, resulting in a large communication overhead. In order to overcome the
above challenges, we propose a new certificateless aggregate signature scheme for
VANET, and prove the security of the scheme under the random oracle model. The new
scheme uses pseudonym to realize the conditional privacy protection of the vehicle’s
information. The new scheme does not use bilinear pairing operation, and the calculation
efficiency is high. At the same time, the length of the aggregate signature of the new
scheme is constant, thereby greatly reducing the communication and storage overhead.
The analysis results demonstrate that the new scheme is not only safer, but also superior
in performance to the recent related schemes in computation overhead and
communication cost. |
| |
Keywords: | Vehicular Ad-hoc network certificateless cryptography aggregate signature random oracle model |
|
| 点击此处可从《》浏览原始摘要信息 |
|
点击此处可从《》下载全文 |
|