论文部分内容阅读
车联网中,道路上行驶的车辆每时每刻接收到的需要验证的信息量是非常大的,因此,提高车联网中群签名方案的验证效率受到了广泛的关注.基于Zhao等人提出的一个车联网中高效撤销的群签名方案,本文应用批量验证思想,对该方案进行了改进,提出了一个车联网中基于Schnorr签名算法的高效撤销的批量验证群签名方案,使方案的验证效率有了很大提升.在方案的性能分析中我们得到,该方案的计算负载中主要消耗时间的幂运算的执行次数与批量验证中消息数成线性比.针对这个问题,本文又提出了一个车联网中基于DSA签名算法的高效撤销的批量验证群签名方案.在该方案中,幂运算的执行次数与批量验证中的消息数无关,是一个常数,从而使计算负载有了大幅度的降低,验证效率有了进一步的提高.论文对这两个方案都进行了安全性分析和性能比较,证明了这两个方案都是安全又高效的.通过对两个批量验证方案的性能进行比较,我们得到结论,第一个方案适合于车流量较小的地带,第二个方案适用于车流量大的地方.本文中提出的两个方案都是Type1型的批量验证,实际生活中,Type2和Type3型的批量验证也很有应用前景.因此,将来的工作中,可以对Type2和Type3型的批量验证进一步展开研究工作.
In the car networking, the amount of information that needs to be verified at all times is very large, therefore, improving the verification efficiency of the group signature scheme in the car networking has been widely concerned.According to Zhao et al A group signature scheme with efficient revocation in car networking is applied in this paper. The idea of batch verification is used in this paper to improve the scheme. A batch verification signature scheme with efficient revocation based on Schnorr signature algorithm in car networking is proposed. The verification efficiency of scheme is A great improvement.In the performance analysis of the program we get, the program’s calculation of the load in the main time-consuming exponentiation of the number of operations and the number of messages in batch verification linear than the number of.In this paper, this paper presents a car networking Which is based on the DSA signature algorithm.A lot of executions of exponentiation are unrelated to the number of messages in batch verification, which is a constant, so that the computational load has been greatly reduced, and the verification The efficiency has been further improved.This paper has carried out both the security analysis and performance comparison of these two schemes and proved that both schemes Safe and efficient.By comparing the performance of the two batch verification schemes, we conclude that the first scheme is suitable for the areas with small traffic flow and the second scheme is suitable for the areas with large traffic flow.In this paper, Both schemes are batch verification of Type1, and batch verification of Type2 and Type3 is also very promising in real life, so further research can be carried out on batch verification of Type2 and Type3 in future work.