A Location Privacy Protection Scheme Based on Hybrid Blockchain

doi:10.3969/j.issn.1671-1122.2024.02.006

Abstract

Abstract:

In the location privacy service of the Internet of Vehicles, mainstream models require communication through a trusted third party, but such models’ third-party servers are vulnerable to attacks by malicious users, which poses a risk of privacy leakage. Based on a hybrid blockchain, this paper proposed a new location privacy protection scheme. The scheme divided available location points on the map using longitude and latitude, and waited for users to select location points to represent their true location using K-anonymity technology to complete preliminary anonymity, and then participated in the location privacy protection service of the hybrid blockchain. Throughout the entire process of the location privacy service, user credit mechanisms and hybrid blockchain information isolation mechanisms were used to further enhance the user’s location privacy protection level. Simulation results show that compared to existing schemes, this scheme can shorten time costs.

Key words: location privacy, hybrid blockchain, K-anonymity, credit mechanism, information isolation

CLC Number:

TP309

HE Yefeng, QUAN Jiahui, LIU Yan. A Location Privacy Protection Scheme Based on Hybrid Blockchain[J]. Netinfo Security, 2024, 24(2): 229-238.

Figures/Tables 10

References 23

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序号	参数	值
1	隐私保护等级K	5~25
2	车辆节点数/个	200
3	平均车速/km/h	60
4	模拟运行时间/s	2000
5	匿名半径/m	100~500