A Trust and Priority Based Code Updated Approach to Guarantee Security for Vehicles Network
A Trust and Priority Based Code Updated Approach to Guarantee Security for Vehicles Network
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DOI：
10.1109/access.2018.2872787
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发表时间：
2018
期刊：
影响因子：
3.9
通讯作者：
Xiao Liu;Wei Liu;Yuxin Liu;Houbing Song;Anfeng Liu;Xuxun Liu
中科院分区：
文献类型：
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作者：
Xiao Liu;Wei Liu;Yuxin Liu;Houbing Song;Anfeng Liu;Xuxun Liu
随着智能设备和技术的发展，车辆网络（VN）有望在智能交通系统服务中得到广泛的应用。这些设备中的软件代码通常包含可以被攻击者远程利用的漏洞，因此收集这些设备中的软件漏洞信息并及时更新程序代码对于网络安全至关重要。为了提高虚拟网络的安全性，提出了一种基于信任和优先级的完全软件更新（CSUTP）方案。该方案包括两个过程：一个是从设备到数据中心收集程序代码的状态信息的过程，另一个是从数据中心向设备分发程序代码的过程。移动的车辆在采集程序代码的状态信息时，由于存储空间有限，优先级较高。此外，移动的车辆还可以通过具有更高信任度的另一移动的车辆将状态信息传播到数据中心。从而提高了程序代码状态信息采集的成功到达率和覆盖率。在分发程序代码的过程中，数据中心选择信任度高、覆盖率高的移动的载体来分发程序代码。综合实验结果表明，CSUTP方案的性能优于随机程序代码扩散和收集方案（RPCDC）。CSUTP方案使数据覆盖率提高了25%~ 86.67%，成功到达率提高了52.119%~ 93.65%。CSUTP方案与RPCDC方案的数据冗余率约为54.07%-62.061%，CSUTP方案与RPCDC方案的传播延迟率约为80.854%-91.492%。
With the development of smart equipment and technologies, vehicular networks (VNs) are expected to have wide-range applications in intelligent transportation system services. The software code in these devices often contains bugs that can be remotely exploited by attackers, so gathering software vulnerabilities information and updating program codes timely in those devices are crucial for network security. To improve the security of VN, a Complete Software Update based on Trust and Priority (CSUTP) scheme is proposed. The scheme includes two processes: one is the process of collecting status information of program codes from devices to data centers and another is the process of disseminating program codes from data centers to devices. When collecting status information of program codes, mobile vehicles pick up the status information with higher priority due to the limited storage space. Furthermore, mobile vehicles can also disseminate the status information to data centers though another mobile vehicles which is with higher trust. Thus, the success arrival ratio and the coverage ratio of collecting status information of program codes are improved. In the process of dissemination program codes, data centers select the mobile vehicles with higher trust and higher coverage ratio to disseminate program codes. The comprehensive experimental results indicate that the performance of CSUTP scheme is better than the random program codes diffusion and collection scheme (RPCDC). The CSUTP scheme increases data coverage ratio by 25%–86.67% and success arrival ratio by 52.119%–93.65%. The ratio of data redundancy in the CSUTP scheme to the RPCDC scheme is about 54.07%–62.061%, and the ratio of dissemination delay in the CSUTP scheme to the RPCDC scheme is about 80.854%–91.492%.