期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：66
期号：1
出版社：Journal of Theoretical and Applied
摘要：Safety applications in Vehicular Ad hoc Networks (VANET) needs to be handled with at most care such that no adversary will be allowed to intrude the privacy of the user. Replacement of original IDs with pseudo IDs makes this possible. Generating and storing a set a pseudo IDs by the trusted authority in the tamper proof device of each vehicle and changing them at fixed intervals paves way for an adversary to trace the original ID of the vehicle. And, the space required for storing all the generated pseudo IDs in the tamper proof device of each vehicle is huge. In this paper, we propose a novel approach where pseudo IDs are generated dynamically based on the location information when an event is to be reported and verified by the distributed Traffic Management System (TMS). If a safety message send by a vehicle is detected to be malicious by the TMS, the safety message is forwarded to the Trusted Authority (TA) to map the original ID for the corresponding pseudo ID. The mapped original ID is forwarded to the TMS to take necessary action. Since pseudo ID generation is based on the password provided for driver authentication, in addition a distributed password preservation method is introduced, which preserves the password even when a TA is compromised. Experimental analysis shows that this scheme provides better privacy and conditional traceability compared to existing approaches.
关键词：Pseudo ID; Privacy; Trusted Authority; Password; Vehicular Ad hoc Network
