Netinfo Security ›› 2021, Vol. 21 ›› Issue (4): 49-61.doi: 10.3969/j.issn.1671-1122.2021.04.006

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An Authentication Scheme for Conditional Privacy Preserving Based on Pseudonym in Intelligent Transportation

WANG Jian1(), ZHAO Manli1,2, CHEN Zhihao3, SHI Bo3   

  1. 1. Beijing Key Laboratory of Security and Privacy in Intelligent Transportation, Beijing Jiaotong University, Beijing 100044, China
    2. Internet Finance Department, Agricultural Bank of China, Beijing 100005, China
    3. Beijing Institute of Computer Technology and Applications, Beijing 100854, China
  • Received:2020-12-03 Online:2021-04-10 Published:2021-05-14
  • Contact: WANG Jian E-mail:wangjian@bjtu.edu.cn

Abstract:

In scenarios such as intelligent transportation and driverless driving, vehicles exchange data with road side units to realize vehicle-road coordination, which helps to improve traffic safety as well as alleviate traffic congestion. However, there are still many security problems when exchanging data, among which privacy disclosure is the main security problem it is suffering now. Most existing privacy preserving schemes, requiring computations of high complexity or tamper-proof devices of high-cost, are inefficient and cannot meet the real-time requirements of intelligent transportation applications such as driverless driving. An authentication protocol for conditional privacy preservation based on pseudonym has been proposed, including identity authentication based on chameleon Hash function and message authentication based on elliptic curve. It has been proved that the proposed scheme realizes anonymity and traceability for vehicles in the process of data exchange, and is able to resist various security attacks. The performance analysis shows that this scheme is more feasible under intelligent transportation than compared ones in performance of computing, communication and storage overhead.

Key words: intelligent transportation, pseudonym, conditional privacy preserving, identity authentication, message authentication

CLC Number: