Identity based efficient anonymous batch authentication method in IOV (Internet of Vehicles) environment

Abstract

The invention discloses an identity based efficient anonymous batch authentication method in an IOV (Internet of Vehicles) environment. The identity based efficient anonymous batch authentication method in the IOV environment comprises an initial handshake module, a message signature module, a batch authentication module, an identity tracing module, a group key generation module and a group message signature and authentication module. According to the identity based efficient anonymous batch authentication method in the IOV environment, authentication between vehicles and infrastructures and authentication between vehicles can be realized, no tamper-proofing device is depended, privacy protection is realized by utilizing a pseudonymous name, conditional privacy protection is realized as a TA (Trusted Authority) can trace the real identity of each vehicle if necessary, the efficiency is improved as batch authentication is adopted, and the authentication process is simple and efficient. The message signature process and the group message signature process are same, the operating cost is low, and a replay attack can be borne as a time stamp is added.

Description

technical field [0001] The invention relates to the Internet of Vehicles technology, in particular to an identity-based efficient anonymous batch authentication method under the Internet of Vehicles environment. Background technique [0002] With the continuous development of mobile Internet communication technology and intelligent computing, mobile ad hoc networks have gradually penetrated into all walks of life. The Internet of Vehicles is a typical example. As the basis of intelligent transportation, it has become a research hotspot in academia and industry. Vehicle-to-vehicle communication (V2V) and vehicle-to-infrastructure communication (V2I) are realized by adopting the advanced 802.11p standard communication protocol, installing wireless communication equipment (OBU) on vehicles and deploying roadside communication infrastructure on a large scale. Thereby greatly improving the driving experience and enhancing driving safety. The vehicular network is required to pro...

AI Technical Summary

Problems solved by technology

Third, we cannot ensure that all users will not use their anonymous identities to publish false news, thereby escaping their own legal responsibilities

Fourth, in the process of solving security and privacy protection problems, computational overheads such as signature and verification are introduced, which increases the burden on the network

[0004] In order to solve the above series of problems, Chim et al. proposed the SPECS scheme, which proposes a solution based on software implementation without relying on tamper-resistant devices, but the SPECS scheme allows any vehicle and group members to authenticate and communicate with each other. There are some problems in communication: malicious vehicles in the Internet of Vehicles can pretend to be other vehicles to send false messages, or pretend to be other members in the group to safely send group messages, and can escape the traceability of the trusted center

Assuming that it follows the implementation method in the SPECS scheme, there is still a difference in the generation of signature keys in the message signature phase and the group message signature phase, and because of the one-time pad, each time a vehicle sends an intra-group message and a non-group message, it must Conduct a judgment process, which will introduce additional costs and reduce communication efficiency

[0007] 2. In this scheme, compared with the SPECS scheme, the efficiency of batch authentication and individual authentication has not been improved. Instead, a point product operation on the elliptic curve is introduced in the vehicle signature generation stage, which increases the computational overhead of the vehicle. At the same time, the efficiency of signature generation is reduced

[0008] 3. In this scheme, the batch authentication process uses two pairs of operations, the calculation overhead is too large, and the authentication process is inefficient

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