The authentication protocol is commonly served as the first defense line against various attacks in vehicular ad hoc networks (VANETs). Conventional schemes usually employ public key infrastructure or cryptography-based algorithms, which suffer from high computational and storage cost. In this paper, we propose a privacy-preserving authentication scheme for VANETs based on consortium blockchain. The authenticity of a vehicle or a road-side unit is represented by its transaction capability on blockchain instead of a certificate or a cryptographic key. In support of that, we design a novel data structure based on the unspent transaction output (UTXO) combined with a set of online operations, including issue, transfer, query and revocation. Thus, the authentication between two entities is accomplished by on-chain verification and corresponding communications. We conduct a set of security and privacy analysis as well as implementing a prototype on the Hyperledger Fabric platform, to evaluate the effectiveness and the efficiency of the proposed scheme.


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    Title :

    A Privacy-Preserving Authentication Scheme for VANETs based on Consortium Blockchain


    Contributors:
    Zhang, Yujian (author) / Tong, Fei (author) / Xu, Yuwei (author) / Tao, Jun (author) / Cheng, Guang (author)


    Publication date :

    2020-11-01


    Size :

    745431 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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