Abstract
In view of the security risks and centralized structure of traditional intelligent transportation system, we propose a novel scheme of secure data sharing and customized services based on the consortium blockchain (DSCSCB). The ciphertext-policy attribute-based proxy re-encryption algorithm has the function of keyword searching by dividing the key into an attribute key and a search key, which not only solves the problem that proxy re-encryption algorithm cannot retrieve data, but also realizes data sharing and data forwarding. Moreover, the algorithm effectively controls the access permission of data, and provides a secure communication environment for the vehicular ad-hoc network (VANET). Service sectors, such as insurance companies, the traffic police and maintenance suppliers, obtain the corresponding ciphertext and then apply the smart contract to provide customized services for the onboard unit after decryption. Security analysis and performance evaluation demonstrate that our scheme not only meets the requirements of data sharing in the security and confidentiality, but also has obvious advantages in the overhead of computing and communication.
Highlights
With the improvement of living standards, vehicles have become an indispensable tool of transportation in our daily life
Zhang et al [33] proposed a secure data sharing system for the Internet of vehicles based on the blockchain, which employs the fragmentation technology to improve the scalability of the network and generate auxiliary blockchain to manage the data of different entities
This paper proposed a novel scheme of secure data sharing and customized services for intelligent transportation based on the consortium blockchain, which conquers the disadvantage of the centralized data management in traditional intelligent transportation, and ensures the confidentiality and security in the data interaction process, and effectively resists collusion attacks
Summary
With the improvement of living standards, vehicles have become an indispensable tool of transportation in our daily life. Zhang: Secure Data Sharing and Customized Services for Intelligent Transportation Based on a Consortium Blockchain by onboard units in an open wireless communication environment. In order to ensure the security of access data, the blockchain-based distributed architecture [24] applied a variable public key to protect the privacy of the onboard unit and prevent location tracking. Different from the existing schemes, we propose a secure data sharing and customized services based on the consortium blockchain (DSCSCB). Zhang et al [33] proposed a secure data sharing system for the Internet of vehicles based on the blockchain, which employs the fragmentation technology to improve the scalability of the network and generate auxiliary blockchain to manage the data of different entities.
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