Decentralized Anti-quantum Internet of Vehicles Data Sharing Scheme

YU Huifang; DANG Ningze

doi:10.11999/JEIT250144

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YU Huifang, DANG Ningze. Decentralized Anti-quantum Internet of Vehicles Data Sharing Scheme[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT250144

Citation:

YU Huifang, DANG Ningze. Decentralized Anti-quantum Internet of Vehicles Data Sharing Scheme[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT250144

YU Huifang, DANG Ningze. Decentralized Anti-quantum Internet of Vehicles Data Sharing Scheme[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT250144

Citation:

YU Huifang, DANG Ningze. Decentralized Anti-quantum Internet of Vehicles Data Sharing Scheme[J]. Journal of Electronics & Information Technology. doi: 10.11999/JEIT250144

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Decentralized Anti-quantum Internet of Vehicles Data Sharing Scheme

doi: 10.11999/JEIT250144 cstr: 32379.14.JEIT250144

YU Huifang^{1, 2
,
,},
DANG Ningze¹

1.
School of Cyberspace Security, Xi’an University of Posts & Telecommunications, Xi’an, China
2.
State Key Laboratory of Blockchain and Data Security, Zhejiang University, Hangzhou, China

Funds: The Natural Science Basis Research Projects of Shannxi Province (2025JC-YBMS-652; 2025JC-YBMS-676), The Open Project of The State Key Laboratory of Blockchain and Data Security, Zhejiang University (A2510)

Received Date: 2025-03-10
Rev Recd Date: 2025-08-20

Available Online: 2025-09-21

Abstract

Abstract

Objective Internet of Vehicles (IoV) faces emerging threats from quantum computing. NTRU lattice offers an effective approach to achieve anti-quantum security in data sharing. This study develops a decentralized anti-quantum IoV data sharing scheme. New scheme ensures the IND-CCA2 and UF-CMA security under the hardness of NTRU lattice computing problem; it uses short keys and small storage space to maintain low calculation complexity. Blockchain is employed to support the vehicle authentication, access control, key distribution and automated execution of smart contracts. New scheme provides a reliable anti-quantum solution for IoV data sharing and technical support for future development of intelligent transportation. Methods Based on unique identifiers and attribute set, the smart contract uses the Gaussian sampling algorithm to generate partial private keys and attribute private keys for users. Public–private key pairs are obtained during the key generation phase. IoV model integrates the blockchain, smart contracts, IPFS, RSUs, and OBUs. Smart contracts store and verify the data-sharing records, while IPFS stores encrypted IoV data to enhance the reliability and reduce the storage cost. RSUs collect the data uploaded by OBUs and forward it to the blockchain which broadcasts real-time traffic information to vehicles. Smart contracts dynamically evaluate the user permissions according to predefined access policies and trigger corresponding operations. Concurrent access experiments were conducted in large-scale and dynamic IoV scenario. Simulations under varying concurrent OBU access requests demonstrated that distributed blockchain architecture and smart contract permission verification enables the system to maintain stable performance under high concurrency. Results and Discussions The proposed scheme computes the data sharing signcryption strategy in accordance with current IoV security requirements. Table 2 compares its security characteristics and communication overhead. Table 3 reports four instances of private key, ciphertext and signature sizes, showing that the proposed scheme requires less overhead. Table 4 demonstrates that, as the number of concurrent users increases from 100 to 1000, the proposed scheme achieves lower total latency and more linear Throughput-Per-Second (TPS) growth compared with scheme [9]. Figure 3 illustrates that although the time consumption of all schemes increases with higher parameter values, the proposed scheme consistently exhibits the lowest time cost. Conclusions In the proposed scheme, the user private keys are bound to attribute sets and the data access is controlled by predefined access policies. This design ensures that only users with specific attributes can perform unsigncryption, thereby enabling fine-grained access control. The trapdoor generation and Gaussian sampling algorithms within the NTRU lattice reduce key size while ensuring anti-quantum security for IoV data transmission and storage. The integration of IPFS, blockchain, and smart contracts enables efficient index management and permission control, which strengthens the reliability of IoV system. The scheme supports concurrent access by large numbers of IoV users and has the potential to mitigate traffic accidents.
- Internet of vehicles,
- NTRU lattice,
- Data sharing,
- Attribute-based signcryption,
- Smart contract

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References(17)

References

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