Heterogeneous Broadcast Signcryption Scheme with Equality Test for IoVs

• Published in: IEEE transactions on vehicular technology pp. 1 - 16
• Main Authors: Hou, Yingzhe, Cao, Yue, Xiong, Hu, Kang, Jiawen, Foh, Chuan Heng, Dong, Changyu
• Format: Journal Article
• Language: English
• Published: IEEE 13.08.2024
• Subjects: Broadcast Signcryption; Electric Vehicles; Electronic mail; Equality test; Games; Heterogeneity; Internet of Vehicles; Polynomials; Protocols; Public key; Receivers; Servers
• ISSN: 0018-9545
• DOI: 10.1109/TVT.2024.3443103

To ensure the privacy and security of charging services under Internet of Vehicles (IoVs) environment, it is critical to secure the charging stations (CSs) interaction with multiple electric vehicles (EVs). In this paper, we construct a heterogeneous broadcast signcryption protocol supporting equality test for IoVs (HBSC-ET), which addresses the communication problem between a CS and EVs featured with One-to-Many properties. In our design, the CS is allocated in public key infrastructure cryptosystem (PKI), while the EVs are equipped in identity-based cryptography (IBC). In order to address the restriction of EVs storage resources, the received ciphertexts at EV side, are alternatively uploaded to cloud server running equality test. Here, the cloud server legitimately executes the equality test, to determine whether two ciphertexts conclude the same message without unsigncryption. With this, the design HBSC-ET is advanced in terms of information utilization ratio. Finally, the rigorous experiment as well as performance analysis elaborate that our proposed scheme is more suitable for charging services in IoVs.