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<p>Secure and efficient vehicle-to-vehicle (V2V) communication is fundamental to the success of intelligent transportation systems (ITS), particularly in cross-domain environments where data exchange must be both seamless and protected. However, existing authentication schemes often suffer from single points of failure, high computational overhead, and trust management challenges, rendering them impractical for resource-constrained vehicular networks. To address these issues, we propose a novel cross-domain mutual authentication framework leveraging certificateless cryptography (CMA–CLC) and identity-based cryptosystems (CMA–IBC), reinforced by blockchain technology for its tamper-proof and decentralized properties. Our protocol establishes a trusted communication channel between vehicles across multiple security domains, enabling heterogeneous signcryption to ensure data confidentiality, integrity, and resistance against forgery. A comprehensive security analysis using the random oracle model verifies the robustness of our scheme against various cyber threats, including impersonation and replay attacks. Furthermore, experimental evaluations demonstrate that our approach significantly reduces computational and communication overhead compared to existing solutions, making it highly suitable for dynamic and resource-constrained vehicular ad hoc networks (VANETs).</p>

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An efficient cross-domain mutual authentication scheme for heterogeneous signcryption in VANETs

  • 期刊论文

  • 发表日期：

    2025年9月19日

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  • Wael Khalafalla,
  • Wen-Xing Zhu,
  • Ahmed Elkhalil,
  • Chenyang Yan

摘要

Secure and efficient vehicle-to-vehicle (V2V) communication is fundamental to the success of intelligent transportation systems (ITS), particularly in cross-domain environments where data exchange must be both seamless and protected. However, existing authentication schemes often suffer from single points of failure, high computational overhead, and trust management challenges, rendering them impractical for resource-constrained vehicular networks. To address these issues, we propose a novel cross-domain mutual authentication framework leveraging certificateless cryptography (CMA–CLC) and identity-based cryptosystems (CMA–IBC), reinforced by blockchain technology for its tamper-proof and decentralized properties. Our protocol establishes a trusted communication channel between vehicles across multiple security domains, enabling heterogeneous signcryption to ensure data confidentiality, integrity, and resistance against forgery. A comprehensive security analysis using the random oracle model verifies the robustness of our scheme against various cyber threats, including impersonation and replay attacks. Furthermore, experimental evaluations demonstrate that our approach significantly reduces computational and communication overhead compared to existing solutions, making it highly suitable for dynamic and resource-constrained vehicular ad hoc networks (VANETs).