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<p>Ensuring secure and efficient communication in vehicular ad hoc networks (VANETs) is crucial due to their real-time nature and critical role in road safety. Traditional cryptographic methods often struggle to meet these demands, particularly in preventing data leaks through intermediaries. This study proposes an advanced authentication scheme for heterogeneous signcryption in VANETs (ASHS-CRF), incorporating a cryptographic reverse firewall (CRF) to mitigate risks such as data exfiltration and ciphertext tampering. ASHS-CRF integrates certificateless cryptography (CLC) with public-key infrastructure (PKI) to enhance scalability and interoperability across diverse VANET nodes. Additionally, an online/offline signcryption process reduces computational overhead, making the protocol suitable for resource-constrained environments. Formal security analysis demonstrates that ASHS-CRF is resilient to selective ciphertext attacks (IND-CCA2), message forgery (EUF-CMA), replay attacks, and insider threats. The proposed scheme offers a reliable and scalable solution for securing VANET communications while meeting real-time operational requirements.</p>

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Efficient authentication scheme for heterogeneous signcryption with cryptographic reverse firewalls for VANETs

  • 期刊论文

  • 发表日期：

    2025年3月28日

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  • Wael Khalafalla,
  • Wen-Xing Zhu,
  • Ahmed Elkhalil,
  • Salah-ud-din Khokhar

摘要

Ensuring secure and efficient communication in vehicular ad hoc networks (VANETs) is crucial due to their real-time nature and critical role in road safety. Traditional cryptographic methods often struggle to meet these demands, particularly in preventing data leaks through intermediaries. This study proposes an advanced authentication scheme for heterogeneous signcryption in VANETs (ASHS-CRF), incorporating a cryptographic reverse firewall (CRF) to mitigate risks such as data exfiltration and ciphertext tampering. ASHS-CRF integrates certificateless cryptography (CLC) with public-key infrastructure (PKI) to enhance scalability and interoperability across diverse VANET nodes. Additionally, an online/offline signcryption process reduces computational overhead, making the protocol suitable for resource-constrained environments. Formal security analysis demonstrates that ASHS-CRF is resilient to selective ciphertext attacks (IND-CCA2), message forgery (EUF-CMA), replay attacks, and insider threats. The proposed scheme offers a reliable and scalable solution for securing VANET communications while meeting real-time operational requirements.