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Ensuring secure and reliable information dissemination across multi-RSU in VANETs is essential for effective V2I communication. To address challenges like incomplete data transmission and dynamic network restructuring, we propose a fine-grained access control scheme leveraging ciphertext-policy attribute-based encryption (CP-ABE). Our scheme integrates proxy re-encryption to ensure seamless access to encrypted data for high-speed vehicles across RSUs, while maintaining privacy. To address computational limitations of on-board units, we introduce a CP-ABE delegation scheme that offloads complex computations to RSUs, optimizing efficiency through a decision tree-based approach. Experimental results demonstrate improved reliability, privacy preservation, and efficiency for multimedia data dissemination in cross-RSU scenarios，making it suitable for dynamic and high-demand VANETs environments

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Traffic Data Access Control in VANETs

  • 章节

  • 发表日期：

    2025年

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  • Yingjie Xia,
  • Xuejiao Liu,
  • Huihui Wu,
  • Qichang Li

摘要

Ensuring secure and reliable information dissemination across multi-RSU in VANETs is essential for effective V2I communication. To address challenges like incomplete data transmission and dynamic network restructuring, we propose a fine-grained access control scheme leveraging ciphertext-policy attribute-based encryption (CP-ABE). Our scheme integrates proxy re-encryption to ensure seamless access to encrypted data for high-speed vehicles across RSUs, while maintaining privacy. To address computational limitations of on-board units, we introduce a CP-ABE delegation scheme that offloads complex computations to RSUs, optimizing efficiency through a decision tree-based approach. Experimental results demonstrate improved reliability, privacy preservation, and efficiency for multimedia data dissemination in cross-RSU scenarios，making it suitable for dynamic and high-demand VANETs environments