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A Scalable and Secure Group Key Management Method for Secure V2V Communication.

Hayotjon Aliev1, HyungWon Kim1, Sunghyun Choi2

  • 1Department of Electronics Engineering, Chungbuk National University, Cheongju 28644, Korea.

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|October 31, 2020
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Summary

This study introduces a secure, lightweight, and scalable group key management and encryption method for vehicle-to-vehicle (V2V) communications. The proposed solution enhances road safety by ensuring confidentiality in V2V broadcasts, reducing computation time by over 80%.

Keywords:
group message encryption algorithmmatrix-based group key generationscalable group key managementsecure group communicationvehicle-to-vehicle communication

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Area of Science:

  • Cybersecurity
  • Network Security
  • Transportation Engineering

Background:

  • Vehicle-to-everything (V2X) communications are crucial for road safety applications.
  • Ensuring security and privacy in V2X networks is vital for commercial adoption.
  • Providing confidentiality for broadcast communications in V2X, especially vehicle-to-vehicle (V2V), presents significant challenges.

Purpose of the Study:

  • To propose a secure, lightweight, and scalable group key management and message encryption method for V2V broadcasting.
  • To address the challenge of providing confidentiality in V2V safety and service applications.
  • To enhance the security and privacy of vehicular networks for widespread V2X adoption.

Main Methods:

  • Developed a group key management method with scalable rekeying algorithms for dynamic group scenarios (nodes joining/leaving).
  • Employed a distributed and scalable architecture to reduce key management overhead and maintain small key sizes in large networks.
  • Integrated a lightweight matrix-based encryption algorithm compatible with the group key management method.

Main Results:

  • The proposed method efficiently handles dynamic group member changes.
  • Achieved a reduction in key management overhead and enhanced security levels.
  • Simulation results demonstrated over 80% reduction in computation time for group key generation and message encryption compared to existing methods.

Conclusions:

  • The proposed method offers a secure, lightweight, and scalable solution for confidentiality in V2V broadcasting.
  • The distributed architecture and efficient algorithms are suitable for large-scale, dynamic vehicular networks.
  • The findings support the widespread adoption of V2X communications by addressing critical security and privacy concerns.