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Integrated Authentication Server Design for Efficient Kerberos-Blockchain VANET Authentication.

Maya Rahayu1,2, Md Biplob Hossain1,3, Samsul Huda4

  • 1Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.

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Summary

This study introduces a Combined Server (CBS) for vehicular ad hoc networks (VANETs), merging authentication and ticket granting functions. The CBS enhances security and efficiency while reducing costs for intelligent transportation systems.

Keywords:
Kerberos authenticationVANET securityVehicular Ad Hoc Networkblockchainintegrated authentication server

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Area of Science:

  • Computer Science
  • Cybersecurity
  • Transportation Engineering

Background:

  • Vehicular Ad Hoc Networks (VANETs) are crucial for intelligent transportation systems (ITS), but their volatility poses security risks.
  • Verifying joining entities is essential for VANET communication security, with strict latency requirements (<100 ms).
  • Previous Kerberos-Blockchain (KBC) systems required additional servers, increasing infrastructure costs for growing urban vehicle volumes.

Purpose of the Study:

  • To present an integrated authentication server (Combined Server - CBS) for VANETs that merges Authentication Server (AS) and Ticket Granting Server (TGS) functionalities.
  • To maintain blockchain security while optimizing authentication performance and reducing infrastructure costs.
  • To evaluate the efficiency and cost-effectiveness of the proposed CBS architecture.

Main Methods:

  • Developed an integrated authentication server (CBS) combining AS and TGS functionalities.
  • Utilized OMNeT++ for network simulation and SUMO for traffic simulation.
  • Employed Ganache for blockchain implementation and performance evaluation.

Main Results:

  • The CBS eliminates the need for an extra server, reducing infrastructure costs.
  • Authentication delays are maintained below the critical 100 ms threshold.
  • Throughput is improved by 104%, and signaling overhead is reduced by 45% compared to the previous KBC system.

Conclusions:

  • The integrated CBS architecture significantly enhances the cost-effectiveness and efficiency of VANET systems.
  • Optimized authentication performance is achieved without compromising security.
  • The CBS provides a scalable and efficient solution for secure authentication in intelligent transportation systems.