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DOI QR Code

VANET 환경에서의 협력적 메시지 전달을 위한 블록체인 기반 평판 시스템

A Reputation System based on Blockchain for Collaborative Message Delivery over VANETs

  • Lee, Kyeong Mo (Interdisciplinary Program of Information Security, Graduate School, Pukyong National University) ;
  • Rhee, Kyung-Hyune (Department of IT Convergence and Application Engineering, Pukyong National University)
  • 투고 : 2018.10.01
  • 심사 : 2018.12.12
  • 발행 : 2018.12.31

초록

Vehicular Ad-Hoc Networks (VANETs) have become one of the active areas of research, standardization, and development because they have tremendous potentials to improve vehicle and road safety, traffic efficiency, and convenience as well as comfort to both drivers and passengers. However, message trustfulness is a challenge because the propagation of false message by malicious vehicles induces unreliable and ineffectiveness of VANETs, Therefore, we need a reliable reputation method to ensure message trustfulness. In this paper, we consider a vulnerability against the Sybil attack of the previous reputation systems based on blockchain and suggest a new reputation system which resists against Sybil attack on the previous system. We propose an initial authentication process as a countermeasure against a Sybil attack and provide a reliable reputation with a cooperative message delivery to cope with message omission. In addition, we use Homomorphic Commitment to protect the privacy breaches in VANETs environment.

키워드

Table 1. Notation

MTMDCW_2018_v21n12_1448_t0001.png 이미지

Table 2. Setup(Smart Contract Construct)

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Table 3. Setup(OTP Authentication)

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Table 4. Propagating messages and generating proof of participation

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Table 5. Message verification and delivery

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Table 6. SmartContract(Proof Verification)

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Table 7. SmartContract(Accusing and Renew)

MTMDCW_2018_v21n12_1448_t0007.png 이미지

참고문헌

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