Journal of Convergence for Information Technology (융합정보논문지)

Convergence Society for SMB (중소기업융합학회)
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A DID-Based Transaction Model that Guarantees the Reliability of Used Car Data

중고자동차 데이터의 신뢰성을 보장하는 DID기반 거래 모델

  • Kim, Ho-Yoon (Dept. of Computers & Media Engineering, Tongmyong University) ;
  • Han, Kun-Hee (Division of Computer Engineering, Baekseok University) ;
  • Shin, Seung-Soo (Dept. of Information Security, Tongmyong University)
  • 김호윤 (동명대학교 컴퓨터미디어공학과) ;
  • 한군희 (백석대학교 컴퓨터공학부) ;
  • 신승수 (동명대학교 정보보호학과)
  • Received : 2022.02.17
  • Accepted : 2022.04.20
  • Published : 2022.04.28
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Abstract

Online transactions are more familiar in various fields due to the development of the ICT and the increase in trading platforms. In particular, the amount of transactions is increasing due to the increase in used transaction platforms and users, and reliability is very important due to the nature of used transactions. Among them, the used car market is very active because automobiles are operated over a long period of time. However, used car transactions are a representative market to which information asymmetry is applied. In this paper presents a DID-based transaction model that guarantees reliability to solve problems with false advertisements and false sales in used car transactions. In the used car transaction model, sellers only register data issued by the issuing agency to prevent false sales at the time of initial sales registration. It is authenticated with DID Auth in the issuance process, it is safe from attacks such as sniping and middleman attacks. In the presented transaction model, integrity is verified with VP's Proof item to increase reliability and solve information asymmetry. Also, through direct transactions between buyers and sellers, there is no third-party intervention, which has the effect of reducing fees.

ICT의 발달과 거래 플랫폼의 증가로 다양한 분야에서는 온라인 거래가 더욱 친숙하다. 특히 중고거래 플랫폼과 이용자의 증가로 거래액이 증가하고 있으며 중고거래는 특성상 신뢰성이 매우 중요하다. 그중 자동차는 장기간에 걸쳐 운용하기 때문에 중고자동차 시장은 거래가 매우 활발하다. 그러나 중고자동차 거래는 정보의 비대칭성이 적용되는 대표적인 시장이다. 본 논문에서는 중고자동차 거래에서 허위광고, 허위매물에 대한 문제점을 해결하기 위해 신뢰성이 보장되는 DID 기반의 거래 모델을 제시한다. 중고자동차 거래 모델에서 판매자는 최초 매물 등록 시 허위매물을 방지하기 위해 발행기관으로부터 발급받은 데이터만 등록한다. 발급과정에서는 DID Auth로 인증하기 때문에 스니핑, 중간자 공격 등의 공격으로부터 안전하다. 제시한 거래 모델에서는 VP의 Proof 항목으로 무결성을 검증하여 신뢰성을 높이고 정보의 비대칭성을 해결한다. 또한 구매자와 판매자 간의 직접 거래로 제3 자의 개입이 없어 수수료를 절감하는 효과가 있다.

Keywords

Acknowledgement

This research was supported by the BB21plus funded by Busan Metropolitan City and Busan Institute for Talent & Lifelong Education(BIT).

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