Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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A Transaction Analysis Model for OpenADR 2.0b Payload

OpenADR 2.0b 페이로드 트랜잭션 분석 모델 연구

  • Received : 2017.02.07
  • Accepted : 2017.03.20
  • Published : 2017.03.28
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Abstract

OpenADR is a national standard communication protocol of demand response service. OpenADR uses XML message, called a payload, to support logical transaction of demand response service. For this purpose, OpenADR defines a XML element as transaction identifier which is called requestID. Unfortunately, OpenADR 2.0b profile specification describes some information about requestID but, it is not enough for understanding properly. Ambiguous definition of payload transaction makes vulnerabilities of implementing VEN & VTN and confuses mapping OpenADR 2.0b protocol into other smart grid protocols. Therefore, this paper redefines payload transaction to solve an ambiguous information of OpenADR 2.0b profile specification, proposes a model of analyzing payload transaction, and shows how to detect a payload transaction vulnerability in real-world.

유동적인 전기 소비량과 소비자와 공급자가 실시간으로 변하는 시장 상황에 대응하기 위해 수요 반응에 기술이 있다. OpenADR은 이러한 수요 반응 서비스를 제공하는 국제적인 표준 통신 프로토콜이다. OpenADR은 어플리케이션 계층에서 페이로드라는 XML 메시지를 사용하며, 본 프로토콜이 제공하는 수요 반응 서비스는 페이로드에 논리적인 요청, 응답을 사용해 제공한다. 이를 위해, OpenADR은 트랜잭션에 식별자로 'requestID'라는 XML 엘리먼트를 정의한다. OpenADR 2.0b 프로파일 사양 문서에서 트랜잭션 식별자에 설명은 있지만, 이해하기에 충분하지 않다. 모호한 트랜잭션에 설명은 OpenADR에 VEN과 VTN 구현에 취약점을 만들고, 서로 다른 프로토콜 간 변환에 혼란을 줄 가능성이 있다. 따라서 본 논문에서는 OpenADR 2.0b에 페이로드 트랜잭션 모호성을 해결하는 정의와 페이로드 트랜잭션을 분석하는 모델을 제시하고, 본 논문에서 제시한 분석 모델을 사용해 실제 트랜잭션 취약점을 탐지하는 사례를 보인다.

Keywords

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