Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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Analysis on Zhou et al.'s ID-Based Authenticated Group Key Agreement To Exchange Secure Contents among Group Users

그룹 사용자간 안전한 콘텐츠 전송을 위한 Zhou의 ID-기반의 인증된 그룹 키 교환 프로토콜 분석

  • Choi, Jae-Tark (Graduate School of Information Security CIST, Korea University) ;
  • Kwon, Jeong-Ok (Graduate School of Information Security CIST, Korea University) ;
  • Yoon, Seok-Koo (Graduate School of Information Security CIST, Korea University)
  • 최재탁 (고려대학교 정보경영공학전문대학원) ;
  • 권정옥 (고려대학교 정보경영공학전문대학원) ;
  • 윤석구 (고려대학교 정보경영공학전문대학원)
  • Published : 2008.01.30
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Abstract

An authenticated group key agreement protocol allows a group of parties communicating over an insecure network to share a common secret key. In this paper, we show that Zhou et al.'s ID-based authenticated group key agreement schemes do not provide forward secrecy.

유료 콘텐츠를 정당한 서비스 수신자에게 안전하게 제공하기 위해서는 서비스 제공자와 수신자 사이에 안전한 키 교환이 필요하다. 그룹 키 교환 프로토콜은 이러한 그룹에 속한 멤버들이 공개된 통신망을 이용하여 안전하고 효율적인 방법으로 그룹의 세션키를 설정할 수 있게 한다. 최근에 L. Zhou는 효율적인 인증된 그룹 키 교환 프로토콜을 설계하였다. 본 논문에서 우리는 Zhou의 기법이 전방향 안전성을 제공하지 않음을 보인다.

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References

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