정보보호학회논문지 (Journal of the Korea Institute of Information Security & Cryptology)

  • 제18권4호
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  • Pages.69-78
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  • 2008
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  • 1598-3986(pISSN)
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  • 2288-2715(eISSN)
한국정보보호학회 (Korea Institute of Information Security and Cryptology)
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CHSH 부등식을 이용하여 양자 키 분배와 양자 인증의 안전성을 개선한 프로토콜

Improving The Security Of Quantum Key Distribution And Quantum Authentication By Using CHSH Inequality

  • 허진오 (고려대학교 정보경영공학전문대학원) ;
  • 홍창호 (고려대학교 정보경영공학전문대학원) ;
  • 임종인 (고려대학교 정보경영공학전문대학원) ;
  • 양형진 (고려대학교 정보경영공학전문대학원, 고려대학교 디스플레이 반도체 물리학과)
  • Heo, Jin-O (Graduate School of Information Management and Security, Korea University) ;
  • Hong, Chang-Ho (Graduate School of Information Management and Security, Korea University) ;
  • Lim, Jong-In (Graduate School of Information Management and Security, Korea University) ;
  • Yang, Hyoung-Jin (Graduate School of Information Management and Security, Korea University, Department of Display Semiconductor, Korea University)
  • 발행 : 2008.08.30
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초록

본 논문에서는 Bao-sen Shi(2001년)에 의해 제안된 얽힘 상태(벨 상태)를 이용한 양자 키 분배와 양자 인증 프로토콜의 취약성을 분석하고 그것을 보완한 프로토콜을 제안한다. 기존의 프로토콜은 사용자들이 제 3자(중재자)를 인증하는 과정만 존재했기 때문에 도청자의 Impersonation 공격에 대해 취약성을 가지고 있었다. 본 논문이 제안하는 프로토콜은 CHSH 부등식을 이용한 체크 모드를 사용하여 중재자가 사용자들을 인증함으로써 안전성을 보완한 프로토콜이다.

We propose to analyze a weakness of quantum key distribution and quantum authentication which use entangled state were proposed by Bao-sen Shi(2001) and to improve the security of the protocol. The existing protocol had a weakness against an impersonation attack of an eavesdropper, because of a only process which authenticated a third party(Center) by users. In this paper, we propose improving the security of the protocol that authenticates users by a third party using check mode which applies CHSH inequality.

키워드

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