Journal of KIISE:Computer Systems and Theory (한국정보과학회논문지:시스템및이론)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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An Efficient Stream Authentication Scheme using Tree Authentication

인증 트리 기법을 이용한 효율적인 스트림 인증 기법

  • 박용수 (서울대학교 대학원 전기컴퓨터 공학부) ;
  • 조유근 (서울대학교 컴퓨터학과)
  • Published : 2002.08.01
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Abstract

We propose an efficient stream authentication scheme using tree authentication. To reduce the computation cost of the sender, we design the authentication tree whose height is very short. We appropriately distribute authentication information over packets so the receiver can verify data with high probability. Moreover, we provide mathematical analysis on the verification probability. For the proposed scheme and previous schemes, we measured the elapsed time for generating authentication information and the proposed scheme has equal to or slightly larger than that of GM's scheme, which has the lowest computation overhead. We performed simulations, which show that the verification probability of the proposed scheme is much higher than that of any other scheme.

본 논문에서는 인증 트리 기법을 이용하여 실시간으로 전달되는 스트림 데이타를 인증하는 효율적인 기법을 제시한다. 제시한 기법은 높이가 낮은 인증 트리를 설계하여 송신 서버의 계산량이 매우작으며, 인증 트리 내 인증 정보를 패킷에 적절히 분배하여 수신자가 데이타를 검증 시 검증 확률이 매우 높다. 본 논문에서는 제안된 기법의 검증 확률을 해석적으로 분석한 결과를 제시하였다. 기존 기법들과 비교해보면 송신 서버의 계산량은 기존 기법 중 가장 우수한 GM의 기법과 거의 비슷한 수준이며, 시뮬레이션을 통해 검증 확률을 측정한 결과 기존 기법들보다 월등히 높은 검증 확률을 보였다.

Keywords

References

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