The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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A Secure Frequency Computation Method over Multisets

안전한 다중집합 빈도 계산 기법

  • Received : 2014.04.07
  • Accepted : 2014.05.28
  • Published : 2014.06.30
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Abstract

It is well known that data mining plays a crucial role in varities of real-world applications, by which extracts knowledge from large volume of datasets. Among functionalties provided by data mining, frequency mining over given multisets is a basic and essential one. However, most of users would like to obtain the frequency over their multisets without revealing their own multisets. In this work, we come up with a novel way to achive this goal and prove its security rigorously. Our scheme has several advantages over existing work as follows: Firstly, our scheme has the most efficient computational complexity in the cardinality of multisets. Further our security proof is rigorously in the simulation paradigm. Lastly our system assumption is general.

잘 알려진 바와 같이 데이터마이닝 (Data Mining)은 대용량의 데이터를 분석하여 필요한 정보를 추출하는데 있어서 매우 중요한 역할을 수행한다. 그중에서 집합에 포함된 원소들의 빈도수 (Frequency)를 알아내는 것은 데이터마이닝에서 기본적으로 지원되어야 하는 필수기능이다. 동시에 사용자가 소유한 다중집합 (혹은 집합) 자체의 공개를 원하지 않는 경우에 대비하여 다중집합의 원소는 공개하지 않고 빈도수만 계산하는 방법이 필요하다. 본 논문에서는 암호학적 도구를 기반으로 사용하여 이러한 조건을 만족하는 기법을 개발하고, 이것의 안전성을 엄밀하게 증명한다. 본 논문에서 제안된 기법은 기존 기법들과 달리 첫째, 시스템 가정이 일반적이고 둘째, 통신/연산 복잡도가 효율적이고 마지막으로 엄밀한 안전성 증명을 제시한다.

Keywords

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