최근 클라우드 스토리지 사용이 급증함에 따라 스토리지의 효율적인 사용을 위한 데이터 중복제거 기술이 활용되고있다. 그러나 외부 스토리지에 민감한 데이터를 저장할 경우 평문상태의 데이터는 기밀성 문제가 발생하기 때문에 중복처리를 통한 스토리지 효율성 제공뿐만 아니라 데이터 암호화를 통한 기밀성 보장이 필요하다. 최근, 스토리지의 절약뿐만 아니라 네트워크 대역폭의 효율적인 사용을 위해 클라이언트측 중복제거 기술이 주목을 받으면서 다양한 클라이언트측 중복제거 기술들이 제안되었지만 아직까지 안전성에 대한 문제가 남아있다. 본 논문에서는 암호화를 통해 데이터의 기밀성을 보장하고 소유권 증명을 이용해 데이터 접근제어를 제공하여 신뢰할 수 없는 서버와 악의적인 사용자로부터 프라이버시를 보존할 수 있는 안전한 클라이언트측 소스기반 중복제거 기술을 제안한다.
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