암호데이터 중복제거 기술 동향

Deduplication Technologies over Encrypted Data

저자
김건우지능보안연구그룹
장구영지능보안연구그룹
김익균지능보안연구그룹
권호
33권 1호 (통권 169)
논문구분
4차 산업혁명 사회의 초연결 지능과 신뢰 인터넷 기술 특집
페이지
68-77
발행일자
2018.02.01
DOI
10.22648/ETRI.2018.J.330107
초록
Data deduplication is a common used technology in backup systems and cloud storage to reduce storage costs and network traffic. To preserve data privacy from servers or malicious attackers, there has been a growing demand in recent years for individuals and companies to encrypt data and store encrypted data on a server. In this study, we introduce two cryptographic primitives, Convergent Encryption and Message-Locked Encryption, which enable deduplication of encrypted data between clients and a storage server. We analyze the security of these schemes in terms of dictionary and poison attacks. In addition, we introduce deduplication systems that can be implemented in real cloud storage, which is a practical application environment, and describes the proof of ownership on client-side deduplication.
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