Open AccessClient‐Side Deduplication to Enhance Security and Reduce Communication Costs
Author(s) -
Kim Keonwoo,
Youn TaekYoung,
Jho NamSu,
Chang KuYoung
Publication year - 2017
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.17.0116.0039
Subject(s) - computer science , data deduplication , client side , encryption , cryptography , computer network , server side , cryptographic primitive , computer security , cloud computing , bandwidth (computing) , protocol (science) , cryptographic protocol , operating system , medicine , alternative medicine , pathology
Message‐locked encryption (MLE) is a widespread cryptographic primitive that enables the deduplication of encrypted data stored within the cloud. Practical client‐side contributions of MLE, however, are vulnerable to a poison attack, and server‐side MLE schemes require large bandwidth consumption. In this paper, we propose a new client‐side secure deduplication method that prevents a poison attack, reduces the amount of traffic to be transmitted over a network, and requires fewer cryptographic operations to execute the protocol. The proposed primitive was analyzed in terms of security, communication costs, and computational requirements. We also compared our proposal with existing MLE schemes.