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Secure Batch Deduplication without Dual Servers in Backup System

作     者:Zheng, Haoyu Zeng, Shengke Li, Hongwei Li, Zhijun 

作者机构:Xihua College Xihua University Chengdu China school of Computer and Software Engineering Xihua University Chengdu China School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu China MIG Group Cisco Systems Canada Co. Ottawa ON Canada 

出 版 物:《IEEE Transactions on Dependable and Secure Computing》 (IEEE Trans. Dependable Secure Comput.)

年 卷 期:2024年

页      面:1-13页

核心收录:

学科分类:0808[工学-电气工程] 08[工学] 0714[理学-统计学(可授理学、经济学学位)] 0701[理学-数学] 0812[工学-计算机科学与技术(可授工学、理学学位)] 

主  题:Semantics 

摘      要:Cloud storage provides highly available and low cost resources to users. However, as massive amounts of outsourced data grow rapidly, an effective data deduplication scheme is necessary. This is a hot and challenging field, in which there are quite a few researches. However, most of previous works require dual-server fashion to be against brute-force attacks and do not support batch checking. It is not practicable for the massive data stored in the cloud. In this paper, we present a secure batch deduplication scheme for backup system. Besides, our scheme resists the brute-force attacks without the aid of other servers. The core idea of the batch deduplication is to separate users into different groups by using short hashes. Within each group, we leverage group key agreement and symmetric encryption to achieve secure batch checking and semantically secure storage. We also extensively evaluate its performance and overhead based on different datasets. We show that our scheme saves the data storage by up to 89.84%. These results show that our scheme is efficient and scalable for cloud backup system and can also ensure data confidentiality. IEEE

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