云存储中的重复数据删除与隐私权衡

IF 0.4 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS Applied Computing Review Pub Date : 2023-03-27 DOI:10.1145/3555776.3577711
Rodrigo de Magalhães Marques dos Santos Silva, Cláudio Correia, M. Correia, Luís Rodrigues
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引用次数: 0

摘要

用户通常会对存储在云存储服务上的文件进行加密,以确保数据隐私。不幸的是,如果没有额外的机制,加密文件会防止使用服务器端重复数据删除,因为两个相同的文件在加密后会不同。加密重复数据删除技术将文件加密和重复数据删除相结合。这种组合通常需要不同客户之间进行某种形式的直接或间接协调。在本文中,我们解决了调和数据加密需求和重复数据删除优势的问题。特别是,我们研究实现这一目标的技术,同时避免频率分析攻击,即根据文件存储和/或访问的频率推断加密文件内容的攻击。我们提出了一个为文件分配加密密钥的新协议,该协议利用可信执行环境的使用来对对手隐藏块的频率。
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Deduplication vs Privacy Tradeoffs in Cloud Storage
Users often encrypt files they store on cloud storage services to ensure data privacy. Unfortunately, without additional mechanisms, encrypting files prevents the use of server-side deduplication as two identical files will be different when encrypted. Encrypted deduplication techniques combines file encryption and data deduplication. This combination usually requires some form of direct or indirect coordination between the different clients. In this paper, we address the problem of reconciling the need to encrypt data with the advantages of deduplication. In particular, we study techniques that achieve this objective while avoiding frequency analysis attacks, i.e., attacks that infer the content of an encrypted file based on how frequently the file is stored and/or accessed. We propose a new protocol for assigning encryption keys to files that leverages the use of trusted execution environments to hide the frequencies of chunks from the adversary.
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来源期刊
Applied Computing Review
Applied Computing Review COMPUTER SCIENCE, INFORMATION SYSTEMS-
自引率
40.00%
发文量
8
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