云存储加密数据去重删除所有权证明方法
发布时间:2018-01-06 07:03
本文关键词:云存储加密数据去重删除所有权证明方法 出处:《计算机研究与发展》2015年01期 论文类型:期刊论文
更多相关文章: 云存储 去重复化 可证明所有权 抽样检测 可证明安全
【摘要】:随着云计算服务的广泛应用,为了节省磁盘空间和带宽,出现了一种新技术:客户端去重复化.但近期发现了一种针对该技术的新型攻击:攻击者只需获得原始文件的一个摘要信息,即文件的散列值,即可从服务器端获得全部原始文件.为了解决上述安全问题,提出了一个密码学安全的、高效的证明方案来支持多客户端加密文件的去重复删除场景.通过抽样检测、动态系数和随机选择的原始文件检索值使方案达到安全与高效的目标;同时,还提出了一种巧妙的分布式捎带技术,将文件加密密钥的分发过程与所有权证明过程同步实施.最后,对所提方案进行了严格的安全性证明和深入的性能分析与仿真,结果表明,所提的方案不仅能达到可证明的安全级别,而且执行效率较高,尤其在减少客户端计算负载方面.
[Abstract]:With the wide application of cloud computing services, in order to save disk space and bandwidth. A new technology has emerged: client deduplication, but recently a new attack against this technique has been discovered: an attacker only needs to obtain a summary information of the original file, that is, the hash value of the file. We can get all the original files from the server. In order to solve the security problem mentioned above, we propose a cryptographic secure. The efficient proof scheme supports the multi-client encryption file to delete the scene repeatedly. Through sampling detection, dynamic coefficient and random selection of the original file retrieval value, the scheme can achieve the goal of security and efficiency. At the same time, an ingenious distributed piggyback technology is proposed to synchronize the distribution of file encryption keys with the process of proof of ownership. Finally. Strict security proof and in-depth performance analysis and simulation are carried out on the proposed scheme. The results show that the proposed scheme can not only achieve a provable security level, but also have a high execution efficiency. Especially in reducing client computing load.
【作者单位】: 西安电子科技大学计算机学院;
【基金】:国家自然科学基金青年基金项目(61303219,61100230);国家自然科学基金重点项目(60633020) 中央高校基本科研业务费专项资金项目(K5051303007) 陕西省自然科学基金项目(2014JQ8295)
【分类号】:TP333;TP309
【正文快照】: 随着云计算服务的广泛应用越来越多的数据被存储在远端服务上,所以需要有新的技术来节省这种存储模式下的磁盘空间和网络带宽.在这样的需求背景下,出现了一个关键的技术概念:去重复化[1].该技术的核心思想是服务器只存储文件的一份拷贝,而无论有多少个客户端想存储同一个文件,,
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