云存储完整性验证方案的研究

发布时间：2018-04-04 16:45

本文选题：云存储　切入点：完整性　出处：《广州大学》2016年硕士论文

【摘要】：云存储,是目前信息技术的一个重要发展.它通过外包存储资源使得用户能以较廉价和便捷的方式获得存储资源.本文主要研究云存储的完整性验证方案,即用户从云端取回数据时如何验证其完整性的问题.论文的主要研究成果如下：1.提出了一个云存储模型.针对云环境下用户数据的存储和验证问题,本文给出了一个云存储模型.该模型可以实现用户在取回云端数据时需要验证其完整性的情况.2.提出了一个基于一般签名的云存储方案.针对如何运用签名思想来构造一个云存储方案的问题,本文给出了一个基于签名的云存储方案的一般性构造,并分析了方案的安全性.3.提出了一个基于可分在线/离线签名的云存储方案.针对存储信息一旦被确定用户就必须用极少的时间完成存储的情况,本文给出了一个有效率的方案.该方案因为采用了可分在线/离线签名的思想,使得该方案在在线计算阶段的效率与其他方案相比具有显著的优势,表现为在线计算量和在线传输信息量的减少.4.提出了一个基于实时数据流签名的云存储方案.针对网络上数据流实时存储的情况,本文给出了一个云存储方案.该方案因为运用了哈希链技术使得在存储及验证时的效率得到了极大的提高,而且还具有防丢包的能力,特别适用于容易丢包的网络实时数据存储的情况.5.提出了相对完整性验证的概念.针对如何对差分隐私保护下的统计数据库进行数据完整性验证的问题,本文提出了相对完整性验证的概念,并构造了一个针对差分隐私保护机制下的统计数据库的云存储完整性验证方案.运用该方案,可以实现对差分隐私保护下的统计数据库的完整性验证.
[Abstract]:Cloud storage is an important development of information technology at present.It enables users to obtain storage resources in a cheaper and more convenient way by outsourcing storage resources.This paper mainly studies the integrity verification scheme of cloud storage, that is, how to verify the integrity of cloud storage when the user retrieves data from the cloud.The main research results of this paper are as follows: 1.A cloud storage model is proposed.This paper presents a cloud storage model for the storage and verification of user data in cloud environment.This model can realize that the user needs to verify its integrity when retrieving cloud data.A cloud storage scheme based on general signature is proposed.In order to solve the problem of how to construct a cloud storage scheme with the idea of signature, this paper gives a general structure of a cloud storage scheme based on signature, and analyzes the security of the scheme.A cloud storage scheme based on separable online / offline signature is proposed.In this paper, an efficient scheme is proposed to solve the problem that once the storage information is determined, the user must complete the storage in very little time.Due to the idea of divisible online / offline signature, the efficiency of the scheme in the online computing phase is significantly superior to that of other schemes, which is shown by the decrease of the amount of online computation and the amount of information transmitted online.A cloud storage scheme based on real-time data stream signature is proposed.This paper presents a cloud storage scheme for real-time storage of data streams on the network.Because of the application of hash chain technology, the efficiency of storage and verification is greatly improved, and the scheme also has the ability of preventing packet loss, which is especially suitable for real-time data storage in networks where packet loss is easy to be lost.The concept of relative integrity verification is proposed.In order to solve the problem of how to verify the data integrity of statistical database under differential privacy protection, the concept of relative integrity verification is proposed in this paper.And a cloud storage integrity verification scheme for statistical database under differential privacy protection is constructed.Using this scheme, the integrity of the statistical database under differential privacy protection can be verified.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP333;TP309

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