本文選題：云存儲　切入點：完整性　出處：《廣州大學》2016年碩士論文

【摘要】：云存儲,是目前信息技術(shù)的一個重要發(fā)展.它通過外包存儲資源使得用戶能以較廉價和便捷的方式獲得存儲資源.本文主要研究云存儲的完整性驗證方案,即用戶從云端取回數(shù)據(jù)時如何驗證其完整性的問題.論文的主要研究成果如下：1.提出了一個云存儲模型.針對云環(huán)境下用戶數(shù)據(jù)的存儲和驗證問題,本文給出了一個云存儲模型.該模型可以實現(xiàn)用戶在取回云端數(shù)據(jù)時需要驗證其完整性的情況.2.提出了一個基于一般簽名的云存儲方案.針對如何運用簽名思想來構(gòu)造一個云存儲方案的問題,本文給出了一個基于簽名的云存儲方案的一般性構(gòu)造,并分析了方案的安全性.3.提出了一個基于可分在線/離線簽名的云存儲方案.針對存儲信息一旦被確定用戶就必須用極少的時間完成存儲的情況,本文給出了一個有效率的方案.該方案因為采用了可分在線/離線簽名的思想,使得該方案在在線計算階段的效率與其他方案相比具有顯著的優(yōu)勢,表現(xiàn)為在線計算量和在線傳輸信息量的減少.4.提出了一個基于實時數(shù)據(jù)流簽名的云存儲方案.針對網(wǎng)絡(luò)上數(shù)據(jù)流實時存儲的情況,本文給出了一個云存儲方案.該方案因為運用了哈希鏈技術(shù)使得在存儲及驗證時的效率得到了極大的提高,而且還具有防丟包的能力,特別適用于容易丟包的網(wǎng)絡(luò)實時數(shù)據(jù)存儲的情況.5.提出了相對完整性驗證的概念.針對如何對差分隱私保護下的統(tǒng)計數(shù)據(jù)庫進行數(shù)據(jù)完整性驗證的問題,本文提出了相對完整性驗證的概念,并構(gòu)造了一個針對差分隱私保護機制下的統(tǒng)計數(shù)據(jù)庫的云存儲完整性驗證方案.運用該方案,可以實現(xiàn)對差分隱私保護下的統(tǒng)計數(shù)據(jù)庫的完整性驗證.
[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.
【學位授予單位】：廣州大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TP333;TP309

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