發(fā)布時(shí)間：2018-07-05 05:47

  本文選題：云存儲(chǔ) + 重復(fù)數(shù)據(jù)刪除�。� 參考：《云南大學(xué)》2013年碩士論文

【摘要】：隨著云存儲(chǔ)的迅速發(fā)展,云存儲(chǔ)變得越來(lái)越流行了,因?yàn)樗梢蕴峁┑统杀镜�、大存�?chǔ)的使用需求和資源處理。盡管數(shù)據(jù)量成倍增加,但研究發(fā)現(xiàn),在現(xiàn)有的存儲(chǔ)系統(tǒng)中存在大量的冗余數(shù)據(jù)。那么在云存儲(chǔ)中,如何在保證數(shù)據(jù)的安全性和完整性的基礎(chǔ)上,降低大量數(shù)據(jù)的傳輸、存儲(chǔ)以及管理的開(kāi)銷現(xiàn)已成為云存儲(chǔ)的一個(gè)重要問(wèn)題。特別的,如何在保證數(shù)據(jù)機(jī)密性的前提下,盡量提高重復(fù)數(shù)據(jù)刪除效率是一個(gè)非常重要的問(wèn)題。本文建立一個(gè)安全的重復(fù)數(shù)據(jù)刪除機(jī)制,在能確保存儲(chǔ)數(shù)據(jù)機(jī)密性條件下,盡可能提高重復(fù)數(shù)據(jù)刪除效率。 針對(duì)上面的冗余數(shù)據(jù)大量存在、可擴(kuò)展性差、效率低并受限于網(wǎng)絡(luò)帶寬等瓶頸問(wèn)題,本文首先介紹了密碼學(xué)相關(guān)理論以及關(guān)于安全重復(fù)數(shù)據(jù)刪除機(jī)制的關(guān)鍵技術(shù)。通過(guò)對(duì)這些理論和技術(shù)的研究和討論,在此基礎(chǔ)上我們提出了具有代理的安全重復(fù)數(shù)據(jù)刪除機(jī)制,并加入版本控制技術(shù)。 本文提出的安全重復(fù)數(shù)據(jù)刪除機(jī)制的主要設(shè)計(jì)思想是：將重復(fù)數(shù)據(jù)刪除處理放在客戶端,在客戶端使用hash值作為數(shù)據(jù)塊標(biāo)識(shí)符來(lái)進(jìn)行重復(fù)數(shù)據(jù)刪除以及數(shù)據(jù)塊加密等操作,在代理端提供了具有元數(shù)據(jù)管理、密鑰管理等技術(shù)來(lái)實(shí)現(xiàn)合法用戶對(duì)所存儲(chǔ)數(shù)據(jù)塊的正常訪問(wèn)和授權(quán),從而實(shí)現(xiàn)具有代理的安全重復(fù)數(shù)據(jù)刪除機(jī)制；同時(shí)介紹了安全云存儲(chǔ)中的版本控制技術(shù),并在具有代理的安全重復(fù)數(shù)據(jù)刪除機(jī)制中加入版本控制功能。最終保證當(dāng)重復(fù)數(shù)據(jù)被刪除時(shí),在能確保數(shù)據(jù)安全性的基礎(chǔ)上,盡力提高重復(fù)數(shù)據(jù)刪除效率,從而保證數(shù)據(jù)存儲(chǔ)空間利用率。
[Abstract]:With the rapid development of cloud storage, cloud storage has become more and more popular because it can provide low cost, large storage usage requirements and resource processing. Although the amount of data is increasing exponentially, it is found that there is a large amount of redundant data in the existing storage system. In cloud storage, how to reduce the transmission of a large amount of data on the basis of ensuring the security and integrity of data has become an important problem in cloud storage. In particular, how to improve the efficiency of duplicate data deletion under the premise of data confidentiality is a very important issue. In this paper, we establish a secure mechanism for deleting repeated data, which can improve the efficiency of data deletion as much as possible under the condition of ensuring the confidentiality of stored data. Aiming at the bottleneck problems of redundant data such as large amount of redundant data, poor scalability, low efficiency and limited network bandwidth, this paper first introduces the cryptographic theory and the key technology about the mechanism of deleting secure repeated data. Based on the research and discussion of these theories and techniques, we propose a secure data deletion mechanism with agent, and add version control technology. The main design idea of the security repeated data deletion mechanism proposed in this paper is that the repeated data delete processing is put into the client side, the hash value is used as the data block identifier to delete the repeated data in the client side and the data block encryption operation, etc. In the agent, the technologies of metadata management and key management are provided to realize the normal access and authorization of the legal user to the stored data block, so as to realize the security repeated data deletion mechanism with the agent. At the same time, the version control technology in secure cloud storage is introduced, and the version control function is added to the security duplicate data deletion mechanism with agent. Finally, it is guaranteed that when the repeated data is deleted, the efficiency of data deletion can be improved on the basis of ensuring the security of the data, so as to ensure the utilization of the data storage space.
【學(xué)位授予單位】：云南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP333
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本文編號(hào)：2099170