摘要近年来,云计算正在高速发展。云存储可以实现任意地点,任意时间,任意数据访问及保障法规遵从的需求等,按需购买存储容量的云存储为用户节省投资的同时也节约了社会资源。但是,云存储还存在众多问题亟待解决,当用户将数据放在云存储中,他们最关心的就是数据是否完整无误;如果出现故障,是否可以恢复丢失的数据。解决这两大问题,用户才可放心地使用云存储。
数据完整性证明和数据持有性证明用于检测存储数据是否完整,而可恢复性证明则用于解决数据恢复问题。前者能快速识别数据是否损坏,注重效率;后者除识别数据完整性之外,还能够恢复已损数据。本文主要研究数据可恢复性证明的研究现状,并实现一个基于再生码的数据可恢复的存储系统。87662
毕业论文关键词 云计算 云安全存储 可恢复性证明 再生码 代理 数字签名
外文摘要
Title Cloud Storage Security —— System with Proofs of Data Retrievability
Abstract In recent years, cloud computing is developing rapidly。 The cloud storage can realize data access at any place, any time, any data and security compliance requirements。 To purchase the storage capacity according to the needs of cloud storage saves users’investment and the social resources。 However, there are still many burning issues about cloud storage need to be solved。 when the users upload data to the cloud storage, what they are concerned about is whether the data is complete and correct; if there is a fault, can the cloud storage recover original data。 Only if these two problems are solved, the users will acknowledge the cloud storage。
Provable Data Integrity(PDI) and Provable Data Pocession(PDP) is used to detect whether the storage data is complete, while Proof of Retrievability(POR)can be used to solve the issue of data recovery。 The former can quickly identify whether the data is corrupted, focusing on efficiency; the latter can verify data integrity and repair the damaged data besides identified。 In this paper, the research status of data recovery is studied, and a storage system based on regenerating codes is implemented。
Keywords Cloud computing, Cloud secure storage, Proofs of Retrievability, Regenerating codes, Proxy, Digital signature
目 次
1 引言 1
1。1 信息安全 1
1。2 云安全存储现状 1
1。3 相关工作 2
1。4 本文工作 4
1。5 论文结构内容 4
2 预备知识 5
2。1 云存储 5
2。2 云存储模型 5
2。3 再生码 6源-于,优+尔^论=文.网wwW.yOueRw.com 原文+QQ752.018766
2。3。1 研究现状 6
2。3。2 MD5码 6
2。3。3 再生码原理 7
2。4 线性子空间 7
2。4。1 再生码的线性子空间V 7
2。4。2 双线性对 8
3 数据审计与恢复系统 9
3。1 设计目标 9
3。2 系统模型