P2P分布式存储系统认证技术的研究与实现

发布时间：2018-03-16 01:18

本文选题：分布式存储　切入点：P2P存储系统　出处：《电子科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：在信息技术飞速发展的今天，，人们对信息传输与存储技术的需求也随之提高。集中式存储技术存在容量小、可扩展性差、成本高等问题，而基于P2P的分布式存储技术有着集中式存储技术所不具备的优势，能够满足人们日益增长的存储需求。但P2P存储系统存在安全隐患，如何在满足人们存储容量和速率的基础上，提高存储的安全性则显得至关重要。认证数据结构方式虽然能很好地解决集中式存储的数据的安全认证问题，但无法很好地解决分布式存储的数据的安全认证问题。分布式认证跳表(DASL)和分布式merkle树(DMT)可以解决分布式存储环境下的数据认证问题，但存在着一定的安全隐患和成本相对较高等问题。本研究在对P2P分布存储认证研究的现状梳理的基础上，分别从P2P网络和存储认证技术、分布式认证B+树、面向DHT的P2P数据认证模型研究、面向DHT的P2P分布式存储认证模块的实现等几个方面展开了研究。本研究的创新之处：首先、提出了分布式认证B+树(DistributedAuthenticated B+Tree,DABT)的具体方案，并介绍了相关的设计思想、算法，以及对DABT的相关方面进行了分析和评价。其次、将DABT的应用模型应用于P2P存储系统之中，并设计实现了面向DHT的P2P分布式存储认证原型，在保证文件完整性和可认证性方面进行了测试，并进一步修正了相关问题。
[Abstract]:With the rapid development of information technology, the demand for information transmission and storage technology has been increased. The centralized storage technology has some problems, such as small capacity, poor scalability, high cost and so on. The distributed storage technology based on P2P has the advantages that the centralized storage technology does not have, and can meet the increasing storage needs of people. However, P2P storage system has security problems, how to meet the storage capacity and speed of people on the basis of, It is very important to improve the security of storage. Although the authentication data structure can solve the security authentication problem of centrally stored data, But it can not solve the problem of security authentication of distributed stored data. Distributed authentication hopping table (DASL) and distributed merkle tree (DMTT) can solve the problem of data authentication in distributed storage environment. However, there are some potential security problems and relatively high cost. Based on the status of P2P distributed storage authentication research, this study is based on P2P network and storage authentication technology, distributed authentication B tree. The research on P2P data authentication model for DHT and the implementation of P2P distributed storage authentication module for DHT are carried out. The innovations of this study are as follows: firstly, the specific scheme of distributed authentication B tree is proposed. The related design ideas, algorithms and related aspects of DABT are analyzed and evaluated. Secondly, the application model of DABT is applied to P2P storage system, and the prototype of P2P distributed storage authentication for DHT is designed and implemented. Tests are carried out to ensure file integrity and authentication, and related issues are further corrected.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP333

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