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Design and implementation of file-sharing system based on the credibility of the evaluation system

Author: ZhouZuo
Tutor: TanHao
School: University of Electronic Science and Technology
Course: Applied Computer Technology
Keywords: P2P networks Security Reputation Distributed Structured
CLC: TP393.02
Type: Master's thesis
Year: 2008
Downloads: 70
Quote: 1
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Abstract


Peer-to-Peer Network (P2P) technology is currently one of the hot research field, a great impact on its traditional network of \P2P network using a distributed architecture, each node is both a client and server, this structure makes P2P technology in file sharing, distributed computing, collaboration systems, e-commerce, the depth of the search engine has broad application. P2P networks there are still many problems, including security issues is particularly important because it directly determines the usability of the distributed system. P2P file sharing system for users to exchange resources to provide a great convenience, but the authenticity of these resources can not be guaranteed, open and anonymous P2P file sharing system allows any node to join, some malicious node may cause harm to the system exacerbated insecurity shared file system, and they are difficult to find and locate, it is necessary to take certain precautions to identify and reduce the destruction of the the malicious node file sharing system. File sharing system for the P2P network security issues, according to the evaluation of the credibility of the system in real life, simultaneous analysis of several P2P network security solutions defects, the credibility of the evaluation system is designed based on the contents of the file and node behavior evaluation. The system can be formed for each file independent evaluation of the results, it can be used to describe the authenticity of the documents, and available for download for each node reference. Through the calculation of the evaluation of shared files, the number of shared files, the line length of time, the average bandwidth and other factors come to the credibility of the value of the node, in order to determine the behavior of the node. Show that the system has correctness and feasibility of the evaluation system. Designed and implemented to verify the feasibility of the evaluation system in the whole distribution network structured structured evaluation system based on the credibility of the whole distribution network file sharing system for that. DHT agreement is extended, this evaluation system to adapt to the DHT network. System to provide resource accurate search and authenticity of the document based on the DHT network description, thus guiding nodes selectively download content. To prevent malicious destruction of nodes on a shared file system, the system is able to limit the malicious node peer-to-peer connection, control the uploading and downloading of malicious node even prohibit access network, to ensure the accuracy and authenticity of the P2P file sharing system resources .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer network architecture and design
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