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Abstract

With the rapid development of information technology, peer to peer network, also known as peer computing (Peer-to-Peer, P2P) to become a research focus. Peer to peer network system in each member (user nodes) status are equal, the traditional client and server-side differences disappeared, while the members of the system plays a client and server roles. P2P technology to fully utilize the network edge user resources, to achieve the user directly between information sharing and exchange, to speed up the search to locate and download resource, providing a mass data storage, resulting in collaborative computing, distributed storage and file information sharing and other fields has been widely used. But peer network technology brings not only opportunities, as well as challenges. Peer network with anonymity, dynamic and openness to provide users with convenient also become malicious users, destroy network attacks and other acts of security risks. This series of safety problems arising mainly due to peer network technology in the initial design did not consider the safety factor. How to establish a mechanism to identify the peer to peer network, constraints, and eliminate malicious behavior of malicious nodes, weakening malicious nodes harm to the network, become a hot research. Where each node in the network to establish credibility value, in order to determine the degree of node reputation increasingly attracted everyone's attention. Because he complies with human society relations interpersonal networks, trust relationships between individuals sustains the whole relationships. In this paper, based on improved Chord protocol peer network trust model to solve the malicious nodes in the network fraud. The model is based on a domain, the domain managed by the super-node, inter-domain using the Chord protocol backbone through the super-node and the exchange of information, thus reducing the heterogeneity of nodes in the network impact, reducing some nodes frequently join and leave network system caused by shock, improve the network utilization. Nodes in the network segment using the file sharing technology to download resources, when a node needs to download the file, notice its friendly node node-friendly download files according to their capacities in different segments and friendly node through collaborative work to improve the response speed . In the reference model of social networks based on trust relationships presented in the peer network system to establish a trust relationship mathematical model and the specific algorithm. The algorithm does not use an iterative approach to find the global trust value, but the use of voting principles for global trust value, greatly reducing the system overhead; establish an incentive mechanism, the introduction of time decay factor, encouraging more nodes in the network, better for the network services; event-driven and time to calculate the trust value, reducing the system's message load. By establishing a trust relationship between nodes, effectively inhibited the peer to peer network malicious nodes fraud.

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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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Chord protocol based on improved peer network trust model

Abstract

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