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Peer network of trust mechanism

Author: YuLeiYu
Tutor: FuXiaoQing
School: Huazhong University of Science and Technology
Course: Information Security
Keywords: Peer network Trust model Reputation feedback mechanism Reputation value
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 20
Quote: 0
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Abstract


Peer networks for its self-organization, take advantage of the distributed nature of a single node resources, distributed computing, distributed queries, distributed storage, file sharing, and played a huge role in making massive information in the network does not rely on a server free dissemination. Because the system openness, autonomy and reciprocity, in bringing freedom also makes the trust between nodes, forgery node resources, riding in the network to flooding. To protect the system highly superior, sustainable development, protection systems must be open between nodes while preventing fraud, deception and joint \In the fight against these bad behavior in the process, there have been a lot of research, including reputation-based feedback mechanism model has a good performance, but there are also many problems, there is an existing model for a one-sided issue credible and efficiency is not high An improved model of reputation-based feedback mechanism, the integration of ant colony algorithm in terms of handling characteristics of dynamic systems, a good solution to this problem. The main contribution of this model: 1. Peer networks highly dynamic features make the common security algorithms is difficult to be applied in dealing with dynamic networks, ant colony algorithm has its advantages, according to the properties of peer to peer network, the improved ant colony algorithm is applied to find recommended resource path, the path of the ants use the pheromone value to select the path with high pheromone resource download, download the node after the end of the health status of the download resource and download speed and other factors on server resources evaluation, based on the evaluation on the path to change the pheromone so that it can reflect the current situation, making better quality resources on-line, a good solution to the problem untrusted nodes. (2) For a more comprehensive understanding of server resources, you need to download the other nodes in the history of the resource evaluation - reputation value as another credible attribute node, add the model to evaluate the node, so that nodes Evaluation on the establishment of a node in a global, historical records on simulated scenarios of human social interaction, making the model more reliable. Finally the model was implemented, the test results show that with the current trust model based on reputation mechanism, this model very good to prevent malicious nodes, with fraud and pollution file transfers, making the network at high health Ecological run.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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