The Study of Node Behavior in Trust-based Peer-to-Peer Networks

• Main Authors: Yu-Shen Chiang, 江昱昇
• Other Authors: Kuo-Hui Tsai
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/25416004133405656714

碩士 === 國立臺灣海洋大學 === 資訊工程學系 === 98 === Nowadays under the prosperity of network technology, Peer-To-Peer network has become one of the most popular protocols to transfer files. Content pollution is a common issue in Peer-To-Peer file sharing system. Polluters might forge the content of files with Malware and share polluted files in Peer-To-Peer network. Users who download the polluted files might suffer huge losses. The mechanism proposed by Costa and Almeida (2007) is composed of peer reputation and object reputation. Users decide if the file could be downloaded via the reputation from other users and punish polluters via users' mutual reputation. It can stop the spread of polluted files and isolate polluters. However, in the research of Costa and Almeida, only simple polluter behavior was discussed. In this study, we show that complicated polluter behavior may compromise the mechanism. Some possible solutions are examined to counter strike the complicated polluter behavior.