Jung Hwa Shin , Weon Shin , Kyung Hyune Rhee

The KIPS Transactions:PartA, Vol. 12, No. 6, pp. 493-498, Dec. 2005
10.3745/KIPSTA.2005.12.6.493,   PDF Download:

Abstract

P2P service is a method that can share various information through direct connection between computer of a person who find information and a person who have information without server in the Internet and it is getting a lot of popularity by method for free exchange of file. P2P file sharing systems have become popular as a new paradigm for information exchange. Because all users who use service in P2P file sharing system can use shared files of several users freely by equal access privilege, it is happening the ´free riding´ that only download shared file of other users without share own files. Although a user share a malicious file including virus, worm or file that have title differing with actuality contents, can use file sharing service without limitation. In this paper, we propose a method that restrict access of ´free rider´ that only download using reputation information that indicate reliability of user. Also, we restrict usage on shared file of other users about users who share harmful file.

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