Resisting free-riding behavior in BitTorrent

Resisting free-riding behavior in BitTorrent
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抵制 BitTorrent 中的搭便车行为

DOI:
10.1016/j.future.2009.05.014
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发表时间:
2010-10
期刊:
Future Generation Computer Systems
影响因子:
--
通讯作者:
Changyong Niu
Changyong Niu
中科院分区:
其他
文献类型:
--
作者:
Heng Luo;Jian Wang;Carsten Ullrich;Ruimin Shen;Changyong Niu

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长期以来,人们一直认为BitTorrent对搭便车的行为是强有力的。然而,最近的一些研究表明,行为不端的同龄人下载的内容远远超过他们上传的内容,而搭便车者甚至根本不上传任何内容。为了保证节点间上传的公平性,本文提出了一种基于配额的加密区块交易协议(简称配额加密协议)。其基本思想是,对等体彼此预先支付加密块的“配额”,然后轮流透露解密密钥。仿真结果表明,该算法保证了节点间上传的公平性,使得bt中不存在搭便车行为。
BitTorrent was long believed to be robust to free-riding behavior. Yet, some recent studies show that misbehaving peers download far more than they upload and free riders even upload nothing at all. In order to guarantee the upload fairness among peers, this paper proposes a quota-based encrypted block trading protocol (Quota-Encryption for short). The basic idea is for peers to prepay a “quota” of encrypted blocks to each other and then to alternately reveal decryption keys. Simulation results show that it guarantees better upload fairness among peers, making the free-riding behavior impossible in BitTorrent.
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