Smart-blacklisting:P2P文件共享系统假块污染攻击对抗方法

doi:10.3969/j.issn.1000-436x.2013.08.012

Journal on Communications ›› 2013, Vol. 34 ›› Issue (8): 88-94.doi: 10.3969/j.issn.1000-436x.2013.08.012

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Smart-blacklisting:an efficient methodology for mitigating fake block attack in P2P file-sharing systems

Ru-hao YAO¹,Bing-shuang LIU¹,De-shuai QU²,Yuan ZHOU²,Xin-hui HAN¹

¹ Beijing Key Laboratory of Internet Security Technology,Institute of Computer Science and Technology,Peking University,Beijing 100080,China
² National Computer Network Emergency Response Technical Team/Coordination Center of China,Beijing 100029,China

Online:2013-08-25 Published:2017-08-31
Supported by:
The National Natural Science Foundation of China

Abstract

Abstract:

Fake block attack intends to prolong the downloading time by providing fake data to make the file block fail in the hash check.P2P file-sharing systems are susceptible to fake block attacks,whereby malicious clients are able to make a big impact on users’ downloading experience.An efficient methodology named Smart-blacklisting,which aims to lessen the downloading time and bandwidth wastes interfered by the attack was proposed through using a mathematic model,and the efficiency of this method was analyzed during a simulation experiment.The ovel approach presents 87% downloading time and 50% bandwidth wastes compare less than those of eMule blacklisting method.

Key words: P2P file-sharing system, eMule, BitTorrent, fake block attack

Ru-hao YAO,Bing-shuang LIU,De-shuai QU,Yuan ZHOU,Xin-hui HAN. Smart-blacklisting:an efficient methodology for mitigating fake block attack in P2P file-sharing systems[J]. Journal on Communications, 2013, 34(8): 88-94.

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References 20

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符号	含义
N	正常上传节点数
M	假块污染攻击节点数
pw	下载并行度
P_succeed	P(单次下载成功)
P_fail	P(单次下载失败)
P_x-attacknode	P(x个攻击节点│单次下载失败)
E_ar-df	E(攻击节点率│单次下载失败)
E_ar	E(单次下载包含攻击节点率)
E_rt-sb	E(Smart-blacklisting重试下载次数)
E_rt-eMule	E(eMule重试下载次数)

参数名	参数值
正常上传节点数	N=100
假块污染攻击节点数	M
攻击节点判定阈值	T
攻击强度	M/N
节点并行度	pw=20
下载文件块数	partFileNum=100
单个partFile包含的block数	53（与eMule系统一致）
单个block大小	blockSize=180 KB
文件大小	954 MB

Smart-blacklisting:an efficient methodology for mitigating fake block attack in P2P file-sharing systems

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