一种用于P2P文件共享网络的匿名通信方案

摘要

Anonymity communication can hide the communication relationship between the parties,so that an eavesdropper can not determine the identities of the parties of the communication.Most P2P file-sharing networks do not provide anonymity service,and this paper presents an anonymity communication scheme for P2P file-sharing networks.The study uses the basic idea of Crowds anonymity communication technology,namely "blending into a crowd",which uses the way of probability forwarding to determine the message is sent directly to the server or to the "crowd" of other members.In addition,the study also offers an adjustable degree of anonymity,because anonymity is often achieved at the expense of the efficiency.Therefore,the trade-off between anonymity and efficiency is impor-tant.An adjustable degree of anonymity can ensure that the diverse needs of different users for anonymity and perform-ance can be satisfied.%匿名通信主要解决的问题是隐藏通信双方的通信关系,使窃听者无法判断通信双方的身份和通信关系,从而提供人们隐私保护.P2P 文件共享网络大多不提供匿名服务,本文提出一种匿名通信方案,用于 P2P 文件共享网络,该方案采用Crowds匿名通信技术的基本思想,即"把个人隐藏在群体中",通过概率转发的方式,来决定消息是被直接发送给服务器还是"群体"中的其他成员.除此以外,该方案还提供可调节的匿名度,因为匿名性的获取往往是以性能的牺牲为前提而实现的.因此,可调节的匿名度可以保证不同用户对匿名度和性能的不同需求.