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首页> 外文会议>2016 IFIP Networking Conference and Workshops >Mistrustful P2P: Privacy-preserving file sharing over untrustworthy Peer-to-Peer networks
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Mistrustful P2P: Privacy-preserving file sharing over untrustworthy Peer-to-Peer networks

机译：不信任的P2P：在不信任的对等网络上共享隐私保护文件

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摘要

Peer-to-Peer networks are extensively used for large-scale file sharing. As more information flows through these networks, people are becoming increasingly concerned about their privacy. Traditional P2P file sharing systems provide performance and scalability at the cost of requiring peers to publicly advertise what they download. Several P2P privacy-enhancing systems have been proposed but they still require peers to advertise, either fully or partially, what they download. Lacking alternatives, users have adopted anonymity systems for P2P file sharing, misunderstanding the privacy guarantees provided by such systems, in particular when relaying traffic of insecure applications such as BitTorrent. Our goal is to prevent any malicious peer(s) from ascertaining users' content interests so that plausible deniability always applies. We propose a novel P2P file sharing model, Mistrustful P2P, that (1) supports file sharing over open and untrustworthy P2P networks, (2) requires no trust between users by avoiding the advertisement of what peers download or miss, and (3) still ensures deterministic protection of user's interests against attacks of size up to a configured privacy protection level. We hope that our model can pave the ground for a new generation of privacy-enhancing systems that take advantage of the new possibilities it introduces. We validate Mistrustful P2P through simulation, and demonstrate its feasibility.
机译：对等网络广泛用于大规模文件共享。随着更多信息流过这些网络，人们越来越关注其隐私。传统的P2P文件共享系统以要求对等方公开发布其下载内容为代价提供性能和可伸缩性。已经提出了几种P2P隐私增强系统，但是它们仍然需要对等方完全或部分地宣传他们下载的内容。由于缺乏替代方案，用户已采用匿名系统进行P2P文件共享，尤其是在中继不安全应用程序（例如BitTorrent）的流量时，误解了此类系统提供的隐私保证。我们的目标是防止任何恶意的对等方确定用户的内容兴趣，以便始终采用合理的否认性。我们提出了一种新颖的P2P文件共享模型：不信任P2P，该模型（1）支持在开放和不信任的P2P网络上共享文件；（2）通过避免公布对等体下载或错过的内容，不需要用户之间的信任；以及（3）确保确定性地保护用户的利益，使其免受规模达到所配置的隐私保护级别的攻击。我们希望我们的模型可以为利用其引入的新可能性的新一代隐私增强系统奠定基础。我们通过仿真验证不信任P2P，并证明其可行性。

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