As the number of people using the internet has surged over the past few years, more and more people are choosing to share and retrieve information online. There are several decentralized retrieval applications that provide file-sharing platforms for exactly this purpose. However, these applications cannot guarantee churn resilience, trustworthiness, or low cost of retrieval. Therefore, in this paper, we present a system called trustworthy and churn-resilient academic distribution and retrieval system in P2P networks, or TCR, which: (1) ensures that information will not be centralized by central network administrators; (2) utilizes LSH to classify nodes with similar research topics into a local subnetwork, and applies routing algorithms with trust score equations to determine the next trustworthy node to forward the message, thus ensuring each node can accurately and efficiently find its trustworthy nodes within only a few hops; (3) provides a trustworthy management system that itself deals in trustworthiness, ensuring that even when there is a large proportion of malicious nodes, the system can still detect and punish misbehaving nodes; (4) guarantees that nodes can still retrieve the desired files even when in high-churn networks. We finally demonstrate that our TCR entails low message costs, provides high match rates, detects malicious nodes, and ensures churn resilience and search efficiency when compared to other P2P retrieval systems.

中文翻译：

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TCR：P2P 网络中值得信赖且具有弹性的学术分发和检索系统

随着过去几年使用互联网的人数激增，越来越多的人选择在线共享和检索信息。有几个分散的检索应用程序正是为此目的提供文件共享平台。但是，这些应用程序不能保证流失弹性、可信度或检索成本低。因此，在本文中，我们提出了一个称为 P2P 网络中的可信赖和弹性的学术分发和检索系统或 TCR 的系统，它：（1）确保信息不会被中央网络管理员集中；(2)利用LSH将研究主题相似的节点分类到一个本地子网中，并应用带有信任分数方程的路由算法来确定下一个值得信赖的节点来转发消息，从而确保每个节点都能在短短几跳内准确高效地找到其可信赖的节点；(3) 提供了一个可信赖的管理系统，其本身处理可信赖性，确保即使存在很大比例的恶意节点，系统仍然可以检测和惩罚行为不端的节点；(4) 保证节点即使在高流失网络中仍然可以检索所需的文件。我们最终证明，与其他 P2P 检索系统相比，我们的 TCR 需要低消息成本、提供高匹配率、检测恶意节点并确保流失弹性和搜索效率。确保即使存在较大比例的恶意节点，系统仍然可以检测和惩罚行为不端的节点；(4) 保证节点即使在高流失网络中仍然可以检索所需的文件。我们最终证明，与其他 P2P 检索系统相比，我们的 TCR 需要低消息成本、提供高匹配率、检测恶意节点并确保流失弹性和搜索效率。确保即使存在较大比例的恶意节点，系统仍然可以检测和惩罚行为不端的节点；(4) 保证节点即使在高流失网络中仍然可以检索所需的文件。我们最终证明，与其他 P2P 检索系统相比，我们的 TCR 需要低消息成本、提供高匹配率、检测恶意节点并确保流失弹性和搜索效率。