CSR/PDOS: Security and Incentives for Overlay Network Infrastructure

CSR/PDOS：覆盖网络基础设施的安全性和激励机制摘要：研究建议覆盖网络系统在很大程度上被设计成在每个节点按照指定的方式协同执行协议的世界中运行。节点要么正常运行，要么完全停止工作（即故障停止）。当节点可以相互信任时，这个模型是非常成功的，但这限制了覆盖系统在更一般的情况下运行，当它们可能在不受信任的终端用户计算机上运行时。这些用户在经济上是理性的，这意味着他们会在尽可能少地贡献自己资源的同时，从网络中获得尽可能多的利益。我们的研究将检查这些系统的扩展，其中节点执行会计，允许它们跟踪哪些节点正确执行，哪些节点不正确执行，从而有可能为提供优先服务的节点提供优先服务作为回报。这些和其他相关技术将最终导致激励兼容的设计，从而实现新一代的点对点应用，包括分布式备份系统、分布式文件系统和分布式电子邮件系统。我们的工作将作为freepaststry项目的一部分传播，该项目提供了各种覆盖网络服务的高质量和可扩展的实现，并在bsd风格的许可下可用。同样，我们的工作将成为下一代Tor匿名通信系统的一部分。

CNS-0509297 CSR/PDOS: Security and Incentives for Overlay NetworkInfrastructureAbstract: Proposed ResearchOverlay network systems have largely been engineered to operate in a world where everynode cooperatively executes the protocol as specified. Nodes either operate correctly, orcease to work altogether (i.e., fail-stop). This model is quite successful when nodescan trust one another, but this limits overlay systems from operating in the more generalcase when they might be operating on untrusted, end-user computers. Such users will beeconomically rational, meaning they will seek to get as much benefit from the network aspossible while contributing as little of their own resources. Our research will examineextensions to these systems where nodes perform accounting, allowing them to trackwhich nodes are and are not performing correctly, making it possible to offer preferentialservice to nodes that offer preferential service in return. These and other relatedtechniques will ultimately result in incentives-compatible designs that enable a newgeneration of peer-to-peer applications, including distributed backup systems, distributedfile systems, and distributed email systems. Our work will be disseminated as part of theFreePastry project, which provides a high-quality and scalable implementation of avariety of overlay network services and is available under a BSD-style license. Likewise,our work will become part of the next-generation Tor anonymous communication system.