CSR/PDOS: Security and Incentives for Overlay Network Infrastructure

CNS-0509297 CSR/PDOS：覆盖网络的安全和激励基础设施摘要：提出的研究覆盖网络系统在很大程度上被设计成在每个节点都按照规定协作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，这种模型非常成功，但这限制了覆盖系统在更一般的情况下操作，当它们可能在不受信任的最终用户计算机上操作时。这样的用户在经济上是理性的，这意味着他们将寻求在尽可能少贡献自己的资源的情况下从网络中获得尽可能多的好处。我们的研究将检查这些系统的扩展，在这些系统中，节点执行记账，允许它们跟踪哪些节点运行正确，哪些节点运行不正确，从而有可能向提供优先服务的节点提供优先服务。这些和其他相关技术最终将导致激励兼容的设计，从而支持新一代对等应用程序，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FreePastry项目的一部分进行传播，该项目提供各种覆盖网络服务的高质量和可扩展实现，并在BSD风格的许可下提供。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.