ITR - (ASE+NHS) - (DMC+INT+SOC): Resilient Storage and Querying in Decentralized Networks

拟议工作的目标是为在完全非结构化，分散和分布式网络上实现丰富的应用程序集奠定基础。最近，一些不同的研究应用程序已经建立在类似的平台上的上下文中的对等系统。虽然这些研究系统提供了很大的希望，我们认为，为了建立可部署的应用程序，这些系统需要大量的工作。这项工作的动机是在这一领域的开放问题，并组织成三个主要的推力：（1）放置和查找算法，对一系列的对抗性故障模型是鲁棒的，但-相反，例如，DHT-不需要或假设底层网络拓扑上的任何结构;（2）在非结构化环境中对P2P命名空间进行复杂查询的高效和弹性技术;以及（3）允许对等方显式地将个人信任和隐私策略纳入协议操作的方法。该工作是四个应用方面：（1）一个特设的公钥基础设施，（2）一个强大的搜索和查询应用程序的分布式数据，（3）审查的抵抗出版应用程序，（4）一个安全的应用程序。以及（4）一个应用程序，用于有效地临时访问科学数据集。单独而言，这些应用程序中的每一个都是重要的构建块，可以执行我们拟议工作的不同方面，并直接推动科学、工程和国家安全领域的最新发展。它们共同构成了一套令人信服的激励实例，可供在本项目下开展研究。

The goal of the proposed work is to build a foundation for enabling a rich set of applications on entirely unstructured, decentralized, and distributed networks. Recently, a number of different research applications have been built on similar platforms in the context of peer-to-peer systems. While these research systems offer great promise, we believe significant work is required in order to build deployable applications over these systems. This work is motivated by the open issues in this area, and is organized into three major thrusts: (1) placement and lookup algorithms that are robust against a range of adversarial failure models, and yet - in contrast to, e.g., DHTs - do not require or assume any structure on the underlying network topology; (2) efficient and resilient techniques for sophisticated querying of P2P namespaces in unstructured environments; and (3) methods that allow peers to explicitly incorporate individual trust and privacy policies into protocol actions. The work is terms of four applications: (1) an ad-hoc public key infrastructure; (2) a robust search and query application for distributed data; (3) a censorship-resistant publishing application; and (4) an application for efficient ad-hoc access to scientific datasets.Individually, each of these applications are important building blocks that exercise different aspects of our proposed work, and directly advance the state of the art in the sciences, engineering, and national security. Together, they form a compelling set of motivating examples for the research to be conducted under this project.