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An interoperable and secure architecture for internet-scale decentralized personal communication.

机译:用于互联网规模的分散式个人通信的可互操作且安全的体系结构。

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摘要

Interpersonal network communications, including Voice over IP (VoIP) and Instant Messaging (IM), are increasingly popular communications tools. However, systems to date have generally adopted a client-server model, requiring complex centralized infrastructure, or have not adhered to any VoIP or IM standard. Many deployment scenarios either require no central equipment, or due to unique properties of the deployment, are limited or rendered unattractive by central servers. To address these scenarios, we present a solution based on the Session Initiation Protocol (SIP) standard, utilizing a decentralized Peer-to-Peer (P2P) mechanism to distribute data. Our new approach, P2PSIP, enables users to communicate with minimal or no centralized servers, while providing secure, real-time, authenticated communications comparable in security and performance to centralized solutions.We present two complete protocol descriptions and system designs. The first, the SOSIMPLE/dSIP protocol, is a P2P-over-SIP solution, utilizing SIP both for the transport of P2P messages and personal communications, yielding an interoperable, single-stack solution for P2P communications. The RELOAD protocol is a binary P2P protocol, designed for use in a SIP-using-P2P architecture where an existing SIP application is modified to use an additional, binary RELOAD stack to distribute user information without need for a central server.To meet the unique security needs of a fully decentralized communications system, we propose an enrollment-time certificate authority model that provides asserted identity and strong P2P and user-level security. In this model, a centralized server is contacted only at enrollment time. No run-time connections to the servers are required.Additionally, we show that traditional P2P message routing mechanisms are inappropriate for P2PSIP. The existing mechanisms are generally optimized for file sharing and neglect critical practical elements of the open Internet --- namely link-level security and asymmetric connectivity caused by Network Address Translators (NATs). In response to these shortcomings, we introduce a new message routing paradigm, Adaptive Routing (AR), and using both analytical models and simulation show that AR significantly improves message routing performance for P2PSIP systems.Our work has led to the creation of a new research topic within the P2P and interpersonal communications communities, P2PSIP. Our seminal publications have provided the impetus for subsequent P2PSIP publications, for the listing of P2PSIP as a topic in conference calls for papers, and for the formation of a new working group in the Internet Engineering Task Force (IETF), directed to develop an open Internet standard for P2PSIP.
机译:人际网络通信,包括IP语音(VoIP)和即时消息(IM),已成为越来越流行的通信工具。但是,迄今为止,系统通常采用了客户端-服务器模型,需要复杂的集中式基础结构,或者未遵循任何VoIP或IM标准。许多部署方案不需要中央设备,或者由于部署的独特属性而受到中央服务器的限制或使其变得没有吸引力。为了解决这些情况,我们提出了一种基于会话发起协议(SIP)标准的解决方案,该方案利用分散的点对点(P2P)机制来分发数据。我们的新方法P2PSIP使用户能够与最少的中央服务器进行通讯,甚至不与中央服务器进行通信,同时提供安全,实时,经过身份验证的通信,其安全性和性能可与集中式解决方案媲美。我们提供了两个完整的协议说明和系统设计。第一个是SOSIMPLE / dSIP协议,是一种S2P上P2P解决方案,利用SIP来传输P2P消息和个人通信,从而产生了可互操作的单栈P2P通信解决方案。 RELOAD协议是一种二进制P2P协议,旨在用于SIP-using-P2P体系结构中,该体系结构将现有SIP应用程序修改为使用附加的二进制RELOAD堆栈来分发用户信息,而无需中央服务器。对于完全分散的通信系统的安全性需求,我们提出了一种注册时证书颁发机构模型,该模型可提供断言的身份以及强大的P2P和用户级安全性。在此模型中,仅在注册时联系集中式服务器。不需要与服务器的运行时连接。此外,我们证明了传统的P2P消息路由机制不适用于P2PSIP。现有的机制通常针对文件共享进行了优化,并且忽略了开放Internet的关键实用元素,即链接级安全性和由网络地址转换器(NAT)引起的非对称连接。针对这些缺点,我们引入了一种新的消息路由范式,即自适应路由(AR),并同时使用分析模型和仿真表明,AR显着提高了P2PSIP系统的消息路由性能。我们的工作促成了一项新的研究P2P和人际交流社区中的主题P2PSIP。我们的开创性出版物为以后的P2PSIP出版物,将P2PSIP列为电话会议的主题以及在互联网工程任务组(IETF)中组建新工作组提供了动力,这些工作组旨在建立开放的P2PSIP的互联网标准。

著录项

  • 作者

    Bryan, David Alan.;

  • 作者单位

    The College of William and Mary.;

  • 授予单位 The College of William and Mary.;
  • 学科 Speech Communication.Computer Science.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 225 p.
  • 总页数 225
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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