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计算机工程 ›› 2007, Vol. 33 ›› Issue (17): 165-167. doi: 10.3969/j.issn.1000-3428.2007.17.056

• 安全技术 • 上一篇    下一篇

一种基于非完全公正方的P2P网络公证协议

李玲娟,沈凌童   

  1. (南京邮电大学院计算机学院,南京 210003)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-05 发布日期:2007-09-05

Notarization Protocol of P2P Network Based on Incomplete Fair Mediator

LI Ling-juan, SHEN Ling-tong   

  1. (School of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-05 Published:2007-09-05

摘要: 在系统地分析传统的基于完全公正方的公证协议的基础上,针对P2P网络的特点,提出了一种基于非完全公正方的P2P网络公证协议。该协议采用混合密码体制作为执行载体,协议双方充分掌握通信的主动权,不需要对公正方绝对信任,公正方的执行权限受协议的限制,执行行为亦受协议双方的监控。给出了该协议的交互过程,分析了它的执行效率、安全性能和适用性。分析结果表明,该协议优于基于完全公正方的公证协议。

关键词: P2P网络, 公证协议, 非完全公正方, 混合密码体制, 安全

Abstract: After analyzing the traditional notarization protocol based on complete fair mediator systemically and studying the characteristics of P2P network itself, this paper proposes a notarization protocol of P2P network based on incomplete fair mediator. In this protocol, the mixable cipher system is chosen as a carrier for executing, and both parties of the protocol take the activeness of communication. It is no necessary for them to believe the fair mediator absolutely. The execution purview of the fair mediator is restricted by the protocol, and the execution behavior is also supervised. At last, an alternation process of the protocol is showed, and execution efficiency, security capability and applicability of it are analyzed. The analysis results show that this protocol overmatches the protocol based on complete fair mediator.

Key words: P2P network, notarization protocol, incomplete fair mediator, mixable cipher system, security

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