一种P2P网络中对等结点间的身份认证方法

A Peer-to-Peer Node Authentication Method in Peer-to-Peer Network

随着P2P技术的快速发展,其在网络安全方面的问题也越来越突出,尤其在对等节点间的身份认证方面缺乏简单、可靠的方法来防止非法节点加入P2P网络实施攻击。现有身份认证方法多采用集中式认证,无法充分利用P2P网络特性,因此提出了一种基于"身份凭证"的对等节点间身份认证方法,每个用户登录时从认证服务器获得其身份凭证后便可以不依赖于认证服务器而完成对等节点间的身份认证,减轻了认证服务器的压力,在保障可靠身份认证的同时降低了认证过程的复杂度。

Various file sharing and streaming applications utilize P2P technologies to provide better service, many serious security problems obstruct their widely adoption. Especially, it lacks a simple and reliable mechanism to authenticate peers＇ identities. Related works usually propose centralized authentication methods, which are not quite suitable for P2P network. So an identity certificate based method used between peers authentication is presented. Every peer will get their own identity certificate from an authentication server when then login, then they could launch authentication process with other peers without the participation of the authentication server. This authentication mechanism could provide strong reliable identity authentication with less complexity, and greatly reduce the pressure of the central authentication server.