一种基于PKI的P2P身份认证技术

A Peer-to-Peer Identity Authentication Technology Based on PKI

目前P2P技术发展非常迅速并且得到大量应用,但由于P2P网络本身的结构特点使之面临很多安全问题,尤其是身份认证技术几乎在所有主流的P2P软件中研究的都不够细腻,而身份认证却是P2P网络安全的重要组成部分。文中提出一种基于PKI的P2P身份认证技术,在中心化结构P2P网络中设置认证机构,认证机构中存储P2P网络中节点的地址和公私钥对。由于认证机构中公私钥对的唯一性,节点通过私钥加密,公钥解密可以达到确认节点身份的目的,同时可以实现重要信息的加密传输。模拟实验表明该技术有效地提高了中心化结构P2P网络的安全性和健壮性。

P2P technology currently is developing very rapidly and has been widely used, because of characteristics of its network structure, it is facing many security issues, especially the identity authentication technology in almost all mainstream P2P software is not deeply studied yet, and identity authentication is an important component of network security, a peer- to- peer identity authentication technology based on PKI is researched,the center structured peer- to - peer networks setup a certificate authority, the certificate authority keeps peer＇s internet protocol and couple of punic and private keys in center structured peer- to- peer network. Because the couple of public and private keys are unique in the certificate authority, the peer can be identified by using its private key encryption and public key deeryption, it also can be used in encrypting massage, simulation results show that this technology enhances the security and stability efficiency in center structured peer- to - peer networks.