适用于智能电网的组合公钥密码体制研究  

Research on Combined Public Key Cryptographic Scheme for Smart Grid

作　　者：韩亚楠[1] 李发根[1] 

机构地区：[1]电子科技大学计算机科学与工程学院,成都611731

出　　处：《密码学报》2016年第4期340-351,共12页Journal of Cryptologic Research

基　　金：国家自然科学基金(61272525);中央高校基本科研业务费(ZYGX2013J069)

摘　　要：智能电网作为新一代的电力系统,是利用了先进的设备技术、传感和测量技术以及现代信息通讯技术等的智能电力系统.相对于传统的电网,智能电网的一个显著特点是实现了智能电表和电表数据管理系统之间的双向通信.这使得智能电网能够实时地监控用户的用电信息,从而更好地维护电力系统的稳定.同时,信息的频繁交互使智能电网更容易遭受攻击者的监测、篡改、伪造等攻击.为了保护智能电网的安全,智能电网通信消息的机密性和认证性成为近几年研究的热点.为了解决上述问题,在本篇论文中,我们将组合密码应用到智能电网中,从而设计出了一个高效的密码通信协议来解决这些安全问题.本文的主要工作包括:第一,我们使用基于身份的在线/离线密码体制设计了一个组合公钥密码方案,并给出了简单的安全性分析.该方案采用在线/离线的方式可以将大部分耗时的复杂运算在可信任的服务器上完成,而智能电网只需要完成少量简单的操作即可.第二,我们设计了一个保障智能电网安全通信的密码协议,并采用逐跳路由传输方式减少了智能电表和电表数据管理系统之间的通信延时.因此该协议能更好地保障智能电网的实时特性.此外我们具体的展示了整个协议的通信过程,并给出该协议的安全和性能分析.Smart grid is a new generation of the power system. It is an intelligent power system using the advanced equipment, sensing and measurement technology and information communication technology. Compared with the traditional power grid, a distinguished characteristic of the smart grid is that it can support two-way communication between the smart meters and the meter data management system. Smart grid can monitor the users' electricity information in near real-time. So it can better maintain the stability of the power system. However, as more and more information needs to exchange in smart grid, it is more vulnerable against the attacks such as eavesdropping, modification and impersonation. In order to provide security protection in smart grid, this paper designs an efficient cryptographic communication protocol by using the combined public key cryptographic scheme. The main work of this paper includes the following two points: The first point is to design an identity-based combined public key cryptographic scheme and give the security proof in the random oracle model. The scheme can arrange the most complex operations to be done by a trusted server, and the smart grid only needs to implement some simple operations. The second point is to design a cryptographic protocol to ensure the security communication of the smart grid. The protocol uses the hop by hop routing to reduce the communication delay. So it can better guarantee the real-time characteristic of the smart grid. In addition, we present a concrete communication process of the protocol, and then give the analysis of security and performance of this protocol.

关 键 词：智能电网 认证性 机密性 组合公钥密码体制 

分 类 号：TN918.4[电子电信—通信与信息系统] TM76[电子电信—信息与通信工程]