中文摘要：

随着无线传感器网络的快速发展,对外部用户的身份进行确认已成为获取传感器网络中实时数据所要解决的关键问题。在对无线传感器网络中双因素用户认证密钥协商方案系统的研究基础上,指出Kalra的用户认证方案存在安全缺陷,随后针对于现实应用中敌手的能力提出一种新的可证安全方案。新方案在满足用户匿名性的同时,能达到真正的双向认证,并在针对WSN的双因素认证方案安全模型中给出安全性证明。与已有的同类方案对比,该方案具有更高的安全性和效率,更适合资源受限环境及现实应用。

英文摘要：

With the development of wireless sensor network（ WSN）,user authentication in WSN is a critical security issue due to their unattended and hostile deployment in the field. In order to protect the security of real-time data query from an external user,many papers proposed two factor（ password and smart-card） user authentication schemes. This paper reviewed the scheme proposed by Kalra et al. It firstly found that the scheme was vulnerable. It proposed a robust and efficient password based authentication scheme which was secure against all well-known security attacks,and proved its security properties in Nam＇s extended model. Security and performance analysis demonstrate that compared to the existing schemes,this proposal is more secure and efficient.