动态口令身份认证机制及其安全性研究

基于口令的身份认证是目前多数应用系统所采用的安全机制。动态口令是身份认证机
制新的发展方向。本文详细阐述了常用的三种动态口令机制，并对它们的安全性进行了分析。
关键词：动态口令 时间同步 事件同步 挑战/应答 安全性

Research on Dynamic Password Identity Authentication Mechanism and Its Security
Gu Yunhua , Liu Suying (School of Computer and Software , Nanjing University of Information Science and Technology , Nanjing , Jiangsu , 210044) Abstract: Identity Authentication based on password is main security mechanism in many application systems. Dynamic password is the trend of the Identity Authentication mechanism’s development. The three common dynamic password mechanisms in use are described in details in this article and their security is also analyzed.
Keywords: dynamic password; time synchronization; event synchronization; challenge/response; security