基于口令的身份認(rèn)證是目前多數(shù)應(yīng)用系統(tǒng)所采用的安全機制。動態(tài)口令是身份認(rèn)證機
制新的發(fā)展方向。本文詳細(xì)闡述了常用的三種動態(tài)口令機制，并對它們的安全性進(jìn)行了分析。
關(guān)鍵詞：動態(tài)口令 時間同步 事件同步 挑戰(zhàn)/應(yīng)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