作者: Xiong Li , Jianwei Niu , Junguo Liao , Wei Liang
DOI: 10.1002/DAC.2676
关键词: Computer security 、 Password 、 Challenge–response authentication 、 Password policy 、 Password strength 、 Zero-knowledge password proof 、 S/KEY 、 Computer science 、 Cognitive password 、 One-time password
摘要: In the authentication scheme, it is important to ensure that user's identity changed dynamically with different sessions, which can protect privacy information from being tracked. Recently, Chang et al. proposed an untraceable dynamic identity-based remote user scheme verifiable password update. However, our analysis show property of untraceability easily be broken by legal system. Besides, we find vulnerable offline guessing attack, impersonation stolen smart card and insider attack. Copyright © 2013 John Wiley & Sons, Ltd.