Weaknesses of a Dynamic ID Based Remote User Authentication Protocol for Multi-Server Environment

• 作者: Adireddi Praveen R. Madhusudhan
• 来源期刊: 电脑和通信(英文)
• 学科: 工学
• 关键词: AUTHENTICATION SMART CARD Dynamic ID MULTI-SERVER Environments PASSWORD
• 年，卷（期）: 2014,（4）
• 页码范围: 196-200
• 页数: 5页
• 分类号: TP39

摘要

Currently, smart card based remote user authentication schemes have been widely adopted due to their low cost and convenient portability. With the purpose of using various different internet services with single registration and to protect the users from being tracked, various dynamic ID based multi-server authentication protocols have been proposed. Recently, Li et al. proposed an efficient and secure dynamic ID based authentication protocol using smart cards. They claimed that their protocol provides strong security. In this paper, we have demonstrated that Li et al.’s protocol is vulnerable to replay attack, denial of service attack, smart card lost attack, eavesdropping attack and server spoofing attacks.