Chaotic maps-based password-authenticated key agreement using smart cards

2013 ◽  
Vol 18 (6) ◽  
pp. 1433-1440 ◽  
Author(s):  
Cheng Guo ◽  
Chin-Chen Chang
Keyword(s):  
Key Agreement ◽  
Chaotic Maps ◽  
Smart Cards ◽  
Authenticated Key Agreement

scholarly journals Security Enhanced Anonymous Multiserver Authenticated Key Agreement Scheme Using Smart Cards and Biometrics

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Younsung Choi ◽  
Junghyun Nam ◽  
Donghoon Lee ◽  
Jiye Kim ◽  
Jaewook Jung ◽  
...  
Keyword(s):  
Key Agreement ◽  
User Authentication ◽  
Mutual Authentication ◽  
Smart Cards ◽  
Security Requirements ◽  
Impersonation Attack ◽  
Single Server ◽  
Authenticated Key Agreement ◽  
Session Key ◽  
Authentication Schemes

An anonymous user authentication scheme allows a user, who wants to access a remote application server, to achieve mutual authentication and session key establishment with the server in an anonymous manner. To enhance the security of such authentication schemes, recent researches combined user’s biometrics with a password. However, these authentication schemes are designed for single server environment. So when a user wants to access different application servers, the user has to register many times. To solve this problem, Chuang and Chen proposed an anonymous multiserver authenticated key agreement scheme using smart cards together with passwords and biometrics. Chuang and Chen claimed that their scheme not only supports multiple servers but also achieves various security requirements. However, we show that this scheme is vulnerable to a masquerade attack, a smart card attack, a user impersonation attack, and a DoS attack and does not achieve perfect forward secrecy. We also propose a security enhanced anonymous multiserver authenticated key agreement scheme which addresses all the weaknesses identified in Chuang and Chen’s scheme.

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