Remote User Authentication Scheme with Key Agreement Providing Forward Secrecy

2015 ◽  
Vol 12 (1) ◽  
pp. 1-12
Author(s):  
Hyunsung Kim
Keyword(s):  
Key Agreement ◽  
User Authentication ◽  
Authentication Scheme ◽  
Forward Secrecy ◽  
Remote User Authentication ◽  
User Authentication Scheme ◽  
Remote User

scholarly journals Revisiting the “An Improved Remote user Authentication Scheme with Key Agreement”

2018 ◽  
Vol 11 (4) ◽  
pp. 190-194
Author(s):  
YALIN CHEN ◽  
JUE-SAM CHOU ◽  
I - CHIUNG LIAO
Keyword(s):  
Smart Card ◽  
Key Agreement ◽  
User Authentication ◽  
Authentication Scheme ◽  
Session Key ◽  
Password Guessing Attack ◽  
Remote User Authentication ◽  
User Authentication Scheme ◽  
Guessing Attack ◽  
Remote User

Recently, Kumari et al., pointed out that Chang et al.’s scheme “Untraceable dynamic-identity-based remote user authentication scheme with verifiable password update” has several drawbacks and does not provide any session key agreement. Hence, they proposed an improved remote user authentication scheme with key agreement based on Chang et al.’s protocol. They claimed that the improved method is secure. However, we found that their improvement still has both anonymity breach and smart card loss password guessing attack which cannot be violated in the ten basic requirements advocated for a secure identity authentication using smart card by Liao et al. Thus, we modify their protocol to encompass these security functionalities which are needed in a user authentication system using smart card.

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