A Smartcard-Based User Authentication Scheme to Ensure the PFS in Multi-Server Environments

Yun-Seok LEE  Eun KIM  Seung-Joon SEOK  Min-Soo JUNG  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.2   pp.619-622
Publication Date: 2012/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.619
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Internet
multi-server,  smart-card,  user authentication,  PFS,  

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Nowadays, a user authentication is very important in network environments. For safe authentication, they came up with six essential conditions in earlier studies. And a variety of mechanisms is presented by research scientists. However, they could not achieve the PFS. Because, though all these schemes are assumed that the communication between a smart card and a host is safe, actually it is not. Therefore, in this paper, we will point out what the communication between a smart card and a host is not safe, and propose a new user authentication mechanism that can reach to the PFS. And also, an encryption algorithm is used about 45% less than earlier studies in our proposed scheme. Thus, we can say that enhance the efficiency.