AT-PAM: an authentication trustworthiness-based PAM

Authors:
Wang Lunwei;Liao Xiangke;Wang Huaimin
Affiliations:
National University of Defense Technology, Changsha, China;National University of Defense Technology, Changsha, China;National University of Defense Technology, Changsha, China
Venue:
InfoSecu '04 Proceedings of the 3rd international conference on Information security
Year:
2004

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Abstract

In order to demonstrate the uncertainties in authentication system and the importance of different authentication mechanisms, this paper imports the uncertainty reasoning in expert system field, puts forwards the authentication trustworthiness factor model, then, this paper associates the authentication trustworthiness with PAM framework, puts forwards the authentication trustworthiness-based PAM (AT-PAM) framework. By authentication trustworthiness computing in AT-PAM framework, the framework gives the user his authentication trustworthiness. By comparing this value with the system logging trustworthiness threshold, the framework gives the final authentication decision. The framework keeps the advantages of PAM framework, solves the uncertainty problem in authentication system, and gives finegrained authentication control.