Cryptanalysis of the Modified Remote Login Authentication Scheme Based on a Geometric Approach
Volume 16, Issue 1 (2005), pp. 37–44
Pub. online: 5 August 2022
Type: Research Article
Open Access
Open Access
Received
1 November 2001
1 November 2001
Published
5 August 2022
5 August 2022
Abstract
In 1995, Wu proposed a remote login authentication scheme based on geometric approach. However, Chien, Jan and Tseng presented a cryptanalysis of Wu’s scheme to show that it is not secure. Moreover, they proposed a modified version of Wu’s scheme. This paper presents there is a serious weakness in this modified remote login authentication scheme. We show that an illegal user can easily forge a valid login request in the modified version proposed previously.
