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A Simple Sector-Based Textual-Graphical Password Scheme with Resistance to Login-Recording Attacks
Wei-Chi KU Bo-Ren CHENG Yu-Chang YEH Chia-Ju CHANG
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/02/01
Online ISSN: 1745-1361
Type of Manuscript: LETTER
Category: Information Network
accidental login, login-recording attack, shoulder-surfing attack, textual-graphical password,
Full Text: PDF(491.5KB)>>
Recently, Ku et al. proposed a sector-based graphical password scheme, RiS, with dynamically adjustable resistance to login-recording attacks. However, since most users are more familiar with textual passwords than graphical passwords, we propose a secure and efficient textual-graphical password scheme, T-RiS, which is a variant of RiS. The T-RiS user can efficiently complete the login process in an environment under low threat of login-recording attacks and securely complete the login process in an environment under high threat of login-recording attacks. T-RiS can be used in environments where the users are more familiar with passwords based on texts than passwords based on icons/images and the number of login sessions the adversary can record is usually less than five.