A new graphical password scheme resistant to shoulder-surfing

Haichang, Gao and Zhongjie, Ren and Xiuling, Chang and Xiyang, Liu and Aickelin, Uwe (2010) A new graphical password scheme resistant to shoulder-surfing. International Conference on CyberWorlds, 2010 . (In Press)

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Shoulder-surfing is a known risk where an attacker can capture a password by direct observation or by recording the authentication session. Due to the visual interface, this problem has become exacerbated in graphical passwords. There have been some graphical schemes resistant or immune to shoulder-surfing, but they have significant usability drawbacks, usually in the time and effort to log in. In this paper, we propose and evaluate a new shoulder-surfing resistant scheme which has a desirable usability for PDAs. Our inspiration comes from the drawing input method in DAS and the association mnemonics in Story for sequence retrieval. The new scheme requires users to draw a curve across their password images orderly rather than click directly on them. The drawing input trick along with the complementary measures, such as erasing the drawing trace, displaying degraded images, and starting and ending with randomly designated images provide a good resistance to shoulder-surfing. A preliminary user study showed that users were able to enter their passwords accurately and to remember them over time.

Item Type:Article
Additional Information:Paper presented at the 2010 International Conference on CyberWorlds, 20-22 October 2010, Singapore.
Schools/Departments:Faculty of Science > School of Computer Science
ID Code:1341
Deposited By:Aickelin, Professor Uwe
Deposited On:14 Oct 2010 13:05
Last Modified:14 Oct 2010 13:05

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