A Shoulder Surfing Resistant Graphical Authentication System

Autor: Jyh-haw Yeh, Hung-Min Sun, Chia-Yun Cheng, Shiuan-Tung Chen
Rok vydání: 2018
Předmět:
Zdroj: IEEE Transactions on Dependable and Secure Computing. 15:180-193
ISSN: 2160-9209
1545-5971
DOI: 10.1109/tdsc.2016.2539942
Popis: Authentication based on passwords is used largely in applications for computer security and privacy. However, human actions such as choosing bad passwords and inputting passwords in an insecure way are regarded as “the weakest link” in the authentication chain. Rather than arbitrary alphanumeric strings, users tend to choose passwords either short or meaningful for easy memorization. With web applications and mobile apps piling up, people can access these applications anytime and anywhere with various devices. This evolution brings great convenience but also increases the probability of exposing passwords to shoulder surfing attacks. Attackers can observe directly or use external recording devices to collect users’ credentials. To overcome this problem, we proposed a novel authentication system PassMatrix, based on graphical passwords to resist shoulder surfing attacks. With a one-time valid login indicator and circulative horizontal and vertical bars covering the entire scope of pass-images, PassMatrix offers no hint for attackers to figure out or narrow down the password even they conduct multiple camera-based attacks. We also implemented a PassMatrix prototype on Android and carried out real user experiments to evaluate its memorability and usability. From the experimental result, the proposed system achieves better resistance to shoulder surfing attacks while maintaining usability.
Databáze: OpenAIRE