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» Against Spyware Using CAPTCHA in Graphical Password Scheme
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AINA
2010
IEEE
9 years 1 months ago
Against Spyware Using CAPTCHA in Graphical Password Scheme
—Text-based password schemes have inherent security and usability problems, leading to the development of graphical password schemes. However, most of these alternate schemes are...
Liming Wang, Xiuling Chang, Zhongjie Ren, Haichang...
ICIG
2009
IEEE
9 years 2 months ago
Analysis and Evaluation of the ColorLogin Graphical Password Scheme
It is believed that graphical passwords are more memorable than traditional textual passwords, but usually seen as complex and time-consuming for users. Furthermore, most of the e...
Haichang Gao, Xiyang Liu, Ruyi Dai, Sidong Wang, X...
IACR
2016
39views Biometrics» more  IACR 2016»
3 years 4 months ago
Designing Proof of Human-work Puzzles for Cryptocurrency and Beyond
We introduce the novel notion of a Proof of Human-work (PoH) and present the first distributed consensus protocol from hard Artificial Intelligence problems. As the name suggest...
Jeremiah Blocki, Hong-Sheng Zhou
CHI
2008
ACM
9 years 8 months ago
Undercover: authentication usable in front of prying eyes
A number of recent scams and security attacks (phishing, spyware, fake terminals, ...) hinge on a crook's ability to observe user behavior. In this paper, we describe the des...
Hirokazu Sasamoto, Nicolas Christin, Eiji Hayashi
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