University of Ottawa - Carleton University
Ottawa-Carleton Institute for Computer Science (OCICS) Presentation
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November 9, 2012 @ 10:00a.m.
"Tapas: Design, Implementation, and Usability Evaluation of a Password Manager".
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Speaker: Daniel McCarney
Location: 3101 CB (Canal Building) |
ABSTRACT
Passwords continue to prevail on the web as the primary method for user authentication despite their well-known security and usability drawbacks. Password managers offer some improvement without requiring server-side changes. In this work, we evaluate the security of dual-possession authentication, an authentication approach offering encrypted storage of passwords and theft-resistance without the use of a master password. We further introduce Tapas, a concrete implementation of dual-possession authentication leveraging a desktop computer and a smartphone. Tapas requires no server-side changes to websites, no master password, and
protects all the stored passwords in the event either the primary or secondary device (e.g., computer or phone) is stolen. To evaluate the viability of Tapas as an alternative to traditional password managers, we performed a 30 participant user study comparing Tapas to two configurations of Firefoxâs built-in password manager. We then improved Tapas by incorporating feedback from this study, and reevaluating it with an additional 10 participants.
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