Computer Science > Cryptography and Security
[Submitted on 26 Jun 2023]
Title:MFDPG: Multi-Factor Authenticated Password Management With Zero Stored Secrets
View PDFAbstract:While password managers are a vital tool for internet security, they can also create a massive central point of failure, as evidenced by several major recent data breaches. For over 20 years, deterministic password generators (DPGs) have been proposed, and largely rejected, as a viable alternative to password management tools. In this paper, we survey 45 existing DPGs to asses the main security, privacy, and usability issues hindering their adoption. We then present a new multi-factor deterministic password generator (MFDPG) design that aims to address these shortcomings. The result not only achieves strong, practical password management with zero credential storage, but also effectively serves as a progressive client-side upgrade of weak password-only websites to strong multi-factor authentication.
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