Usability and security challenges with standard text passwords have led researchers and
professionals to consider alternative authentication schemes. This thesis explores the …

Passwords are the most widely used form of online user authentication. In a traditional
setup, the user, who has a human-memorable low entropy password, wants to authenticate …

Two-factor authentication provides a significant improvement over the security of traditional
password-based authentication by requiring users to provide an additional authentication …

Passwords are the most widely used factor in various areas such as secret sharing, key
establishment, and user authentication. Single password protocols are proposed (starting …

Passwords are the most common way of authentication. Generally, people tend to use the
same password for numerous online servers. However, passwords have various …

Users generally choose weak passwords which can be easily guessed. On the other hand,
adoption of alternatives to text passwords has been slow due to cost and usability factors …

Single password authentication (SPA) schemes are introduced to overcome the challenges
of traditional password authentications, which are vulnerable to offline dictionary, phishing …

To improve manageability and strength of user-chosen passwords, we propose a multi-word
password scheme called Myphrase. Contrary to the often-repeated but failed policy of …

Passwords are the most widely used form of online user authentication. In a traditional
setup, the user, who has a human-memorable low entropy password, wants to authenticate …

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