Secure authentication systems and methods

Details Secure authentication systems and methods Secure authentication systems and methods

2008-06-03

2008-06-03

Kindred, Alford (Department: 2181)

Information security

Access control or authentication

C726S001000, C726S005000, C726S007000, C726S018000, C726S019000

Reexamination Certificate

active

07383570

ABSTRACT:
Systems and methods are provided for authentication by combining a Reverse Turing Test (RTT) with password-based user authentication protocols to provide improved resistance to brute force attacks. In accordance with one embodiment of the invention, a method is provided for user authentication, the method including receiving a username/password pair associated with a user; requesting one or more responses to a first Reverse Turing Test (RTT); and granting access to the user if a valid response to the first RTT is received and the username/password pair is valid.

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