System and method for generating and authenticating a...

Details System and method for generating and authenticating a... System and method for generating and authenticating a...

2005-02-18

2009-08-25

Moazzami, Nasser G (Department: 2436)

Electrical computers and digital processing systems: support

System access control based on user identification by...

Pin/password generator device

C713S170000, C713S183000, C726S028000, C726S029000

Reexamination Certificate

active

07581113

ABSTRACT:
A system and method for generating and authenticating a password to protect a computer system from unauthorized access. The characters of the password are placed in data packets by an access device. Prior to sending the packets, the device inserts predefined time intervals between each of the data packets. The value of the time intervals is retrieved from a sequence of time intervals that is shared between the access device and an authentication device. The authentication device determines whether the received set of password characters matches a stored set of password characters, measures the time intervals between the packets, and determines whether the measured time intervals match the predefined time intervals. The authentication device positively authenticates the access device only if both the characters and the time intervals match. Periodically, different time intervals from the sequence are inserted to change the password.

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RSA Security, Authenticators,The Gold Standard in Two-Factor User Authentication, www.rsasecurity.com, Feb. 15, 2005.

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