System and method for generating and authenticating a computer password
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United States of America Patent
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Aug 25, 2009
Grant Date -
Jul 7, 2005
app pub date -
Feb 18, 2005
filing date -
Feb 14, 2001
priority date (Note) -
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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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