Method and apparatus for performing enhanced time-based authentication
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United States of America Patent
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Apr 22, 2008
Grant Date -
Jun 5, 2003
app pub date -
Dec 4, 2001
filing date -
Dec 4, 2001
priority date (Note) -
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Abstract
A time-based method for generating an authentication code associated with an entity uses an authentication code generated from a secret, a dynamic, time-varying variable, and the number of previous authentication code generations within the particular time interval. Other information such as a personal identification number (PIN) and a verifier identifier can also be combined into the authentication code.
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