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US 2004/0172535 A1Published application
Identity authentication system and method
AssigneeRSA Security Inc.
InventorsMarkus Jakobsson, Ari Juels, Burton S. Kaliski JR.
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Abstract
A method and system for generating an authentication code that depends at least in part on a dynamic value that changes over time, an event state associated with the occurrence of an event, and a secret associated with an authentication device. By generating the authentication code responsive to an event state, an identity authentication code can be used to verify identity and to communicate event state information, and to do so in a secure manner.
Claims1
A method for generating an identity authentication code associated with an authentication device, comprising the steps of:
- storing an event state in an authentication device;
- modifying the event state in response to a reportable event;
- and
- generating an identity authentication code that depends at least in part on (i) a dynamic value, (ii) the event state, and (iii) a secret associated with the device.
1 more element
Dependencies are inferred from the claim text.