Method and system for generating time-based identifiers

Details Method and system for generating time-based identifiers Method and system for generating time-based identifiers

2004-04-21

2009-08-25

Hoffman, Brandon S (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S044000

Reexamination Certificate

active

07581108

ABSTRACT:
Methods and systems for generating time-based identifiers that are used for identifying items is described. In one embodiment, a master key is assigned to an electronic tag. Time-based other keys are generated based on the master key. Time-based identifiers are generated based on the time-based other keys. The time-based identifiers are useful only for a period of time to a holder of the time-based other keys.

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