One-time authentication system

An authentication system includes a plurality of electronic tags (120, 122, 124) that are each associated with a respective unique identity ID. The tags include a memory (220) with a first memory location (222) for storing a pre-computed challenge and a second memory location (224) for storing a pre...

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Bibliographic Details
Main Author VAN RIJNSWOU SANDER,BRANDS JAN RENE
Format Patent
LanguageEnglish
Published 25.07.2007
Subjects
CALCULATING
CHECKING-DEVICES
COIN-FREED OR LIKE APPARATUS
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:An authentication system includes a plurality of electronic tags (120, 122, 124) that are each associated with a respective unique identity ID. The tags include a memory (220) with a first memory location (222) for storing a pre-computed challenge and a second memory location (224) for storing a pre-computed response that is associated with the challenge. The first memory location (222) is non-readable from outside the tag. An access circuit (210) only provides the response after having received a challenge that matches the challenge stored in the first memory location. A reader station (110) obtains the identity associated with a tag. It then determines a corresponding challenge and sends the challenge to the tag. It receives a response from the tag and verifies the authenticity of the tag by comparing the received response to a response that corresponds to the challenge.
Bibliography:Application Number: CN200580026938