Tag-handle-based authentication of RFID readers
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United States of America Patent
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Mar 13, 2018
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app pub date -
Aug 18, 2017
filing date -
Mar 14, 2013
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Abstract
An RFID tag may execute instructions from an authenticated RFID reader. A tag determines a handle and a first parameter, both of which may be random numbers, and sends the handle to a reader. Upon receiving a challenge from the reader, the tag determines and sends a cryptographic response to the challenge based on an algorithm, a tag key, the first parameter, and the challenge. Upon receiving a message with a second parameter and a tag instruction, the tag executes the tag instruction upon verifying that the second parameter derives from the first parameter and the tag handle.
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