Device authentication
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United States of America Patent
Stats
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Sep 24, 2013
Grant Date -
Nov 22, 2012
app pub date -
Mar 26, 2012
filing date -
Apr 30, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A first device in possession of a value is able to determine, without communicating the value and without communicating any information from which the value can be identified, whether a second device is also in possession of the value. The first device accomplishes this with the assistance of a third device that is able to communicate with the first device and with the second device. The second device also does not communicate the value and does not communicate any information from which the value can be identified. The first device may send additional information to the third device which, if passed to the second device, enables the second device to determine that the first device is in possession of the value. The value may be a secret.
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