Encryption for modulated backscatter systems
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United States of America Patent
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-
Oct 10, 2000
Grant Date -
N/A
app pub date -
Dec 31, 1996
filing date -
Dec 31, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tag and an interrogator exchange proprietary information using Modulated BackScatter (MBS) technology. A method for encrypting the RFID user's PIN and thereby making the interception and the subsequent illegal use of RFID accounts at least as difficult as a present day ATM cards. For example, the encryption method can be based upon the US Digital Encryption Standard (DES), either first or third level. The Tag's personal encryption key is only known by the financial database and the RFID Tag. This method can be applied to any type of financial, debt, identification, or credit card.
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