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SELF-AUTHENTICATING CHIPS

  • US 20150295920A1
  • Filed: 04/09/2014
  • Published: 10/15/2015
  • Est. Priority Date: 04/09/2014
  • Status: Active Grant
First Claim
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1. A self-authenticating chip comprising:

  • a first memory region storing a first authentication code;

    a second memory region storing a second authentication code, said second memory region adapted to be unreadable and unmodifiable by said chip or a chip reader;

    a comparator interconnected to said second memory region for providing an indicator of whether given input matches said second authentication code; and

    an authentication circuit interconnected to said comparator and said first memory region;

    said authentication circuit operable to;

    read said first authentication code from said first memory region;

    present said first authentication code to said comparator; and

    in response to receiving an indicator from said comparator indicating that said first authentication code matches said second authentication code;

    unlock at least one of (i) a communication interface of said chip to allow data to be transmitted therethrough to a chip reader and (ii) a third memory region of said chip to allow data to be read therefrom.

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