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CHIP AUTHENTICATION USING MULTI-DOMAIN INTRINSIC IDENTIFIERS

  • US 20140100807A1
  • Filed: 10/10/2012
  • Published: 04/10/2014
  • Est. Priority Date: 10/10/2012
  • Status: Active Grant
First Claim
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1. A method for authenticating an integrated circuit chip, comprising:

  • establishing multiple domains for the chip;

    recording at least one identification string from each of a first subset of domains from the multiple domains of the chip during manufacture of the chip, wherein the first subset comprises at least two domains;

    receiving a second subset of identification strings from at least two domains of the chip during an authentication attempt, wherein the second subset of the identification strings is a subset of the first subset of identification strings;

    comparing the second subset of the received identification strings with the recorded identification strings; and

    designating the chip as authentic in response to a third subset of the received identification strings matching recorded identification strings, wherein the third subset of the identification strings is a subset of the second subset of identification strings.

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