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Hardware-generated dynamic identifier

  • US 10,567,170 B2
  • Filed: 12/24/2015
  • Issued: 02/18/2020
  • Est. Priority Date: 12/24/2015
  • Status: Active Grant
First Claim
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1. An electronic apparatus, comprising:

  • a hardware-encoded internal private key, comprising a hardware-encoded fuse array not reasonably directly readable without destructively examining the electronic apparatus; and

    one or more logic elements comprising a passive key generation engine, the key generation engine having write permission only to one or more special-purpose memory locations for storing pseudo-unique hardware-generated dynamic identifiers (HGDIs), the key generation engine comprising;

    circuitry to receive an unencrypted third-party key from a third party;

    function circuitry to apply a one-directional operation to the third-party key and the internal private key to generate a pseudo-unique HGDI, wherein the HGDI is unique and persistent with respect to the third party key; and

    derivation circuitry to derive a cypher of the public key and the function circuitry.

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