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TRACEABILITY VERIFICATION SYSTEM, METHOD AND PROGRAM FOR THE SAME

  • US 20100010933A1
  • Filed: 08/05/2009
  • Published: 01/14/2010
  • Est. Priority Date: 07/01/2005
  • Status: Active Grant
First Claim
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1. A traceability system for using a certificate issued by a certificate authority device to trace a supply chain by means of a signature chain, wherein in the supply chain a deliverer receives a supply of parts from disclosed suppliers and undisclosed private suppliers to the delivery destination and ships products;

  • comprising;

    a disclosed supplier device for putting a signature to said signature chain;

    a private supplier device for putting a signature to said signature chain based on a group certificate issued by said certificate authority device;

    a supplier manager device for further signing said signature chain to generate a signature chain to be a verifier;

    a verifier device for verifying said signature chain while maintaining confidentiality of said private suppliers, based on a group public key received from said certificate authority device; and

    an auditor device for identifying said private suppliers.

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