The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2015
Filed:
Aug. 21, 2013
David H. Hartley, Seaview Downs, AU;
Thomas E. Tkacik, Phoenix, AZ (US);
Carlin R. Covey, Tempe, AZ (US);
Lawrence L. Case, Austin, TX (US);
Rodney D. Ziolkowski, Austin, TX (US);
David H. Hartley, Seaview Downs, AU;
Thomas E. Tkacik, Phoenix, AZ (US);
Carlin R. Covey, Tempe, AZ (US);
Lawrence L. Case, Austin, TX (US);
Rodney D. Ziolkowski, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Embodiments include methods for securely provisioning copies of an electronic circuit. A first entity embeds one or more secret values into copies of the circuit. A second entity: 1) embeds a trust anchor in a first copy of the circuit; 2) causes the circuit to generate a message signing key pair using the trust anchor and the embedded secret value(s); 3) signs provisioning code using a code signing private key; and 4) sends a corresponding code signing public key, the trust anchor, and the signed provisioning code to a third entity. The third entity embeds the trust anchor in a second copy of the circuit and causes the circuit to: 1) generate the message signing private key; 2) verify the signature of the signed provisioning code using the code signing public key; and 3) launch the provisioning code on the circuit.