Invention Grant
- Patent Title: Secure provisioning in an untrusted environment
- Patent Title (中): 在不受信任的环境中进行安全配置
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Application No.: US14220507Application Date: 2014-03-20
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Publication No.: US09100174B2Publication Date: 2015-08-04
- Inventor: David H. Hartley , Thomas E. Tkacik , Carlin R. Covey , Lawrence L. Case , Rodney D. Ziolkowski
- Applicant: Freescale Semiconductor, Inc.
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Sherry W. Schumm
- Main IPC: H04L17/00
- IPC: H04L17/00 ; H04L9/08 ; H04L9/32

Abstract:
Embodiments include methods for securely provisioning copies of an electronic circuit. A first entity (e.g., a chip manufacturer) embeds one or more secret values into copies of the electronic circuit. A second entity (e.g., an OEM): 1) embeds a trust anchor in a first copy of the electronic circuit; 2) causes the electronic 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 (e.g., a product manufacturer). The third entity embeds the trust anchor in a second copy of the electronic circuit and causes the electronic 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 electronic circuit. The electronic circuit can authenticate itself to the OEM using the message signing key pair.
Public/Granted literature
- US20140205092A1 SECURE PROVISIONING IN AN UNTRUSTED ENVIRONMENT Public/Granted day:2014-07-24
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