Integrated Circuit Authentication via PUF Enrollment
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Solution Overview
Problem
The integrated circuit supply chain faces vulnerabilities such as unauthorized alteration, counterfeiting, and distribution channel piracy due to lack of direct control over manufacturing and distribution, relying on trust with third-party fabricators and distributors.
Innovation Solution
Implementing a security protocol that enrolls integrated circuits with a security server using security circuitry to generate and authenticate a unique fingerprint code, ensuring the chip's authenticity through a challenge-response mechanism over a network, utilizing physical uncloneable function (PUF) circuitry and cryptography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical indicia (DNA paint, holographic stickers, laser etching) are used to mark chips, then distribution channel piracy can be combated, but manufacturing complexity and cost increase
Solution Approach 1:
The patent replaces physical mechanical marking systems (DNA paint, holographic stickers, laser etching) with an electronic authentication system using PUF circuitry. The PUF generates unique digital fingerprints that are enrolled with a security server, substituting physical marking mechanisms with cryptographic authentication protocols.
Solution Approach 2:
The patent introduces a security server as an intermediary between the chip manufacturer and distributors. This server stores enrollment information and performs authentication by challenging chips and verifying their responses, eliminating the need for complex physical marking systems while providing reliable authentication.
2Productivity
If third-party fabricators are used for manufacturing, then production scalability is improved, but manufacturing-related vulnerabilities increase
Solution Approach 1:
The patent replaces trust-based manual verification processes with automated electronic authentication using PUF circuitry. The unique digital fingerprints generated by PUF and enrolled with the security server provide cryptographic proof of authenticity, enabling third-party fabricators to be used without compromising security.
Solution Approach 2:
The PUF circuitry automatically generates unique authentication credentials during manufacturing that are enrolled with the security server. This self-enrollment capability eliminates the need for manual security procedures at fabrication facilities while maintaining production scalability.
3Reliability
If physical presence is maintained at manufacturing facilities for security, then manufacturing vulnerabilities are reduced, but operational cost and complexity increase
Solution Approach 1:
The patent replaces physical security measures (personnel presence, facility monitoring) with electronic authentication protocols. The PUF-based challenge-response mechanism provides automated verification that eliminates the need for continuous physical oversight at manufacturing facilities.
Solution Approach 2:
The security server acts as an intermediary that performs authentication remotely, replacing the need for physical presence at manufacturing facilities. The server challenges chips and verifies responses electronically, providing security oversight without requiring personnel stationed at fabrication sites.
Data Source
AI summary
This application discloses a supply chain security technique that enrolls an integrated circuit with a security server and subsequently utilizes the enrollment to authenticate the integrated circuit. The integrated circuit can include security circuitry to enroll the integrated circuit with the security server by generating an enrollment message—including a fingerprint code having an encoded version of a private value generated by the security circuitry—for transmission to the security server. The security circuitry can authenticate the integrated circuit by replying to a request to verify authentication of the integrated circuit from the security server. The response can confirm to the security server that the integrated circuit includes the private value, which can authenticate the integrated circuit.