Chiplet Supply Chain Security via Encrypted Test Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process for integrated circuits, which involves assembling independently manufactured chiplets, faces challenges in ensuring supply chain security due to susceptibility to security attacks and the potential for counterfeit chiplets during transport between manufacturing and assembly facilities.
Innovation Solution
A system is implemented where a chiplet manufacturing interface tests each chiplet, records the test results securely, and encrypts them using a public-private key pair. These encrypted test results are stored in a shared database accessible by the chiplet integration interface, which decrypts and compares them with its own test results to verify the chiplet's trustworthiness before integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If chiplets are manufactured separately and transported between facilities, then manufacturing flexibility and cost efficiency are improved, but supply chain security and susceptibility to counterfeit chiplets worsen
Solution Approach 1:
The system performs preliminary testing of chiplets at the manufacturing facility and securely stores test results before transport. The chiplet integration interface retrieves and verifies these pre-stored test results before integration, ensuring supply chain security without disrupting the separate manufacturing process
Solution Approach 2:
A shared database serves as an intermediary between the chiplet manufacturing interface and chiplet integration interface. This database securely stores encrypted test results, enabling verification of chiplet authenticity during transport without requiring direct physical connection between facilities
2Reliability
If chiplet test results are stored securely with encryption, then supply chain security is improved, but system complexity and data management requirements worsen
Solution Approach 1:
The shared database serves multiple functions: storing test results, encrypting data for security, and enabling retrieval by both manufacturing and integration interfaces. This multi-functionality reduces overall system complexity by consolidating multiple components into a single versatile system
Solution Approach 2:
The chiplet integration interface retrieves encrypted test results from the database, decrypts them, and uses the verification feedback to determine whether to proceed with integration. This feedback mechanism ensures security while maintaining a straightforward integration process
Data Source
AI summary
Supply chain security for chiplets is described. In accordance with the described techniques, a chiplet manufacturing interface obtains first test results, and stores an encrypted version of the first test results in a database accessible by the chiplet manufacturing interface and a chiplet integration interface. The chiplet integration interface obtains second test results from at least one chiplet, retrieves, from the database, the encrypted version of the first test results, decrypts the encrypted version of the first test results to obtain a first hash of the first test results, and selectively integrates the at least one chiplet into an integrated circuit based on a comparison of the first test results and the second test results and a comparison of the first hash and a second hash of the second test results generated by the chiplet integration interface.