Scan-Based IC Fingerprinting for Counterfeit Chip Authentication
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Solution Overview
Problem
The challenge of differentiating between authentic and counterfeit integrated circuits (ICs) is exacerbated by sophisticated multi-die packaging technologies, making it difficult to verify the authenticity and integrity of semiconductor components within complex supply chains.
Innovation Solution
Generating scan-based feature identifiers through physical inspection modalities that leverage intrinsic manufacturing-induced variations and defects in ICs, without requiring additional circuitry, to create unique digital signatures that are resistant to tampering and replication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sophisticated multi-die packaging technologies are used, then device functionality and integration are improved, but the difficulty of detecting and measuring authenticity worsens
Solution Approach 1:
The patent applies preliminary action by embedding unique identifying features and digital signatures into the IC during the manufacturing process itself, before the product enters the supply chain. This ensures authenticity markers are present from the outset, making verification possible without adding complexity to the multi-die packaging structure.
Solution Approach 2:
The IC structure itself serves as the authentication mechanism by utilizing inherent manufacturing variations and physical characteristics as unique identifiers. The device's own fabrication imperfections and material properties become the authentication keys, eliminating the need for separate verification components.
2Reliability
If traditional authentication methods are used, then security is improved, but device complexity and cost increase
Solution Approach 1:
The authentication system uses the IC's inherent physical characteristics and manufacturing variations as unique identifiers, eliminating the need for external key management infrastructure. Each device authenticates itself through its own unique physical fingerprint rather than relying on stored cryptographic keys.
Solution Approach 2:
The patent replaces mechanical/electronic key management systems with a physics-based authentication approach. Instead of using cryptographic keys and secure storage hardware, the system uses measurable physical properties and manufacturing variations that naturally exist in each IC.
3Reliability
If extensive prevention measures are implemented across the supply chain, then counterfeit detection capability is improved, but implementation difficulty and cost increase
Solution Approach 1:
Authentication markers are embedded during manufacturing, enabling verification at any point in the supply chain without requiring extensive infrastructure setup. The preliminary embedding of unique identifiers simplifies downstream detection efforts.
Solution Approach 2:
The authentication system is designed to be universally applicable across different IC types and supply chain stages. The same physical characteristic-based identification method works for various packaging technologies and can be implemented at manufacturing, distribution, or end-user levels.
Data Source
AI summary
A method and system are directed to determining one or more inspection modalities for inspecting a hardware device; receiving measurement data that is associated with the performance of one or more inspections on the hardware device based on the one or more inspection modalities; determining one or more distinguishing features based on the measurement data, wherein the one or more distinguishing features correspond to one or more hardware components of the hardware device; and generating a scan-based feature identifier for the hardware device based on the one or more distinguishing features.