Identification Circuit Verification via Cryptographic Key Matching
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Solution Overview
Problem
The increasing difficulty in distinguishing genuine components from counterfeit ones, especially with sophisticated counterfeits that mimic high-quality products, and the limitations of existing identification methods such as bar codes which can be easily replicated.
Innovation Solution
A method involving an identification circuit integrated into components using non-conducting, semiconducting, and conducting materials to form an electronic circuit configuration that processes input keys through defined mathematical functions, generating output keys for verification, with the circuit being either single-plane or three-dimensional, and potentially integrated within the component or on a tag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If bar codes or security labels are used for identification, then the identification method is simple and easy to implement, but these can be reproduced with little effort and expense, reducing security
Solution Approach 1:
The patent replaces simple visual identification methods (bar codes, security labels) with an electronic identification circuit that performs cryptographic operations. The mechanical/optical system of reading bar codes is substituted with an electronic system that processes input signals through defined mathematical functions embedded in the circuit, making replication significantly more difficult while maintaining verification simplicity.
Solution Approach 2:
The patent changes the identification parameter from static visual patterns (bar codes) to dynamic cryptographic responses. The identification circuit takes an input signal, processes it through mathematical functions with specific parameters (resistors, capacitors, transistors with defined values), and generates an output signal that is computationally difficult to replicate without knowing the exact circuit parameters.
2Reliability
If three-dimensional logic circuits are used, then the structure becomes hard or impossible to replicate, but the complexity of the identification system increases
Solution Approach 1:
The patent extracts the essential cryptographic function from a complex three-dimensional logic circuit and implements it using a simplified two-dimensional electronic circuit. By taking out only the necessary mathematical processing capability and implementing it with standard electronic components arranged in a specific configuration, the patent achieves replication resistance without requiring complex 3D structures.
Solution Approach 2:
The patent uses a simplified circuit configuration that copies the essential cryptographic functionality of complex 3D circuits without replicating their physical complexity. The defined mathematical function is implemented using standard electronic components in a two-dimensional layout, making the system easier to manufacture while maintaining security against replication.
3Reliability
If an electronic circuit configuration with defined mathematical functions is used, then the identification becomes more secure against counterfeiting, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the identification circuit into distinct functional blocks: input signal reception, mathematical processing (with defined resistor, capacitor, transistor values), and output signal generation. This segmentation allows each block to be manufactured and tested independently, then assembled into the complete identification circuit, reducing overall manufacturing complexity while maintaining security.
Solution Approach 2:
The patent uses universal electronic components (resistors, capacitors, transistors) that can be manufactured using standard processes. By implementing the cryptographic function using these common components with specifically defined parameter values rather than specialized components, the patent maintains security while improving ease of manufacture through compatibility with existing manufacturing infrastructure.
Data Source
AI summary
The invention relates to a method for verifying an identification circuit (5) integrated in a component to be identified, having the following steps: a) entering a primary key in the identification circuit (5), b.) reading a secondary key output by the identification circuit (5) in reaction to the input of the primary key, c.) providing a control key associated with the primary key, d.) comparing the control key to the output secondary key, e.) providing a result of the comparison step, wherein in case of a match of the secondary key to the control key, the component having the identification circuit is identified as an original component, and in the opposite case, as a counterfeit component, and wherein the identification circuit (5) comprises non-conducting, semiconducting, and conducting materials disposed and connected to each other such that at least one electronic circuit configuration is formed, comprising at least one defined mathematical function and configured for determining the secondary key from the primary key inputted into the identification circuit (5), and providing said secondary key for readout, at least using the at least one mathematical function.