Dynamic Component Verification via Challenge-Response Authentication
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Solution Overview
Problem
Existing methods for detecting unauthorized component exchanges in technical systems, such as transport devices, are inadequate in preventing malicious substitutions, particularly in tax-privileged systems with environmentally friendly components, as they can be easily replicated or tampered with.
Innovation Solution
A method involving a control unit that sends encoded messages with randomly generated or difficult-to-reproduce values to components, which access an assignment field to generate and return an identification, allowing the control unit to verify the component's authenticity through a matrix-based identification system, using sensor signals and mathematical algorithms to ensure secure authorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple identification system is used for component verification, then the ease of operation is improved, but the reliability of detecting unauthorized exchanges deteriorates
Solution Approach 1:
The system changes the parameter of the identification value from static to dynamic by introducing randomly generated challenge values. The component must respond with identifications that are mathematically derived from these changing challenges, making each verification exchange unique and preventing simple copying of identification sequences.
Solution Approach 2:
A mathematical algorithm acts as an intermediary between the control unit and component. The algorithm processes the random challenge value and the secret stored in the component to generate the identification response, creating a secure verification mechanism that neither party can replicate without the other's elements.
2Reliability
If a secure identification system with random values is implemented, then the reliability of detecting unauthorized exchanges is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex physical security mechanisms with a mathematical verification system. Instead of using hardware locks or physical tags, the system uses cryptographic algorithms and random number generation to achieve secure verification, reducing mechanical complexity while maintaining or improving security reliability.
Solution Approach 2:
The verification system is designed to be universally applicable to different components and control units. The same mathematical algorithm and protocol can verify any component, eliminating the need for component-specific verification hardware and reducing overall system complexity through standardization.
3Ease of manufacture
If static identification values are used in components, then the ease of manufacture is improved, but the difficulty of detecting and measuring unauthorized exchanges worsens
Solution Approach 1:
The identification system transitions from static values to dynamic values that change with each verification attempt. The component receives a random challenge value and generates a dynamic identification response based on this challenge and its internal secret, making each verification exchange unique and preventing detection bypass through static analysis.
Solution Approach 2:
The control unit generates and transmits a random challenge value before the actual verification occurs. This preliminary action ensures that the identification response cannot be predetermined or copied, as it depends on the unpredictable challenge value that is established just before verification.
Data Source
AI summary
Method of detecting an unauthorized exchange of components in the case of a technical system, where the control unit (1) sends an encoded message (3) to a component (2) to be checked, in a data field of the message (3) a randomly generated or not easily reproducible value (5, 6) being entered, which is used for checking the installed component (2). The component (2) accesses an assignment field (8) and, as a result, assigns an identification (9) to each not easily reproducible or random value (5, 6) transmitted together with the message (3), and the component (2) transmits the identification corresponding to the value (5, 6) back to the control unit (1). The control unit (1) decides on the basis of the identification (9) whether the component (2) is that the component (2) which is authorized for use in the particular technical system.