Measuring System Compatibility Verification via Signature Matching
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Solution Overview
Problem
Ensuring compatibility and preventing unauthorized use of measuring systems consisting of transducers and sensors, particularly in process automation technology, where digital communication is prevalent, and distinguishing between original and licensed components.
Innovation Solution
Implementing a method that uses characteristic data records and signatures stored in both the transmitter and sensor, with a signing algorithm to verify compatibility, including an authorization code for access rights, and employing one-way functions for security, ensuring only original or licensed components work together seamlessly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a measuring system uses digital communication between sensor and transmitter, then data processing and communication efficiency are improved, but security risks increase due to potential unauthorized access and compatibility issues with third-party components
Solution Approach 1:
The patent applies preliminary anti-action by implementing signature verification before any data processing or communication occurs. The transmitter and sensor exchange signatures and verify compatibility in advance, preventing unauthorized components from accessing the system. This pre-verification mechanism blocks potential security threats before they can exploit the digital communication channel.
Solution Approach 2:
The patent introduces signatures as an intermediary element that mediates between the transmitter and sensor. These signatures act as a trust intermediary, allowing the system to verify component authenticity without exposing sensitive data or creating direct security vulnerabilities. The signature verification process serves as a secure intermediary check that enables productive communication only between authorized components.
2Reliability
If the system implements signature verification to prevent unauthorized components, then system security is improved, but device complexity increases due to additional verification steps and data exchange protocols
Solution Approach 1:
The patent applies preliminary action by generating and storing signatures during the manufacturing or initialization phase, before the measuring system becomes operational. This pre-preparation of authentication data eliminates the need for complex real-time signature generation during operation. The signatures are created in advance and simply verified during component pairing, significantly reducing operational complexity while maintaining security.
Solution Approach 2:
The patent segments the authentication process into distinct, manageable steps: signature generation, signature storage, signature exchange, and signature verification. By dividing the complex authentication task into these discrete segments, each with a specific function, the system makes the verification protocol more manageable and easier to implement without overwhelming complexity.
3Adaptability or versatility
If the system allows licensed components to be rebuilt under license, then manufacturing flexibility is improved, but compatibility assurance becomes more difficult as multiple manufacturers produce components
Solution Approach 1:
The patent applies universality by creating a universal signature verification standard that works across all licensed manufacturers. The same signature generation and verification mechanism is used regardless of which licensed manufacturer produces the transmitter or sensor. This universal approach allows multiple manufacturers to produce compatible components while maintaining consistent authentication, resolving the contradiction between manufacturing flexibility and compatibility assurance.
Data Source
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AI summary
In a method for checking the compatibility of a measurement system comprising a measuring transducer MU and a sensor S, a first signature S1 is externally created for a characteristic data record KDS which is stored in the measuring transducer MU. After the characteristic data record KDS has been transmitted from the measuring transducer MU to the sensor S, a second signature S1´ is calculated for the characteristic data record KDS in the sensor S. If the signatures S1 und S1´ match, the measuring transducer MU and the sensor S are compatible and the measuring transducer MU can access data and/or functions of the sensor S.