Machine Tool Production Data Protection Against Control Data Leakage
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Solution Overview
Problem
Existing methods for protecting control information in machine tool manufacturing, such as encryption, may not effectively prevent unauthorized access or copying of production data, which can lead to misuse of the control information for other machine tools.
Innovation Solution
A method and machine tool design that generate production data during manufacturing, provide protection information to specify which data to protect and how, and apply defined protection methods, including cryptographic encryption, to secure sensitive production data, ensuring only authorized devices can access or decrypt the data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is protected using encryption methods, then copying protection is improved, but production data can still be derived during manufacturing revealing control information
Solution Approach 1:
The patent applies preliminary action by destroying or anonymizing production data immediately after they are generated during the manufacturing process. This prevents any subsequent derivation of control information from the production data, addressing the vulnerability where encrypted control information could still be reverse-engineered from manufacturing logs and sensor data.
Solution Approach 2:
The patent extracts and separately handles sensitive production data that could reveal control information. By identifying and isolating this data for immediate destruction or anonymization, the system prevents the reconstruction of control information from production data, complementing the encryption of control information itself.
2Reliability
If all production data are protected, then security is improved, but data processing complexity and storage requirements increase
Solution Approach 1:
The patent applies local quality by differentiating between types of production data and applying protection measures selectively. Instead of uniformly protecting all production data, the system identifies specific data categories that could reveal control information and applies destruction or anonymization only to those, reducing overall system complexity while maintaining security.
Solution Approach 2:
The patent segments production data into categories based on their sensitivity and potential to reveal control information. This segmentation allows the system to apply different protection strategies (destruction, anonymization, or retention) to different data segments, simplifying the protection architecture compared to treating all data uniformly.
3Reliability
If production data are destroyed or anonymized, then control information security is improved, but data availability for analysis and quality control decreases
Solution Approach 1:
The patent applies preliminary action by destroying or anonymizing production data immediately after they serve their primary purpose in the manufacturing process. This timing ensures that control information security is maintained while minimizing the impact on analysis and quality control, as data are processed and utilized before destruction.
Solution Approach 2:
The patent extracts and preserves only the essential production data needed for analysis and quality control, while destroying or anonymizing the remaining data that could reveal control information. This selective extraction maintains data availability for legitimate purposes while protecting control information confidentiality.
Data Source
AI summary
Provided is a method for producing a product by a machine tool, wherein the control information and/or production data of a machine tool, such as a milling machine, injection molding machine, welding robot, laser cutter or 3D printer, is protected or cryptographically encrypted such that unauthorized copying or modifying is prevented, including the steps: producing product by the machine tool taking into consideration control information which controls the production of the product; generating production data by the machine tool during production of the product, wherein the production data describes the production of the product; providing protection information to the machine tool, which indicates which of the production data is to be protected, and defines a protection method for the production data which is protected; and protecting that production data which, according to the protection information, is to be protected, by the protection method defined by the protection information.