Blockchain-Based Field Device Authenticity Verification
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Solution Overview
Problem
Existing methods fail to reliably detect and prevent unauthorized manipulations of field devices in automation technology, which can lead to production failures, damage, and safety risks due to counterfeit parts or faulty firmware.
Innovation Solution
A method utilizing decentralized ledger or blockchain technology to associate a unique authentic identification feature with field devices, allowing for non-invasive verification through distributed participant nodes, ensuring the authenticity of field devices by comparing actual identification data with target data stored in decentralized databases, and using cryptocurrency for secure transactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If decentralized ledger or blockchain technology is used to verify field device authenticity, then security against unauthorized manipulations is improved, but device complexity increases
Solution Approach 1:
The patent introduces a decentralized ledger or blockchain as an intermediary system that mediates between field devices and verification entities. This intermediary maintains a distributed database of authentic identification features, allowing verification without direct trust relationships between devices. The blockchain acts as a neutral mediator that records and verifies authenticity data across multiple participant nodes, resolving the contradiction by providing enhanced security through decentralization while managing complexity through standardized protocols.
Solution Approach 2:
The verification system is segmented into independent participant nodes that each maintain copies of the distributed database. Rather than a single centralized authority, the system divides verification functionality across multiple nodes, each capable of independently verifying field device authenticity. This segmentation improves reliability through redundancy and fault tolerance while the modular node architecture helps manage overall system complexity.
2Reliability
If a unique authentic identification feature is associated with each field device, then manipulation detection is improved, but manufacturing complexity increases
Solution Approach 1:
The unique authentic identification feature is associated with the field device during the manufacturing process, before the device reaches the customer. This preliminary action embeds the security feature at the point of creation, making subsequent manipulation detection possible without adding complexity to later operations. The identification feature is established once during manufacturing and then used repeatedly for verification.
Solution Approach 2:
The system uses identification features that can be represented as data copies stored in the decentralized ledger. Rather than requiring complex physical security features, the patent employs identifiable characteristics that can be digitally replicated and stored across the distributed database. This copying approach simplifies manufacturing while enabling reliable manipulation detection through comparison of actual versus stored identification data.
3Stability of the object's composition
If non-invasive identification methods are used to determine authentic features, then device integrity is preserved, but measurement precision may be reduced
Solution Approach 1:
The patent replaces invasive physical inspection methods with non-invasive identification techniques such as optical scanning, RFID reading, or other remote sensing methods. These electronic or optical systems substitute for mechanical disassembly or physical contact, preserving device integrity while maintaining sufficient identification precision through advanced sensing and pattern recognition algorithms.
Data Source
AI summary
The present disclosure relates to a method for ensuring the authenticity of a field device. The method includes a step of assigning a unique authentic identification feature to the field device or providing the field device with a unique authentic identification feature. The method also includes steps of transmitting ACTUAL identification data to a participant node which transmits the ACTUAL identification data to the other participant nodes in a transaction, validating the transaction by the participant nodes, and creating a data block containing the transaction, wherein the data block is transmitted to each of the participant nodes. The method also includes verifying the data block by all participant nodes, storing the validated data block in the databases, comparing the ACTUAL identification data with corresponding TARGET identification data or original identification data from an authentication point, and generating a response containing the result of the comparison.