Distributed Ledger Control Records for Tamper-Resistant Plant Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Process control systems in industrial plants face vulnerabilities to cyber intrusions, which can lead to equipment damage, product loss, and even human safety risks due to the lack of secure and immutable data recording and transaction verification.
Innovation Solution
The implementation of a distributed ledger system, such as a blockchain, within process control systems to record transactions and execute smart contracts, providing a secure, immutable, and trustless record of process and product parameters, regulatory data, and enabling secure automation of transactions without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If centralized databases and communication systems are used in process control, then data access and system operation are simplified, but security vulnerabilities and data integrity risks increase
Solution Approach 1:
The patent segments the centralized database into a distributed ledger network where data is replicated across multiple nodes. Each node maintains a copy of the ledger, eliminating the single point of failure inherent in centralized systems. This segmentation allows data to be accessed through multiple pathways while ensuring integrity through cryptographic verification at each node.
Solution Approach 2:
The patent introduces cryptographic hash functions and consensus mechanisms as intermediaries between data writers and readers. These intermediaries verify data integrity without requiring trust in any single participant, enabling secure data access in the distributed system while maintaining simplicity for end users.
2Device complexity
If traditional process control systems are used, then system complexity is low, but susceptibility to cyber intrusions and data tampering increases
Solution Approach 1:
The patent applies preliminary cryptographic hashing to all data before it enters the distributed ledger. This preliminary action creates immutable data fingerprints that prevent tampering. The consensus mechanism is also established in advance, creating pre-configured security protocols that automatically detect and reject malicious intrusions without requiring complex real-time analysis.
Solution Approach 2:
The patent converts the potential harm of increased system complexity into a benefit by using the complexity of cryptographic operations to create security. The computational overhead of hash verification and consensus reaching, while increasing complexity, directly transforms into enhanced protection against cyber intrusions and data tampering.
3Reliability
If distributed ledger technology is implemented, then data security and immutability are enhanced, but system complexity and computational requirements increase
Solution Approach 1:
The patent uses cryptographic copying where each node creates and maintains identical copies of the ledger through hashing. Rather than managing complex distributed state, the system replicates simplified data structures that are easy to verify. This copying approach maintains security while keeping individual node complexity manageable through standardized protocols.
4Extent of automation
If manual verification of process data is used, then system automation level is low, but trust and verification reliability are higher
Solution Approach 1:
The patent implements automated feedback loops where the distributed ledger continuously verifies transactions through cryptographic consensus. Each successful transaction provides feedback to all nodes, confirming its validity. This automated feedback system replaces manual verification while maintaining or exceeding trust levels through mathematical proof rather than human judgment.
Solution Approach 2:
The system enables self-service verification where any participant can independently validate transactions using publicly available cryptographic data. This eliminates the need for centralized trusted authorities or manual verification, allowing the system to self-verify through distributed consensus while maintaining high trust through transparent, auditable processes.
Data Source
AI summary
To provide a trusted, secure, and immutable record of transactions within a process plant, techniques are described for utilizing a distributed ledger in process control systems. The distributed ledger may be maintained by nodes which receive transactions broadcasted from field devices, controllers, operator workstations, or other devices operating within the process plant. The transactions may include process plant data, such as process parameter data, product parameter data, configuration data, user interaction data, maintenance data, commissioning data, plant network data, and product tracking data. The distributed ledgers may also be utilized to execute smart contracts to allow machines such as field devices to transact by themselves without human intervention. In this manner, recorded process parameter values and product parameter values may be retrieved to verify the quality of products. Moreover, regulatory data may be recorded in response to triggering events so that regulatory agencies can review the data.