Sensor Sentinel Computing Device for Industrial Data Authentication
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Solution Overview
Problem
In industrial environments, especially in uranium processing, there is a challenge in authenticating sensor data to prevent tampering and ensure compliance with international treaties, as conventional customized systems are costly and difficult to configure, and the rise of viruses like Stuxnet compromises the trust in programmable logic controllers.
Innovation Solution
A sensor sentinel computing device is introduced to receive time-series signals from sensors, generate validation signals through cryptographic functions or mathematical operations, and transmit these signals to a programmable logic controller and a database system for authentication, ensuring the integrity of sensor data by comparing validation signals and detecting any discrepancies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If customized authentication equipment is used to monitor sensor data, then data integrity and security are improved, but system cost and configuration complexity increase
Solution Approach 1:
A sensor sentinel computing device is introduced as an intermediary component between sensors and the monitoring system. This sentinel device receives sensor data, generates validation signals through cryptographic functions, and transmits both the sensor data and validation signals to the monitoring system. This intermediary approach maintains data integrity without requiring complex customization of the entire monitoring infrastructure.
Solution Approach 2:
The authentication function is segmented into a separate, dedicated sensor sentinel computing device rather than being integrated into the main monitoring system. This segmentation allows the sentinel device to handle authentication independently, simplifying the overall system configuration while maintaining security.
2Reliability
If customized authentication equipment is deployed across multiple facilities, then security is improved, but deployment cost and time increase
Solution Approach 1:
The sensor sentinel computing device is designed as a universal solution that can be deployed across multiple facilities with different sensors and monitoring requirements. The device implements standard cryptographic validation functions that work across diverse industrial environments, eliminating the need for custom authentication equipment at each facility and significantly reducing deployment time.
3Ease of manufacture
If operator equipment is trusted for monitoring, then cost is reduced, but vulnerability to viruses and tampering increases
Solution Approach 1:
The sensor sentinel computing device performs preliminary validation of sensor data through cryptographic functions before the data enters the operator's monitoring system. By pre-authenticating the data and attaching validation signals, the system prevents viral contamination and tampering from affecting the operator's equipment, while still utilizing the operator's existing monitoring infrastructure.
Data Source
AI summary
Technologies pertaining to authenticating data output by sensors in an industrial environment are described herein. A sensor sentinel computing device receives time-series data from a sensor by way of a wireline connection. The sensor sentinel computing device generates a validation signal that is a function of the time-series signal. The sensor sentinel computing device then transmits the validation signal to a programmable logic controller in the industrial environment.