Secure Data Communication via Unidirectional Datagram Isolation
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Solution Overview
Problem
Remote monitoring of critical assets in infrastructure, such as power plants, faces challenges in maintaining data security over network connections, requiring effective methods to protect sensitive information from malicious entities.
Innovation Solution
A system and method for two-way secure data communication between servers within a critical infrastructure, involving decryption, verification, and encryption of data using unique datagrams transmitted via unidirectional serial links, with retransmission requests when data is not verified, ensuring secure data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If data is transmitted over network connections for remote monitoring, then remote access capability is improved, but data security deteriorates
Solution Approach 1:
The system segments data transmission into unidirectional datagram flows between isolated network zones. Each datagram is a discrete, verified data unit that travels through physically separated communication channels, preventing lateral movement of threats while maintaining monitoring capabilities across the infrastructure.
Solution Approach 2:
The patent introduces intermediary components including datagram verification mechanisms, encryption layers, and protocol translation services that mediate between the remote monitoring requirements and security constraints. These intermediaries verify data integrity, encrypt sensitive information, and control the flow of data between isolated network segments.
2Object-affected harmful factors
If encryption and verification processes are implemented, then data security is improved, but processing time deteriorates
Solution Approach 1:
The system performs preliminary actions by pre-establishing encryption keys, pre- verifying data formats, and pre-configuring communication protocols before actual data transmission occurs. Configuration information and security parameters are set in advance, reducing the computational overhead during time-critical data exchange operations.
Solution Approach 2:
The patent employs parameter changes by dynamically adjusting encryption algorithms, datagram size limits, and verification strictness based on the criticality and type of data being transmitted. Less sensitive data may use lighter verification, while critical infrastructure data receives enhanced protection, optimizing the balance between security and processing speed.
3Reliability
If unidirectional serial links are used for data transmission, then data integrity is improved, but communication flexibility deteriorates
Solution Approach 1:
The system compensates for the unidirectional limitation by implementing multi-dimensional communication strategies: multiple unidirectional links operate in parallel between different network zones, and the protocol layer provides bidirectional control through carefully orchestrated request-response sequences. This maintains data integrity while achieving functional flexibility.
Data Source
AI summary
Systems and methods for two-way, secure, data communication within critical infrastructures are usable to protect critical infrastructure information while allowing real-time monitoring and remote access. Such communication systems and methods can be used to protect critical data by, for example, providing a single point of access via unidirectional, serial, non-routable connections. Additionally, data flow may be controlled by a first server that is not accessible outside of the critical infrastructure.