Data Hub Cross-Domain Security Real-Time Transfer
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Solution Overview
Problem
Existing cross-domain communication systems face challenges in securely transferring data between domains with different security classifications, particularly when connected via an unsecured internet connection, leading to limitations in data transfer and compromised simulation functionality.
Innovation Solution
A data hub is introduced to connect domains with different security classifications, equipped with processors that inspect packet data and apply user-defined rules to filter and obfuscate data, allowing secure, real-time communication without compromising security classifications, using processor-diode pairs for bidirectional data flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data diodes are used to prevent data compromise between domains of different security classifications, then security is improved, but data transfer functionality is restricted and simulation realism is compromised
Solution Approach 1:
The patent introduces a data hub as an intermediary device between domains of different security classifications. The data hub receives data from high-security domains, applies security policies and filtering rules, and forwards approved data to low-security domains. This mediator approach enables bidirectional data flow while maintaining security boundaries, resolving the contradiction between security and data transfer functionality.
Solution Approach 2:
The patent changes the security parameters of data packets by applying security policies that modify data attributes during transmission. The data hub inspects packet data and transforms it according to security classification rules, allowing data to be transmitted with appropriate security clearances. This parameter transformation enables data flow across security boundaries while maintaining security integrity.
2Ease of operation
If security classifications are raised or lowered to be the same across all domains, then data transfer is simplified, but security classification integrity is compromised
Solution Approach 1:
The patent segments the security management function into a centralized data hub that handles security policy enforcement separately from the individual domains. Each domain maintains its own security classification integrity, while the data hub provides a unified interface for cross-domain data transfer. This segmentation allows domains to operate independently with their own security classifications while enabling controlled data exchange.
3Reliability
If data transfer is restricted to one-way flow from lower to higher security classifications, then security is maintained, but simulation functionality is limited
Solution Approach 1:
The patent implements dynamic security policy enforcement where the data hub can adjust data flow permissions based on real-time security requirements and simulation needs. Security policies are not static but can be modified to allow bidirectional data flow when appropriate, enabling flexible simulation scenarios while maintaining security. This dynamic approach resolves the contradiction between security and simulation functionality.
Data Source
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Figure 2
AI summary
A cross-domain communication system and method is provided. The system comprises a data hub connectable to first domain and to a second domain, wherein the first and second domains are isolated from one another. The data hub may be connected independently to the first domain and to the second domain, such that it is able to receive data from the first domain and transmit data to the second domain. The data hub comprises a processor, and optionally a data diode, the processor being adapted to inspect packet data received from the first domain, and to run a set of user-defined rules, such that commands are applied to the packet data in accordance with the rules. When a command applied to packet data received from the first domain it creates packet data transmittable to the second domain in real time, such that the first and second domains communicate indirectly via the data hub.