Avionics Network Configuration Fingerprinting for Fast Validation
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Solution Overview
Problem
Existing avionics networks face challenges in reliably, safely, and simply checking the configurations of their components, which is crucial for monitoring changes and distinguishing between authorized and unauthorized modifications.
Innovation Solution
An avionics network with integrated configuration management, comprising a configuration monitoring device that receives configuration parameters, filters a subset, and compares them to reference values stored in a memory, allowing for dynamic and prompt determination of the network's configuration status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all configuration parameters are monitored and checked, then the reliability and completeness of configuration validation is improved, but the device complexity and computational burden increase significantly
Solution Approach 1:
The configuration parameter set is segmented into two distinct groups: fingerprint parameters (critical for identification and validation) and non-fingerprint parameters (less critical). This segmentation allows the system to focus monitoring resources on the most important parameters while reducing overall system complexity. The parameter filter device implements this segmentation by selectively passing only fingerprint parameters to the comparison device.
Solution Approach 2:
The invention extracts and isolates the essential fingerprint parameters from the complete configuration parameter set. By using a parameter filter device that identifies and extracts only the fingerprint-relevant parameters, the system achieves reliable configuration validation without the burden of processing all parameters. This extraction principle directly reduces computational complexity while maintaining validation reliability.
2Reliability
If a comprehensive configuration checking scheme is implemented, then the ability to detect unauthorized modifications is improved, but the processing time and resource consumption increase
Solution Approach 1:
The parameter filter device extracts only the essential fingerprint parameters from the complete configuration set, eliminating unnecessary processing of non-critical parameters. This extraction enables the system to maintain high detection capability for unauthorized modifications while significantly reducing the time required to perform configuration checks.
Solution Approach 2:
Instead of performing exhaustive checking of all configuration parameters, the system applies partial action by monitoring only the fingerprint parameters that are sufficient for detecting unauthorized modifications. This partial monitoring approach reduces processing time and resource consumption while maintaining adequate detection capability.
3Loss of information
If the configuration monitoring device processes all received parameters, then the completeness of configuration analysis is improved, but the productivity and speed of configuration determination decrease
Solution Approach 1:
The parameter filter device extracts and passes only the fingerprint parameters to the comparison device, eliminating the need to process non-essential parameters. This extraction mechanism maintains the completeness of critical configuration information while dramatically improving the speed of configuration determination and validation.
Solution Approach 2:
The configuration parameters are segmented into fingerprint and non-fingerprint categories, with only the fingerprint segment being processed by the comparison device. This segmentation enables the system to maintain information completeness for critical parameters while improving processing speed by excluding non-essential parameters from the analysis pipeline.
Data Source
AI summary
An avionics network including a plurality of avionics components and a configuration monitoring device, which is connected by wire or wirelessly to the plurality of avionics components. The configuration monitoring device has at least one configuration data interface configured to receive a plurality of configuration parameters characterizing the operating status of the avionics components. The configuration monitoring device further includes a parameter filtering device connected to the configuration data interface and configured to filter a subset of the configuration parameters received. The configuration monitoring device additionally includes reference parameter storage, configured to store sets of reference values for configuration parameters, and a parameter comparison device, coupled to the reference parameter storage and the parameter filtering device, and configured to compare the subset of configuration parameters received and filtered by the parameter filtering device with a set of reference values for the configuration parameters stored in the reference parameter storage.