Multicore Processor Inter-Core Communication Anomaly Detection
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Solution Overview
Problem
Existing communication channel monitoring systems in multicore processors or microcontrollers within vehicles lack effective mechanisms to detect anomalies, which can lead to security breaches and system failures.
Innovation Solution
A method is introduced to monitor communication between multiple cores within a multicore processor or microcontroller, where anomalies are detected based on predefined rules and criteria, such as frame tampering, data integrity checks, and authentication validation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication monitoring is implemented between cores in multicore processors, then security and reliability are improved, but device complexity increases
Solution Approach 1:
A dedicated monitoring core is introduced as an intermediary component that observes and analyzes communication between other cores without interfering with their normal operation. This monitoring core acts as a mediator that detects anomalies in inter-processor communication while maintaining the functional independence of the monitored cores, thus improving security without requiring modification of the core communication protocol
Solution Approach 2:
The monitoring system utilizes the existing communication infrastructure and resources within the multicore processor to perform self-diagnosis and anomaly detection. The monitoring core leverages the same communication channels and data formats already present in the system, eliminating the need for separate dedicated monitoring infrastructure and reducing overall system complexity
2Reliability
If anomaly detection mechanisms are added to communication channels, then security against breaches is improved, but processing time and system performance deteriorate
Solution Approach 1:
The monitoring system applies partial monitoring by focusing only on specific anomaly patterns and communication characteristics that are most relevant to security threats. Rather than analyzing every single communication parameter in detail, the system monitors for predefined anomaly signatures and suspicious patterns, enabling security detection with minimal impact on communication throughput
Solution Approach 2:
Anomaly detection rules and thresholds are pre-configured and established before runtime operations. The monitoring core has predefined criteria for identifying security threats, allowing it to make rapid decisions about anomalous communication without requiring complex real-time analysis, thus minimizing processing delays
Data Source
AI summary
A method for determining whether in a communication channel within at least one multicore processor or multicore microcontroller, particularly within a vehicle, an anomaly is present. The at least one multicore processor or multicore microcontroller includes a plurality of cores. A communication between at least two of the plurality of cores is monitored, and based on a monitoring result, it is decided whether the anomaly is present or not.