Vehicle Connector Authentication for Aftermarket Device Safety
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Solution Overview
Problem
Aftermarket parts for vehicles often fail to meet the stringent safety standards set by original equipment manufacturers, particularly in high-risk systems where malfunctions can lead to hazardous conditions, necessitating a robust authentication system to ensure functional safety.
Innovation Solution
A security system for electronic devices connected to vehicles, featuring a security integrated circuit within a mating connector that authenticates devices and communicates with a host controller to manage authentication attempts, sending alerts or altering vehicle operation if authentication fails, thereby ensuring compliance with safety integrity levels like ASIL-D.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If aftermarket parts are used to replace original equipment, then cost is reduced and availability is improved, but safety integrity and reliability deteriorate due to failure to meet OEM standards
Solution Approach 1:
The security integrated circuit performs authentication of the electronic device before allowing connection to the vehicle system. This preliminary verification ensures that only authorized devices meeting safety standards can be installed, preventing unreliable aftermarket parts from compromising system integrity while still allowing cost-effective replacements.
Solution Approach 2:
The security integrated circuit acts as an intermediary between the host controller and the electronic device. It verifies the authenticity and safety compliance of the connected device through authentication protocols, ensuring that aftermarket parts meet required safety integrity levels before granting system access.
2Reliability
If authentication systems are implemented to verify device safety compliance, then reliability and safety integrity are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The security integrated circuit is integrated directly into the mating connector, combining the authentication function with the existing physical connection interface. This merging approach adds safety verification capability without requiring separate authentication hardware, thereby minimizing the increase in device complexity.
Solution Approach 2:
The security integrated circuit serves multiple functions: it authenticates the electronic device, verifies safety compliance, and enables or disables system operation based on authentication results. This multi-functionality consolidates several security-related operations into a single component, reducing overall system complexity.
3Reliability
If security authentication is performed for each electronic device connection, then safety integrity is improved, but operation time and system response time increase due to additional authentication steps
Solution Approach 1:
The security integrated circuit performs authentication during the device connection process itself, before the electronic device becomes operational. By completing the authentication check as a preliminary step during plugging in, the system ensures safety verification without adding separate authentication delays to the operational timeline.
Data Source
AI summary
A security system for an electronic device connected to a vehicle includes an electronic device. A first mating connector is one of integrated with the electronic device, and connected by conductors and the first mating connector to the electronic device. The first mating connector includes a security integrated circuit configured to perform authentication and a second mating connector. A host controller is connected by the second mating connector to the electronic device and the first mating connector to the security integrated circuit and the electronic device. The host controller is configured to communicate with the security integrated circuit to authenticate the electronic device.