Vehicle Authorization Token Deactivation via Telemetry
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Solution Overview
Problem
Existing vehicle authorization systems fail to securely manage changes in ownership or authorized users, leading to potential risks of unauthorized access and malicious attacks, especially during vehicle sales or sharing arrangements, as old tokens can remain active without user interaction.
Innovation Solution
A system that utilizes telemetry data from vehicles to detect potential changes in ownership or authorized users, sending an authorization confirmation request and deauthorizing tokens if no affirmative response is received within a predefined time period, ensuring only authorized users can access and control the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If tokens are maintained active for extended periods to allow user access, then ease of operation is improved, but security is worsened as old tokens can remain active after ownership changes
Solution Approach 1:
The system performs preliminary actions by establishing a monitoring mechanism that proactively detects potential ownership changes through telemetry data analysis before unauthorized access can occur. The authorization server continuously watches for indicators of ownership change and prepares to revoke tokens preemptively, rather than waiting for security incidents to manifest
Solution Approach 2:
The system implements feedback loops where telemetry data from the vehicle is continuously sent to the authorization server, which analyzes this data for patterns indicating ownership changes. When such patterns are detected, the server sends confirmation requests to the vehicle, and based on the response, dynamically adjusts token validity. This closed-loop feedback mechanism allows the system to adapt token lifecycle management to actual usage patterns and ownership status
2Reliability
If the system continuously monitors telemetry data to detect ownership changes, then security is improved, but device complexity increases
Solution Approach 1:
The authorization server performs multiple functions: it manages token issuance and revocation, monitors telemetry data for ownership changes, analyzes patterns to detect potential ownership transitions, and communicates with vehicles. By consolidating these diverse functions into a single multi-functional server, the system avoids the complexity of separate dedicated systems for each function while maintaining comprehensive security monitoring
Solution Approach 2:
The system enables the vehicle itself to participate in the security verification process by having it respond to authorization confirmation requests sent by the server. The vehicle's telematics system can independently verify its authorization status and communicate ownership change indicators to the server, reducing the need for complex external monitoring infrastructure
3Reliability
If the system requests authorization confirmation from the vehicle, then security is improved by verifying current ownership, but loss of time occurs due to the predefined waiting period
Solution Approach 1:
The system applies partial monitoring intensity by not requiring continuous explicit confirmation for every telemetry data point. Instead, it accumulates telemetry data over time and only triggers authorization confirmation requests when specific patterns indicating potential ownership changes are detected. This selective approach reduces the frequency of time-consuming confirmation requests while maintaining security
Data Source
AI summary
A memory stores telemetry data for a vehicle. A processor is programmed to send an authorization confirmation request to the vehicle responsive to pattern matching on the telemetry data indicating a potential change in authorization of the vehicle, and send a deauthorization request to an authorization server to deauthorize tokens for the vehicle responsive to a lack of an affirmative response to the authorization confirmation request being received within a predefined time period.