Biometric Vehicle Start Pairing With Cryptographic Intrusion Checks
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Solution Overview
Problem
Existing vehicle start systems lack robust security measures to prevent unauthorized access and intrusion detection, particularly in biometric-authenticated systems where sensor circuits and key circuits need secure pairing and validation.
Innovation Solution
A system that includes a sensor circuit with a smart controller for providing trusted data and an operational circuit with an operational controller that performs identity verification using a cryptographic challenge to authenticate the sensor circuit before allowing vehicle start.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If biometric authentication is implemented for vehicle start, then user convenience is improved, but security vulnerability to intrusion increases
Solution Approach 1:
The system performs pairing mode authentication before normal operation, establishing cryptographic credentials in advance. The smart controller and key controller exchange and store encryption credentials during a dedicated pairing phase, ensuring security is established before biometric authentication is enabled. This preliminary security setup prevents intrusion while maintaining convenience during normal use.
Solution Approach 2:
The patent introduces a cryptographic challenge-response mechanism as an intermediary between the biometric authentication system and the vehicle start authorization. The key controller sends challenge messages that must be cryptographically verified by the smart controller, creating a security intermediary layer that validates the integrity of the biometric authentication path without disrupting user convenience.
2Device complexity
If sensor circuit and key circuit are integrated, then system complexity is reduced, but security risk from unauthorized access increases
Solution Approach 1:
The system divides the authentication function into two separate circuits: a smart controller containing the biometric sensor and a key controller containing the authorization logic. These circuits are paired through cryptographic credential exchange, maintaining functional separation while enabling integrated operation. This segmentation allows security validation between components while keeping the overall system relatively simple.
Solution Approach 2:
The key controller sends challenge messages to the smart controller and verifies the cryptographic responses. This feedback loop creates continuous validation of the pairing credentials, ensuring that even if the circuits are physically integrated, unauthorized access is prevented through active cryptographic verification of the pairing relationship.
3Reliability
If cryptographic challenge validation is implemented, then security against intrusion is improved, but processing time increases
Solution Approach 1:
The cryptographic credentials are exchanged and stored during a preliminary pairing mode before normal vehicle operation. This advance setup eliminates the need for time-consuming cryptographic challenges during each vehicle start, as the pairing validation is already established. The security is configured in advance, reducing processing time during actual authentication events.
Data Source
AI summary
A system for secure sensor operation is provided. A sensor circuit includes a smart controller configured to provide trusted data. An operational circuit includes an operational controller configured to, responsive to receipt of a request from the sensor circuit, perform an identity verification using a cryptographic challenge to authenticate the sensor circuit before utilizing the trusted data.