Vehicle Anti-Theft via External Cryptographic Identity Verification
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Solution Overview
Problem
Existing methods for protecting movable assets, such as vehicles, against unauthorized use are vulnerable to theft and manipulation of motorvehicle electronics, which can alter the vehicle's identity, allowing unauthorized use and circumvention of security systems.
Innovation Solution
Implementing cryptographic identity verification and authentication using asymmetric key pairs and certificates, where a computer system verifies the motorvehicle's identity and checks for blocking status, ensuring only authorized usage and preventing manipulation by transmitting signed usage and blocking signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If code-based usage signal transmission is used to identify the vehicle, then the system is easier to operate, but the vehicle can be manipulated to change its identity and circumvent the system
Solution Approach 1:
The patent introduces a trusted external computer system as an intermediary that performs cryptographic verification of the vehicle's identity. This mediator prevents direct manipulation between the vehicle and the usage control device, ensuring that even if the vehicle's electronics are tampered with, the external system can detect the manipulation through cryptographic verification of the vehicle identification number.
2Reliability
If cryptographic identity verification is implemented, then the reliability of the system is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the complex cryptographic verification functions from the vehicle's onboard electronics and relocates them to an external computer system. This separation allows the vehicle's electronics to remain relatively simple while the external system handles the computationally intensive cryptographic operations, thus improving reliability without significantly increasing the complexity of the vehicle's own device.
3Area of stationary object
If usage signals are transmitted periodically through radio network, then the coverage area is expanded, but the system becomes more vulnerable to signal detection and manipulation
Solution Approach 1:
The patent changes the parameter of signal authentication from simple code-based identification to cryptographic verification. By transforming the signal structure to include cryptographic proofs of vehicle identity, the system maintains radio transmission coverage while making the signals resistant to detection and manipulation, as the cryptographic parameters can verify the authenticity of each signal.
Data Source
AI summary
The invention relates to a method for protection of a movable asset, particularly a motorvehicle (100), against unauthorized use with the following steps: cryptographic identity verification and/or cryptographic authentication of the vehicle with an external computer system (108), verification whether a blocking is stored for the motorvehicle, transmission of a signal from the computer system to the vehicle in order to allow use of the motorvehicle if no blocking is stored for the motorvehicle.