Smart Device Attestation for Vehicle Digital Key Account Binding
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Solution Overview
Problem
Existing systems for binding a user account with a digital key in vehicles are tedious and require manual interaction, compromising privacy and security, especially when linking digital keys to vehicle OEM user accounts.
Innovation Solution
A method where a smart device generates a user account attestation based on a digital key, which is verified by an administrative platform, enabling secure binding without user interaction, using cryptographic signatures and key pairs to manage access rights and personalize vehicle settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual interaction is required for binding user account with digital key, then security and privacy control is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs automatic binding between user account and digital key without requiring manual user interaction. The smart device automatically generates the binding when both the user account and digital key are present on the device, eliminating the need for users to manually link them through vehicle HMI interfaces.
Solution Approach 2:
The binding between user account and digital key is established in advance before the user interacts with the vehicle. This preliminary binding action occurs automatically on the smart device, so that when the user later uses the digital key with the vehicle, the association is already in place and no additional manual steps are needed.
2Ease of operation
If automatic binding is implemented without user interaction, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The smart device acts as an intermediary that securely manages the binding process. It generates and stores the binding between user account and digital key in its secure storage, serving as a trusted mediator that ensures only authorized automatic binding occurs while maintaining security controls.
Solution Approach 2:
The patent replaces manual mechanical interaction (users physically linking account and key through vehicle interfaces) with an automated electronic system. The smart device automatically performs the binding operation through software processes, eliminating the need for manual user actions while maintaining security through cryptographic mechanisms.
3Reliability
If explicit linking is required inside vehicle through HMI, then security is improved, but productivity deteriorates
Solution Approach 1:
The smart device serves as an intermediary that performs the binding operation externally, eliminating the need for users to interact with the vehicle's HMI system. This transfers the binding function from the vehicle system to the mobile device, improving efficiency while maintaining security through the mobile device's secure storage capabilities.
Solution Approach 2:
The binding between user account and digital key is performed in advance on the smart device before the user needs to access the vehicle. This preliminary action eliminates the need for time-consuming manual linking operations inside the vehicle, thereby improving productivity without compromising security.
Data Source
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AI summary
Embodiments relate to methods, computer programs, and apparatuses for a smart device, an administrative platform for vehicles, and a vehicle, and for binding a user account to a digital key. A method (10) for a smart device of a user and for binding a user account with a digital key comprises logging (11) into the user account of an administrative platform for vehicles; receiving (12) information on the digital key stored on the smart device; informing (13) an application for processing vehicle information about the information on the digital key; generating (14) a user account attestation comprising a signature based on the digital key; and forwarding (15) the user account attestation to the administrative platform for binding the user account with the digital key.