Digital Car Key Sharing With Certificates and Group Access
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Solution Overview
Problem
Existing digital car key sharing methods are cumbersome and inconvenient, limiting their adoption as users can only directly share keys with others, preventing secure sharing with multiple individuals such as family members, friends, or service providers.
Innovation Solution
An electronic device that securely shares a digital car key by sending invitations to create additional instances on other devices, including certificates and digital signatures, allowing flexible and convenient sharing among multiple users with customizable privileges and rights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the owner directly shares the digital car key with each individual, then security is maintained, but the sharing process becomes cumbersome and inconvenient
Solution Approach 1:
The system performs preliminary actions by pre-configuring sharing permissions and certificate authorities before actual key sharing occurs. The owner can set up a list of authorized devices and users in advance, so when sharing is needed, the process is already prepared and streamlined, maintaining security while improving convenience
Solution Approach 2:
The patent introduces a certificate authority and digital certificate system as an intermediary between the owner and sharing recipients. This intermediary automatically verifies and manages permissions, eliminating the need for manual security checks while maintaining robust security protocols, thus resolving the contradiction between security and convenience
2Adaptability or versatility
If the family member shares the digital car key with another individual, then sharing flexibility improves, but security control is lost
Solution Approach 1:
The system applies local quality by assigning different permission levels and security attributes to different sharing instances. Each digital car key instance can have customized privileges (e.g., full access, limited access, time-restricted access) tailored to the specific recipient's needs, allowing flexible sharing while maintaining appropriate security controls for each case
Solution Approach 2:
The patent implements dynamic permission management where sharing rights can be adjusted, revoked, or modified at any time by the owner through the system. This dynamic control allows the owner to adapt security levels based on changing circumstances while still enabling flexible sharing when appropriate, resolving the contradiction between flexibility and security control
3Adaptability or versatility
If multiple instances of the digital car key are created on different devices, then sharing capability improves, but key management complexity increases
Solution Approach 1:
The patent creates a universal key management system that can manage multiple digital car key instances across different devices through a single interface. The system provides multi-functional capabilities including key creation, distribution, revocation, and monitoring all in one place, allowing flexible multi-device sharing while simplifying management through centralized control
Solution Approach 2:
The system implements feedback mechanisms that automatically notify the owner of key sharing status, device additions, and security events. This automated feedback loop reduces management complexity by providing real-time visibility into the state of multiple key instances without requiring manual tracking, thus enabling versatile sharing while maintaining simple management
Data Source
AI summary
During operation, an electronic device may provide, to a second electronic device, an invitation to share a digital car key associated with a user of the electronic device and a vehicle, where the invitation includes information for creating another instance of the digital car key on the second electronic device. Then, the electronic device may receive, from the second electronic device, a message accepting the invitation, where the message includes a certificate associated with the other instance of the digital car key on the second electronic device. Moreover, the electronic device may provide, to the second electronic device, an approved version of the certificate with a digital signature of the user. Next, the electronic device may provide, to the computer, an instruction to share the digital car key with a set of electronic devices, which is associated with a second user of the second electronic device.