Digital Key Sharing With Spatial-Temporal Access Limits
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Solution Overview
Problem
Existing digital key sharing methods lack adequate security and convenience, particularly in scenarios where the digital key needs to be shared across devices, as they do not effectively manage spatial and temporal usage limitations.
Innovation Solution
Implementing a digital key sharing method that limits the usage range of the digital key from a spatial dimension and, optionally, a temporal dimension, by setting valid space and lifetime ranges, ensuring secure and efficient sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital key sharing is implemented without spatial and temporal limitations, then convenience of operation is improved, but security is worsened
Solution Approach 1:
The patent applies parameter changes by introducing spatial parameters (geofence coordinates, radius) and temporal parameters (validity start time, end time) to the digital key system. These parameters dynamically change the key's validity state based on location and time, resolving the contradiction between convenience and security by making the key automatically valid or invalid without requiring manual re-sharing.
Solution Approach 2:
The patent implements dynamics by making the digital key's validity dynamic rather than static. The key automatically activates when the device enters the valid space and time range, and deactivates when leaving this range. This dynamic behavior provides both convenience (automatic activation) and security (automatic deactivation), eliminating the need for repeated manual sharing operations.
2Reliability
If digital key usage is restricted to valid spaces and times, then security is improved, but device complexity is worsened
Solution Approach 1:
The patent applies self-service by enabling the digital key system to automatically manage its own validity based on embedded spatial and temporal parameters. The system autonomously determines whether the key should be active or inactive by comparing current location and time against the valid space and time ranges, eliminating the need for complex external verification systems or manual key management operations.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the spatial and temporal parameters into the digital key before distribution. The valid space coordinates, radius, start time, and end time are embedded in advance, allowing the system to automatically enforce security restrictions without requiring complex real-time decision-making or additional verification infrastructure during key usage.
3Adaptability or versatility
If digital key is shared multiple times for different locations and times, then adaptability is improved, but loss of time is worsened
Solution Approach 1:
The patent applies universality by creating a single digital key that serves multiple functions across different locations and times. Instead of creating separate keys for different scenarios, one key with embedded spatial and temporal parameters can adapt to various usage scenarios automatically, eliminating the need for repeated key sharing operations and saving time while maintaining high adaptability.
Data Source
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AI summary
Provided are a digital-key sharing method, a digital-key verification method, and a computing device. The digital-key sharing method is executed by a first device and comprises: sending to a second device a digital-key creation request that comprises valid spatial information for a digital key, so as to generate the digital key at the second device; receiving a digital-key signature request from the second device, wherein the digital-key signature request comprises data to be signed of the digital key, and said data comprises the valid spatial information; and on the basis that the signing of the digital-key signature request is completed, sending a digital-key import request to the second device, so as to indicate the second device to store the generated digital key. Therefore, the security of a digital key can be improved in a spatial dimension.