Digital Key Sharing With Spatial and Time-Bound Authentication
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Solution Overview
Problem
Existing digital key sharing methods lack sufficient security and convenience, particularly in scenarios where the digital key needs to be shared across devices, as they do not adequately address spatial and temporal limitations, leading to potential misuse and user inconvenience.
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 the key is only usable within specified geographic areas and timeframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital key sharing is enabled across devices, then convenience is improved, but security deteriorates due to potential misuse
Solution Approach 1:
The patent applies local quality by making the digital key's validity location-dependent. The key only functions within specific geographic boundaries (valid space), so even if shared, it cannot be misused outside those boundaries. This resolves the contradiction by maintaining convenience for authorized users while improving security through spatial restrictions.
Solution Approach 2:
The patent implements dynamics by making the digital key's validity period time-dependent. The key is only valid within a specific time window (valid lifetime), automatically expiring after the designated period. This dynamic temporal restriction allows convenient sharing for necessary durations while preventing long-term security risks.
2Reliability
If digital key sharing is restricted to specific locations and times, then security is improved, but convenience deteriorates due to limited usage
Solution Approach 1:
The patent applies preliminary action by pre-configuring the valid space and valid lifetime parameters before the digital key is shared. These restrictions are established in advance based on the owner's needs, allowing the key to be conveniently usable within those predetermined boundaries without requiring real-time validation or user awareness of the constraints.
3Ease of operation
If digital key is shared multiple times, then convenience is improved for multiple users, but security deteriorates due to increased exposure risk
Solution Approach 1:
The patent implements parameter changes by embedding valid space and valid lifetime directly into the digital key's structure. These parameters dynamically control the key's functionality, automatically preventing unauthorized use outside the specified space-time boundaries. This allows flexible sharing with multiple users while maintaining security through automated parameter-based restrictions.
Data Source
AI summary
Provided are a digital key sharing method, a digital key authentication method, and a computing device. The digital key sharing method is executed by a first device and includes: sending to a second device a digital key creation request that includes valid space 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 includes data to be signed of the digital key, and said data includes the valid space 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 save the generated digital key. Therefore, the security of a digital key can be improved in a spatial dimension.