Secure Storage Key Recovery via Cloud Emergency Backup
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Solution Overview
Problem
Current methods for recovering corrupted cryptographic keys in vehicle secure storage systems require vehicles to be recalled to service centers, leading to significant time and financial burdens for both service centers and vehicle owners.
Innovation Solution
A computer-implemented method that allows vehicles to recover corrupted cryptographic keys by determining corruption, retrieving an emergency key from a secondary storage, and establishing communications with a server using this key, enabling on-site restoration without the need for service center visits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicles are recalled to service centers for cryptographic key recovery, then the corrupted keys can be restored, but significant time and financial costs are incurred for both service centers and vehicle owners
Solution Approach 1:
The patent implements preliminary action by pre-storing backup cryptographic keys in a secure cloud server before they are needed. When key corruption occurs, the system automatically retrieves the pre-prepared backup key from the cloud, eliminating the need for time-consuming service center recalls. This advance preparation of recovery resources directly resolves the time loss contradiction.
Solution Approach 2:
The patent enables self-service by implementing an automated key recovery mechanism where the vehicle's electronic control unit independently detects key corruption, communicates with the cloud server, and restores the cryptographic key without requiring manual intervention from service centers. This automation eliminates the time and financial burdens associated with traditional service center recalls.
2Reliability
If vehicles are recalled to service centers for cryptographic key recovery, then the corrupted keys can be restored, but significant financial costs are incurred for service centers and vehicle owners
Solution Approach 1:
The patent applies copying by creating and maintaining a backup copy of the cryptographic key in a secure cloud server. Instead of physically transporting the original key or requiring service center visits, the system uses this digital copy to restore the corrupted key remotely. This copying approach eliminates the financial costs associated with service center recalls while maintaining key restoration reliability.
Solution Approach 2:
The patent introduces a cloud server as an intermediary between the vehicle's secure storage and the key recovery process. This intermediary enables automated key retrieval without requiring direct interaction with service centers, thereby eliminating the financial costs of recall operations while maintaining reliable key restoration through the intermediary's secure transmission capabilities.
3Reliability
If manual key recovery at service centers is performed, then corrupted cryptographic keys can be recovered, but the process is time-consuming for drivers and owners
Solution Approach 1:
The patent implements self-service by enabling the vehicle's electronic control unit to automatically detect cryptographic key corruption, communicate with the cloud server, and restore the key without requiring driver or owner intervention. This eliminates the time-consuming manual service process while maintaining reliable key recovery, directly improving operational ease.
Solution Approach 2:
The patent employs feedback mechanisms where the electronic control unit continuously monitors the integrity of cryptographic keys in secure storage, automatically detects corruption, and initiates recovery without external intervention. This automated feedback loop eliminates the need for manual service center visits, making the process convenient for users while ensuring reliable key recovery.
Data Source
AI summary
Various embodiments include techniques for recovering a cryptographic key in a system that includes secure storage. A computer system implementing these techniques determines that the cryptographic key stored in a first secure storage is corrupted. The computer system retrieves an emergency key from a second secure storage. The computer system establishes communications with a server by using the emergency key.